├── .editorconfig ├── .gitignore ├── LICENSE ├── README.md ├── build.gradle ├── dependencies.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── library ├── .gitignore ├── build.gradle ├── consumer-rules.pro ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ └── java │ └── com │ └── kernel │ └── bundlesaver │ ├── ActivityLifecycleCallbacksAdapter.kt │ ├── ActivitySavedStateLogger.kt │ ├── BundleManager.kt │ ├── BundleSaverDelegate.kt │ ├── Formatter.kt │ ├── FragmentSavedStateLogger.kt │ ├── Logger.kt │ ├── SizeTree.kt │ ├── disk │ ├── DiskHandler.kt │ └── FileDiskHandler.kt │ ├── exceptions │ └── BundleSizeExceededException.kt │ ├── utils │ ├── Converter.kt │ └── Size.kt │ └── wrapper │ └── BitmapWrapper.kt ├── sample ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── kernel │ │ └── bundlesaver │ │ └── sample │ │ ├── App.kt │ │ └── MainActivity.kt │ └── res │ ├── layout │ └── activity_main.xml │ └── values │ └── strings.xml └── settings.gradle /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*.{kt,kts,java,yml,json,proto}] 4 | trim_trailing_whitespace = true 5 | insert_final_newline = false 6 | ij_kotlin_allow_trailing_comma = false 7 | ij_kotlin_allow_trailing_comma_on_call_site = false 8 | 9 | [*.{kt,kts,java}] 10 | indent_size = 4 11 | max_line_length = 120 12 | 13 | [*.{yml,json,proto}] 14 | indent_size = 2 -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | 22 | # Log/OS Files 23 | *.log 24 | 25 | # Android Studio generated files and folders 26 | captures/ 27 | .externalNativeBuild/ 28 | .cxx/ 29 | *.apk 30 | output.json 31 | 32 | # IntelliJ 33 | .idea/ 34 | misc.xml 35 | deploymentTargetDropDown.xml 36 | render.experimental.xml 37 | 38 | # Keystore files 39 | *.jks 40 | *.keystore 41 | secrets.properties 42 | key/dev_gpp.json 43 | 44 | # Android Profiling 45 | *.hprof 46 | 47 | # Kotlin 2.0 files 48 | .kotlin -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Bundle Saver 2 | A library that fixes TransactionTooLargeException during state saving and restoring in Runtime. 3 | 4 | ## Just Say No to TransactionTooLargeException 5 | How many times, while sitting in the evening with a cup of tea and browsing through Crashlytics, have you encountered such an Exception? 6 | 7 | ````java 8 | Fatal Exception: java.lang.RuntimeException 9 | android.os.TransactionTooLargeException: data parcel size 535656 bytes Bundle stats: androidx.lifecycle.BundlableSavedStateRegistry.key [size=534156] 10 | ```` 11 | 12 | ### What's happening? How did this occur? 13 | Any developer knows about bundles and their size limitations, but the problem can arise in large applications with deeply nested screens and complex states. When a Binder transaction exceeds 1(or 2) MB, a TransactionTooLargeException will occur. But there is a solution! Introducing, BundleSaver! 14 | 15 | ### Features 16 | - ***Avoid TransactionTooLargeException***: Automatically handles large bundles by saving excess data to disk. 17 | - ***Easy Integration***: Simple initialization and usage with minimal boilerplate code. 18 | - ***Concurrency Support***: Utilizes a cached thread pool for efficient background operations. 19 | - ***Logging***: Built-in logging to monitor bundle sizes and ensure compliance with size limits. 20 | - ***Memory and Disk Management***: Clears data from memory and disk as needed, ensuring optimal performance. 21 | 22 | ## Getting Started 23 | 24 | ### Installation 25 | 26 | Add it in your root build.gradle at the end of repositories: 27 | 28 | ````java 29 | dependencyResolutionManagement { 30 | repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) 31 | repositories { 32 | ... 33 | maven { url 'https://jitpack.io' } 34 | } 35 | } 36 | ```` 37 | 38 | Add the BundleSaver dependency to your build.gradle file in App module: 39 | ````java 40 | dependencies { 41 | implementation "com.github.kernel0x:bundlesaver:1.0.0" 42 | } 43 | ```` 44 | 45 | ### Usage 46 | 47 | Initialize an instance of BundleManager (preferably in the Application's onCreate() method) 48 | ````java 49 | class App : Application() { 50 | 51 | override fun onCreate() { 52 | super.onCreate() 53 | BundleManager.initialize(this) 54 | } 55 | } 56 | ```` 57 | 58 | Next, you should add the following to each of your Activities (***Important! The order must be exactly like this!***). 59 | ````java 60 | class MainActivity : Activity() { 61 | 62 | override fun onCreate(savedInstanceState: Bundle?) { 63 | BundleManager.restoreInstanceState(this, savedInstanceState) 64 | super.onCreate(savedInstanceState) 65 | } 66 | 67 | override fun onSaveInstanceState(outState: Bundle) { 68 | super.onSaveInstanceState(outState) 69 | BundleManager.saveInstanceState(this, outState) 70 | } 71 | } 72 | ```` 73 | 74 | That's it! 75 | 76 | #### Optional 77 | Clearing Data and Logging. 78 | 79 | ## Releases 80 | 81 | Checkout the [Releases](https://github.com/kernel0x/bundlesaver/releases) tab for all release info. 82 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | apply from: 'dependencies.gradle' 2 | 3 | buildscript { 4 | ext.kotlin_version = '1.6.21' 5 | repositories { 6 | mavenCentral() 7 | google() 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:4.0.2' 11 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 12 | } 13 | } 14 | 15 | allprojects { 16 | repositories { 17 | google() 18 | mavenCentral() 19 | maven { url 'https://jitpack.io' } 20 | } 21 | } 22 | 23 | tasks.register('clean', Delete) { 24 | delete rootProject.buildDir 25 | } -------------------------------------------------------------------------------- /dependencies.gradle: -------------------------------------------------------------------------------- 1 | ext.versions = [ 2 | minSdk : 24, 3 | compileSdk : 34, 4 | libraryVersion : '1.0.0', 5 | libraryVersionCode: 1, 6 | 7 | androidxFragment : '1.5.1', 8 | kotlin : '1.6.21', 9 | ] -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | 8 | # Specifies the JVM arguments used for the daemon process. 9 | # The setting is particularly useful for tweaking memory settings. 10 | # Ensure important default jvmargs aren't overwritten. See https://github.com/gradle/gradle/issues/19750 11 | org.gradle.jvmargs=-Xmx6g -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 -XX:+UseParallelGC -XX:MaxMetaspaceSize=1g 12 | 13 | # When configured, Gradle will run in incubating parallel mode. 14 | # This option should only be used with decoupled projects. More details, visit 15 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 16 | org.gradle.parallel=true 17 | 18 | # Not encouraged by Gradle and can produce weird results. Wait for isolated projects instead. 19 | org.gradle.configureondemand=false 20 | 21 | # Enable caching between builds. 22 | org.gradle.caching=true 23 | 24 | # Enable configuration caching between builds. 25 | org.gradle.configuration-cache=true 26 | # This option is set because of https://github.com/google/play-services-plugins/issues/246 27 | # to generate the Configuration Cache regardless of incompatible tasks. 28 | # See https://github.com/android/nowinandroid/issues/1022 before using it. 29 | org.gradle.configuration-cache.problems=warn 30 | 31 | # AndroidX package structure to make it clearer which packages are bundled with the 32 | # Android operating system, and which are packaged with your app"s APK 33 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 34 | android.useAndroidX=true 35 | android.enableJetifier=false 36 | # Kotlin code style for this project: "official" or "obsolete": 37 | kotlin.code.style=official 38 | 39 | org.gradle.unsafe.configuration-cache=true 40 | org.gradle.unsafe.configuration-cache-problems=warn 41 | 42 | # Disable build features that are enabled by default, 43 | # https://developer.android.com/build/releases/gradle-plugin#default-changes 44 | android.defaults.buildfeatures.resvalues=false 45 | android.defaults.buildfeatures.shaders=false -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kernel0x/bundlesaver/8a20183fbdb6f731b7fcc0d10308bd3dffb53299/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Wed Nov 15 08:44:45 MSK 2023 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-bin.zip 5 | zipStoreBase=GRADLE_USER_HOME 6 | zipStorePath=wrapper/dists 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | # 4 | # Copyright 2015 the original author or authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | ## 21 | ## Gradle start up script for UN*X 22 | ## 23 | ############################################################################## 24 | 25 | # Attempt to set APP_HOME 26 | # Resolve links: $0 may be a link 27 | PRG="$0" 28 | # Need this for relative symlinks. 29 | while [ -h "$PRG" ]; do 30 | ls=$(ls -ld "$PRG") 31 | link=$(expr "$ls" : '.*-> \(.*\)$') 32 | if expr "$link" : '/.*' >/dev/null; then 33 | PRG="$link" 34 | else 35 | PRG=$(dirname "$PRG")"/$link" 36 | fi 37 | done 38 | SAVED="$(pwd)" 39 | cd "$(dirname \"$PRG\")/" >/dev/null 40 | APP_HOME="$(pwd -P)" 41 | cd "$SAVED" >/dev/null 42 | 43 | APP_NAME="Gradle" 44 | APP_BASE_NAME=$(basename "$0") 45 | 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 48 | 49 | # Use the maximum available, or set MAX_FD != -1 to use that value. 50 | MAX_FD="maximum" 51 | 52 | warn() { 53 | echo "$*" 54 | } 55 | 56 | die() { 57 | echo 58 | echo "$*" 59 | echo 60 | exit 1 61 | } 62 | 63 | # OS specific support (must be 'true' or 'false'). 64 | cygwin=false 65 | msys=false 66 | darwin=false 67 | nonstop=false 68 | case "$(uname)" in 69 | CYGWIN*) 70 | cygwin=true 71 | ;; 72 | Darwin*) 73 | darwin=true 74 | ;; 75 | MINGW*) 76 | msys=true 77 | ;; 78 | NONSTOP*) 79 | nonstop=true 80 | ;; 81 | esac 82 | 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 84 | 85 | # Determine the Java command to use to start the JVM. 86 | if [ -n "$JAVA_HOME" ]; then 87 | if [ -x "$JAVA_HOME/jre/sh/java" ]; then 88 | # IBM's JDK on AIX uses strange locations for the executables 89 | JAVACMD="$JAVA_HOME/jre/sh/java" 90 | else 91 | JAVACMD="$JAVA_HOME/bin/java" 92 | fi 93 | if [ ! -x "$JAVACMD" ]; then 94 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 95 | 96 | Please set the JAVA_HOME variable in your environment to match the 97 | location of your Java installation." 98 | fi 99 | else 100 | JAVACMD="java" 101 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 102 | 103 | Please set the JAVA_HOME variable in your environment to match the 104 | location of your Java installation." 105 | fi 106 | 107 | # Increase the maximum file descriptors if we can. 108 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ]; then 109 | MAX_FD_LIMIT=$(ulimit -H -n) 110 | if [ $? -eq 0 ]; then 111 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ]; then 112 | MAX_FD="$MAX_FD_LIMIT" 113 | fi 114 | ulimit -n $MAX_FD 115 | if [ $? -ne 0 ]; then 116 | warn "Could not set maximum file descriptor limit: $MAX_FD" 117 | fi 118 | else 119 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 120 | fi 121 | fi 122 | 123 | # For Darwin, add options to specify how the application appears in the dock 124 | if $darwin; then 125 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 126 | fi 127 | 128 | # For Cygwin or MSYS, switch paths to Windows format before running java 129 | if [ "$cygwin" = "true" -o "$msys" = "true" ]; then 130 | APP_HOME=$(cygpath --path --mixed "$APP_HOME") 131 | CLASSPATH=$(cygpath --path --mixed "$CLASSPATH") 132 | JAVACMD=$(cygpath --unix "$JAVACMD") 133 | 134 | # We build the pattern for arguments to be converted via cygpath 135 | ROOTDIRSRAW=$(find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null) 136 | SEP="" 137 | for dir in $ROOTDIRSRAW; do 138 | ROOTDIRS="$ROOTDIRS$SEP$dir" 139 | SEP="|" 140 | done 141 | OURCYGPATTERN="(^($ROOTDIRS))" 142 | # Add a user-defined pattern to the cygpath arguments 143 | if [ "$GRADLE_CYGPATTERN" != "" ]; then 144 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 145 | fi 146 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 147 | i=0 148 | for arg in "$@"; do 149 | CHECK=$(echo "$arg" | egrep -c "$OURCYGPATTERN" -) 150 | CHECK2=$(echo "$arg" | egrep -c "^-") ### Determine if an option 151 | 152 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ]; then ### Added a condition 153 | eval $(echo args$i)=$(cygpath --path --ignore --mixed "$arg") 154 | else 155 | eval $(echo args$i)="\"$arg\"" 156 | fi 157 | i=$(expr $i + 1) 158 | done 159 | case $i in 160 | 0) set -- ;; 161 | 1) set -- "$args0" ;; 162 | 2) set -- "$args0" "$args1" ;; 163 | 3) set -- "$args0" "$args1" "$args2" ;; 164 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;; 165 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 166 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 167 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 168 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 169 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 170 | esac 171 | fi 172 | 173 | # Escape application args 174 | save() { 175 | for i; do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/"; done 176 | echo " " 177 | } 178 | APP_ARGS=$(save "$@") 179 | 180 | # Collect all arguments for the java command, following the shell quoting and substitution rules 181 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 182 | 183 | exec "$JAVACMD" "$@" 184 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 33 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 34 | 35 | @rem Find java.exe 36 | if defined JAVA_HOME goto findJavaFromJavaHome 37 | 38 | set JAVA_EXE=java.exe 39 | %JAVA_EXE% -version >NUL 2>&1 40 | if "%ERRORLEVEL%" == "0" goto init 41 | 42 | echo. 43 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 44 | echo. 45 | echo Please set the JAVA_HOME variable in your environment to match the 46 | echo location of your Java installation. 47 | 48 | goto fail 49 | 50 | :findJavaFromJavaHome 51 | set JAVA_HOME=%JAVA_HOME:"=% 52 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 53 | 54 | if exist "%JAVA_EXE%" goto init 55 | 56 | echo. 57 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 58 | echo. 59 | echo Please set the JAVA_HOME variable in your environment to match the 60 | echo location of your Java installation. 61 | 62 | goto fail 63 | 64 | :init 65 | @rem Get command-line arguments, handling Windows variants 66 | 67 | if not "%OS%" == "Windows_NT" goto win9xME_args 68 | 69 | :win9xME_args 70 | @rem Slurp the command line arguments. 71 | set CMD_LINE_ARGS= 72 | set _SKIP=2 73 | 74 | :win9xME_args_slurp 75 | if "x%~1" == "x" goto execute 76 | 77 | set CMD_LINE_ARGS=%* 78 | 79 | :execute 80 | @rem Setup the command line 81 | 82 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 83 | 84 | @rem Execute Gradle 85 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 86 | 87 | :end 88 | @rem End local scope for the variables with windows NT shell 89 | if "%ERRORLEVEL%"=="0" goto mainEnd 90 | 91 | :fail 92 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 93 | rem the _cmd.exe /c_ return code! 94 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 95 | exit /b 1 96 | 97 | :mainEnd 98 | if "%OS%"=="Windows_NT" endlocal 99 | 100 | :omega 101 | -------------------------------------------------------------------------------- /library/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /library/build.gradle: -------------------------------------------------------------------------------- 1 | import org.jetbrains.kotlin.gradle.tasks.KotlinCompile 2 | 3 | apply plugin: "com.android.library" 4 | apply plugin: "kotlin-android" 5 | 6 | android { 7 | compileSdkVersion versions.compileSdk 8 | defaultConfig { 9 | minSdkVersion versions.minSdk 10 | targetSdkVersion versions.targetSdk 11 | versionCode versions.libraryVersionCode 12 | versionName versions.libraryVersion 13 | consumerProguardFiles "consumer-rules.pro" 14 | } 15 | 16 | compileOptions { 17 | sourceCompatibility JavaVersion.VERSION_1_8 18 | targetCompatibility JavaVersion.VERSION_1_8 19 | } 20 | } 21 | 22 | dependencies { 23 | implementation "org.jetbrains.kotlin:kotlin-stdlib:$versions.kotlin" 24 | implementation "androidx.fragment:fragment:$versions.androidxFragment" 25 | } 26 | 27 | tasks.withType(KotlinCompile).configureEach { 28 | kotlinOptions { 29 | jvmTarget = "1.8" 30 | freeCompilerArgs = ["-Xjvm-default=enable"] 31 | } 32 | } -------------------------------------------------------------------------------- /library/consumer-rules.pro: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kernel0x/bundlesaver/8a20183fbdb6f731b7fcc0d10308bd3dffb53299/library/consumer-rules.pro -------------------------------------------------------------------------------- /library/proguard-rules.pro: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kernel0x/bundlesaver/8a20183fbdb6f731b7fcc0d10308bd3dffb53299/library/proguard-rules.pro -------------------------------------------------------------------------------- /library/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/ActivityLifecycleCallbacksAdapter.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.app.Activity 4 | import android.app.Application.ActivityLifecycleCallbacks 5 | import android.os.Bundle 6 | 7 | internal abstract class ActivityLifecycleCallbacksAdapter : ActivityLifecycleCallbacks { 8 | 9 | override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) { 10 | // no-op 11 | } 12 | 13 | override fun onActivityDestroyed(activity: Activity) { 14 | // no-op 15 | } 16 | 17 | override fun onActivityPaused(activity: Activity) { 18 | // no-op 19 | } 20 | 21 | override fun onActivityResumed(activity: Activity) { 22 | // no-op 23 | } 24 | 25 | override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) { 26 | // no-op 27 | } 28 | 29 | override fun onActivityStarted(activity: Activity) { 30 | // no-op 31 | } 32 | 33 | override fun onActivityStopped(activity: Activity) { 34 | // no-op 35 | } 36 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/ActivitySavedStateLogger.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.app.Activity 4 | import android.app.Application 5 | import android.os.Bundle 6 | import androidx.fragment.app.FragmentActivity 7 | import com.kernel.bundlesaver.exceptions.BundleSizeExceededException 8 | import com.kernel.bundlesaver.utils.sizeAsParcel 9 | 10 | /** 11 | * [Application.ActivityLifecycleCallbacks] implementation that logs information 12 | * about the saved state of Activities. 13 | */ 14 | internal class ActivitySavedStateLogger( 15 | private val formatter: Formatter, 16 | private val logger: Logger, 17 | private val limitSizeBundle: Int, 18 | logFragments: Boolean 19 | ) : ActivityLifecycleCallbacksAdapter() { 20 | 21 | private val fragmentLogger = if (logFragments) FragmentSavedStateLogger(formatter, logger) else null 22 | private val savedStates = HashMap() 23 | internal var isLogging = false 24 | 25 | override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) { 26 | if (activity is FragmentActivity && fragmentLogger != null) { 27 | activity.supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLogger, true) 28 | } 29 | } 30 | 31 | override fun onActivityDestroyed(activity: Activity) { 32 | logAndRemoveSavedState(activity) 33 | } 34 | 35 | override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) { 36 | if (isLogging) { 37 | savedStates[activity] = outState 38 | } 39 | } 40 | 41 | override fun onActivityStopped(activity: Activity) { 42 | logAndRemoveSavedState(activity) 43 | } 44 | 45 | private fun logAndRemoveSavedState(activity: Activity) { 46 | val savedState = savedStates.remove(key = activity) 47 | if (savedState != null) { 48 | try { 49 | val message = formatter.format(activity = activity, bundle = savedState) 50 | logger.log(message = message) 51 | val size = sizeAsParcel(bundle = savedState) 52 | if (size > limitSizeBundle) { 53 | logger.logException( 54 | exception = BundleSizeExceededException( 55 | formatter.format( 56 | size = size, 57 | limit = limitSizeBundle 58 | ) 59 | ) 60 | ) 61 | } 62 | } catch (exception: RuntimeException) { 63 | logger.logException(exception = exception) 64 | } 65 | } 66 | } 67 | 68 | fun startLogging() { 69 | isLogging = true 70 | fragmentLogger?.startLogging() 71 | } 72 | 73 | fun stopLogging() { 74 | isLogging = false 75 | savedStates.clear() 76 | fragmentLogger?.stopLogging() 77 | } 78 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/BundleManager.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.app.Application 4 | import android.content.Context 5 | import android.os.Bundle 6 | import android.util.Log 7 | import com.kernel.bundlesaver.disk.FileDiskHandler 8 | import java.util.concurrent.Executors 9 | 10 | /** 11 | * Constant representing the default size limit for Bundle. 12 | */ 13 | const val DEFAULT_BUNDLE_SIZE_LIMIT_BYTES = 524288 // 512 КБ 14 | 15 | /** 16 | * A object for avoiding [android.os.TransactionTooLargeException] in Runtime 17 | */ 18 | object BundleManager { 19 | 20 | private val executorService = Executors.newCachedThreadPool() 21 | 22 | private var activityLogger: ActivitySavedStateLogger? = null 23 | 24 | @Volatile 25 | private var delegate: BundleSaverDelegate? = null 26 | 27 | @JvmStatic 28 | val isLogging: Boolean 29 | get() = activityLogger?.isLogging ?: false 30 | 31 | /** 32 | * Initializes the framework used to save and restore data and route it to a location free from 33 | * [android.os.TransactionTooLargeException]. 34 | */ 35 | @JvmStatic 36 | fun initialize( 37 | application: Application, 38 | isLogging: Boolean = true, 39 | logger: Logger? = null, 40 | priority: Int = Log.DEBUG, 41 | tag: String = "BundleSaver", 42 | limitSizeBundle: Int = DEFAULT_BUNDLE_SIZE_LIMIT_BYTES 43 | ) { 44 | delegate = BundleSaverDelegate(application, executorService) 45 | if (isLogging) { 46 | startLogging( 47 | application = application, 48 | formatter = DefaultFormatter(), 49 | logger = logger ?: DefaultLogger(priority, tag), 50 | limitSizeBundle = limitSizeBundle 51 | ) 52 | } 53 | } 54 | 55 | /** 56 | * Restores the state of the given target object based on tracking information stored in the 57 | * given [Bundle]. The actual saved data will be retrieved from a location in memory or 58 | * stored on disk. 59 | * 60 | * It is required to call [initialize] before calling this method. 61 | */ 62 | @JvmStatic 63 | fun restoreInstanceState(target: Any, state: Bundle?) { 64 | checkInitialization() 65 | delegate?.restoreInstanceState(target, state) 66 | } 67 | 68 | /** 69 | * Saves the state of the given target object to a location in memory and disk and stores 70 | * tracking information in given [Bundle]. 71 | * 72 | * It is required to call [initialize] before calling this method. 73 | */ 74 | @JvmStatic 75 | fun saveInstanceState(target: Any, state: Bundle) { 76 | checkInitialization() 77 | delegate?.saveInstanceState(target, state) 78 | } 79 | 80 | /** 81 | * Clears any data associated with the given target object that may be stored to disk. This 82 | * will not affect data stored for restoration after configuration changes. Due to how these 83 | * changes are monitored. 84 | * 85 | * It is required to call [initialize] before calling this method. 86 | */ 87 | @JvmStatic 88 | fun clear(target: Any) { 89 | checkInitialization() 90 | delegate?.clear(target) 91 | } 92 | 93 | /** 94 | * Clears all data from disk and memory. Does not require a call to [initialize]. 95 | */ 96 | @JvmStatic 97 | fun clearAll(context: Context) { 98 | delegate?.clearAll() ?: run { 99 | executorService.execute { 100 | FileDiskHandler(context, executorService).clearAll() 101 | } 102 | } 103 | } 104 | 105 | /** 106 | * Start logging size bundle 107 | */ 108 | @JvmStatic 109 | fun startLogging(application: Application, formatter: Formatter, logger: Logger, limitSizeBundle: Int) { 110 | if (activityLogger == null) { 111 | activityLogger = ActivitySavedStateLogger( 112 | formatter = formatter, 113 | logger = logger, 114 | limitSizeBundle = limitSizeBundle, 115 | logFragments = true 116 | ) 117 | } 118 | 119 | val activityLogger = activityLogger ?: return 120 | 121 | if (activityLogger.isLogging) { 122 | return 123 | } 124 | 125 | activityLogger.startLogging() 126 | application.registerActivityLifecycleCallbacks(activityLogger) 127 | } 128 | 129 | /** 130 | * Stop all logging 131 | */ 132 | @JvmStatic 133 | fun stopLogging(application: Application) { 134 | val activityLogger = activityLogger ?: return 135 | 136 | if (!activityLogger.isLogging) { 137 | return 138 | } 139 | 140 | activityLogger.stopLogging() 141 | application.unregisterActivityLifecycleCallbacks(activityLogger) 142 | } 143 | 144 | private fun checkInitialization() { 145 | delegate ?: throw IllegalStateException( 146 | "You must first call initialize before calling any other methods" 147 | ) 148 | } 149 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/BundleSaverDelegate.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.app.Activity 4 | import android.app.ActivityManager 5 | import android.app.Application 6 | import android.content.Context 7 | import android.os.Bundle 8 | import android.util.Log 9 | import androidx.annotation.Nullable 10 | import com.kernel.bundlesaver.disk.DiskHandler 11 | import com.kernel.bundlesaver.disk.FileDiskHandler 12 | import com.kernel.bundlesaver.utils.Converter 13 | import com.kernel.bundlesaver.wrapper.unwrapOptimizedObjects 14 | import com.kernel.bundlesaver.wrapper.wrapOptimizedObjects 15 | import java.util.UUID 16 | import java.util.WeakHashMap 17 | import java.util.concurrent.ConcurrentHashMap 18 | import java.util.concurrent.CopyOnWriteArrayList 19 | import java.util.concurrent.CountDownLatch 20 | import java.util.concurrent.ExecutorService 21 | import java.util.concurrent.TimeUnit 22 | 23 | private const val TAG = "BundleSaverDelegate" 24 | private const val BACKGROUND_WAIT_TIMEOUT_MS = 5000L 25 | private const val KEY_UUID = "uuid_%s" 26 | 27 | internal class BundleSaverDelegate( 28 | context: Context, 29 | private val executorService: ExecutorService 30 | ) { 31 | 32 | private val diskHandler: DiskHandler = FileDiskHandler(context, executorService) 33 | private val pendingWriteTasks = CopyOnWriteArrayList() 34 | private val uuidBundleMap = ConcurrentHashMap() 35 | private val objectUuidMap = WeakHashMap() 36 | private var activityCount = 0 37 | private var isClearAllowed = false 38 | private var isConfigChange = false 39 | private var isFirstCreateCall = true 40 | private var pendingWriteTasksLatch: CountDownLatch? = null 41 | 42 | init { 43 | registerForLifecycleEvents(context) 44 | context.getSharedPreferences(TAG, Context.MODE_PRIVATE).edit().clear().apply() 45 | } 46 | 47 | fun clear(target: Any) { 48 | if (!isClearAllowed) return 49 | val uuid = objectUuidMap.remove(target) ?: return 50 | clearDataForUuid(uuid) 51 | } 52 | 53 | fun clearAll() { 54 | uuidBundleMap.clear() 55 | objectUuidMap.clear() 56 | doInBackground { diskHandler.clearAll() } 57 | } 58 | 59 | private fun clearDataForUuid(uuid: String) { 60 | uuidBundleMap.remove(uuid) 61 | clearDataFromDisk(uuid) 62 | } 63 | 64 | private fun clearDataFromDisk(uuid: String) { 65 | doInBackground { diskHandler.clear(uuid) } 66 | } 67 | 68 | private fun doInBackground(runnable: Runnable) { 69 | executorService.execute(runnable) 70 | } 71 | 72 | private fun getKeyForUuid(target: Any): String = String.format(KEY_UUID, target.javaClass.name) 73 | 74 | private fun getOrGenerateUuid(target: Any): String = objectUuidMap.getOrPut(target) { UUID.randomUUID().toString() } 75 | 76 | @Nullable 77 | private fun getSavedBundleAndUnwrap(uuid: String): Bundle? { 78 | val bundle = uuidBundleMap[uuid] ?: readFromDisk(uuid) ?: return null 79 | unwrapOptimizedObjects(bundle) 80 | clearDataForUuid(uuid) 81 | return bundle 82 | } 83 | 84 | @Nullable 85 | private fun getSavedUuid(target: Any, state: Bundle): String? { 86 | return objectUuidMap[target] ?: state.getString(getKeyForUuid(target), null)?.also { 87 | objectUuidMap[target] = it 88 | } 89 | } 90 | 91 | private fun isAppInForeground(): Boolean = activityCount > 0 || isConfigChange 92 | 93 | private fun isFreshStart(activity: Activity, savedInstanceState: Bundle?): Boolean { 94 | if (!isFirstCreateCall) return false 95 | isFirstCreateCall = false 96 | if (savedInstanceState != null) return false 97 | val activityManager = activity.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager 98 | val appTasks = activityManager.appTasks 99 | return appTasks.size == 1 && appTasks[0].taskInfo.numActivities == 1 100 | } 101 | 102 | private fun queueDiskWritingIfNecessary(uuid: String, bundle: Bundle) { 103 | val runnable = object : Runnable { 104 | override fun run() { 105 | writeToDisk(uuid, bundle) 106 | if (!uuidBundleMap.containsKey(uuid)) { 107 | clearDataFromDisk(uuid) 108 | } 109 | pendingWriteTasks.remove(this) // Используем this для удаления текущего Runnable 110 | if (pendingWriteTasks.isEmpty() && pendingWriteTasksLatch != null) { 111 | pendingWriteTasksLatch?.countDown() 112 | } 113 | } 114 | } 115 | if (pendingWriteTasksLatch == null || pendingWriteTasksLatch?.count == 0L) { 116 | pendingWriteTasksLatch = CountDownLatch(1) 117 | } 118 | pendingWriteTasks.add(runnable) 119 | doInBackground(runnable) 120 | if (isAppInForeground()) return 121 | try { 122 | pendingWriteTasksLatch?.await(BACKGROUND_WAIT_TIMEOUT_MS, TimeUnit.MILLISECONDS) 123 | } catch (e: InterruptedException) { 124 | // Interrupted for an unknown reason, simply proceed. 125 | } 126 | pendingWriteTasksLatch = null 127 | } 128 | 129 | @Nullable 130 | private fun readFromDisk(uuid: String): Bundle? { 131 | val bytes = diskHandler.getBytes(uuid) ?: return null 132 | val bundle = Converter.fromBytes(bytes) ?: run { 133 | Log.e("Bridge", "Unable to properly convert disk-persisted data to a Bundle. Some state loss may occur.") 134 | return null 135 | } 136 | return bundle 137 | } 138 | 139 | private fun registerForLifecycleEvents(context: Context) { 140 | (context.applicationContext as Application).registerActivityLifecycleCallbacks( 141 | object : ActivityLifecycleCallbacksAdapter() { 142 | override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) { 143 | isClearAllowed = true 144 | isConfigChange = false 145 | if (!isFreshStart(activity, savedInstanceState)) return 146 | clearAll() 147 | } 148 | 149 | override fun onActivityDestroyed(activity: Activity) { 150 | isClearAllowed = activity.isFinishing 151 | } 152 | 153 | override fun onActivityPaused(activity: Activity) { 154 | isConfigChange = activity.isChangingConfigurations 155 | } 156 | 157 | override fun onActivityStarted(activity: Activity) { 158 | activityCount++ 159 | } 160 | 161 | override fun onActivityStopped(activity: Activity) { 162 | activityCount-- 163 | } 164 | } 165 | ) 166 | } 167 | 168 | fun restoreInstanceState(target: Any, state: Bundle?) { 169 | state ?: return 170 | getSavedUuid(target, state)?.let { uuid -> 171 | getSavedBundleAndUnwrap(uuid)?.also { state.putAll(it) } 172 | } 173 | } 174 | 175 | fun saveInstanceState(target: Any, state: Bundle) { 176 | val key = getKeyForUuid(target) 177 | val uuid = getOrGenerateUuid(target) 178 | state.putString(key, uuid) 179 | saveToMemoryAndDiskIfNecessary(uuid, state) 180 | state.clear() 181 | state.putString(key, uuid) 182 | } 183 | 184 | private fun saveToMemoryAndDiskIfNecessary(uuid: String, bundle: Bundle) { 185 | val state = Bundle(bundle) 186 | wrapOptimizedObjects(state) 187 | uuidBundleMap[uuid] = state 188 | queueDiskWritingIfNecessary(uuid, state) 189 | } 190 | 191 | private fun writeToDisk(uuid: String, bundle: Bundle) { 192 | val bytes = Converter.toBytes(bundle) 193 | diskHandler.putBytes(uuid, bytes) 194 | } 195 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/Formatter.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.app.Activity 4 | import android.os.Bundle 5 | import androidx.fragment.app.Fragment 6 | import androidx.fragment.app.FragmentManager 7 | import com.kernel.bundlesaver.utils.bundleBreakdown 8 | import com.kernel.bundlesaver.utils.kb 9 | 10 | /** 11 | * Interface that provides flexibility in how BundleSaver's output is formatted. 12 | * The default implementation [DefaultFormatter] should be suitable for most use cases. 13 | */ 14 | interface Formatter { 15 | fun format(activity: Activity, bundle: Bundle): String 16 | fun format(fragmentManager: FragmentManager, fragment: Fragment, bundle: Bundle): String 17 | fun format(size: Int, limit: Int): String 18 | } 19 | 20 | /** 21 | * The default implementation of the [Formatter] interface. 22 | */ 23 | class DefaultFormatter : Formatter { 24 | 25 | override fun format(activity: Activity, bundle: Bundle): String { 26 | return "${activity.javaClass.simpleName}.onSaveInstanceState wrote: ${bundleBreakdown(bundle)}" 27 | } 28 | 29 | override fun format(fragmentManager: FragmentManager, fragment: Fragment, bundle: Bundle): String { 30 | var message = "${fragment.javaClass.simpleName}.onSaveInstanceState wrote: ${bundleBreakdown(bundle)}" 31 | val fragmentArguments = fragment.arguments 32 | if (fragmentArguments != null) { 33 | message += "\n* fragment arguments = ${bundleBreakdown(fragmentArguments)}" 34 | } 35 | return message 36 | } 37 | 38 | override fun format(size: Int, limit: Int): String { 39 | return "Bundle size exceeded the limit of ${kb(limit)} KB. Current size: ${kb(size)}" 40 | } 41 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/FragmentSavedStateLogger.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.os.Bundle 4 | import androidx.fragment.app.Fragment 5 | import androidx.fragment.app.FragmentManager 6 | 7 | /** 8 | * [FragmentManager.FragmentLifecycleCallbacks] implementation that logs information about the 9 | * saved state of Fragments. 10 | */ 11 | internal class FragmentSavedStateLogger( 12 | private val formatter: Formatter, 13 | private val logger: Logger 14 | ) : FragmentManager.FragmentLifecycleCallbacks() { 15 | 16 | private val savedStates = HashMap() 17 | private var isLogging = true 18 | 19 | override fun onFragmentSaveInstanceState(fragmentManager: FragmentManager, fragment: Fragment, outState: Bundle) { 20 | if (isLogging) { 21 | savedStates[fragment] = outState 22 | } 23 | } 24 | 25 | override fun onFragmentStopped(fragmentManager: FragmentManager, fragment: Fragment) { 26 | logAndRemoveSavedState(fragment, fragmentManager) 27 | } 28 | 29 | override fun onFragmentDestroyed(fragmentManager: FragmentManager, fragment: Fragment) { 30 | logAndRemoveSavedState(fragment, fragmentManager) 31 | } 32 | 33 | private fun logAndRemoveSavedState(fragment: Fragment, fragmentManager: FragmentManager) { 34 | val savedState = savedStates.remove(fragment) 35 | if (savedState != null) { 36 | try { 37 | val message = formatter.format( 38 | fragmentManager = fragmentManager, 39 | fragment = fragment, 40 | bundle = savedState 41 | ) 42 | logger.log(message = message) 43 | } catch (exception: RuntimeException) { 44 | logger.logException(exception = exception) 45 | } 46 | } 47 | } 48 | 49 | internal fun startLogging() { 50 | isLogging = true 51 | } 52 | 53 | internal fun stopLogging() { 54 | isLogging = false 55 | } 56 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/Logger.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | import android.util.Log 4 | 5 | /** 6 | * Interface that provides flexibility in how BundleSaver's output is logged. 7 | * The default implementation [DefaultLogger] should be suitable for most use cases. 8 | */ 9 | interface Logger { 10 | fun log(message: String) 11 | fun logException(exception: Exception) 12 | } 13 | 14 | /** 15 | * The default implementation of the [Logger] interface, which logs messages to Logcat. 16 | */ 17 | class DefaultLogger(private val priority: Int = Log.DEBUG, private val tag: String = "BundleSaver") : Logger { 18 | 19 | override fun log(message: String) { 20 | Log.println(priority, tag, message) 21 | } 22 | 23 | override fun logException(exception: Exception) { 24 | Log.w(tag, exception.message, exception) 25 | } 26 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/SizeTree.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver 2 | 3 | /** 4 | * Data class representing a hierarchical structure of items with associated sizes. 5 | * Each node in the tree has a unique key, a total size, and a list of subtrees. 6 | */ 7 | internal data class SizeTree( 8 | val key: String, 9 | val totalSize: Int, 10 | val subTrees: List = emptyList() 11 | ) -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/disk/DiskHandler.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.disk 2 | 3 | /** 4 | * A simple interface for managing the storage and retrieval of data to and from disk. All calls 5 | * should be assumed to be blocking. 6 | */ 7 | internal interface DiskHandler { 8 | /** 9 | * Clears any saved data associated with the given `key`. 10 | * 11 | * @param key The key for the saved data to clear. 12 | */ 13 | fun clear(key: String) 14 | 15 | /** 16 | * Clears all saved data currently stored by the handler. 17 | */ 18 | fun clearAll() 19 | 20 | /** 21 | * Retrieves the saved data associated with the given `key` as a byte array (or 22 | * `null` if there is no data available). 23 | * 24 | * @param key The key associated with the saved data to be retrieved. 25 | * @return The saved data as a byte array (or `null` if there is no data available). 26 | */ 27 | fun getBytes(key: String): ByteArray? 28 | 29 | /** 30 | * Stores the given `bytes` to disk and associates them with the given `key` for 31 | * retrieval later. 32 | * 33 | * @param key The key to associate with the saved data. 34 | * @param bytes The data to be saved. 35 | */ 36 | fun putBytes(key: String, bytes: ByteArray) 37 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/disk/FileDiskHandler.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.disk 2 | 3 | import android.content.Context 4 | import androidx.annotation.Nullable 5 | import java.io.File 6 | import java.io.FileInputStream 7 | import java.io.FileOutputStream 8 | import java.util.concurrent.ConcurrentHashMap 9 | import java.util.concurrent.ExecutorService 10 | import java.util.concurrent.Future 11 | import java.util.concurrent.TimeUnit 12 | 13 | private const val DIRECTORY_NAME = "bundle_saver" 14 | private const val BACKGROUND_WAIT_TIMEOUT_MS = 1000L 15 | 16 | /** 17 | * A simple implementation of [DiskHandler] that saves the requested data to individual files. 18 | * Similar to [android.content.SharedPreferences], this implementation will begin loading the 19 | * saved data into memory as soon as it is constructed and block on the first call until all data 20 | * is loaded (or some cutoff is reached). 21 | */ 22 | internal class FileDiskHandler(context: Context, executorService: ExecutorService) : DiskHandler { 23 | 24 | private val directory: File = context.getDir(DIRECTORY_NAME, Context.MODE_PRIVATE) 25 | private val pendingLoadFuture: Future<*> = executorService.submit { loadAllFiles() } 26 | private val keyByteMap = ConcurrentHashMap() 27 | 28 | /** 29 | * Determines whether the [waitForFilesToLoad] call has completed in some way. 30 | */ 31 | @Volatile 32 | private var isLoadedOrTimedOut = false 33 | 34 | override fun clearAll() { 35 | cancelFileLoading() 36 | keyByteMap.clear() 37 | deleteFilesByKey(null) 38 | } 39 | 40 | override fun clear(key: String) { 41 | cancelFileLoading() 42 | keyByteMap.remove(key) 43 | deleteFilesByKey(key) 44 | } 45 | 46 | override fun getBytes(key: String): ByteArray? { 47 | waitForFilesToLoad() 48 | return getBytesInternal(key) 49 | } 50 | 51 | override fun putBytes(key: String, bytes: ByteArray) { 52 | // Place the data in memory first 53 | keyByteMap[key] = bytes 54 | 55 | // Write the data to disk 56 | val file = File(directory, key) 57 | FileOutputStream(file).use { outStream -> 58 | outStream.write(bytes) 59 | } 60 | } 61 | 62 | /** 63 | * Cancels any pending file loading that happens at startup. 64 | */ 65 | private fun cancelFileLoading() { 66 | pendingLoadFuture.cancel(true) 67 | } 68 | 69 | /** 70 | * Deletes all files associated with the given [key]. If the key is null, then 71 | * all stored files will be deleted. 72 | * 73 | * @param key The key associated with the data to delete (or null if all data should be 74 | * deleted). 75 | */ 76 | private fun deleteFilesByKey(key: String?) { 77 | directory.listFiles()?.forEach { file -> 78 | if (key == null || getFileNameForKey(key) == file.name) { 79 | file.delete() 80 | } 81 | } 82 | } 83 | 84 | @Nullable 85 | private fun getBytesFromDisk(key: String): ByteArray? { 86 | val file = getFileByKey(key) ?: return null 87 | 88 | return FileInputStream(file).use { inputStream -> 89 | val bytes = ByteArray(file.length().toInt()) 90 | inputStream.read(bytes) 91 | bytes 92 | } 93 | } 94 | 95 | @Nullable 96 | private fun getBytesInternal(key: String): ByteArray? { 97 | // Check for data loaded into memory from the initial load 98 | val cachedBytes = keyByteMap[key] 99 | if (cachedBytes != null) { 100 | return cachedBytes 101 | } 102 | 103 | // Get bytes from disk and place into memory if necessary 104 | val bytes = getBytesFromDisk(key) 105 | if (bytes != null) { 106 | keyByteMap[key] = bytes 107 | } 108 | 109 | return bytes 110 | } 111 | 112 | private fun getFileNameForKey(key: String): String { 113 | // For now the key and filename are equivalent 114 | return key 115 | } 116 | 117 | @Nullable 118 | private fun getFileByKey(key: String): File? { 119 | return directory.listFiles()?.find { file -> 120 | getFileNameForKey(key) == file.name 121 | } 122 | } 123 | 124 | private fun getKeyForFileName(fileName: String): String { 125 | // For now the key and filename are equivalent 126 | return fileName 127 | } 128 | 129 | private fun loadAllFiles() { 130 | directory.listFiles()?.forEach { file -> 131 | // Populate the cached map 132 | val key = getKeyForFileName(file.name) 133 | getBytesInternal(key) 134 | } 135 | } 136 | 137 | private fun waitForFilesToLoad() { 138 | if (isLoadedOrTimedOut) { 139 | // No need to wait. 140 | return 141 | } 142 | try { 143 | pendingLoadFuture.get(BACKGROUND_WAIT_TIMEOUT_MS, TimeUnit.MILLISECONDS) 144 | } catch (e: Exception) { 145 | // We've made a best effort to load the data in the background. We can simply proceed 146 | // here. 147 | } 148 | isLoadedOrTimedOut = true 149 | } 150 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/exceptions/BundleSizeExceededException.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.exceptions 2 | 3 | /** 4 | * Custom exception thrown when the size of a Bundle exceeds the specified limit. 5 | */ 6 | class BundleSizeExceededException(message: String) : Exception(message) -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/utils/Converter.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.utils 2 | 3 | import android.os.Bundle 4 | import android.os.Parcel 5 | 6 | /** 7 | * Helper class for converting [Bundle] instances to and from bytes. 8 | */ 9 | internal object Converter { 10 | 11 | /** 12 | * Converts the given [Bundle] to raw bytes. 13 | * 14 | * Note that if the [Bundle] contains some highly specialized classes 15 | * [android.os.IBinder], this process will fail. 16 | */ 17 | fun toBytes(bundle: Bundle): ByteArray { 18 | val parcel = Parcel.obtain() 19 | parcel.writeBundle(bundle) 20 | val bytes = parcel.marshall() 21 | parcel.recycle() 22 | return bytes 23 | } 24 | 25 | /** 26 | * Converts the given bytes to a [Bundle]. 27 | * 28 | * Note that if the bytes do not represent a [Bundle] that was previously converted with 29 | * [toBytes], this process will likely fail and will return `null`. 30 | */ 31 | fun fromBytes(bytes: ByteArray): Bundle? { 32 | val parcel = Parcel.obtain() 33 | parcel.unmarshall(bytes, 0, bytes.size) 34 | parcel.setDataPosition(0) 35 | val bundle: Bundle? = try { 36 | parcel.readBundle(Converter::class.java.classLoader) 37 | } catch (e: IllegalArgumentException) { 38 | null 39 | } catch (e: IllegalStateException) { 40 | null 41 | } 42 | parcel.recycle() 43 | return bundle 44 | } 45 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/utils/Size.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.utils 2 | 3 | import android.os.Bundle 4 | import android.os.Parcel 5 | import com.kernel.bundlesaver.SizeTree 6 | import java.util.Locale 7 | 8 | /** 9 | * Measure the sizes of all the values in a typed [Bundle] when written to a 10 | * [Parcel]. Returns a map from keys to the sizes, in bytes, of the associated values in 11 | * the Bundle. 12 | */ 13 | internal fun sizeTreeFromBundle(bundle: Bundle): SizeTree { 14 | val results = ArrayList(bundle.size()) 15 | // We measure the totalSize of each value by measuring the total totalSize of the bundle before and 16 | // after removing that value and calculating the difference. We make a copy of the original 17 | // bundle so we can put all the original values back at the end. It's not possible to 18 | // carry out the measurements on the copy because of the way Android parcelables work 19 | // under the hood where certain objects are actually stored as references. 20 | val copy = Bundle(bundle) 21 | try { 22 | var bundleSize = sizeAsParcel(bundle) 23 | // Iterate over copy's keys because we're removing those of the original bundle 24 | for (key in copy.keySet()) { 25 | bundle.remove(key) 26 | val newBundleSize = sizeAsParcel(bundle) 27 | val valueSize = bundleSize - newBundleSize 28 | results.add(SizeTree(key, valueSize, emptyList())) 29 | bundleSize = newBundleSize 30 | } 31 | } finally { 32 | // Put everything back into original bundle 33 | bundle.putAll(copy) 34 | } 35 | return SizeTree("Bundle" + System.identityHashCode(bundle), sizeAsParcel(bundle), results) 36 | } 37 | 38 | /** 39 | * Measure the size of a typed [Bundle] when written to a [Parcel]. 40 | */ 41 | internal fun sizeAsParcel(bundle: Bundle): Int { 42 | try { 43 | val parcel = Parcel.obtain() 44 | try { 45 | parcel.writeBundle(bundle) 46 | return parcel.dataSize() 47 | } finally { 48 | parcel.recycle() 49 | } 50 | } catch (exception: OutOfMemoryError) { 51 | return -1 52 | } 53 | } 54 | 55 | /** 56 | * Converts the given number of bytes to kilobytes. 57 | */ 58 | internal fun kb(bytes: Int): Float { 59 | return bytes.toFloat() / 1000f 60 | } 61 | 62 | /** 63 | * Return a formatted String containing a breakdown of the contents of a [Bundle]. 64 | * 65 | * @param bundle to format 66 | * @return a nicely formatted string (multi-line) 67 | */ 68 | fun bundleBreakdown(bundle: Bundle): String { 69 | val (key, totalSize, subTrees) = sizeTreeFromBundle(bundle) 70 | var result = String.format( 71 | Locale.UK, 72 | "%s contains %d keys and measures %,.1f KB when serialized as a Parcel", 73 | key, 74 | subTrees.size, 75 | kb(totalSize) 76 | ) 77 | for ((key1, totalSize1) in subTrees) { 78 | result += String.format( 79 | Locale.UK, 80 | "\n* %s = %,.1f KB", 81 | key1, kb(totalSize1) 82 | ) 83 | } 84 | return result 85 | } -------------------------------------------------------------------------------- /library/src/main/java/com/kernel/bundlesaver/wrapper/BitmapWrapper.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.wrapper 2 | 3 | import android.graphics.Bitmap 4 | import android.os.Bundle 5 | import android.os.Parcel 6 | import android.os.Parcelable 7 | import java.nio.ByteBuffer 8 | 9 | /** 10 | * A wrapper class for a [Bitmap] that allows it to be placed into a [android.os.Bundle] 11 | * and written to disk. 12 | */ 13 | internal class BitmapWrapper(internal val bitmap: Bitmap) : Parcelable { 14 | 15 | //region Parcelable 16 | constructor(parcel: Parcel) : this( 17 | bitmap = Bitmap.createBitmap( 18 | parcel.readInt(), 19 | parcel.readInt(), 20 | Bitmap.Config.values()[parcel.readInt()] 21 | ).apply { 22 | parcel.createByteArray()?.also { 23 | copyPixelsFromBuffer(ByteBuffer.wrap(it)) 24 | } 25 | } 26 | ) 27 | 28 | override fun writeToParcel(dest: Parcel, flags: Int) { 29 | val size = bitmap.allocationByteCount 30 | val byteBuffer = ByteBuffer.allocate(size) 31 | bitmap.copyPixelsToBuffer(byteBuffer) 32 | 33 | with(dest) { 34 | writeInt(bitmap.width) 35 | writeInt(bitmap.height) 36 | writeInt(bitmap.config.ordinal) 37 | writeByteArray(byteBuffer.array()) 38 | } 39 | } 40 | 41 | override fun describeContents(): Int = 0 42 | 43 | companion object CREATOR : Parcelable.Creator { 44 | override fun createFromParcel(parcel: Parcel): BitmapWrapper = BitmapWrapper(parcel) 45 | 46 | override fun newArray(size: Int): Array = arrayOfNulls(size) 47 | } 48 | //endregion Parcelable 49 | } 50 | 51 | /** 52 | * Manages the wrapping and unwrapping of certain [android.os.Parcelable] objects that use 53 | * native code to optimize their [android.os.Parcelable] implementations. If these objects are placed into a [Bundle] 54 | * unwrapped, they may cause a crash if the [Bundle] is written to a [android.os.Parcel] that then calls 55 | * [Parcel.marshall]. 56 | */ 57 | internal fun unwrapOptimizedObjects(bundle: Bundle) { 58 | val keys = bundle.keySet() 59 | for (key in keys) { 60 | val value = bundle.get(key) 61 | if (value is BitmapWrapper) { 62 | bundle.putParcelable(key, value.bitmap) 63 | } 64 | } 65 | } 66 | 67 | internal fun wrapOptimizedObjects(bundle: Bundle) { 68 | val keys = bundle.keySet() 69 | for (key in keys) { 70 | val value = bundle.get(key) 71 | if (value is Bitmap) { 72 | bundle.putParcelable(key, BitmapWrapper(value)) 73 | } 74 | } 75 | } -------------------------------------------------------------------------------- /sample/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /sample/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: "com.android.application" 2 | apply plugin: "kotlin-android" 3 | 4 | android { 5 | compileSdkVersion versions.compileSdk 6 | defaultConfig { 7 | minSdkVersion versions.minSdk 8 | targetSdkVersion versions.targetSdk 9 | applicationId "com.kernel.bundlesaver.sample" 10 | versionCode 1 11 | versionName "1.0" 12 | } 13 | 14 | buildTypes { 15 | debug { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | release { 20 | minifyEnabled true 21 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 22 | } 23 | } 24 | 25 | compileOptions { 26 | sourceCompatibility JavaVersion.VERSION_1_8 27 | targetCompatibility JavaVersion.VERSION_1_8 28 | } 29 | } 30 | 31 | dependencies { 32 | debugImplementation project(':library') 33 | //implementation "com.github.kernel0x:bundlesaver:1.0.0" 34 | implementation "androidx.fragment:fragment:$versions.androidxFragment" 35 | } -------------------------------------------------------------------------------- /sample/proguard-rules.pro: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kernel0x/bundlesaver/8a20183fbdb6f731b7fcc0d10308bd3dffb53299/sample/proguard-rules.pro -------------------------------------------------------------------------------- /sample/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 9 | 10 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /sample/src/main/java/com/kernel/bundlesaver/sample/App.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.sample 2 | 3 | import android.app.Application 4 | import com.kernel.bundlesaver.BundleManager 5 | 6 | class App : Application() { 7 | 8 | override fun onCreate() { 9 | super.onCreate() 10 | BundleManager.initialize(this) 11 | } 12 | } -------------------------------------------------------------------------------- /sample/src/main/java/com/kernel/bundlesaver/sample/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.kernel.bundlesaver.sample 2 | 3 | import android.app.Activity 4 | import android.os.Bundle 5 | import com.kernel.bundlesaver.BundleManager 6 | 7 | class MainActivity : Activity() { 8 | 9 | override fun onCreate(savedInstanceState: Bundle?) { 10 | BundleManager.restoreInstanceState(this, savedInstanceState) 11 | super.onCreate(savedInstanceState) 12 | } 13 | 14 | override fun onSaveInstanceState(outState: Bundle) { 15 | val largeObject = ByteArray(10 * 1024 * 1024) // 10 МБ 16 | outState.putByteArray("test", largeObject) 17 | super.onSaveInstanceState(outState) 18 | BundleManager.saveInstanceState(this, outState) 19 | } 20 | } -------------------------------------------------------------------------------- /sample/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | -------------------------------------------------------------------------------- /sample/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Bundle Saver Sample 3 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ":sample" 2 | include ':library' --------------------------------------------------------------------------------