├── app
    ├── .gitignore
    ├── src
    │   └── main
    │   │   ├── res
    │   │       ├── drawable-hdpi
    │   │       │   └── ic_launcher.png
    │   │       ├── drawable-mdpi
    │   │       │   └── ic_launcher.png
    │   │       ├── drawable-xhdpi
    │   │       │   └── ic_launcher.png
    │   │       ├── drawable-xxhdpi
    │   │       │   └── ic_launcher.png
    │   │       ├── values
    │   │       │   ├── styles.xml
    │   │       │   └── strings.xml
    │   │       ├── drawable
    │   │       │   ├── bg_layout_1.xml
    │   │       │   └── bg_layout_2.xml
    │   │       └── layout
    │   │       │   ├── include_layout.xml
    │   │       │   └── activity_main.xml
    │   │   ├── AndroidManifest.xml
    │   │   └── java
    │   │       └── net
    │   │           └── danlew
    │   │               └── hwlayers
    │   │                   └── MainActivity.java
    └── build.gradle
├── settings.gradle
├── README.md
├── gradle
    └── wrapper
    │   ├── gradle-wrapper.jar
    │   └── gradle-wrapper.properties
├── .gitignore
├── gradlew.bat
├── gradlew
└── LICENSE


/app/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 | 


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/settings.gradle:
--------------------------------------------------------------------------------
1 | include ':app'
2 | 


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/README.md:
--------------------------------------------------------------------------------
1 | # android-hw-layers-sample
2 | Sample project showing how to use hardware layers for great good
3 | 


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/gradle/wrapper/gradle-wrapper.jar:
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https://raw.githubusercontent.com/dlew/android-hw-layers-sample/HEAD/gradle/wrapper/gradle-wrapper.jar


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/app/src/main/res/drawable-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/dlew/android-hw-layers-sample/HEAD/app/src/main/res/drawable-hdpi/ic_launcher.png


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/app/src/main/res/drawable-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/dlew/android-hw-layers-sample/HEAD/app/src/main/res/drawable-mdpi/ic_launcher.png


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/app/src/main/res/drawable-xhdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/dlew/android-hw-layers-sample/HEAD/app/src/main/res/drawable-xhdpi/ic_launcher.png


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/app/src/main/res/drawable-xxhdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/dlew/android-hw-layers-sample/HEAD/app/src/main/res/drawable-xxhdpi/ic_launcher.png


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/app/src/main/res/values/styles.xml:
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1 | <resources>
2 | 
3 |     <!-- Base application theme. -->
4 |     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
5 |         <!-- Customize your theme here. -->
6 |     </style>
7 | 
8 | </resources>
9 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/bg_layout_1.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <shape xmlns:android="http://schemas.android.com/apk/res/android"
3 |     android:shape="rectangle">
4 | 
5 |     <corners android:radius="8dp" />
6 | 
7 |     <solid android:color="#88FFFF" />
8 | 
9 | </shape>


--------------------------------------------------------------------------------
/app/src/main/res/drawable/bg_layout_2.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <shape xmlns:android="http://schemas.android.com/apk/res/android"
3 |     android:shape="rectangle">
4 | 
5 |     <corners android:radius="8dp" />
6 | 
7 |     <solid android:color="#88FF88" />
8 | 
9 | </shape>


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Wed Apr 10 15:27:10 PDT 2013
2 | distributionBase=GRADLE_USER_HOME
3 | distributionPath=wrapper/dists
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.7-all.zip
7 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Built application files
 2 | *.apk
 3 | *.ap_
 4 | 
 5 | # Files for the Dalvik VM
 6 | *.dex
 7 | 
 8 | # Java class files
 9 | *.class
10 | 
11 | # Generated files
12 | bin/
13 | gen/
14 | 
15 | # Gradle files
16 | .gradle/
17 | build/
18 | 
19 | # Local configuration file (sdk path, etc)
20 | local.properties
21 | 
22 | # Proguard folder generated by Eclipse
23 | proguard/
24 | 
25 | # Log Files
26 | *.log
27 | 


--------------------------------------------------------------------------------
/app/build.gradle:
--------------------------------------------------------------------------------
 1 | apply plugin: 'com.android.application'
 2 | 
 3 | android {
 4 |     compileSdkVersion 23
 5 |     buildToolsVersion "23.0.1"
 6 | 
 7 |     defaultConfig {
 8 |         applicationId "net.danlew.hwlayers"
 9 |         minSdkVersion 15
10 |         targetSdkVersion 21
11 |         versionCode 1
12 |         versionName "1.0"
13 |     }
14 | }
15 | 
16 | dependencies {
17 |     compile 'com.android.support:appcompat-v7:23.1.0'
18 | }
19 | 


--------------------------------------------------------------------------------
/app/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     package="net.danlew.hwlayers" >
 4 | 
 5 |     <application
 6 |         android:allowBackup="true"
 7 |         android:icon="@drawable/ic_launcher"
 8 |         android:label="@string/app_name"
 9 |         android:theme="@style/AppTheme" >
10 |         <activity
11 |             android:name=".MainActivity"
12 |             android:label="@string/app_name" >
13 |             <intent-filter>
14 |                 <action android:name="android.intent.action.MAIN" />
15 | 
16 |                 <category android:name="android.intent.category.LAUNCHER" />
17 |             </intent-filter>
18 |         </activity>
19 |     </application>
20 | 
21 | </manifest>
22 | 


--------------------------------------------------------------------------------
/app/src/main/res/values/strings.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <resources>
 3 | 
 4 |     <string name="app_name">HW Layers</string>
 5 |     <string name="animate">Animate!</string>
 6 |     <string name="layout1_title">The First Layout</string>
 7 |     <string name="layout2_title">The Second Layout</string>
 8 |     <string name="use_hw_layers">Use HW Layers</string>
 9 |     <string name="use_complex_animation">Use Complex Animation</string>
10 | 
11 |     <string name="lorem_ipsum">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</string>
12 | 
13 | 
14 | </resources>
15 | 


--------------------------------------------------------------------------------
/app/src/main/res/layout/include_layout.xml:
--------------------------------------------------------------------------------
 1 | <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:tools="http://schemas.android.com/tools"
 3 |     android:layout_width="match_parent"
 4 |     android:layout_height="match_parent"
 5 |     android:orientation="vertical"
 6 |     android:padding="8dp"
 7 |     tools:background="@drawable/bg_layout_1">
 8 | 
 9 |     <TextView
10 |         android:id="@+id/title"
11 |         android:layout_width="wrap_content"
12 |         android:layout_height="wrap_content"
13 |         android:layout_gravity="center_horizontal"
14 |         android:textSize="24sp"
15 |         android:textStyle="bold"
16 |         tools:text="@string/layout1_title" />
17 | 
18 |     <TextView
19 |         android:id="@+id/lorem_ipsum"
20 |         android:layout_width="match_parent"
21 |         android:layout_height="0dp"
22 |         android:layout_marginTop="8dp"
23 |         android:layout_weight="1"
24 |         android:text="@string/lorem_ipsum" />
25 | 
26 | </LinearLayout>


--------------------------------------------------------------------------------
/app/src/main/res/layout/activity_main.xml:
--------------------------------------------------------------------------------
 1 | <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:tools="http://schemas.android.com/tools"
 3 |     android:layout_width="match_parent"
 4 |     android:layout_height="match_parent"
 5 |     android:orientation="vertical"
 6 |     tools:context=".MainActivity">
 7 | 
 8 |     <FrameLayout
 9 |         android:layout_width="match_parent"
10 |         android:layout_height="0dp"
11 |         android:layout_weight="1">
12 | 
13 |         <include
14 |             android:id="@+id/layout_1"
15 |             layout="@layout/include_layout"
16 |             android:layout_width="match_parent"
17 |             android:layout_height="match_parent"
18 |             android:layout_margin="8dp" />
19 | 
20 |         <include
21 |             android:id="@+id/layout_2"
22 |             layout="@layout/include_layout"
23 |             android:layout_width="match_parent"
24 |             android:layout_height="match_parent"
25 |             android:layout_margin="8dp" />
26 |     </FrameLayout>
27 | 
28 |     <RelativeLayout
29 |         android:layout_width="match_parent"
30 |         android:layout_height="wrap_content"
31 |         android:layout_marginBottom="8dp"
32 |         android:orientation="horizontal"
33 |         android:paddingLeft="8dp"
34 |         android:paddingRight="8dp">
35 | 
36 |         <LinearLayout
37 |             android:layout_width="wrap_content"
38 |             android:layout_height="wrap_content"
39 |             android:layout_centerVertical="true"
40 |             android:orientation="vertical">
41 | 
42 |             <CheckBox
43 |                 android:id="@+id/hw_layers_checkbox"
44 |                 android:layout_width="wrap_content"
45 |                 android:layout_height="wrap_content"
46 |                 android:text="@string/use_hw_layers" />
47 | 
48 |             <CheckBox
49 |                 android:id="@+id/complex_anim_checkbox"
50 |                 android:layout_width="wrap_content"
51 |                 android:layout_height="wrap_content"
52 |                 android:text="@string/use_complex_animation" />
53 |         </LinearLayout>
54 | 
55 | 
56 |         <Button
57 |             android:id="@+id/animate_button"
58 |             android:layout_width="wrap_content"
59 |             android:layout_height="wrap_content"
60 |             android:layout_alignParentRight="true"
61 |             android:layout_centerVertical="true"
62 |             android:text="@string/animate" />
63 | 
64 |     </RelativeLayout>
65 | 
66 | 
67 | </LinearLayout>
68 | 


--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
 1 | @if "%DEBUG%" == "" @echo off
 2 | @rem ##########################################################################
 3 | @rem
 4 | @rem  Gradle startup script for Windows
 5 | @rem
 6 | @rem ##########################################################################
 7 | 
 8 | @rem Set local scope for the variables with windows NT shell
 9 | if "%OS%"=="Windows_NT" setlocal
10 | 
11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
12 | set DEFAULT_JVM_OPTS=
13 | 
14 | set DIRNAME=%~dp0
15 | if "%DIRNAME%" == "" set DIRNAME=.
16 | set APP_BASE_NAME=%~n0
17 | set APP_HOME=%DIRNAME%
18 | 
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 | 
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 | 
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 | 
32 | goto fail
33 | 
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 | 
38 | if exist "%JAVA_EXE%" goto init
39 | 
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 | 
46 | goto fail
47 | 
48 | :init
49 | @rem Get command-line arguments, handling Windowz variants
50 | 
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | if "%@eval[2+2]" == "4" goto 4NT_args
53 | 
54 | :win9xME_args
55 | @rem Slurp the command line arguments.
56 | set CMD_LINE_ARGS=
57 | set _SKIP=2
58 | 
59 | :win9xME_args_slurp
60 | if "x%~1" == "x" goto execute
61 | 
62 | set CMD_LINE_ARGS=%*
63 | goto execute
64 | 
65 | :4NT_args
66 | @rem Get arguments from the 4NT Shell from JP Software
67 | set CMD_LINE_ARGS=%$
68 | 
69 | :execute
70 | @rem Setup the command line
71 | 
72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
73 | 
74 | @rem Execute Gradle
75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
76 | 
77 | :end
78 | @rem End local scope for the variables with windows NT shell
79 | if "%ERRORLEVEL%"=="0" goto mainEnd
80 | 
81 | :fail
82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
83 | rem the _cmd.exe /c_ return code!
84 | if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
85 | exit /b 1
86 | 
87 | :mainEnd
88 | if "%OS%"=="Windows_NT" endlocal
89 | 
90 | :omega
91 | 


--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env bash
  2 | 
  3 | ##############################################################################
  4 | ##
  5 | ##  Gradle start up script for UN*X
  6 | ##
  7 | ##############################################################################
  8 | 
  9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 10 | DEFAULT_JVM_OPTS=""
 11 | 
 12 | APP_NAME="Gradle"
 13 | APP_BASE_NAME=`basename "$0"`
 14 | 
 15 | # Use the maximum available, or set MAX_FD != -1 to use that value.
 16 | MAX_FD="maximum"
 17 | 
 18 | warn ( ) {
 19 |     echo "$*"
 20 | }
 21 | 
 22 | die ( ) {
 23 |     echo
 24 |     echo "$*"
 25 |     echo
 26 |     exit 1
 27 | }
 28 | 
 29 | # OS specific support (must be 'true' or 'false').
 30 | cygwin=false
 31 | msys=false
 32 | darwin=false
 33 | case "`uname`" in
 34 |   CYGWIN* )
 35 |     cygwin=true
 36 |     ;;
 37 |   Darwin* )
 38 |     darwin=true
 39 |     ;;
 40 |   MINGW* )
 41 |     msys=true
 42 |     ;;
 43 | esac
 44 | 
 45 | # For Cygwin, ensure paths are in UNIX format before anything is touched.
 46 | if $cygwin ; then
 47 |     [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
 48 | fi
 49 | 
 50 | # Attempt to set APP_HOME
 51 | # Resolve links: $0 may be a link
 52 | PRG="$0"
 53 | # Need this for relative symlinks.
 54 | while [ -h "$PRG" ] ; do
 55 |     ls=`ls -ld "$PRG"`
 56 |     link=`expr "$ls" : '.*-> \(.*\)$'`
 57 |     if expr "$link" : '/.*' > /dev/null; then
 58 |         PRG="$link"
 59 |     else
 60 |         PRG=`dirname "$PRG"`"/$link"
 61 |     fi
 62 | done
 63 | SAVED="`pwd`"
 64 | cd "`dirname \"$PRG\"`/" >&-
 65 | APP_HOME="`pwd -P`"
 66 | cd "$SAVED" >&-
 67 | 
 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 69 | 
 70 | # Determine the Java command to use to start the JVM.
 71 | if [ -n "$JAVA_HOME" ] ; then
 72 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 73 |         # IBM's JDK on AIX uses strange locations for the executables
 74 |         JAVACMD="$JAVA_HOME/jre/sh/java"
 75 |     else
 76 |         JAVACMD="$JAVA_HOME/bin/java"
 77 |     fi
 78 |     if [ ! -x "$JAVACMD" ] ; then
 79 |         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 80 | 
 81 | Please set the JAVA_HOME variable in your environment to match the
 82 | location of your Java installation."
 83 |     fi
 84 | else
 85 |     JAVACMD="java"
 86 |     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 87 | 
 88 | Please set the JAVA_HOME variable in your environment to match the
 89 | location of your Java installation."
 90 | fi
 91 | 
 92 | # Increase the maximum file descriptors if we can.
 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
 94 |     MAX_FD_LIMIT=`ulimit -H -n`
 95 |     if [ $? -eq 0 ] ; then
 96 |         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
 97 |             MAX_FD="$MAX_FD_LIMIT"
 98 |         fi
 99 |         ulimit -n $MAX_FD
100 |         if [ $? -ne 0 ] ; then
101 |             warn "Could not set maximum file descriptor limit: $MAX_FD"
102 |         fi
103 |     else
104 |         warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
105 |     fi
106 | fi
107 | 
108 | # For Darwin, add options to specify how the application appears in the dock
109 | if $darwin; then
110 |     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
111 | fi
112 | 
113 | # For Cygwin, switch paths to Windows format before running java
114 | if $cygwin ; then
115 |     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
116 |     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
117 | 
118 |     # We build the pattern for arguments to be converted via cygpath
119 |     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 |     SEP=""
121 |     for dir in $ROOTDIRSRAW ; do
122 |         ROOTDIRS="$ROOTDIRS$SEP$dir"
123 |         SEP="|"
124 |     done
125 |     OURCYGPATTERN="(^($ROOTDIRS))"
126 |     # Add a user-defined pattern to the cygpath arguments
127 |     if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 |         OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 |     fi
130 |     # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 |     i=0
132 |     for arg in "$@" ; do
133 |         CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 |         CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
135 | 
136 |         if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
137 |             eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 |         else
139 |             eval `echo args$i`="\"$arg\""
140 |         fi
141 |         i=$((i+1))
142 |     done
143 |     case $i in
144 |         (0) set -- ;;
145 |         (1) set -- "$args0" ;;
146 |         (2) set -- "$args0" "$args1" ;;
147 |         (3) set -- "$args0" "$args1" "$args2" ;;
148 |         (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 |         (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 |         (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 |         (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 |         (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 |         (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 |     esac
155 | fi
156 | 
157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
158 | function splitJvmOpts() {
159 |     JVM_OPTS=("$@")
160 | }
161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
163 | 
164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
165 | 


--------------------------------------------------------------------------------
/app/src/main/java/net/danlew/hwlayers/MainActivity.java:
--------------------------------------------------------------------------------
  1 | package net.danlew.hwlayers;
  2 | 
  3 | import android.animation.Animator;
  4 | import android.animation.AnimatorListenerAdapter;
  5 | import android.os.Bundle;
  6 | import android.support.annotation.DrawableRes;
  7 | import android.support.annotation.IdRes;
  8 | import android.support.annotation.StringRes;
  9 | import android.support.v7.app.AppCompatActivity;
 10 | import android.view.View;
 11 | import android.widget.CheckBox;
 12 | import android.widget.TextView;
 13 | 
 14 | public class MainActivity extends AppCompatActivity {
 15 | 
 16 |     private View mLayout1;
 17 |     private View mLoremIpsum1;
 18 | 
 19 |     private View mLayout2;
 20 |     private View mLoremIpsum2;
 21 | 
 22 |     // When checked, this enables using hardware layers on the main layouts
 23 |     private CheckBox mHwLayerCheckbox;
 24 | 
 25 |     // When checked, the animation gets a bit more complex - not only do the containers animate
 26 |     // but one of the views inside each do their own independent animation. This will cause the HW
 27 |     // layers to need to be constantly redrawn, which is detrimental to performance.
 28 |     //
 29 |     // In this case, the animation is simple enough that it still may run *close* to smooth, but if
 30 |     // there were a few extra Views or more work then this would chug.
 31 |     private CheckBox mComplexAnimationCheckbox;
 32 | 
 33 |     @Override
 34 |     protected void onCreate(Bundle savedInstanceState) {
 35 |         super.onCreate(savedInstanceState);
 36 | 
 37 |         setContentView(R.layout.activity_main);
 38 | 
 39 |         mHwLayerCheckbox = (CheckBox) findViewById(R.id.hw_layers_checkbox);
 40 |         mComplexAnimationCheckbox = (CheckBox) findViewById(R.id.complex_anim_checkbox);
 41 | 
 42 |         mLayout1 = configureLayout(R.id.layout_1, R.drawable.bg_layout_1, R.string.layout1_title);
 43 |         mLoremIpsum1 = mLayout1.findViewById(R.id.lorem_ipsum);
 44 |         mLayout2 = configureLayout(R.id.layout_2, R.drawable.bg_layout_2, R.string.layout2_title);
 45 |         mLoremIpsum2 = mLayout2.findViewById(R.id.lorem_ipsum);
 46 | 
 47 |         // Start with one of the two hidden
 48 |         mLayout2.setAlpha(0);
 49 | 
 50 |         findViewById(R.id.animate_button).setOnClickListener(new View.OnClickListener() {
 51 |             @Override public void onClick(View v) {
 52 |                 animate();
 53 |             }
 54 |         });
 55 |     }
 56 | 
 57 |     private View configureLayout(@IdRes int id, @DrawableRes int background, @StringRes int title) {
 58 |         View layout = findViewById(id);
 59 |         layout.setBackgroundResource(background);
 60 | 
 61 |         TextView titleView = (TextView) layout.findViewById(R.id.title);
 62 |         titleView.setText(title);
 63 | 
 64 |         return layout;
 65 |     }
 66 | 
 67 |     private void animate() {
 68 |         float layout1Alpha = mLayout1.getAlpha();
 69 |         if (layout1Alpha != 0 && layout1Alpha != 1) {
 70 |             // Mid-animation; don't animate
 71 |             return;
 72 |         }
 73 | 
 74 |         final View layoutIn = layout1Alpha == 0 ? mLayout1 : mLayout2;
 75 |         final View layoutOut = layoutIn == mLayout1 ? mLayout2 : mLayout1;
 76 | 
 77 |         int widthPixels = getResources().getDisplayMetrics().widthPixels;
 78 |         float scale = .5f;
 79 | 
 80 |         layoutIn.setTranslationX(widthPixels / 2);
 81 |         layoutIn.setScaleX(scale);
 82 |         layoutIn.setScaleY(scale);
 83 | 
 84 |         layoutIn.animate()
 85 |             .alpha(1)
 86 |             .translationX(0)
 87 |             .scaleX(1)
 88 |             .scaleY(1)
 89 |             .setListener(new AnimatorListenerAdapter() {
 90 |                 @Override
 91 |                 public void onAnimationStart(Animator animation) {
 92 |                     if (mHwLayerCheckbox.isChecked()) {
 93 |                         layoutIn.setLayerType(View.LAYER_TYPE_HARDWARE, null);
 94 |                     }
 95 |                 }
 96 | 
 97 |                 @Override
 98 |                 public void onAnimationEnd(Animator animation) {
 99 |                     if (mHwLayerCheckbox.isChecked()) {
100 |                         layoutIn.setLayerType(View.LAYER_TYPE_NONE, null);
101 |                     }
102 |                 }
103 |             })
104 |             .start();
105 | 
106 |         layoutOut.animate()
107 |             .alpha(0)
108 |             .translationX(-widthPixels / 2)
109 |             .scaleX(scale)
110 |             .scaleY(scale)
111 |             .setListener(new AnimatorListenerAdapter() {
112 |                 @Override
113 |                 public void onAnimationStart(Animator animation) {
114 |                     if (mHwLayerCheckbox.isChecked()) {
115 |                         layoutOut.setLayerType(View.LAYER_TYPE_HARDWARE, null);
116 |                     }
117 |                 }
118 | 
119 |                 @Override
120 |                 public void onAnimationEnd(Animator animation) {
121 |                     if (mHwLayerCheckbox.isChecked()) {
122 |                         layoutOut.setLayerType(View.LAYER_TYPE_NONE, null);
123 |                     }
124 |                 }
125 |             })
126 |             .start();
127 | 
128 |         if (mComplexAnimationCheckbox.isChecked()) {
129 |             final View ipsumIn = layoutIn == mLayout1 ? mLoremIpsum1 : mLoremIpsum2;
130 |             final View ipsumOut = layoutOut == mLayout2 ? mLoremIpsum2 : mLoremIpsum1;
131 | 
132 |             int heightPixels = getResources().getDisplayMetrics().heightPixels;
133 |             int target = heightPixels / 2;
134 | 
135 |             ipsumIn.setTranslationY(target);
136 |             ipsumIn.setAlpha(0);
137 | 
138 |             ipsumIn.animate()
139 |                 .translationY(0)
140 |                 .alpha(1)
141 |                 .start();
142 | 
143 |             ipsumOut.animate()
144 |                 .translationY(target)
145 |                 .alpha(0)
146 |                 .start();
147 |         }
148 |         else {
149 |             mLoremIpsum1.setTranslationY(0);
150 |             mLoremIpsum1.setAlpha(1);
151 |             mLoremIpsum2.setTranslationY(0);
152 |             mLoremIpsum2.setAlpha(1);
153 |         }
154 |     }
155 | 
156 | }
157 | 


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