├── .classpath
├── .gitignore
├── .project
├── AndroidManifest.xml
├── README.md
├── assets
    └── hello.dex
├── ic_launcher-web.png
├── libs
    └── android-support-v4.jar
├── proguard-project.txt
├── project.properties
├── res
    ├── drawable-hdpi
    │   └── ic_launcher.png
    ├── drawable-mdpi
    │   └── ic_launcher.png
    ├── drawable-xhdpi
    │   └── ic_launcher.png
    ├── drawable-xxhdpi
    │   └── ic_launcher.png
    ├── layout
    │   └── activity_main.xml
    └── values
    │   └── strings.xml
└── src
    └── nfh
        └── speeder
            └── sample
                └── android
                    └── customloaddexfile
                        ├── CustomizedDexClassLoader.java
                        ├── DexPreparationTask.java
                        └── MainActivity.java


/.classpath:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <classpath>
 3 | 	<classpathentry kind="src" path="src"/>
 4 | 	<classpathentry kind="src" path="gen"/>
 5 | 	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
 6 | 	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
 7 | 	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>
 8 | 	<classpathentry kind="output" path="bin/classes"/>
 9 | </classpath>
10 | 


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


--------------------------------------------------------------------------------
/.project:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <projectDescription>
 3 | 	<name>CustomLoadDexFile</name>
 4 | 	<comment></comment>
 5 | 	<projects>
 6 | 	</projects>
 7 | 	<buildSpec>
 8 | 		<buildCommand>
 9 | 			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
10 | 			<arguments>
11 | 			</arguments>
12 | 		</buildCommand>
13 | 		<buildCommand>
14 | 			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
15 | 			<arguments>
16 | 			</arguments>
17 | 		</buildCommand>
18 | 		<buildCommand>
19 | 			<name>org.eclipse.jdt.core.javabuilder</name>
20 | 			<arguments>
21 | 			</arguments>
22 | 		</buildCommand>
23 | 		<buildCommand>
24 | 			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
25 | 			<arguments>
26 | 			</arguments>
27 | 		</buildCommand>
28 | 	</buildSpec>
29 | 	<natures>
30 | 		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
31 | 		<nature>org.eclipse.jdt.core.javanature</nature>
32 | 	</natures>
33 | </projectDescription>
34 | 


--------------------------------------------------------------------------------
/AndroidManifest.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     package="nfh.speeder.sample.android.customloaddexfile"
 4 |     android:versionCode="1"
 5 |     android:versionName="1.0" >
 6 | 
 7 |     <uses-sdk
 8 |         android:minSdkVersion="10"
 9 |         android:targetSdkVersion="21" />
10 | 
11 |     <application
12 |         android:allowBackup="true"
13 |         android:icon="@drawable/ic_launcher"
14 |         android:label="@string/app_name" >
15 |         <activity
16 |             android:name=".MainActivity"
17 |             android:label="@string/app_name" >
18 |             <intent-filter>
19 |                 <action android:name="android.intent.action.MAIN" />
20 | 
21 |                 <category android:name="android.intent.category.LAUNCHER" />
22 |             </intent-filter>
23 |         </activity>
24 |     </application>
25 | 
26 | </manifest>
27 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | #CustomLoadDexFile
 2 | 
 3 | **It works on a pure Java lib. It do NOT guarantee that it will work in all situation**
 4 | 
 5 | This project is a sample Android project  to load compiled dex file.
 6 | 
 7 | Instead of dividing code in project, in my situation is code from third party Java library.
 8 | 
 9 | #Example
10 | 
11 | - Supposed `https://github.com/liratanak/hello-gradle` as the third party library
12 | - `hello-gradle.jar` should be found in folder `build/libs`
13 | - Compile `hello-gradle.jar` to `hello.dex` via this command `/path/to/sdk/build-tools/20.0.0/dx --dex --output="/path/to/CustomLoadDexFile/assets/hello.dex" "/path/to/hello-gradle/build/libs/hello-gradle.jar"`
14 | - The dex file should be in `assets` folder because the sample code is using that folder [_Remember_: Dex file could also be loaded from external resource such as SD card or even from network stream]
15 | 
16 | 
17 | #Reference
18 | - Custom Class Loading in Dalvik | http://android-developers.blogspot.com/2011/07/custom-class-loading-in-dalvik.html
19 | - Dex.java source code | https://android.googlesource.com/platform/libcore/+/master/dex/src/main/java/com/android/dex/Dex.java


--------------------------------------------------------------------------------
/assets/hello.dex:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/assets/hello.dex


--------------------------------------------------------------------------------
/ic_launcher-web.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/ic_launcher-web.png


--------------------------------------------------------------------------------
/libs/android-support-v4.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/libs/android-support-v4.jar


--------------------------------------------------------------------------------
/proguard-project.txt:
--------------------------------------------------------------------------------
 1 | # To enable ProGuard in your project, edit project.properties
 2 | # to define the proguard.config property as described in that file.
 3 | #
 4 | # Add project specific ProGuard rules here.
 5 | # By default, the flags in this file are appended to flags specified
 6 | # in ${sdk.dir}/tools/proguard/proguard-android.txt
 7 | # You can edit the include path and order by changing the ProGuard
 8 | # include property in project.properties.
 9 | #
10 | # For more details, see
11 | #   http://developer.android.com/guide/developing/tools/proguard.html
12 | 
13 | # Add any project specific keep options here:
14 | 
15 | # If your project uses WebView with JS, uncomment the following
16 | # and specify the fully qualified class name to the JavaScript interface
17 | # class:
18 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
19 | #   public *;
20 | #}
21 | 


--------------------------------------------------------------------------------
/project.properties:
--------------------------------------------------------------------------------
 1 | # This file is automatically generated by Android Tools.
 2 | # Do not modify this file -- YOUR CHANGES WILL BE ERASED!
 3 | #
 4 | # This file must be checked in Version Control Systems.
 5 | #
 6 | # To customize properties used by the Ant build system edit
 7 | # "ant.properties", and override values to adapt the script to your
 8 | # project structure.
 9 | #
10 | # To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
11 | #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
12 | 
13 | # Project target.
14 | target=android-19
15 | 


--------------------------------------------------------------------------------
/res/drawable-hdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/res/drawable-hdpi/ic_launcher.png


--------------------------------------------------------------------------------
/res/drawable-mdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/res/drawable-mdpi/ic_launcher.png


--------------------------------------------------------------------------------
/res/drawable-xhdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/res/drawable-xhdpi/ic_launcher.png


--------------------------------------------------------------------------------
/res/drawable-xxhdpi/ic_launcher.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/liratanak/custom-load-dex-file/6af406f05af7a8c99c98a4fcb2b57559459f5bc1/res/drawable-xxhdpi/ic_launcher.png


--------------------------------------------------------------------------------
/res/layout/activity_main.xml:
--------------------------------------------------------------------------------
 1 | <RelativeLayout 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 |     tools:context="${relativePackage}.${activityClass}" >
 6 | 
 7 |     <TextView
 8 |         android:id="@+id/textview"
 9 |         android:layout_width="wrap_content"
10 |         android:layout_height="wrap_content" />
11 | 
12 | </RelativeLayout>
13 | 


--------------------------------------------------------------------------------
/res/values/strings.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <resources>
3 | 
4 |     <string name="app_name">CustomLoadDexFile</string>
5 | 
6 | </resources>


--------------------------------------------------------------------------------
/src/nfh/speeder/sample/android/customloaddexfile/CustomizedDexClassLoader.java:
--------------------------------------------------------------------------------
 1 | package nfh.speeder.sample.android.customloaddexfile;
 2 | 
 3 | import java.io.File;
 4 | import java.util.concurrent.ExecutionException;
 5 | 
 6 | import android.content.Context;
 7 | import dalvik.system.DexClassLoader;
 8 | 
 9 | public class CustomizedDexClassLoader {
10 | 
11 | 	private static Context context;
12 | 
13 | 	private static DexClassLoader loader;
14 | 
15 | 	public static void setContext(Context context) {
16 | 		CustomizedDexClassLoader.context = context;
17 | 	}
18 | 
19 | 	public static DexClassLoader load(final String dexFileName) throws RuntimeException {
20 | 		if(null == context) {
21 | 			throw new RuntimeException("No context provided");
22 | 		}
23 | 		if(null == loader) {
24 | 			final File dexInternalStoragePath = new File(context.getDir("dex", Context.MODE_PRIVATE), dexFileName);
25 | 			if (!dexInternalStoragePath.exists()) {
26 | 				try {
27 | 					(new DexPreparationTask(context, dexFileName)).execute(dexInternalStoragePath).get();
28 | 				} catch (InterruptedException e) {
29 | 					throw new RuntimeException(e);
30 | 				} catch (ExecutionException e) {
31 | 					throw new RuntimeException(e);
32 | 				}
33 | 			}
34 | 			final File optimizedDexOutputPath = context.getDir("outdex", Context.MODE_PRIVATE);
35 | 
36 | 			loader = new DexClassLoader(dexInternalStoragePath.getAbsolutePath(), optimizedDexOutputPath.getAbsolutePath(), null, context.getClassLoader().getParent());
37 | 		}
38 | 		return loader;
39 | 	}
40 | }


--------------------------------------------------------------------------------
/src/nfh/speeder/sample/android/customloaddexfile/DexPreparationTask.java:
--------------------------------------------------------------------------------
 1 | package nfh.speeder.sample.android.customloaddexfile;
 2 | 
 3 | import java.io.BufferedInputStream;
 4 | import java.io.BufferedOutputStream;
 5 | import java.io.File;
 6 | import java.io.FileOutputStream;
 7 | import java.io.IOException;
 8 | import java.io.OutputStream;
 9 | 
10 | import android.content.Context;
11 | import android.os.AsyncTask;
12 | 
13 | public class DexPreparationTask extends AsyncTask<File, Void, Boolean> {
14 | 
15 | 	private Context mContext;
16 | 	private String mDexFileName;
17 | 	private final int BUF_SIZE = 8 * 1024;
18 | 
19 | 	public DexPreparationTask(Context context, String dexFileName) {
20 | 		mContext = context;
21 | 		mDexFileName = dexFileName;
22 | 	}
23 | 
24 | 	@Override
25 | 	protected Boolean doInBackground(File... dexInternalStoragePaths) {
26 | 		prepareDex(dexInternalStoragePaths[0]);
27 | 		return null;
28 | 	}
29 | 
30 | 	public boolean prepareDex(File dexInternalStoragePath) {
31 | 		BufferedInputStream bis = null;
32 | 		OutputStream dexWriter = null;
33 | 
34 | 		try {
35 | 			bis = new BufferedInputStream(mContext.getAssets().open(mDexFileName));
36 | 			dexWriter = new BufferedOutputStream(new FileOutputStream(dexInternalStoragePath));
37 | 			byte[] buf = new byte[BUF_SIZE];
38 | 			int len;
39 | 			while ((len = bis.read(buf, 0, BUF_SIZE)) > 0) {
40 | 				dexWriter.write(buf, 0, len);
41 | 			}
42 | 			dexWriter.close();
43 | 			bis.close();
44 | 			return true;
45 | 		} catch (IOException e) {
46 | 			if (dexWriter != null) {
47 | 				try {
48 | 					dexWriter.close();
49 | 				} catch (IOException ioe) {
50 | 					throw new RuntimeException(ioe);
51 | 				}
52 | 			}
53 | 			if (bis != null) {
54 | 				try {
55 | 					bis.close();
56 | 				} catch (IOException ioe) {
57 | 					throw new RuntimeException(ioe);
58 | 				}
59 | 			}
60 | 			return false;
61 | 		}
62 | 	}
63 | }
64 | 


--------------------------------------------------------------------------------
/src/nfh/speeder/sample/android/customloaddexfile/MainActivity.java:
--------------------------------------------------------------------------------
 1 | package nfh.speeder.sample.android.customloaddexfile;
 2 | 
 3 | import java.lang.reflect.InvocationTargetException;
 4 | import java.lang.reflect.Method;
 5 | 
 6 | import android.annotation.SuppressLint;
 7 | import android.app.Activity;
 8 | import android.os.Bundle;
 9 | import android.widget.TextView;
10 | import dalvik.system.DexClassLoader;
11 | 
12 | @SuppressLint("NewApi")
13 | public class MainActivity extends Activity {
14 | 
15 | 	TextView helloTextView;
16 | 	DexClassLoader dexClassLoader;
17 | 
18 | 	@Override
19 | 	protected void onCreate(Bundle savedInstanceState) {
20 | 		super.onCreate(savedInstanceState);
21 | 		setContentView(R.layout.activity_main);
22 | 
23 | 		CustomizedDexClassLoader.setContext(this);
24 | 
25 | 		try {
26 | 			dexClassLoader = CustomizedDexClassLoader.load("hello.dex");
27 | 		} catch (RuntimeException e) {
28 | 			throw new RuntimeException(e);
29 | 		}
30 | 
31 | 		helloTextView = (TextView) findViewById(R.id.textview);
32 | 	}
33 | 
34 | 	@Override
35 | 	protected void onStart() {
36 | 		super.onStart();
37 | 
38 | 		try {
39 | 
40 | 			Class<?> wordClass = dexClassLoader.loadClass("nfh.speeder.sample.gradle.hello.Word");
41 | 			Method speederMethod = wordClass.getMethod("speeder");
42 | 			String speeder = (String) speederMethod.invoke(wordClass.newInstance());
43 | 			helloTextView.setText("Hello " + speeder);
44 | 
45 | 			//The above 4 lines equals below
46 | 			//helloTextView.setText("Hello " + new nfh.speeder.sample.gradle.hello.Word().speeder());
47 | 
48 | 		} catch (ClassNotFoundException e) {
49 | 		} catch (NoSuchMethodException e) {
50 | 		} catch (IllegalAccessException e) {
51 | 		} catch (IllegalArgumentException e) {
52 | 		} catch (InvocationTargetException e) {
53 | 		} catch (InstantiationException e) {
54 | 		}
55 | 
56 | 	}
57 | }
58 | 


--------------------------------------------------------------------------------