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zhangming
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‎app/.gitignore‎

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/build

‎app/build.gradle‎

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apply plugin: 'com.android.application'
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android {
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compileSdkVersion 23
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buildToolsVersion "23.0.2"
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defaultConfig {
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applicationId "com.simen.dynamicclassloader"
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minSdkVersion 15
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targetSdkVersion 23
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versionCode 1
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versionName "1.0"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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compile fileTree(dir: 'libs', include: ['*.jar'])
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testCompile 'junit:junit:4.12'
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compile 'com.android.support:appcompat-v7:23.3.0'
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compile 'com.android.support:design:23.3.0'
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}

‎app/proguard-rules.pro‎

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in /Users/ABC/Library/Android/sdk/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the proguardFiles
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# directive in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}

‎app/src/androidTest/java/com/simen/dynamicclassloader/ApplicationTest.java‎

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package com.simen.dynamicclassloader;
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import android.app.Application;
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import android.test.ApplicationTestCase;
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/**
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* <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
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*/
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public class ApplicationTest extends ApplicationTestCase<Application> {
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public ApplicationTest() {
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super(Application.class);
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}
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}

‎app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest package="com.simen.dynamicclassloader"
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xmlns:android="http://schemas.android.com/apk/res/android">
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<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity
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android:name=".MainActivity"
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android:label="@string/app_name"
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android:theme="@style/AppTheme.NoActionBar">
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<intent-filter>
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<action android:name="android.intent.action.MAIN"/>
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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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<!-- <activity
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android:name="dynamicclassloader.loadingapk.MainActivity"
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android:label="@string/app_name"
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android:theme="@style/AppTheme.NoActionBar">
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</activity>-->
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</application>
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</manifest>

‎app/src/main/java/com/loading/Loading.java‎

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package com.loading;
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import android.content.Context;
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/**
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* Created by zhangming on 16/6/5.
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*/
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public interface Loading {
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public String getName();
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public boolean startLoading(String msg);
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public boolean startLoading(Context context, String msg);
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String getMessage(Context context, String msg);
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}

‎app/src/main/java/com/loading/MainLoader.java‎

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package com.loading;
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import android.content.Context;
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/**
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* Created by zhangming on 16/6/5.
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*/
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public class MainLoader implements Loading {
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@Override
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public String getName() {
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return "i am the baseloader(app)";
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}
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@Override
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public boolean startLoading(String msg) {
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System.out.println(msg);
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return true;
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}
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@Override
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public boolean startLoading(Context context, String msg) {
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System.out.println(msg);
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return true;
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}
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@Override
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public String getMessage(Context context, String msg) {
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return "baseapp:" + msg;
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}
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}

‎app/src/main/java/com/simen/dynamicclassloader/MainActivity.java‎

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package com.simen.dynamicclassloader;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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import android.os.Bundle;
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import android.os.Environment;
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import android.support.design.widget.FloatingActionButton;
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import android.support.design.widget.Snackbar;
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import android.util.Log;
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import android.view.View;
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import android.support.design.widget.NavigationView;
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import android.support.v4.view.GravityCompat;
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import android.support.v4.widget.DrawerLayout;
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import android.support.v7.app.ActionBarDrawerToggle;
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import android.support.v7.app.AppCompatActivity;
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import android.support.v7.widget.Toolbar;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.widget.Toast;
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import com.loading.Loading;
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import java.io.File;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import dalvik.system.BaseDexClassLoader;
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import dalvik.system.DexClassLoader;
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/**
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* support jar,apk,aar,dex
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*/
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public class MainActivity extends AppCompatActivity
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implements NavigationView.OnNavigationItemSelectedListener {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
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setSupportActionBar(toolbar);
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FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
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fab.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
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.setAction("Action", null).show();
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}
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});
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DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
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ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
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this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
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drawer.setDrawerListener(toggle);
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toggle.syncState();
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NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
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navigationView.setNavigationItemSelectedListener(this);
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}
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@Override
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public void onBackPressed() {
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DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
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if (drawer.isDrawerOpen(GravityCompat.START)) {
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drawer.closeDrawer(GravityCompat.START);
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} else {
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super.onBackPressed();
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}
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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@SuppressWarnings("StatementWithEmptyBody")
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@Override
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public boolean onNavigationItemSelected(MenuItem item) {
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// Handle navigation view item clicks here.
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int id = item.getItemId();
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if (id == R.id.nav_camera) {
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loadAndroidJar();
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} else if (id == R.id.nav_gallery) {
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loadUninstallApk();
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} else if (id == R.id.nav_slideshow) {
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loadInstallApk("dynamicclassloader.loadingapk");
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} else if (id == R.id.nav_manage) {
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loadDex();
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} else if (id == R.id.res_camera) {
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resAndroidJar();
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} else if (id == R.id.res_gallery) {
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resUninstallApk();
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} else if (id == R.id.res_slideshow) {
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resInstallApk("dynamicclassloader.loadingapk");
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} else if (id == R.id.res_manage) {
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resDex();
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}
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DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
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drawer.closeDrawer(GravityCompat.START);
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return true;
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}
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/**
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* @Title: loadUninstallApk
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* @Description: 动态加载未安装的apk
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*/
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private void loadUninstallApk() {
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String path = Environment.getExternalStorageDirectory() + File.separator;
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String filename = "loadingapk-debug.apk"; // 4.1以后不能够将optimizedDirectory设置到sd卡目录， 否则抛出异常.
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File optimizedDirectoryFile = getDir("dex", 0);
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DexClassLoader classLoader = new DexClassLoader(path + filename, optimizedDirectoryFile
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.getAbsolutePath(), null, getClassLoader());
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try { // 通过反射机制调用， 包名为com.example.loaduninstallapkdemo, 类名为UninstallApkActivity
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Class mLoadClass = classLoader.loadClass("com.loading.MainLoader");
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Constructor constructor = mLoadClass.getConstructor(new Class[]{});
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Object testClass = constructor.newInstance(new Object[]{});
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// 获取getName方法
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Method helloMethod = mLoadClass.getMethod("getName", new Class[]{});
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helloMethod.setAccessible(true);
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Object content = helloMethod.invoke(testClass, new Object[]{});
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Toast.makeText(MainActivity.this, content.toString(), Toast.LENGTH_LONG).show();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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private void loadUninstallApk(String msg) {
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String path = Environment.getExternalStorageDirectory() + File.separator;
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String filename = "loadingapk-debug.apk"; // 4.1以后不能够将optimizedDirectory设置到sd卡目录， 否则抛出异常.
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File optimizedDirectoryFile = getDir("dex", 0);
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DexClassLoader classLoader = new DexClassLoader(path + filename, optimizedDirectoryFile
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.getAbsolutePath(), null, getClassLoader());
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try { // 通过反射机制调用， 包名为com.loading, 类名为MainLoader
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Class mLoadClass = classLoader.loadClass("com.loading.MainLoader");
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Constructor constructor = mLoadClass.getConstructor(new Class[]{});
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Object testClass = constructor.newInstance(new Object[]{});
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// 获取startLoading方法
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Method helloMethod = mLoadClass.getMethod("getMessage", new Class[]{Context.class,
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String.class});
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helloMethod.setAccessible(true);
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//调用startLoading方法,并注入参数
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Object content = helloMethod.invoke(testClass, new Object[]{this, msg});
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Toast.makeText(MainActivity.this, content.toString(), Toast.LENGTH_LONG).show();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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private void resInstallApk(String packName) {
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}
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private void resUninstallApk() {
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}
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private void loadInstallApk(String pkgName) {
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try {
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Context context = createPackageContext(pkgName, Context.CONTEXT_IGNORE_SECURITY | Context
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.CONTEXT_INCLUDE_CODE);
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// // 获取动态加载得到的资源
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// Resources resources = context.getResources();
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// // 过去该apk中的字符串资源"app_name",并且toast出来，apk换肤的实现就是这种原理
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// String toast = resources.getString(resources.getIdentifier("app_name", "string", pkgName));
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// Toast.makeText(MainActivity.this, toast, Toast.LENGTH_SHORT).show();
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Class cls = context.getClassLoader().loadClass(pkgName + ".MainActivity");
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// 跳转到该Activity
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startActivity(new Intent(this, cls));
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} catch (ClassNotFoundException e) {
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e.printStackTrace();
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} catch (Resources.NotFoundException e) {
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e.printStackTrace();
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} catch (PackageManager.NameNotFoundException e) {
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e.printStackTrace();
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}
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}
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/**
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* @Title: loadandroidJar/loadAndroidAar
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* @Description: 项目工程中必须定义接口， 而被引入的第三方jar包实现这些接口，然后进行动态加载。
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* 相当于第三方按照接口协议来开发， 使得第三方应用可以以插件的形式动态加载到应用平台中。
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*/
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private void loadAndroidJar() {
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final File optimizedDexOutputPath = new File(Environment.getExternalStorageDirectory().toString()
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+ File.separator + "loadingandroidjar-debug.aar"); //jar also is supported
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BaseDexClassLoader cl = new BaseDexClassLoader(Environment.getExternalStorageDirectory().toString(),
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optimizedDexOutputPath, optimizedDexOutputPath.getAbsolutePath(), getClassLoader());
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Class libProviderClazz = null;
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try {
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// 载入JarLoader类,并且通过反射构建JarLoader对象,然后调用getName方法
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libProviderClazz = cl.loadClass("com.loading.MainLoader");
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Loading loader = (Loading) libProviderClazz.newInstance();
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Toast.makeText(MainActivity.this, loader.getName(), Toast.LENGTH_SHORT).show();
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} catch (ClassNotFoundException e) {
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e.printStackTrace();
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} catch (InstantiationException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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private void resAndroidJar() {
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}
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private void loadDex() {
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}
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private void resDex() {
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}
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}

‎app/src/main/res/drawable-v21/ic_menu_camera.xml‎

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<vector xmlns:android="http://schemas.android.com/apk/res/android"
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android:width="24dp"
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android:height="24dp"
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android:viewportHeight="24.0"
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android:viewportWidth="24.0">
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<path
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android:fillColor="#FF000000"
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android:pathData="M12,12m-3.2,0a3.2,3.2 0,1 1,6.4 0a3.2,3.2 0,1 1,-6.4 0"/>
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<path
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android:fillColor="#FF000000"
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android:pathData="M9,2L7.17,4H4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2V6c0,-1.1 -0.9,-2 -2,-2h-3.17L15,2H9zm3,15c-2.76,0 -5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5z"/>
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</vector>

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