refs #1, first commit

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
+    defaultConfig {
+        applicationId "cn.samuelnotes.multidexsample"
+        minSdkVersion 15
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+        multiDexEnabled true
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+
+    dexOptions {
+
+        preDexLibraries = false
+        javaMaxHeapSize "4g"
+
+    }
+
+    afterEvaluate {
+        tasks.matching {
+            it.name.startsWith('dex')
+        }.each { dx ->
+            if (dx.additionalParameters == null) {
+                dx.additionalParameters = []
+            }
+            dx.additionalParameters += '--multi-dex'
+            dx.additionalParameters += '--set-max-idx-number=48000'
+
+//            dx.additionalParameters += "--main-dex-list=$projectDir/multidex.keep".toString()
+        }
+    }
+
+
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.3.0'
+    testCompile 'junit:junit:4.12'
+
+    compile 'com.android.support:multidex:1.0.1'
+}

app/proguard-rules.pro

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

app/src/androidTest/java/cn/samuelnotes/multidexsample/ExampleInstrumentedTest.java

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+package cn.samuelnotes.multidexsample;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("cn.samuelnotes.multidexsimple", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="cn.samuelnotes.multidexsample">
+
+    <application
+        android:name=".MyApp"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity
+            android:name=".LoadResActivity"
+            android:alwaysRetainTaskState="false"
+            android:excludeFromRecents="true"
+            android:launchMode="singleTask"
+            android:process=":mini"
+            android:screenOrientation="portrait"
+            android:theme="@style/splash_h_slide" />
+
+    </application>
+
+</manifest>

app/src/main/java/cn/samuelnotes/multidexsample/LoadResActivity.java

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+package cn.samuelnotes.multidexsample;
+
+import android.app.Activity;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.multidex.MultiDex;
+import android.util.Log;
+import android.view.Window;
+import android.view.WindowManager;
+
+
+/**
+ * Created by samuelwang on  2016/1/7.
+ */
+public class LoadResActivity extends Activity {
+    private long loadoptStart;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        super.onCreate(savedInstanceState);
+        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        overridePendingTransition(R.anim.null_anim, R.anim.null_anim);
+        setContentView(R.layout.layout_load);
+
+        loadoptStart = System.currentTimeMillis();
+        Log.d("loadDex", "LoadResActivity  install  oncreate : " + loadoptStart);
+
+        new LoadDexTask().execute();
+    }
+
+    class LoadDexTask extends AsyncTask {
+        @Override
+        protected Object doInBackground(Object[] params) {
+            try {
+                MultiDex.install(getApplication());
+                Log.d("loadDex", "install finish");
+                ((MyApp) getApplication()).installFinish(getApplication());
+
+                Log.d("loadDex", "LoadResActivity  install  end used  : " + (System.currentTimeMillis() - loadoptStart) + "ms");
+
+            } catch (Exception e) {
+                Log.e("loadDex", e.getLocalizedMessage());
+
+            }
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(Object o) {
+            Log.d("loadDex", "get install finish");
+            finish();
+            System.exit(0);
+        }
+    }
+
+    @Override
+    public void onBackPressed() {
+        //cannot backpress
+    }
+}

app/src/main/java/cn/samuelnotes/multidexsample/MainActivity.java

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+package cn.samuelnotes.multidexsample;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+}