探秘腾讯Android手机游戏平台之不安装游戏APK直接启动法

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@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

Button btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Bundle paramBundle = new Bundle();
paramBundle.putBoolean("KEY_START_FROM_OTHER_ACTIVITY", true);
String dexpath = "/mnt/sdcard/TestB.apk";
String dexoutputpath = "/mnt/sdcard/";
LoadAPK(paramBundle, dexpath, dexoutputpath);
}
});
}

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public void LoadAPK(Bundle paramBundle, String dexpath, String dexoutputpath) {
ClassLoader localClassLoader = ClassLoader.getSystemClassLoader();
DexClassLoader localDexClassLoader = new DexClassLoader(dexpath,
dexoutputpath, null, localClassLoader);
try {
PackageInfo plocalObject = getPackageManager()
.getPackageArchiveInfo(dexpath, 1);

if ((plocalObject.activities != null)
&& (plocalObject.activities.length > 0)) {
String activityname = plocalObject.activities[0].name;
Log.d(TAG, "activityname = " + activityname);

Class localClass = localDexClassLoader.loadClass(activityname);
Constructor localConstructor = localClass
.getConstructor(new Class[] {});
Object instance = localConstructor.newInstance(new Object[] {});
Log.d(TAG, "instance = " + instance);

Method localMethodSetActivity = localClass.getDeclaredMethod(
"setActivity", new Class[] { Activity.class });
localMethodSetActivity.setAccessible(true);
localMethodSetActivity.invoke(instance, new Object[] { this });

Method methodonCreate = localClass.getDeclaredMethod(
"onCreate", new Class[] { Bundle.class });
methodonCreate.setAccessible(true);
methodonCreate.invoke(instance, new Object[] { paramBundle });
}
return;
} catch (Exception ex) {
ex.printStackTrace();
}
}

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public class TestBActivity extends Activity {
private static final String TAG = "TestBActivity";
private Activity otherActivity;

@Override
public void onCreate(Bundle savedInstanceState) {
boolean b = false;
if (savedInstanceState != null) {
b = savedInstanceState.getBoolean("KEY_START_FROM_OTHER_ACTIVITY", false);
if (b) {
this.otherActivity.setContentView(new TBSurfaceView(
this.otherActivity));
}
}
if (!b) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.main);
setContentView(new TBSurfaceView(this));
}
}

public void setActivity(Activity paramActivity) {
Log.d(TAG, "setActivity..." + paramActivity);
this.otherActivity = paramActivity;
}
}

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public class TBSurfaceView extends SurfaceView implements Callback, Runnable {
private SurfaceHolder sfh;
private Thread th;
private Canvas canvas;
private Paint paint;

public TBSurfaceView(Context context) {
super(context);
th = new Thread(this);
sfh = this.getHolder();
sfh.addCallback(this);
paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.RED);
this.setKeepScreenOn(true);
}

public void surfaceCreated(SurfaceHolder holder) {
th.start();
}

private void draw() {
try {
canvas = sfh.lockCanvas();
if (canvas != null) {
canvas.drawColor(Color.WHITE);
canvas.drawText("Time: " + System.currentTimeMillis(), 100,
100, paint);
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
if (canvas != null) {
sfh.unlockCanvasAndPost(canvas);
}
}
}

public void run() {
while (true) {
draw();
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}

public void surfaceDestroyed(SurfaceHolder holder) {
}
}