解决华为手机InputMethodManager和GestureBoostManager的内存泄露的问题

这里写代码片最近公司适配华为p9手机,系统是7.0出现了两个内存泄露的问题
解决办法,在activity的ondestory中加入两个方法即可

 public void fixHuaWeiMemoryLeak() {if (!"HUAWEI".equals(Build.MANUFACTURER)) {return;}try {Class<?> GestureBoostManagerClass = Class.forName("android.gestureboost.GestureBoostManager");Field sGestureBoostManagerField = GestureBoostManagerClass.getDeclaredField("sGestureBoostManager");sGestureBoostManagerField.setAccessible(true);Object gestureBoostManager = sGestureBoostManagerField.get(GestureBoostManagerClass);Field contextField = GestureBoostManagerClass.getDeclaredField("mContext");contextField.setAccessible(true);if (contextField.get(gestureBoostManager) != null) {contextField.set(gestureBoostManager, null);}} catch (Throwable t) {}}@RequiresApi(api = Build.VERSION_CODES.KITKAT)public  void fixFocusedViewLeak(Application application) {// Don't know about other versions yet.if (Build.VERSION.SDK_INT > 23) {return;}final InputMethodManager inputMethodManager =(InputMethodManager) application.getSystemService(Context.INPUT_METHOD_SERVICE);final Field mServedViewField;final Field mHField;final Method finishInputLockedMethod;final Method focusInMethod;try {mServedViewField = InputMethodManager.class.getDeclaredField("mServedView");mServedViewField.setAccessible(true);mHField = InputMethodManager.class.getDeclaredField("mServedView");mHField.setAccessible(true);finishInputLockedMethod = InputMethodManager.class.getDeclaredMethod("finishInputLocked");finishInputLockedMethod.setAccessible(true);focusInMethod = InputMethodManager.class.getDeclaredMethod("focusIn", View.class);focusInMethod.setAccessible(true);} catch (NoSuchMethodException | NoSuchFieldException unexpected) {Log.e("IMMLeaks", "Unexpected reflection exception", unexpected);return;}application.registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {@Overridepublic void onActivityDestroyed(Activity activity){}@Overridepublic void onActivityStarted(Activity activity){}@Overridepublic void onActivityResumed(Activity activity){}@Overridepublic void onActivityPaused(Activity activity){}@Overridepublic void onActivityStopped(Activity activity){}@Overridepublic void onActivitySaveInstanceState(Activity activity, Bundle bundle){}@Override public void onActivityCreated(Activity activity, Bundle savedInstanceState) {ReferenceCleaner cleaner = new ReferenceCleaner(inputMethodManager, mHField, mServedViewField,finishInputLockedMethod);View rootView = activity.getWindow().getDecorView().getRootView();ViewTreeObserver viewTreeObserver = rootView.getViewTreeObserver();viewTreeObserver.addOnGlobalFocusChangeListener(cleaner);}});}static class ReferenceCleaner implements MessageQueue.IdleHandler, View.OnAttachStateChangeListener,ViewTreeObserver.OnGlobalFocusChangeListener {private final InputMethodManager inputMethodManager;private final Field mHField;private final Field mServedViewField;private final Method finishInputLockedMethod;ReferenceCleaner(InputMethodManager inputMethodManager, Field mHField, Field mServedViewField,Method finishInputLockedMethod) {this.inputMethodManager = inputMethodManager;this.mHField = mHField;this.mServedViewField = mServedViewField;this.finishInputLockedMethod = finishInputLockedMethod;}@Override public void onGlobalFocusChanged(View oldFocus, View newFocus) {if (newFocus == null) {return;}if (oldFocus != null) {oldFocus.removeOnAttachStateChangeListener(this);}Looper.myQueue().removeIdleHandler(this);newFocus.addOnAttachStateChangeListener(this);}@Override public void onViewAttachedToWindow(View v) {}@Override public void onViewDetachedFromWindow(View v) {v.removeOnAttachStateChangeListener(this);Looper.myQueue().removeIdleHandler(this);Looper.myQueue().addIdleHandler(this);}@Override public boolean queueIdle() {clearInputMethodManagerLeak();return false;}@RequiresApi(api = Build.VERSION_CODES.KITKAT)private void clearInputMethodManagerLeak() {try {Object lock = mHField.get(inputMethodManager);// This is highly dependent on the InputMethodManager implementation.synchronized (lock) {View servedView = (View) mServedViewField.get(inputMethodManager);if (servedView != null) {boolean servedViewAttached = servedView.getWindowVisibility() != View.GONE;if (servedViewAttached) {// The view held by the IMM was replaced without a global focus change. Let's make// sure we get notified when that view detaches.// Avoid double registration.servedView.removeOnAttachStateChangeListener(this);servedView.addOnAttachStateChangeListener(this);} else {// servedView is not attached. InputMethodManager is being stupid!Activity activity = extractActivity(servedView.getContext());if (activity == null || activity.getWindow() == null) {// Unlikely case. Let's finish the input anyways.finishInputLockedMethod.invoke(inputMethodManager);} else {View decorView = activity.getWindow().peekDecorView();boolean windowAttached = decorView.getWindowVisibility() != View.GONE;if (!windowAttached) {finishInputLockedMethod.invoke(inputMethodManager);} else {decorView.requestFocusFromTouch();}}}}}} catch (IllegalAccessException |InvocationTargetException unexpected) {Log.e("IMMLeaks", "Unexpected reflection exception", unexpected);}}private Activity extractActivity(Context context) {while (true) {if (context instanceof Application) {return null;} else if (context instanceof Activity) {return (Activity) context;} else if (context instanceof ContextWrapper) {Context baseContext = ((ContextWrapper) context).getBaseContext();// Prevent Stack Overflow.if (baseContext == context) {return null;}context = baseContext;} else {return null;}}}}

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解决华为手机InputMethodManager和GestureBoostManager的内存泄露的问题

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