【发布时间】：2015-03-17 19:01:15
【问题描述】：
当用户需要在应用程序范围内收到问题警报时，我正在使用系统覆盖来显示通知图标。当活动被破坏时，我得到一个泄漏的窗口，尽管我正在删除视图。
代码位于应用程序中大多数其他活动扩展的基本活动中。
protected void createOverlay(){
if (overlayCreated) return;
// Create System overlay video
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FILL_PARENT, 150,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.BOTTOM;
LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
mOverlay = (LinearLayout) inflater.inflate(R.layout.overlay_notification, null);
mOverlayImageView = (ImageView) mOverlay.findViewById(R.id.overlay_notification_image);
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mOverlay, params);
final Context context = this;
mOverlay.setOnTouchListener(new View.OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(context, "WootHa!", Toast.LENGTH_SHORT).show();
return true;
}
});
}
销毁
@Override
public void onDestroy() {
super.onDestroy();
// Remove view from WindowManager
if (mOverlay != null) {
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.removeView(mOverlay);
mOverlay = null;
mOverlayImageView = null;
}
}
错误：
26576-26576/com.letstruck.mygauges E/WindowManager﹕ android.view.WindowLeaked: Activity com.letstruck.mygauges.ui.activity.fuel.TruckListActivity has leaked window android.widget.LinearLayout{431c4220 V.E..... ......I. 0,0-1080,150} that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:457)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:267)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
at com.letstruck.mygauges.ui.activity.LoggedInActivity.createOverlay(LoggedInActivity.java:125)
at com.letstruck.mygauges.ui.activity.LoggedInActivity.onOptionsItemSelectedMain(LoggedInActivity.java:186)
at com.letstruck.mygauges.ui.activity.fuel.TruckListActivity.onOptionsItemSelected(TruckListActivity.java:100)
at android.app.Activity.onMenuItemSelected(Activity.java:2687)
at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:373)
at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1103)
at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
at com.android.internal.view.menu.ListMenuPresenter.onItemClick(ListMenuPresenter.java:177)
at android.widget.AdapterView.performItemClick(AdapterView.java:308)
at android.widget.AbsListView.performItemClick(AbsListView.java:1483)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:3485)
at android.widget.AbsListView$3.run(AbsListView.java:4843)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)
【问题讨论】：
-
onDestroy不能保证被调用，你应该删除onPause中的窗口 -
添加到 onPause()，仍然泄露。我已经对其进行了调试以验证是否正在调用代码。我的释放方法有问题吗？
-
贴出完整代码
-
这就是overlay的全部代码，需要的时候还会有其他代码调用createOverlay()方法。现在我只是把它绑定到一个菜单操作。
标签： android memory-leaks