活动泄露了最初添加的窗口

  if (mActivity != null && !mActivity.isFinishing() && mProgressDialog != null && mProgressDialog.isShowing()) {
        mProgressDialog.dismiss();
    }

我有另一种解决方案，想知道您是否认为它有效：不要像主流解决方案那样在onDestroy中取消，而是扩展ProgressDialog...

public class MyProgressDialog extends ProgressDialog {

  private boolean isDismissed;

  public MyProgressDialog(Context context) {
    super(context);
  }

  @Override
  public void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    dismiss();
  }

  @Override
  public void dismiss() {
    if (isDismissed) {
      return;
    }
    try {
      super.dismiss();
    } catch (IllegalArgumentException e) {
      // ignore
    }
    isDismissed = true;
  }

我个人认为这种方式更好，因为您不需要将进度对话框作为成员变量保存，只需触发(show)并忘记即可。

在活动被销毁之前，取消进度条。

@Override
    protected void onDestroy() {
        try {
            if (progressDialog != null)
                progressDialog.dismiss();
        } catch (Exception e) {
            e.printStackTrace();
        }
        super.onDestroy();
    }

当我运行猴子测试时，我也遇到了WindowLeaked问题。以下是logcat。

android.support.v7.app.AppCompatDelegateImplV7$ListMenuDecorView@4334fd40 that was originally added here
android.view.WindowLeaked: Activity com.myapp.MyActivity has leaked window android.support.v7.app.AppCompatDelegateImplV7$ListMenuDecorView@4334fd40 that was originally added here
            at android.view.ViewRootImpl.<init>(ViewRootImpl.java:409)
            at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:312)
            at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:224)
            at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:149)
            at android.view.Window$LocalWindowManager.addView(Window.java:554)
            at android.support.v7.app.AppCompatDelegateImplV7.openPanel(AppCompatDelegateImplV7.java:1150)
            at android.support.v7.app.AppCompatDelegateImplV7.onKeyUpPanel(AppCompatDelegateImplV7.java:1469)
            at android.support.v7.app.AppCompatDelegateImplV7.onKeyUp(AppCompatDelegateImplV7.java:919)
            at android.support.v7.app.AppCompatDelegateImplV7.dispatchKeyEvent(AppCompatDelegateImplV7.java:913)
            at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.dispatchKeyEvent(AppCompatDelegateImplBase.java:241)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2009)
            at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3929)
            at android.view.ViewRootImpl.deliverKeyEvent(ViewRootImpl.java:3863)
            at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3420)
            at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4528)
            at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4506)
            at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4610)
            at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171)
            at android.os.MessageQueue.nativePollOnce(Native Method)
            at android.os.MessageQueue.next(MessageQueue.java:125)
            at android.os.Looper.loop(Looper.java:124)
            at android.app.ActivityThread.main(ActivityThread.java:4898)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
            at dalvik.system.NativeStart.main(Native Method)

我的Activity是AppCompatActivity。我在Activity中使用以下代码解决了这个问题。

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    // added by sunhang : intercept menu key to resove a WindowLeaked error in monkey-test.
    if (event.getKeyCode() == KeyEvent.KEYCODE_MENU) {
        return true;
    }
    return super.dispatchKeyEvent(event);
}

runOnUiThread(new Runnable(){
      @Override
      public void run() {
       ...        
      }
    });  

请确保您的活动不会由于代码中某处引发的异常而意外关闭。通常在异步任务中发生，当活动在doinBackground方法中面临强制关闭时，然后asynctask返回到onPostexecute方法。

try {
     viewModelScope.launch(Dispatchers.IO) {
     ....
     }
} catch (e: Exception) {
     Log.e("Exception: ", e.message.toString())
}

除了隐藏对话框，还可以将其关闭。

用 .dismiss() 替换 .hide()

 Handler handler=new Handler();
     handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                     dialog.show();
                     //or
                     dialog.dismiss();

                }
            },100);

 private ActionMode actionMode;

 @Override
 public void onActionModeStarted(ActionMode mode) {
    super.onActionModeStarted(mode);
    actionMode = mode;
 }

 @Override
 protected void onPause() {
    super.onPause();
    if (actionMode != null) actionMode.finish();
 }