活动泄漏了最初添加的窗口

这个错误是什么，为什么会发生?

05-17 18:24:57.069: ERROR/WindowManager(18850): Activity com.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here
05-17 18:24:57.069: ERROR/WindowManager(18850): android.view.WindowLeaked: Activity ccom.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.ViewRoot.<init>(ViewRoot.java:231)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.Window$LocalWindowManager.addView(Window.java:424)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.Dialog.show(Dialog.java:239)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.mypkg.myP$PreparePairingLinkageData.onPreExecute(viewP.java:183)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.AsyncTask.execute(AsyncTask.java:391)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.mypkg.myP.onCreate(viewP.java:94)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2544)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.access$2200(ActivityThread.java:126)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.Looper.loop(Looper.java:123)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.main(ActivityThread.java:4595)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at java.lang.reflect.Method.invokeNative(Native Method)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at java.lang.reflect.Method.invoke(Method.java:521)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at dalvik.system.NativeStart.main(Native Method)

当前回答

尝试下面的代码，它将在任何时候工作，你将解散进度对话框，它将看到它的实例是否可用。

try {
        if (null != progressDialog && progressDialog.isShowing()) {
            progressDialog.dismiss();
            progressDialog = null;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

2014-02-14 06:16:16

其他回答

确保打电话 this.dialog.show。(活动)

2018-11-26 10:23:28

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

2016-06-27 14:17:13

比之前的答案晚得多，在2022年人们使用Kotlin时，当Kotlin协程试图从错误的(非main)协程上下文修改弹出窗口时，我们也得到了错误。

产生错误:

CoroutineScope(Dispatchers.IO).launch{
    someCodeThatNeedsOtherContext()
    someViewBinding.someAttribute = someValue // We get the error here
}

不产生错误:

CoroutineScope(Dispatchers.IO).launch{
    someCodeThatNeedsOtherContext()
    CoroutineScope(Dispatchers.Main).launch{
        someViewBinding.someAttribute = someValue // No error here
    }
}

2022-10-04 06:47:10

这里有一个解决方案，当你想要解散AlertDialog，但不想在活动中保留对它的引用。

解决方案要求您拥有androidx。项目中的生命周期依赖关系(我相信在评论的时候，这是一个常见的需求)

这让你可以将对话框的解散委托给外部对象(观察者)，你不需要再关心它了，因为当活动终止时它会自动取消订阅。(这里是证明:https://github.com/googlecodelabs/android-lifecycles/issues/5)。

因此，观察者保持对对话的引用，而活动保持对观察者的引用。当“onPause”发生时-观察者解散对话框，当“onDestroy”发生时-活动删除观察者，所以没有泄漏发生(好吧，至少我不会在logcat中看到错误)

// observer
class DialogDismissLifecycleObserver( private var dialog: AlertDialog? ) : LifecycleObserver {
    @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
    fun onPause() {
        dialog?.dismiss()
        dialog = null
    }
}
// activity code
private fun showDialog() {
        if( isDestroyed || isFinishing ) return
        val dialog = AlertDialog
            .Builder(this, R.style.DialogTheme)
            // dialog setup skipped
            .create()
        lifecycle.addObserver( DialogDismissLifecycleObserver( dialog ) )
        dialog.show()
}

2019-10-29 14:09:41

这不是问题的答案，但与主题相关。

如果活动在清单中定义了属性

 android:noHistory="true"

然后在执行onPause()后，活动的上下文将丢失。所有使用这个context的视图都会给出这个错误。

2016-05-09 14:25:52

活动泄漏了最初添加的窗口

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