IllegalArgumentException in ProgressDialog.dismiss

Question

我收到了坠机报告：

java.lang.IllegalArgumentException: View not attached to window manager
at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:395)
at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:239)
at android.view.Window$LocalWindowManager.removeView(Window.java:441)
at android.app.Dialog.dismissDialog(Dialog.java:306)
at android.app.Dialog.access$000(Dialog.java:89)
at android.app.Dialog$1.run(Dialog.java:132)
at android.app.Dialog.dismiss(Dialog.java:296)
at ZhuangDictActivity$1.onPageFinished(ZhuangDictActivity.java:311)
at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:299)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:4385)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
at dalvik.system.NativeStart.main(Native Method)

ZhuangDictActivity中的第311行是下面的searchProgressDialog.dismiss()：

public void onPageFinished(WebView view, String url) {
                    searchProgressDialog.dismiss();
                    onConfigurationChanged(ZhuangDictActivity.this.getResources().getConfiguration());
                    super.onPageFinished(view, url);
                }

这是ProgressDialog.show：

public void onPageStarted(WebView view, String url,
                        Bitmap favicon) {
                    searchProgressDialog.setMessage("Loading");
                    searchProgressDialog.show();
                    super.onPageStarted(view, url, favicon);
                }

在WebView完成加载之前更改方向时，就会发生崩溃。

Answer 1

你只是简单的解雇，而不是检查它是否显示。你得先检查一下：

if (searchProgressDialog != null && searchProgressDialog.isShowing()) {
    searchProgressDialog.dismiss();
}

Answer 2

请重写onDestroy方法。

@Override
protected void onDestroy() {
    super.onDestroy();

    if((progressDialog != null) && progressDialog.isShowing() ){
        progressDialog.dismiss();
    }
}

Answer 3

这是因为你试图展示进步对话，但在那一刻，你的活动似乎正在破坏……