我正在使用 ACRA 报告应用程序崩溃。我收到 View not attach to window manager 错误消息，并认为我已通过将 pDialog.dismiss(); 包装在 if 语句中来修复它:

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

它减少了我收到的 View not attach to window manager 崩溃的数量，但我仍然遇到一些问题，我不知道如何解决。

错误信息:

java.lang.IllegalArgumentException: View not attached to window manager
at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:425)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:327)
at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:83)
at android.app.Dialog.dismissDialog(Dialog.java:330)
at android.app.Dialog.dismiss(Dialog.java:312)
at com.package.class$LoadAllProducts.onPostExecute(class.java:624)
at com.package.class$LoadAllProducts.onPostExecute(class.java:1)
at android.os.AsyncTask.finish(AsyncTask.java:631)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)

代码 fragment :

class LoadAllProducts extends AsyncTask<String, String, String> 
{

    /**
     * Before starting background thread Show Progress Dialog
     * */
    @Override
    protected void onPreExecute() 
    {
        super.onPreExecute();
        pDialog = new ProgressDialog(CLASS.this);
        pDialog.setMessage("Loading. Please wait...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(false);
        pDialog.show();
    }

    /**
     * getting All products from url
     * */
    protected String doInBackground(String... args) 
    {
        // Building Parameters
        doMoreStuff("internet");
        return null;
    }


    /**
     * After completing background task Dismiss the progress dialog
     * **/
    protected void onPostExecute(String file_url) 
    {
         // dismiss the dialog after getting all products
         if (pDialog!=null) 
         {
                if (pDialog.isShowing()) 
                {
                    pDialog.dismiss();   //This is line 624!    
                }
         }
         something(note);
    }
}

list :

    <activity
        android:name="pagename.CLASS" 
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout"            
        android:label="@string/name" >
    </activity>

为了阻止这种崩溃的发生，我缺少什么？

最佳答案

如何重现错误:

1. 在您的设备上启用此选项:设置 -> 开发人员选项 -> 不要保留 Activity 。
2. 在 AsyncTask 正在执行并且 ProgressDialog 正在显示时按 Home 按钮。

一旦 Activity 被隐藏，Android 操作系统就会销毁它。当 onPostExecute 被调用时，Activity 将处于 "finishing" 状态，并且 ProgressDialog 不会被附加到 Activity 。

如何解决:

1. 在 onPostExecute 方法中检查 Activity 状态。
2. 关闭 onDestroy 方法中的 ProgressDialog。否则会抛出 android.view.WindowLeaked 异常。此异常通常来自 Activity 结束时仍处于 Activity 状态的对话框。

试试这个固定代码:

public class YourActivity extends Activity {

    private void showProgressDialog() {
        if (pDialog == null) {
            pDialog = new ProgressDialog(StartActivity.this);
            pDialog.setMessage("Loading. Please wait...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(false);
        }
        pDialog.show();
    }

    private void dismissProgressDialog() {
        if (pDialog != null && pDialog.isShowing()) {
            pDialog.dismiss();
        }
    }

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

    class LoadAllProducts extends AsyncTask<String, String, String> {

        // Before starting background thread Show Progress Dialog
        @Override
        protected void onPreExecute() {
            showProgressDialog();
        }

        //getting All products from url
        protected String doInBackground(String... args) {
            doMoreStuff("internet");
            return null;
        }

        // After completing background task Dismiss the progress dialog
        protected void onPostExecute(String file_url) {
            if (YourActivity.this.isDestroyed()) { // or call isFinishing() if min sdk version < 17
                return;
            }
            dismissProgressDialog();
            something(note);
        }
    }
}

关于android - View 未附加到窗口管理器崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22924825/