Jakub Pomykała Jakub Pomykała - 6 months ago 63
Android Question

View not attached to window manager, dialog dismiss

So I've activity called

GameActivity.java
and in this activity I call
DialogAnswer.show()
which simple shows some picture on screen.

java.lang.IllegalArgumentException: View not attached to window manager
at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:402)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:304)
at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:79)
at android.app.Dialog.dismissDialog(Dialog.java:325)
at android.app.Dialog.dismiss(Dialog.java:307)
at pl.evelanblog.prawdaczyfalsz.screen.DialogAnswer$1.onFinish(DialogAnswer.java:36)
at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:118)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5328)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)


This is my
DialogAnswer.java
class

public class DialogAnswer extends Activity {

private static ImageView resultImage;
private static Dialog dialog = null;

public static void show(Context context, boolean fCorrect) {

dialog = new Dialog(context, android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);
dialog.setContentView(R.layout.dialog);
resultImage = (ImageView) dialog.findViewById(R.id.result_image);

if (fCorrect)
resultImage.setImageResource(R.drawable.correct_image);
else
resultImage.setImageResource(R.drawable.incorrect_image);

dialog.show();

new CountDownTimer(700, 100) {
public void onTick(long millisUntilFinished) {
}
public void onFinish() {
dialog.dismiss(); //this is line 36
}
}.start();
}
}


When the
GameActivity.java
sometimes when I going to another activity im getting error like this on top of my post. I dont know how to solve this, its hard to debug because its rare error but it exists.

Answer

Use a try statement.

new CountDownTimer(700, 100) {
        public void onTick(long millisUntilFinished) {
        }
        public void onFinish() {
           try {
               dialog.dismiss();
               dialog = null;
          } catch (Exception e) {
               //TODO: Fill in exception
          }
        }
    }.start();
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