Android java.lang.IllegalArgumentException: View not attached to window manager 安卓java.lang.IllegalArgumentException：视图未附加到窗口管理器

Question

我在代码中遇到了以下异常...

IllegalArgumentException: View not attached to window manager
at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:355)
at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:200)
at android.view.Window$LocalWindowManager.removeView(Window.java:432)
at android.app.Dialog.dismissDialog(Dialog.java:280)
at android.app.Dialog.access$000(Dialog.java:73)
at android.app.Dialog$1.run(Dialog.java:113)
at android.app.Dialog.dismiss(Dialog.java:270)
at com.myapp.code.SearchWord$1.handleMessage(SearchWord.java:718)  <--
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3906)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:840)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:598)

我不太明白为什么会出现这个错误。它会导致设备强制关闭的问题。有什么办法可以修复吗？谢谢。

这是我的代码...

public class SearchWord extends Activity {
/** Called when the activity is first created. */

private ProgressDialog progressDialog;
        ...
    }

    public void callDialog(){

    this.progressDialog = ProgressDialog.show(SearchWord.this,null, "Loading. Please wait..", true);

    new Thread(new Runnable(){
        public void run(){
            try{
                Thread.sleep(9000);
            }
            catch (Exception e){
                e.printStackTrace();
            }
            if(copyFlag){

            }
                            else{
                getData();
            }
            SearchWord.this.handler.sendEmptyMessage(0);
        }

    }).start();
}

    Handler handler = new Handler(){
    public void handleMessage(Message msg){
        progressDialog.dismiss();           <-- line 718
        SetData();
    }
};

- dpark123

---

你写的代码很危险，如果在线程仍在运行时离开活动，则在线程完成并关闭对话框时会发生错误。 - dreamtale

@dreamtale，你能否详细说明一下，谢谢。 - dpark123

Answer 1

我已经修改了你的代码。请查看下面的片段。

public void callDialog(){

            ProgressDialog progressDialog = new ProgressDialog(this);
            progressDialog.setTitle("Loading. Please wait..");
            progressDialog.setCancelable(false);
            progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                progressDialog.show();

            new Thread(new Runnable(){
                public void run(){
                    try{
                        Thread.sleep(9000);
                    }
                    catch (Exception e){
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    if(copyFlag){
                    }else{
                        getData();
                    }
                    SearchWord.this.handler.sendEmptyMessage(0);
                }

            }).start();
        }
          // omitted

            Handler handler = new Handler(){
            @Override
            public void handleMessage(Message msg){
                progressDialog.dismiss();        
                SetData();
            }
        };

- Vipul

---

我不确定progressDialog.dismiss()这行代码是否与那部分相关。是"public void callDialog()"导致了"IllegalArgumentException: View not attached to window manager"错误吗？谢谢。 - dpark123

Answer 2

有时候我也会遇到这个错误，当我在onPostExecute方法中取消对话框并结束活动时。我猜有时候活动在对话框成功取消之前就被结束了。

尝试使用下面的代码，它会帮助你。

try{

pd.dismiss();
// Then assign progress Dialog to null
pd = null;

}
catch(Exception e)
{
   e.printStackTrace();
}

- Jitesh Dalsaniya