相关疑难解决方法(0)

我正在尝试打开一个对话框窗口,但每次我尝试打开它都会抛出此异常:

Uncaught handler: thread main exiting due to uncaught exception
android.view.WindowManager$BadTokenException: 
     Unable to add window -- token null is not for an application
  at android.view.ViewRoot.setView(ViewRoot.java:460)
  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
  at android.app.Dialog.show(Dialog.java:238)
  at android.app.Activity.showDialog(Activity.java:2413)

我是通过showDialog显示器的id 调用来创建的.该onCreateDialog处理器记录良好,我可以通过它没有问题的一步,但因为它看起来像我想的东西我已经把它贴吧:

@Override
public Dialog onCreateDialog(int id)
{
    Dialog dialog;
    Context appContext = this.getApplicationContext();
    switch(id)
    {
        case RENAME_DIALOG_ID:
            Log.i("Edit", "Creating rename dialog...");
            dialog = new Dialog(appContext);
            dialog.setContentView(R.layout.rename);
            dialog.setTitle("Rename " + noteName);
            break;
        default:
            dialog = null;
            break;
    }
    return dialog;      
}

这有什么不足之处吗？有些问题在创建对话框时已经讨论过这个问题onCreate …

在我的Android应用程序中,我必须在按钮单击事件上弹出一个对话框.但是,当我点击按钮时,应用程序停止工作.我将预先设计的布局加载到对话框中.我将发布一个代码段.

Button login = (Button) findViewById(R.id.btn_login);

    login.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            final Dialog dialog = new Dialog(getApplication());

            dialog.setContentView(R.layout.journey_details);
            dialog.setTitle("Android Custom Dialog Box");

            Button dialogButton = (Button) dialog.findViewById(R.id.btn_start_jrny);

            dialogButton.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    dialog.dismiss();
                }
            });

            dialog.show();

        }
    });

它在Log cat中显示以下错误.

     E/AndroidRuntime(1412): FATAL EXCEPTION: main
 E/AndroidRuntime(1412): Process: com.xont.geotracker, PID: 1412
 E/AndroidRuntime(1412): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not …