Question

我试图显示一个对话框，在成功注销时通知用户。当前对话框仅在处理onOptionsItemSelected方法后显示。我想在onOptionsItemSelected期间或之中运行对话框。

我已经用Google搜索并尝试了＃34;这个＆＃34;，＆＃34; MainActivity.this＆＃34;，＆＃34; break＆＃34;，＆＃34; return true＆＃34; 。仍然没有工作。请指教。

public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    switch (id) {
        case LOGOUT_ID: {
            //run some logout process 
            // ........................
            //show message
            AlertDialog.Builder dialog = new AlertDialog.Builder(this);
            dialog.setMessage("Successfully logged out");
            dialog.setPositiveButton("Ok", new   
            DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                 redirectToLoginPage();}
            });
            dialog.show();  
            break;
        }
        default:
            break;
    }
    return super.onOptionsItemSelected(item);
}

Answer 1

试试这个

public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    switch (id) {
     case LOGOUT_ID: 
        doLogOut();
         break;

      default:
        break;
    }

    return super.onOptionsItemSelected(item);
}




private void showAlertDialogLogOut() {

    AlertDialog.Builder dialog = new AlertDialog.Builder(this);
    dialog.setTitle("Logout");
    dialog.setMessage("Successfully loged out");
    dialog.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
           redirectToLoginPage()
        }
    });
    dialog.show();

}

private void doLogOut() {

    // Do your job and when finish show the dialog
    showAlertDialogLogOut();
}

onOptionsItemSelected dialog.show（）没有显示

1 个答案: