再次显示相同的AlertDialog [英] Showing the same AlertDialog again

问题描述

我正在测试AlertDialog的行为以集成到更大的组件中.我无法再次显示相同的对话框.这是测试代码:

I was testing the behavior of AlertDialog to integrate in a bigger component. I am unable to show the same dialog again. Here is the test code:

public class MainActivity extends AppCompatActivity {

    private AlertDialog alertDialogACCreationRetry;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        alertDialogACCreationRetry = new AlertDialog.Builder(this)
                .setTitle("Account creation failed")
                .setMessage("There was a problem connecting to the Network. Check your connection.")
                .setPositiveButton("Retry", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                    }
                }).create();
        alertDialogACCreationRetry.show();

        alertDialogACCreationRetry.show();
    }
}

我尝试将alertDialogACCreationRetry.show();放在重试"按钮内，但它仍然不会显示.我也尝试过将alertDialogACCreationRetry.dismiss();放在重试"按钮内，然后在外部调用alertDialogACCreationRetry.show();，它仍然没有显示.更令人恐惧的是，如果不应该允许的话，它不会给我重新显示它的异常.

I have tried putting the alertDialogACCreationRetry.show(); inside the Retry button but it still won't show. I have also tried putting alertDialogACCreationRetry.dismiss(); inside the Retry button and then calling alertDialogACCreationRetry.show(); outside, it still doesn't show. More so it is frightening that it doesn't give me an exception on reshowing it if that is not supposed to be allowed.

所以，我的问题是:一旦按下按钮(自动)将其关闭后，我是否每次都要创建一个新对话框?

推荐答案

public void showAlertDialog() {
    final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
    builder.setTitle("Time");
    builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int i) {
            dialog.cancel();
            // call function show alert dialog again
            showAlertDialog();
        }
    });
    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });
    final AlertDialog alert = builder.create();
    alert.show();
}

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