请参阅我已经更新了帖子

我可以设置成变量像Web开发会话环境。

下面是我的code，其中我正在开发一个确认框，只要android应用上手

Here is my code to in which I am developing an confirmation box as soon as the android application get started

package com.example.alertboxandloadingwidgets;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Boolean result = showConfirmationBox("Are you sure you want to do this",
        this);
    }
    public Boolean showConfirmationBox(String messageToShow, final Context context) {
        // prepare the alert box
        AlertDialog.Builder alertbox = new AlertDialog.Builder(context);
        // set the message to display
        alertbox.setMessage(messageToShow);
        // set a positive/yes button and create a listener
        alertbox.setPositiveButton("Yes",
        new DialogInterface.OnClickListener() {
            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {
                Toast.makeText(context,
                    "'Yes' button clicked", Toast.LENGTH_SHORT)
                    .show();
            }
        });
        // set a negative/no button and create a listener
        alertbox.setNegativeButton("No", new DialogInterface.OnClickListener() {
            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {
                Toast.makeText(context, "'No' button clicked",
                Toast.LENGTH_SHORT).show();
            }
        });
        // display box
        alertbox.show();
    }
}

但我想，如果点击了是按钮，那么它必须返回真正，如果没有按钮被点击，然后它返回假。

But I want that if the yes button is clicked then it has to return true and if no button is clicked then it has to return false.

但我不能这样做，因为返回类型 onClickListener 是无效的。

But I am not able to do so because return type of onClickListener is void.

请帮我我能为这个做的。

Please help me what can I do for this.

但问题是，我有让通用方法这个方法我有一个CommonUtilities类写出从何处的任何活动都可以使用这种方法。所以，我必须设置或重置价值从那里我调用此方法的结果参数。的

But the problem is that I have make it generic means This method I have to write in a CommonUtilities Class From where any of the activity can use this method. So I have to set or reset the value the result parameter from where I am calling this method.

推荐答案

Android的对话框是异步的，因此，你需要重构你的code来处理这个问题。我猜你是打算做这样的事情：

Android dialogs are asynchronous, therefore you need to refactor your code to deal with this. I'm guessing you were planning to do something like this:

boolean result = showConfirmation(...);
if(result) {
    //do something
}
else {
    //do something else
}

您可以实现像这样同样的结果：

You can achieve the same result with something like this:

public class MainActivity extends Activity {
    private boolean result;

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

        showConfirmationBox("Are you sure you want to do this", this);
    }

    private doOnTrueResult() {
        result = true;
        //do something
    }

    private doOnFalseResult() {
        result = false;
        //do something else
    }

    public void showConfirmationBox(String messageToShow, final Context context) {

        // prepare the alert box
        AlertDialog.Builder alertbox = new AlertDialog.Builder(context);

        // set the message to display
        alertbox.setMessage(messageToShow);

        // set a positive/yes button and create a listener
        alertbox.setPositiveButton("Yes",
        new DialogInterface.OnClickListener() {

            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {
                Toast.makeText(context,
                    "'Yes' button clicked", Toast.LENGTH_SHORT)
                    .show();
                doOnTrueResult();
            }
        });

        // set a negative/no button and create a listener
        alertbox.setNegativeButton("No", new DialogInterface.OnClickListener() {

            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {
                Toast.makeText(context, "'No' button clicked",
                Toast.LENGTH_SHORT).show();
                doOnFalseResult();
            }
        });

        // display box
        alertbox.show();
    }
}