Android二個按鈕Dialog對話框

1、res-layout-main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/button1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="確定取消按鈕框" />

</LinearLayout>

2、MainActivity.java

導入包：

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

MainActivity類實現：

public class MainActivity extends Activity {
	private Button btn1;

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

		btn1 = (Button) findViewById(R.id.button1);
		btn1.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {

				AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
				
				builder.setIcon(R.drawable.ic_launcher);
				builder.setTitle("你確定要離開嗎？");
				builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO Auto-generated method stub
						onShowDialog("你選擇了確定");
					}
		
				});
				builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO Auto-generated method stub
						onShowDialog("你選擇了取消");
					}
				});
				
				builder.create().show();
			}
			
			private void onShowDialog(String str) {
				new AlertDialog.Builder(MainActivity.this)
				.setMessage(str)
				.show();
			}
		});
	}
}