Android(安卓)中 AlertDialog 的多种创建方式(二)

警告和多选对话框的创建

运行结果图如下

代码如下

public class MainActivity extends Activity {private Button btn1;private Button btn2;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);btn1 = (Button) findViewById(R.id.btn1);btn2 = (Button) findViewById(R.id.btn2);btn1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new AlertDialog.Builder(MainActivity.this)       //引用了系统自带的图片资源.setIcon(android.R.drawable.stat_sys_warning).setTitle("警告").setMessage("你确定要退出吗").setPositiveButton("确定",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {finish();}}).setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {Toast.makeText(MainActivity.this,"你取消了退出", Toast.LENGTH_LONG).show();}}).show();}});btn2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new AlertDialog.Builder(MainActivity.this).setTitle("多选对话框")//三个参数为：  数组资源Id， 默认选择的状态， 监听器.setMultiChoiceItems(new String[] { "星期一", "星期二", "星期三", "星期四","星期五", "星期六", "星期日" },null,new DialogInterface.OnMultiChoiceClickListener() {public void onClick(DialogInterface dialog,int which, boolean isChecked) {Toast.makeText(MainActivity.this,"你选择了第" + which + "个",Toast.LENGTH_LONG).show();}}).show();}});}}

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