（亲测） 带有单选按钮和复选按钮 的dialog+详细代码+注释

带有单选按钮的dialog：

package example.com.myapplication;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.os.Bundle;import android.widget.Toast;public class MainActivity extends Activity {    //声明选中项变量    private int selectedCityIndex = 0;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //定义城市数组        final String[] arrayCity = new String[] { "杭州", "纽约", "威尼斯", "北海道" };        //实例化AlertDialog对话框        Dialog alertDialog = new AlertDialog.Builder(this)                .setTitle("你最喜欢哪个地方？")                        //设置标题                .setIcon(R.mipmap.ic_launcher)                //设置图标                //设置对话框显示一个单选List，指定默认选中项，同时设置监听事件处理                .setSingleChoiceItems(arrayCity, 0, new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        selectedCityIndex = which;               //选中项的索引保存到选中项变量                    }                })                //添加取消按钮并增加监听处理                .setNegativeButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        // TODO Auto-generated method stub                    }                })                //添加确定按钮并增加监听处理                .setPositiveButton("确认", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplication(), arrayCity[selectedCityIndex], Toast.LENGTH_SHORT).show();                    }                })                .create();        alertDialog.show();    }}

带有复选按钮的dialog代码：；

package example.com.myapplication;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.os.Bundle;import android.widget.Toast;public class MainActivity extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //定义运动数组        final String[] arraySport = new String[] { "足球", "篮球", "网球", "乒乓球" };        final boolean[] arraySportSelected = new boolean[] {false, false, false, false};        //实例化AlertDialog对话框        Dialog alertDialog = new AlertDialog.Builder(this)                .setTitle("你喜欢哪些运动？")                        //设置标题                .setIcon(R.mipmap.ic_launcher)               //设置图标                //设置对话框显示一个复选List，指定默认选中项，同时设置监听事件处理                .setMultiChoiceItems(arraySport, arraySportSelected,                         new DialogInterface.OnMultiChoiceClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {                        arraySportSelected[which] = isChecked;              //选中项的布尔真假保存到选中项变量                    }                })                //添加取消按钮并增加监听处理                .setPositiveButton("确认", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        StringBuilder stringBuilder = new StringBuilder();                        for (int i = 0; i < arraySportSelected.length; i++) {                            if (arraySportSelected[i] == true){                                stringBuilder.append(arraySport[i] + "、");                            }                        }                        Toast.makeText(getApplication(), stringBuilder.toString(), Toast.LENGTH_SHORT).show();                    }                })                //添加确定按钮并增加监听处理                .setNegativeButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        // TODO Auto-generated method stub                    }                })                .create();        alertDialog.show();    }}