Android——弹出列表、单选、多选框

转自：https://blog.csdn.net/u012246458/article/details/82835085

效果图如下：

    

xml布局如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.lyp1020k.lv.MainActivity"
    android:orientation="vertical">
 
    <Button
        android:id="@+id/button1"
        android:text="列表框"
        android:onClick="showList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
    <Button
        android:id="@+id/button2"
        android:text="单选列表"
        android:onClick="showSingleAlertDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
    <Button
        android:id="@+id/button3"
        android:text="多选按钮"
        android:onClick="showMutilAlertDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
</LinearLayout>

 Java代码如下：

import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class MainActivity extends AppCompatActivity {
 
    private AlertDialog alertDialog1; //信息框
    private AlertDialog alertDialog2; //单选框
    private AlertDialog alertDialog3; //多选框
 
    private Button button1;
    private Button button2;
    private Button button3;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
    }
 
    public void init(){
        button1 = (Button) findViewById(R.id.button1);
        button2 = (Button) findViewById(R.id.button2);
        button3 = (Button) findViewById(R.id.button3);
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.mian, menu);
        return true;
    }
 
    public void showList(View view){
        final String[] items = {"列表1", "列表2", "列表3", "列表4"};
        AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
        alertBuilder.setTitle("这是列表框");
        alertBuilder.setItems(items, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(MainActivity.this, items[i], Toast.LENGTH_SHORT).show();
                alertDialog1.dismiss();
            }
        });
        alertDialog1 = alertBuilder.create();
        alertDialog1.show();
    }
 
    public void showSingleAlertDialog(View view){
        final String[] items = {"单选1", "单选2", "单选3", "单选4"};
        AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
        alertBuilder.setTitle("这是单选框");
        alertBuilder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(MainActivity.this, items[i], Toast.LENGTH_SHORT).show();
            }
        });
 
        alertBuilder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                alertDialog2.dismiss();
            }
        });
 
        alertBuilder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                alertDialog2.dismiss();
            }
        });
 
        alertDialog2 = alertBuilder.create();
        alertDialog2.show();
    }
 
    public void showMutilAlertDialog(View view){
        final String[] items = {"多选1", "多选2", "多选3", "多选4"};
        AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
        alertBuilder.setTitle("这是多选框");
        /**
         *第一个参数:弹出框的消息集合，一般为字符串集合
         * 第二个参数：默认被选中的，布尔类数组
         * 第三个参数：勾选事件监听
         */
        alertBuilder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i, boolean isChecked) {
                if (isChecked){
                    Toast.makeText(MainActivity.this, "选择" + items[i], Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(MainActivity.this, "取消选择" + items[i], Toast.LENGTH_SHORT).show();
                }
            }
        });
        alertBuilder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                alertDialog3.dismiss();
            }
        });
 
        alertBuilder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                alertDialog3.dismiss();
            }
        });
 
 
        alertDialog3 = alertBuilder.create();
        alertDialog3.show();
    }
}