Android实现弹出列表、单选、多选框

<?  version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout  ns:android=\"http://schemas.android.com/apk/res/android\"
  ns:app=\"http://schemas.android.com/apk/res-auto\"
  ns: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: =\"showList\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"wrap_content\" />
 
 <Button
 android:id=\"@+id/button2\"
 android:text=\"单选列表\"
 android: =\"showSingleAlertDialog\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"wrap_content\" />
 
 <Button
 android:id=\"@+id/button3\"
 android:text=\"多选按钮\"
 android: =\"showMutilAlertDialog\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"wrap_content\" />
 
</LinearLayout>

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.set (\"这是列表框\");
 alertBuilder.setItems(items, new DialogInterface. Listener() {
  @Override
  public void  (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.set (\"这是单选框\");
 alertBuilder.setSingleChoiceItems(items, 0, new DialogInterface. Listener() {
  @Override
  public void  (DialogInterface dialogInterface, int i) {
  Toast.makeText(MainActivity.this, items[i], Toast.LENGTH_SHORT).show();
  }
 });
 
 alertBuilder.setPositiveButton(\"确定\", new DialogInterface. Listener() {
  @Override
  public void  (DialogInterface dialogInterface, int i) {
  alertDialog2.dismiss();
  }
 });
 
 alertBuilder.setNegativeButton(\"取消\", new DialogInterface. Listener() {
  @Override
  public void  (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.set (\"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  (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. Listener() {
  @Override
  public void  (DialogInterface dialogInterface, int i) {
  alertDialog3.dismiss();
  }
 });
 
 alertBuilder.setNegativeButton(\"取消\", new DialogInterface. Listener() {
  @Override
  public void  (DialogInterface dialogInterface, int i) {
  alertDialog3.dismiss();
  }
 });
 
 
 alertDialog3 = alertBuilder.create();
 alertDialog3.show();
 }
}