android 列表框
16lz
2021-01-23
1、activity_main.xml
2、ActivityMain.class类
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;import android.widget.Toast;
类的实现
public class MainActivity extends Activity {private Button btn1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);final String[] nItems = {"item1","item2","item3", "item4", "item5", "item6"};btn1 = (Button) findViewById(R.id.button1);btn1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("列表选择框");builder.setItems(nItems, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stub//显示提示信息Toast toast = Toast.makeText(getApplicationContext(), "你选择的Id为"+arg1+",值为"+nItems[arg1], Toast.LENGTH_SHORT);toast.show();}});builder.create().show();}});}}
3、运行图
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