1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | package com.js.listdialogtest1; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class ListDialogTest1 extends Activity implements OnClickListener { private Button btnListDialog; private String[] provinces = new String[] { "上海" , "北京" , "湖南" , "湖北" , "海南" }; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); btnListDialog = (Button) findViewById(R.id.btnListDialog); btnListDialog.setOnClickListener( this ); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btnListDialog: showListDialog(); break ; } } private void showListDialog() { AlertDialog.Builder builder = new AlertDialog.Builder( this ); builder.setTitle( "请选择省份" ); /** * 1、public Builder setItems(int itemsId, final OnClickListener * listener) itemsId表示字符串数组的资源ID,该资源指定的数组会显示在列表中。 2、public Builder * setItems(CharSequence[] items, final OnClickListener listener) * items表示用于显示在列表中的字符串数组 */ builder.setItems(provinces, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { /* * ad变量用final关键字定义,因为在隐式实现的Runnable接口 的run()方法中 需要访问final变量。 */ final AlertDialog ad = new AlertDialog.Builder( ListDialogTest1. this ).setMessage( "你选择的是:" + which + ": " + provinces[which]).show(); Handler handler = new Handler(); Runnable runnable = new Runnable() { @Override public void run() { // 调用AlertDialog类的dismiss()方法关闭对话框,也可以调用cancel()方法。 ad.dismiss(); } }; // 5秒后运行run()方法。 handler.postDelayed(runnable, 5 * 1000 ); } }); builder.create().show(); } } |