Android练习之AlertDialog

资源包：范例练习b9 FLExB9.rar
需求分析：
1.AlertDialog分类：
最简单的set几个button positive neutral negative
可以点击的setitems
单选的singleChoiceItem
复选MultChoiceItem
登录框通过layoutInflater
View Code
  1 package com.example.flexb9;
  2 
  3 import android.os.Bundle;
  4 import android.app.Activity;
  5 import android.app.AlertDialog;
  6 import android.content.Context;
  7 import android.content.DialogInterface;
  8 import android.view.LayoutInflater;
  9 import android.view.Menu;
 10 import android.view.View;
 11 import android.view.View.OnClickListener;
 12 import android.widget.Button;
 13 import android.widget.Toast;
 14 
 15 public class MainActivity extends Activity {
 16     
 17     private Button bt1;
 18     private Button bt2;
 19     private Button bt3;
 20     private Button bt4;
 21     private Button bt5;
 22     private int count;
 23 
 24     @Override
 25     protected void onCreate(Bundle savedInstanceState) {
 26         super.onCreate(savedInstanceState);
 27         setContentView(R.layout.activity_main);
 28         
 29         bt1 = (Button)findViewById(R.id.bt1);
 30         bt1.setOnClickListener(bt1Listener);
 31         bt2 = (Button)findViewById(R.id.bt2);
 32         bt2.setOnClickListener(bt1Listener);
 33         bt3 = (Button)findViewById(R.id.bt3);
 34         bt3.setOnClickListener(bt1Listener);
 35         bt4 = (Button)findViewById(R.id.bt4);
 36         bt4.setOnClickListener(bt1Listener);
 37         bt5 = (Button)findViewById(R.id.bt5);
 38         bt5.setOnClickListener(bt1Listener);
 39     }
 40     
 41     Button.OnClickListener bt1Listener = new Button.OnClickListener(){
 42         @Override
 43         public void onClick(View v) {
 44             final String[] itemArray = getResources().getStringArray(R.array.dialog_item);
 45             
 46             switch(v.getId()){
 47                 /******************************************************
 48                  * 简单对话框加几个setPositiveButton或setNeutralButton或setNegativeButton
 49                  ******************************************************/
 50                 case R.id.bt1:
 51                     new AlertDialog.Builder(MainActivity.this)
 52                         .setCancelable(true)
 53                         .setIcon(R.drawable.ic_launcher)
 54                         .setTitle("Hi")
 55                         .setMessage(getText(R.string.hello_world))
 56                         .setPositiveButton("Start", new DialogInterface.OnClickListener(){
 57                             @Override
 58                             public void onClick(DialogInterface dialog,
 59                                     int which) {
 60                                 Toast.makeText(MainActivity.this, "Positive", Toast.LENGTH_SHORT).show();
 61                             }
 62                         })
 63                         .setNeutralButton("Pause", new DialogInterface.OnClickListener(){
 64                             @Override
 65                             public void onClick(DialogInterface dialog,
 66                                     int which) {
 67                                 Toast.makeText(MainActivity.this, "Neutral", Toast.LENGTH_SHORT).show();
 68                             }
 69                         })
 70                         .setNegativeButton("Stop", new DialogInterface.OnClickListener(){
 71                             @Override
 72                             public void onClick(DialogInterface dialog,
 73                                     int which) {
 74                                 Toast.makeText(MainActivity.this, "Negative", Toast.LENGTH_SHORT).show();
 75                             }
 76                         })
 77                         .show();
 78                     break;
 79                 /******************************************************
 80                  * 点击选择列表对话框setItem()
 81                  ******************************************************/
 82                 case R.id.bt2:
 83                     new AlertDialog.Builder(MainActivity.this)
 84                         .setIcon(R.drawable.ic_launcher)
 85                         .setTitle("点选列表Title")
 86                         //.setMessage("bt2~MSG")setItems后就不能有msg
 87                         .setItems(R.array.dialog_item, new DialogInterface.OnClickListener() {
 88                             @Override
 89                             public void onClick(DialogInterface dialog, int which) {
 90                                 //item select后的操作
 91                                 new AlertDialog.Builder(MainActivity.this)
 92                                 .setIcon(R.drawable.ic_launcher)
 93                                 .setTitle("选择后")
 94                                 .setMessage("selected MSG:" + itemArray[which])
 95                                 .setNeutralButton("Posotive", new DialogInterface.OnClickListener() {
 96                                     @Override
 97                                     public void onClick(DialogInterface dialog, int which) {
 98                                         Toast.makeText(MainActivity.this, "Neutral", Toast.LENGTH_SHORT).show();
 99                                     }
100                                 })
101                                 .show();
102                             }
103                         })
104                         .show();
105                     break;
106                 /******************************************************
107                  * 单选列表对话框setSingleChoiceItem()
108                  ******************************************************/
109                 case R.id.bt3:
110                     new AlertDialog.Builder(MainActivity.this)
111                     .setIcon(R.drawable.ic_launcher)
112                     .setTitle("单选列表Title")
113                     //setSingleChoiceItems第二个参数设置显示的默认选中，选项索引从0开始，-1不选中任一项
114                     .setSingleChoiceItems(R.array.dialog_item, -1, new DialogInterface.OnClickListener() {
115                         @Override
116                         public void onClick(DialogInterface dialog, int which) {
117                             Toast.makeText(MainActivity.this, "u've selected " + itemArray[which], Toast.LENGTH_LONG).show();
118                             //点击后对话框消失
119                             dialog.cancel();
120                         }
121                     }).create()
122                     .show();
123                     break;
124                 /******************************************************
125                  * 复选列表对话框setMultiChoiceItems()
126                  ******************************************************/
127                 case R.id.bt4:
128                     count = 0;
129                     new AlertDialog.Builder(MainActivity.this)
130                     .setIcon(R.drawable.ic_launcher)
131                     .setTitle("复选列表Title")
132                     .setMultiChoiceItems(R.array.dialog_item, null, new DialogInterface.OnMultiChoiceClickListener(){
133                         @Override
134                         public void onClick(DialogInterface dialog, int which, boolean isChecked) {
135                             String[] array = MainActivity.this.getResources().getStringArray(R.array.dialog_item);
136                             String str;
137                             if(isChecked) {
138                                 count++;
139                             }else {
140                                 count--;
141                             }
142                             Toast.makeText(MainActivity.this, (isChecked ?" 选中了":" 取消了") + itemArray[which], Toast.LENGTH_LONG).show();
143                         }
144                     })
145                     .setPositiveButton("确定", new DialogInterface.OnClickListener() {
146                             @Override
147                             public void onClick(DialogInterface dialog, int which) {
148                                 Toast.makeText(MainActivity.this, "选择了" + count + "项 ", Toast.LENGTH_LONG).show();
149                             }
150                     })
151                     .show();
152                     break;
153                 /******************************************************
154                  * 对话框setView() LayoutInflater得到view
155                  ******************************************************/
156                 case R.id.bt5:
157                     LayoutInflater inflater = (LayoutInflater)MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
158                     View view = inflater.inflate(R.layout.layout_login,null);
159                     
160                     new AlertDialog.Builder(MainActivity.this)
161                     .setIcon(R.drawable.ic_launcher)
162                     .setTitle("对话框Title")
163                     .setView(view)  
164                     .setPositiveButton("确定", new DialogInterface.OnClickListener() {  
165                         @Override  
166                         public void onClick(DialogInterface dialog, int which) {  
167                             Toast.makeText(MainActivity.this, "登录中...", Toast.LENGTH_LONG).show();
168                         }  
169                     })
170                     .show();
171                     break;
172             }
173         }
174     };
175 
176     @Override
177     public boolean onCreateOptionsMenu(Menu menu) {
178         // Inflate the menu; this adds items to the action bar if it is present.
179         getMenuInflater().inflate(R.menu.activity_main, menu);
180         return true;
181     }
182 
183 }
184 //http://blog.csdn.net/hellogv/article/details/5955959
185 //http://android.blog.51cto.com/268543/333769
186 //http://blog.csdn.net/kuangc2008/article/details/6358915
posted on 2012-11-26 16:19 hanxun 阅读(231) 评论(0) 编辑收藏举报