Android AlertDialog

  一、AlertDialog简介：AlertDialog的构造方法被声明为protected，所以不能直接使用new关键字来创建AlertDialog类的对象实例。要想创建AlertDialog对话框，需要使用Builder类，该类是AlertDialog类中定义的一个内嵌类。因此必须创建AlertDialog.Builder类的对象实例，然后再调用show()来显示对话框。

    例如：    AlertDialog.Builder db= new Builder(this);

                    db..create().show();

 二、属性介绍
1 AlertDialog.Builder属性 
* setTitle： 为对话框设置标题 ；
* setIcon ： 为对话框设置图标；
* setMessage： 为对话框设置内容；
* setView ：  给对话框设置自定义样式 ；
* setItems： 设置对话框要显示的一个list，一般用于显示几个命令时；
* setMultiChoiceItems：用来设置对话框显示一系列的复选框；
* setNeutralButton ： 响应中立行为的点击;
* setPositiveButton ： 响应Yes/Ok的点击 ；
* setNegativeButton ：响应No/Cancel的点击 ；
* create ： 创建对话框 ；
* show ： 显示对话框；
2 ProgressDialog属性
*setProgressStyle：      设置进度条风格，风格为圆形，旋转的； 
*setTitlt：                          设置ProgressDialog 标题；
*setMessage：              设置ProgressDialog提示信息；
*setIcon：                         设置ProgressDialog标题图标；
*setIndeterminate：    设置ProgressDialog 的进度条是否不明确；
*setCancelable：         设置ProgressDialog 是否可以按返回键取消；
*setButton：              设置ProgressDialog 的一个Button（需要监听Button事件）； 
*show：                     显示ProgressDialog。

可以创建类型的对话框，如：带按钮、简单列表、单选列表、多选列表、水平进度或圆形对话框(默认是：圆形)、悬浮对话框和触摸任何位置都可以关闭的对话框等，也可以自定义对话框（下面有自定义登陆示例）。

三、 示例

//////////////////////////////////////////////////////////////////////////////

023         /* 【简单提示对话框】 */

024         Button btn1 = (Button) findViewById(R.id.dialg_demo_btn01);

025         btn1.setOnClickListener(new OnClickListener()

026         {

027             public void onClick(View v)

028             {

029                 // TODO Auto-generated method stub

030                 new AlertDialog.Builder(dialog_demo.this).setTitle("简单提示对话框").setMessage("这是提示信息")

031                         .show();

032                 return;

033             }

034         });

035         // //////////////////////////////////////////////////////////////////////////////

036         /* 【带确定取消按钮的提示对话框】 */

037         Button btn2 = (Button) findViewById(R.id.dialg_demo_btn02);

038         btn2.setOnClickListener(new OnClickListener()

039         {

040             public void onClick(View v)

041             {

042                 // TODO Auto-generated method stub

043                 AlertDialog.Builder dialog02 = new AlertDialog.Builder(dialog_demo.this);

044                 dialog02.setTitle("带确定取消按钮的提示对话框");

045                 dialog02.setIcon(R.drawable.qq);

046                 dialog02.setMessage("这是提示内容");

047                 dialog02.setPositiveButton("确定", new DialogInterface.OnClickListener()

048                 {

049                     public void onClick(DialogInterface dialoginterface, int which)

050                     {

051                         Toast.makeText(dialog_demo.this, "你选择了确定", Toast.LENGTH_LONG).show();

052                     }

053                 });

054                 dialog02.setNegativeButton("取消", new DialogInterface.OnClickListener()

055                 {

056                     public void onClick(DialogInterface dialoginterface, int which)

057                     {

058                         Toast.makeText(dialog_demo.this, "你选择了取消", Toast.LENGTH_LONG).show();

059                     }

060                 });

061                 dialog02.create().show();

062                 return;

063             }

064         });

065         // //////////////////////////////////////////////////////////////////////////////

066         /* 【带多个按钮的提示对话框】 */

067         Button btn3 = (Button) findViewById(R.id.dialg_demo_btn03);

068         btn3.setOnClickListener(new OnClickListener()

069         {

070             public void onClick(View v)

071             {

072                 // TODO Auto-generated method stub

073                 AlertDialog.Builder dialog03 = new AlertDialog.Builder(dialog_demo.this);

074                 dialog03.setIcon(R.drawable.img1);

075                 dialog03.setTitle("带多个按钮的提示对话框");

076                 dialog03.setMessage("你最喜欢的球类运动是什么呢？");

077                 dialog03.setPositiveButton("篮球", new DialogInterface.OnClickListener()

078                 {

079                     public void onClick(DialogInterface dialoginterface, int which)

080                     {

081                         showDialog("篮球很不错");

082                     }

083                 });

084                 dialog03.setNeutralButton("乒乓球", new DialogInterface.OnClickListener()

085                 {

086                     public void onClick(DialogInterface dialoginterface, int which)

087                     {

088                         showDialog("乒乓球很不错");

089                     }

090                 });

091                 dialog03.setNegativeButton("足球", new DialogInterface.OnClickListener()

092                 {

093                     public void onClick(DialogInterface dialoginterface, int which)

094                     {

095                         showDialog("足球很不错");

096                     }

097                 });

098                 dialog03.create().show();

099                 return;

100             }

101         });

102         // //////////////////////////////////////////////////////////////////////////////

103         /*【单选按钮对话框】*/

104         Button btn4 = (Button) findViewById(R.id.dialg_demo_btn04);

105         btn4.setOnClickListener(new OnClickListener()

106         {

107             public void onClick(View v)

108             {

109                 // TODO Auto-generated method stub

110                 mSingleChoiceID = -1;

111                 AlertDialog.Builder dialog04 = new AlertDialog.Builder(dialog_demo.this);

112                 dialog04.setTitle("单选按妞");

113                 dialog04.setSingleChoiceItems(m_Items, 0, new DialogInterface.OnClickListener()

114                 {

115                     public void onClick(DialogInterface dialog, int whichButton)

116                     {

117                         mSingleChoiceID = whichButton;

118                         showDialog("你选择的id为" + whichButton + " , " + m_Items[whichButton]);

119                     }

120                 });

121                 dialog04.setPositiveButton("确定", new DialogInterface.OnClickListener()

122                 {

123                     public void onClick(DialogInterface dialog, int whichButton)

124                     {

125                         if (mSingleChoiceID > 0)

126                         {

127                             showDialog("你选择的是" + mSingleChoiceID);

128                         }

129                     }

130                 });

131                 dialog04.setNegativeButton("取消", new DialogInterface.OnClickListener()

132                 {

133                     public void onClick(DialogInterface dialog, int whichButton)

134                     {

135                              

136                     }

137                 });

138                 dialog04.create().show();

139                 return;

140             }

141         });

142         // //////////////////////////////////////////////////////////////////////////////

143         /*【多选按钮对话框】*/

144         Button btn5 = (Button) findViewById(R.id.dialg_demo_btn05);

145         btn5.setOnClickListener(new OnClickListener()

146         {

147             public void onClick(View v)

148             {

149                 // TODO Auto-generated method stub

150                 MultiChoiceID.clear();

151                 AlertDialog.Builder dialog05 = new AlertDialog.Builder(dialog_demo.this);

152                 dialog05.setTitle("多选按钮");

153                 dialog05.setMultiChoiceItems(m_Items, new boolean[]

154                 { false, false, false},

155                         new DialogInterface.OnMultiChoiceClickListener()

156                         {

157                             public void onClick(DialogInterface dialog, int whichButton,

158                                     boolean isChecked)

159                             {

160                                 if (isChecked)

161                                 {

162                                     MultiChoiceID.add(whichButton);

163                                     showDialog("你选择的id为" + whichButton + " , "

164                                             + m_Items[whichButton]);

165                                 } else

166                                 {

167                                     MultiChoiceID.remove(whichButton);

168                                 }

169  

170                             }

171                         });

172                 dialog05.create().show();

173                 return;

174             }

175         });

176         // //////////////////////////////////////////////////////////////////////////////

177         /*【列表框对话框】*/

178         Button btn6 = (Button) findViewById(R.id.dialg_demo_btn06);

179         btn6.setOnClickListener(new OnClickListener()

180         {

181             public void onClick(View v)

182             {

183                 // TODO Auto-generated method stub

184                 AlertDialog.Builder dialog06 = new AlertDialog.Builder(dialog_demo.this);

185                 dialog06.setTitle("列表框");

186                 dialog06.setItems(m_Items, new DialogInterface.OnClickListener()

187                 {

188                     public void onClick(DialogInterface dialog, int which)

189                     {

190                         // 点击后弹出窗口选择了第几项

191                         showDialog("你选择的id为" + which + " , " + m_Items[which]);

192                     }

193                 });

194                 dialog06.create().show();

195                 return;

196             }

197         });       

//////////////////////////////////////////////////////////////////////////////

199         /*【自定义登录对话框】*/

200         Button btn7 = (Button) findViewById(R.id.dialg_demo_btn07);

201         btn7.setOnClickListener(new OnClickListener()

202         {

203             public void onClick(View v)

204             {

205                 // TODO Auto-generated method stub

206                 LayoutInflater factory = LayoutInflater.from(dialog_demo.this);               

207                 final View view = factory.inflate(R.layout.dialog_demo_login, null);// 获得自定义对话框

208                  

209                 AlertDialog.Builder dialog07 = new AlertDialog.Builder(dialog_demo.this);

210                 dialog07.setIcon(R.drawable.qq);

211                 dialog07.setTitle("自定义登录对话框");

212                 dialog07.setView(view);// 引用自己定义的布局


213                 dialog07.setPositiveButton("确定", new DialogInterface.OnClickListener()

214                 {

215                     public void onClick(DialogInterface dialog, int whichButton)

216                     {

217  

218                         EditText userName = (EditText) view

219                                 .findViewById(R.id.dialog_demo_loginETUserName);

220                         EditText password = (EditText) view

221                                 .findViewById(R.id.dialog_demo_loginETPassWord);

222                         showDialog("姓名 ：" + userName.getText().toString() + "密码："

223                                 + password.getText().toString());

224                     }

225                 });

226                 dialog07.setNegativeButton("取消", new DialogInterface.OnClickListener()

227                 {

228                     public void onClick(DialogInterface dialog, int whichButton)

229                     {

230                         //Toast.makeText(dialog_demo.this, "你选择了取消", Toast.LENGTH_LONG).show();

231                         showDialog("你选择了取消");

232                     }

233                 });

234                 dialog07.create().show();

235                 return;

236             }

237         });

238         // //////////////////////////////////////////////////////////////////////////////

239         Button btn8 = (Button) findViewById(R.id.dialg_demo_btn08);

240         btn8.setOnClickListener(new OnClickListener()

241         {

242             public void onClick(View v)

243             {

244                 // TODO Auto-generated method stub

245                 mProgressDialog = new ProgressDialog(dialog_demo.this);//创建ProgressDialog对象

246                 mProgressDialog.setIcon(R.drawable.qq);// 设置ProgressDialog标题 图标

247                 mProgressDialog.setTitle("进度条窗口");// 设置ProgressDialog标题

248                 mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置进度条风格，风格为长形

249                 mProgressDialog.setMax(MAX_PROGRESS);// 设置ProgressDialo进度条进度

250                 mProgressDialog.setButton("确定", new DialogInterface.OnClickListener()

251                 {

252                     public void onClick(DialogInterface dialog, int whichButton)

253                     {

254                         // 这里添加点击后的逻辑

255                     }

256                 });

257                 mProgressDialog.setButton2("取消", new DialogInterface.OnClickListener()

258                 {

259                     public void onClick(DialogInterface dialog, int whichButton)

260                     {

261                         // 这里添加点击后的逻辑

262                     }

263                 });

264                 mProgressDialog.show();

265                 new Thread()

266                 {

267                     @Override

268                     public void run()

269                     {

270                         int Progress = 0;

271                         while (Progress < MAX_PROGRESS)

272                         {

273                             try

274                             {               

275                                 mProgressDialog.setProgress(Progress++); 

276                                 //mProgressDialog.incrementProgressBy(1);

277                                 Thread.sleep(100);

278                             } catch (Exception e)

279                             {

280                                 // TODO Auto-generated catch block

281                                 mProgressDialog.cancel();

282                                 //e.printStackTrace();

283                             }

284                         }   

285                     };

286                 }.start();

287                 return;

288             }

289         });

290         // //////////////////////////////////////////////////////////////////////////////

291         /*【圆形(转圈)进度条】*/

292         Button btn9 = (Button) findViewById(R.id.dialg_demo_btn09);

293         btn9.setOnClickListener(new OnClickListener()

294         {

295             public void onClick(View v)

296             {

297                 // TODO Auto-generated method stub

298                 mProgressDialog = new ProgressDialog(dialog_demo.this);//创建ProgressDialog对象

299                 mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); //设置进度条风格，风格为圆形，旋转的

300                 mProgressDialog.setTitle("读取ing...");// 设置ProgressDialog标题

301                 mProgressDialog.setMessage("正在读取中请稍候...");// 设置ProgressDialog提示信息

302                 mProgressDialog.setIndeterminate(true);//设置ProgressDialog 的进度条不明确

303                 mProgressDialog.setCancelable(true);// 设置ProgressDialog 可以按退回键取消

304                 mProgressDialog.setButton("确定", new DialogInterface.OnClickListener()

305                 {

306                     public void onClick(DialogInterface dialog, int whichButton)

307                     {

308                         // 这里添加点击后的逻辑

309                     }

310                 });

311                 mProgressDialog.show();// 让ProgressDialog显示

312                 return;

313             }

314         });

315         // //////////////////////////////////////////////////////////////////////////////

316         /*【带补充对话框】*/

317         Button btn10 = (Button) findViewById(R.id.dialg_demo_btn10);

318         btn10.setOnClickListener(new OnClickListener()

319         {

320             public void onClick(View v)

321             {

322                 // TODO Auto-generated method stub

323                 return;

324             }

325         });