6.4 程序管理器中的应用启动&卸载&分享

  /**

       * 卸载 app

       */

       public   void   unistallApp(){

            Intent intent =   new   Intent();

            intent.setAction(Intent.   ACTION_DELETE );

            intent.addCategory(Intent.   CATEGORY_DEFAULT );

            intent.setData(Uri. parse( "package:"   +   clickAppInfo .getPackName()));

            startActivityForResult(intent, 0);

      }

         //卸载之后告诉程序管理器界面重新填充数据,否则卸载之后的app还会出现在lv中

            

        // 方法1: onactivityResult

       @Override

       protected   void   onActivityResult(   int   requestCode,   int   resultCode, Intent data) {

            fillDateToLIst();

               super .onActivityResult(requestCode, resultCode, data);

      }

      // 方法2: 发送一条自定义广播

     <   receiver   android:name =   "xxxx" >

              < intent-filter   >

               

                  < action   android:name =   "android.intent.action.PACKAGE_REMOVED"   />

              </ intent-filter   >

          </ receiver   >

//---------------------------------------------------------------------------------------

      

      

      

       /**

       * 分享应用: 激活系统短信应用

       */

       public   void   shareApp(){

      

          /* <action android:name="android.intent.action.SEND" />

    <category android:name="android.intent.category.DEFAULT" />

    <data android:mimeType="image/*" />*/

            

            Intent intent=   new   Intent();

            intent.setAction(   "android.intent.action.SEND" );

            intent.addCategory(   "android.intent.category.DEFAULT" );

            intent.setType(   "image/*" );

            

          //分享内容

            intent.putExtra(intent.   EXTRA_TEXT ,   "推荐一款软件:"   + clickAppInfo   .getAppName()+

                           ",下载网址是:"   + "http://play.google.com/store/apps/details?id="   + clickAppInfo   .getPackName());

   

          startActivity(intent);

      

      }

      

//---------------------------------------------------------------------------------------

       /**

       * 启动 App的方法: 意图开启应用的第一个activity

       */

       public   void   startApp(){

               // 查找当前应用程序里面的第一个activity. 激活他.

                        PackageManager pm = getPackageManager();

                           try   {

                                 //懒加载

                              PackageInfo packInfo = pm.getPackageInfo(

                                             clickAppInfo .getPackName(),  PackageManager. GET_ACTIVITIES   );

                              ActivityInfo[] infos = packInfo. activities ;

                                 if   (infos !=   null   && infos.   length   > 0) {

                                    ActivityInfo activityInfo = infos[0];

                                    String className = activityInfo. name ;

                                    Intent intent =   new   Intent();

                                    intent.setClassName(   clickAppInfo .getPackName(), className);

                                    startActivity(intent);

                              }   else   {

                                    Toast. makeText( this ,   "没有找到入口activity" , 0).show();

                              }

                        }   catch   (NameNotFoundException e) {

                              e.printStackTrace();

                              Toast. makeText( this ,   "无法启动该应用" , 0).show();

                        }

            

      }

--------------------------------------------------------

问题:自己开启自己的时候出现重复加载相同的activity

指定软件管理的activity的启动模式为:  singleTask     

  <!--软件管理的activity  -->

          < activity

              android:name =   "com.itheima.mobilesafe.AppManagerActivity"

                android:theme =   "@android:style/Theme.Light.NoTitleBar"

                android:launchMode =   "singleTask"

              ></ activity   >