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 >