通过app的Activity名字启动他人app

PackageManager packageManager = STBNetServerActivity.this.getPackageManager();

           // 获取手机里的应用列表

           List<PackageInfo> pInfo = packageManager.getInstalledPackages(0);

           for (int i = 0; i < pInfo.size(); i++)

           {

               PackageInfo p = pInfo.get(i);

               // 获取相关包的<application>中的label信息，也就是-->应用程序的名字

               String label = packageManager.getApplicationLabel(p.applicationInfo).toString();

               System.out.println(label);

               if (label.equals(packageName)){ //比较label  

                   String pName = p.packageName; //获取包名  

                   Intent intent = new Intent();  

                  //获取intent  

                   intent =packageManager.getLaunchIntentForPackage(pName);  

                   startActivity(intent);  

               }

           }