Android應用程序ID

Question

任何人都可以說如何獲取設備中安裝的市場應用程序的應用程序ID。我想獲得特定安裝的應用程序的ID？

Answer 1

boolean installed = appInstalledOrNot(Your App Package as String); 

    if(installed){ 
      ////////App is Installed 
    } 

     private boolean appInstalledOrNot(String uri) { 
      PackageManager pm = getPackageManager(); 
      try { 
       pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES); 
       return true; 
      } catch (PackageManager.NameNotFoundException e) { 
       return false; 
      } 

     }