public void addInstallApk(String apkFileName,String packageName){
  mInstallFileNames.add(apkFileName);
  mUninstallPackages.add(packageName);
}

public void addInstallApk ( String apkFileName , String packageName ) { mInstallFileNames . add ( apkFileName ) ; mUninstallPackages . add ( packageName ) ; }
add an apk to install .
