private boolean isPkgInstalled(String pkgName) {PackageInfo packageInfo = null;try {packageInfo = this.getPackageManager().getPackageInfo(pkgName, 0);} catch (NameNotFoundException e) {packageInfo = null;e.printStackTrace();}if (packageInfo == null) {return false;} else {return true;}希望本文所述对大家Android程序设计有所帮助。