/**

* 检查手机上是否安装了指定的软件

* @param context

* @param packageName

* @return

*/

public static boolean isAvilible(Context context, String packageName) {

    final PackageManager packageManager = context.getPackageManager();

    List<PackageInfo> packageInfos = packageManager.getInstalledPackages();

    List<String> packageNames = new ArrayList<String>();

    if (packageInfos != null) {

        for (int i = ; i < packageInfos.size(); i++) {

            String packName = packageInfos.get(i).packageName;

            packageNames.add(packName);

        }

    }

    // 判断packageNames中是否有目标程序的包名，有TRUE，没有FALSE

    return packageNames.contains(packageName);

}