Android 檢查手機上是否安裝了指定的軟件（根據包名檢測）

Android檢查手機上是否安裝了指定的軟件（根據包名檢測）

/**
* 檢查手機上是否安裝了指定的軟件
* @param context
* @param packageName
* @return
*/
public static boolean isAvilible(Context context, String packageName) {
    final PackageManager packageManager = context.getPackageManager();
    List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
    List<String> packageNames = new ArrayList<String>();

    if (packageInfos != null) {
        for (int i = 0; i < packageInfos.size(); i++) {
            String packName = packageInfos.get(i).packageName;
            packageNames.add(packName);
        }
    }
    // 判斷packageNames中是否有目標程序的包名，有TRUE，沒有FALSE
    return packageNames.contains(packageName);
}