判斷手機是否安裝了某個程式

    /**
     * 判斷手機是否安裝了某個程式
     * @param packageName
     * @param context
     * @return
     */
    public static boolean isInstalled(String packageName,Context context){
        PackageManager packageManager = context.getPackageManager();
        //獲取已經安裝的app
        List<PackageInfo> installedPackages = packageManager.getInstalledPackages(0
 
);
        for (int i=0;i<installedPackages.size();i++){
            if(packageName.equalsIgnoreCase(installedPackages.get(i).packageName)){
                return true;
            }
        }

        return false;
    }