判断手机中是否安装某个软件

    private boolean isContain(String packageName) {        final PackageManager packageManager = this.getPackageManager();//获取packageManager        List<PackageInfo> packages = packageManager.getInstalledPackages(0);//获取所有已安装程序的包信息        //从packages中将包名字逐一取出        if (packages != null) {            for (PackageInfo packageInfo:packages) {                if(packageName.equals(packageInfo.packageName))                    return true;            }        }        return false;//判断pName中是否有目标程序的包名，有TRUE，没有FALSE    }

判断手机中是否安装某个软件，通过判断软件的包名来进行判断