判断程序权限

在开发中偶尔碰到需要进行某个权限的判断获取，以下几行代码即可轻松搞定。

PackageManager pm = mContext.getPackageManager();
int i = pm.checkPermission("android.permission.READ_PHONE_STATE", mContext.getPackageName());
if (i == PackageManager.PERMISSION_GRANTED){
    Log.d("WL", "onCreate:  get permission " );
}else {
    Log.d("WL", "onCreate:  no permission ");
}