使用熔融LocationProviderClient时，“呼叫需要许可权可能会被用户拒绝”

Question

我了解您需要在fusedLocationProviderClient上执行方法之前检查用户是否已允许位置。所以我创建了一个像这样的全局方法：

fun locationAllowed(context: Context): Int {
    if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
        return PackageManager.PERMISSION_GRANTED
    }
    return PackageManager.PERMISSION_DENIED
}

并在我的活动中使用了它：

class Home : FragmentActivity() {

    lateinit var fusedLocationProviderClient: FusedLocationProviderClient

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_home)
        fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this)
        if (locationAllowed(this) == PackageManager.PERMISSION_GRANTED) {
            fusedLocationProviderClient.lastLocation // still gives me the error
        }
    }
}

但是我在fusedLocationProviderClient.lastLocation上仍然有红色下划线：Call requires permission which may be rejected by user: code should explicitly check to see if permission is available (with checkPermission) or explicitly handle a potential SecurityException.

知道为什么吗？