android - 无法设置权限 ACCESS_FINE_LOCATION

Question

我是 android 开发的新手，现在我很难获取当前用户位置。

list :

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

主要 Activity :

int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
Log.d("Check if permission", "permission is: " + permissionCheck);

Logd 返回权限为:-1

我做错了什么？

使用Android Studio，target-sdk为23

Answer 1

checkSelfPermission() 将检查用户是否已授予权限。如果检查失败(在您的情况下为 -1)，则您需要使用 requestPermissions()

向用户请求许可

在 android 文档 ( http://developer.android.com/training/permissions/requesting.html#perm-request ) 中有一个很好的解释，以及如何检查、通知和请求权限的示例

万一链接失效，下面是他们的代码:

// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(thisActivity,
                Manifest.permission.READ_CONTACTS)
        != PackageManager.PERMISSION_GRANTED) {

    // Should we show an explanation?
    if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
            Manifest.permission.READ_CONTACTS)) {

        // Show an expanation to the user *asynchronously* -- don't block
        // this thread waiting for the user's response! After the user
        // sees the explanation, try again to request the permission.

    } else {

        // No explanation needed, we can request the permission.

        ActivityCompat.requestPermissions(thisActivity,
                new String[]{Manifest.permission.READ_CONTACTS},
                MY_PERMISSIONS_REQUEST_READ_CONTACTS);

        // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
        // app-defined int constant. The callback method gets the
        // result of the request.
    }
}

(来源:Android 开发者文档)