无法设置权限ACCESS_FINE_LOCATION

Question

我是android开发领域的新手，现在我很难获得当前的用户位置。

清单：

<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"/>

MainActivity：

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

Logd返回permission is: -1

我做得这么糟糕是什么原因？

使用Android，target-sdk是23

Answer 1

checkSelfPermission()将检查用户是否已授予权限。如果检查失败(在本例中为-1)，则需要使用requestPermissions()向用户请求权限。

对此有一个很好的解释，并举例说明了如何在android文档(http://developer.android.com/training/permissions/requesting.html#perm-request)中检查、通知和请求权限。

如果链接死了，下面是它们的代码：

// 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 Developer Docs)