Android是否可以检查用户允许或不允许位置权限

Question

我正在处理位置服务，我需要知道如何检查用户单击按钮允许或拒绝权限对话框？或者该应用的定位服务是打开还是关闭？

Answer 1

是的，这很容易做到。请参阅documentation. 下面的代码从文档中复制而来，展示了如何检查用户是否批准或取消了权限请求：

@Override
public void onRequestPermissionsResult(int requestCode,
        String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // permission was granted, yay! Do the
                // contacts-related task you need to do.

            } else {

                // permission denied, boo! Disable the
                // functionality that depends on this permission.
            }
            return;
        }

        // other 'case' lines to check for other
        // permissions this app might request
    }
}