使用Android Marshmallow,即使您在Manifest文件中指定了这些权限,也必须明确请求用户的权限.
因此,您必须以这种方式请求位置权限：
首先,为位置创建请求代码
public static final int LOCATION_REQUEST_CODE = 1001; //Any number
然后检查是否已授予权限,如果没有,则代码将请求权限,该权限将显示要求拒绝/允许位置权限的本机弹出窗口
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_REQUEST_CODE);
} else {
locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER
,1000*60,2,this);
Location location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
}
上述代码应在请求任何位置之前写入,最好是在活动的onCreate()中.然后根据用户在弹出窗口中执行的操作,您将获得一个回调,您可以根据自己的要求执行回调.
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case LOCATION_REQUEST_CODE: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED
&& (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
|| ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)) {
locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER
,1000*60,2,this);
Location location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
}
}
}
}
此外,无论您何时尝试获取位置,都应检查是否已将权限授予您的应用程序,然后获取该位置.
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER
,1000*60,2,this);
Location location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
}
您可以请求Manifest.permission.ACCESS_FINE_LOCATION或Manifest.permission.ACCESS_COARSE_LOCATION或两者.这取决于您的要求.