android - 为结果启动设置活动

Question

在我的应用程序中，我正在检查用户设备上是否启用了 GPS，如果没有，我想将他发送到设置让他打开它。

Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivityForResult(intent, LocationHelper.LOCATION_SETTINGS_REQUEST_CODE);

用户关闭设置屏幕后，我会在onActivityResult().

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == LocationHelper.LOCATION_SETTINGS_REQUEST_CODE) {
        LogUtils.d("onActivityResult from settings");
        fetchCurrentLocation();
    }
}

但是，onActivityResult()不会调用。我做错了什么还是这种方法通常不起作用？提前致谢。

Answer 1

lauch the setting intent :

Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);

and fetch the current location in onResume method :

public void onResume(){
    super.onResume();
    if(isGPSEnabled){
         fetchCurrentLocation();
}
}

after backing from setting screen , your onResume method will be call and here you can fetch your location.

Answer 2

您是否在清单中定义了 ACCESS_FINE_LOCATION 权限？

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