如何使用Target API 23和更高版本通过GPS获取用户位置 [英] How to get users Location through GPS with Target API 23 and higher
问题描述
我正在尝试在我的项目中实现一个GPStracker，我希望该GPStracker可以使用户获得经纬度，经度和邮政编码.我正在关注本教程； http://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/，但是，我似乎无法使代码正常工作，经过数小时的尝试和研究，我不确定应该怎么做.我是Android的新手，所以我可能犯了一个愚蠢的错误.
I am trying to implement a GPStracker in my project which I want to use to get users lat, long and post code. I am following this tutorial; http://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/, however, I can't seem to get the code working and after hours trying and researching I am not sure what I should do. I am fairly new to Android so I am probably making a silly mistake.
当我按照发布的网站上显示的指南进行操作时，我的代码收到一条错误消息，提示:
When I follow the guide as shown on the website posted I get an error message on my code saying:
Call requires permission which may be rejected by user: code should explicitly check to see if permission is available (with `checkPermission`) or explicitly handle a potential `SecurityException`
在线:
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
和
public void stopUsingGPS(){
if(locationManager != null){
locationManager.removeUpdates(GPSTracker.this);
}
}
我正在使用API 25，使用片段并在线搜索，这似乎是API 23及更高版本的问题.许多其他人也发布了类似的问题，但是当我尝试为他们提供的答案时，仍然无法正常工作.例如
I am using API 25, working with fragments and searching online this seems to be a problem with API 23 and above. Many others have posted a similar questions but when I try the answers provided for them I still can't get it to work; for example,
我尝试实施:
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
我认为授予Android的权限是在此之后，但仍然无法正常工作.如果有您认为更好的获取用户位置的新方法，请您指导我.
Which I assume grants the permission Android is after but it still doesn't work. If there is a new way of getting users location that you think is better please can you direct me to that.
我在我的项目中也包含以下权限:
I have also included following permissions in my project:
<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" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
推荐答案
如果您的应用定位到api 23或更高版本，则需要在运行时请求位置"权限.
If your app targets api 23 or above, you need to request the Location permission at runtime.
将此代码添加到您的活动中:
Add this code to your Activity:
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
private void checkLocationPermission() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an explanation 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.
new AlertDialog.Builder(this)
.setTitle("Location Permission Needed")
.setMessage("This app needs the Location permission, please accept to use location functionality")
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(MapLocationActivity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION );
}
})
.create()
.show();
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION );
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//Permission was granted, do your thing!
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
然后，只需在活动的onCreate()中调用checkLocationPermission().
Then, just call checkLocationPermission() in onCreate() of the Activity.
这篇关于如何使用Target API 23和更高版本通过GPS获取用户位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
