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我有獲取手機GPS位置的代碼。但它不能正常工作。無法獲得GPS位置
位置只顯示我第一次按下按鈕（獲取位置的按鈕）。我改變了我的地方，並再次按下它，但它永遠不會改變......即使當我重新啓動應用程序！
GPS：
package com.example.hhh;
public class GPSTracker extends Service implements LocationListener{
private final Context context;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude;
double longitude;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.context = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) context.getSystemService(LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(!isGPSEnabled && !isNetworkEnabled) {
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if(isGPSEnabled) {
if(location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if(locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if(locationManager != null) {
locationManager.removeUpdates(GPSTracker.this);
}
}
public double getLatitude() {
if(location != null) {
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude() {
if(location != null) {
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setTitle("GPS is settings");
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
context.startActivity(intent);
}
});
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
@Override
public void onLocationChanged(Location arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
主：
package com.Gps.getlocation;
public class MainActivity extends ActionBarActivity {
private EditText editText11;
private EditText editText22;
Button btnShowLocation;
Button btnn;
GPSTracker gps;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.lay);
editText11 = (EditText) findViewById(R.id.editText1);
editText22 = (EditText) findViewById(R.id.editText2);
btnShowLocation = (Button) findViewById(R.id.show_location);
btnn = (Button) findViewById(R.id.btn);
btnShowLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
gps = new GPSTracker(MainActivity.this);
if(gps.canGetLocation()) {
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
editText11.setText("" + latitude , TextView.BufferType.EDITABLE);
editText22.setText("" + longitude , TextView.BufferType.EDITABLE);
} else {
gps.showSettingsAlert();
}
}
});
}
}
我不喜歡把這裏所有的代碼，但我實在無法理解的問題。
這個問題應該是愚蠢的，我相信...但我找不到那個愚蠢的問題
首先，您需要[運行時請求權限]（https://developer.android.com/training/permissions/requesting.html）[ACCESS_FINE_LOCATION]（https://developer.android.com/reference /android/Manifest.permission.html#ACCESS_FINE_LOCATION），然後嘗試獲取位置信息。 – pRaNaY
@pRaNaY你的意思是：「」?? –
dave
在我的評論上方選中「在運行時請求權限」鏈接。您還可以選中[this]（http://stackoverflow.com/a/32084038/2949612）答案以向用戶請求運行時權限。 – pRaNaY