【发布时间】:2016-07-30 12:57:57
【问题描述】:
我开发了一个简单的 Android 应用程序,在这个简单的应用程序中我想获取 GPS 纬度和经度数据,它在我的模拟器中可以正常工作,但是当我安装在真正的 Android 设备上时它就无法工作。请帮我解决这个问题,以下是我的代码。提前致谢
public class getLocation extends AppCompatActivity {
private Button btnGetLocation;
private TextView textGPS;
private LocationManager locationManager;
private LocationListener locationListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_get_location);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
btnGetLocation = (Button) findViewById(R.id.btnGetLocation);
textGPS = (TextView) findViewById(R.id.textViewGps);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
locationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
textGPS.setText("lat: "+location.getLatitude()+" long: "+location.getLongitude());
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
};
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.INTERNET
},10);
return;
}
}else{
configureButton();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode){
case 10:
if(grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
configureButton();
return;
}
}
private void configureButton() {
btnGetLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
locationManager.requestLocationUpdates("gps", 0, 0, locationListener);
}
});
}
}
【问题讨论】:
-
您只请求 GPS...您的设备需要与卫星取得联系!走到外面去测试一下!另外,你不应该使用硬编码的“gps”,你应该使用
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener); -
谢谢我走到外面它工作了
标签: android android-gps