如何在Android上为不同的活动提供定位服务
我目前正在开发一款Android应用程序,我是这个领域的新手。 我想做以下工作: 创建一个类,该类封装了所需的功能,以便让活动知道用户的位置并向该活动提供映射 这应实现以下目标: 我有一个连接到位置服务的类来获取信息,其他活动可以使用这个类来获取地图(片段)以及其他信息(lat-long等),以供编程使用 我搞不懂……我不想让我的东西变成活动本身 但似乎整个Play服务的Google Location API都依赖于它是一个零碎的活动(不管是什么) 有什么想法吗 PS:我需要保持对2.3.3的支持 更新 我实现了一个扩展SupportMapFragment(缩写)的类,但在GMS的错误处理方面遇到了问题。在我的Galaxy Note 3上运行良好,但emulator有一个较旧版本的GMS,这(由于当前糟糕的错误处理)最终会导致空指针异常:如何在Android上为不同的活动提供定位服务,android,location,Android,Location,我目前正在开发一款Android应用程序,我是这个领域的新手。 我想做以下工作: 创建一个类,该类封装了所需的功能,以便让活动知道用户的位置并向该活动提供映射 这应实现以下目标: 我有一个连接到位置服务的类来获取信息,其他活动可以使用这个类来获取地图(片段)以及其他信息(lat-long等),以供编程使用 我搞不懂……我不想让我的东西变成活动本身 但似乎整个Play服务的Google Location API都依赖于它是一个零碎的活动(不管是什么) 有什么想法吗 PS:我需要保持对2.3.3的支
public class LocationFragment extends SupportMapFragment implements GooglePlayServicesClient.ConnectionCallbacks,
GooglePlayServicesClient.OnConnectionFailedListener,
LocationListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
view = inflater.inflate(R.layout.map_fragment, container, false);
initilizeMap();
configureLocationClient();
locationManager = (LocationManager) activity.getSystemService(Context.LOCATION_SERVICE);
// Start with updates turned off
updatesRequested = false;
map.getUiSettings().setMyLocationButtonEnabled(true);
locationClient = new LocationClient(activity.getBaseContext(), this, this);
return view;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activity = getActivity();
checkGooglePlayServices();
}
private boolean checkGooglePlayServices() {
// Check that Google Play services is available
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(activity.getBaseContext());
// If Google Play services is available
if (ConnectionResult.SUCCESS == resultCode) {
// In debug mode, log the status
Log.d(TAG + ".servicesConnected()", "Google Play services is available.");
// Continue
return true;
// Google Play services was not available for some reason
} else {
Log.d(TAG + ".servicesConnected()", "Google Play services is unavailable or outdated: " + resultCode);
// Get the error dialog from Google Play services
try {
GooglePlayServicesUtil.getErrorDialog(resultCode, activity, CONNECTION_FAILURE_RESOLUTION_REQUEST).show();
} catch (Exception e) {
Log.e("Error: GooglePlayServiceUtil: ", "" + e);
}
/**
Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(resultCode, activity, CONNECTION_FAILURE_RESOLUTION_REQUEST);
// If Google Play services can provide an error dialog
if (errorDialog != null) {
// Create a new DialogFragment for the error dialog
ErrorDialogFragment errorFragment = new ErrorDialogFragment();
// Set the dialog in the DialogFragment
errorFragment.setDialog(errorDialog);
// Show the error dialog in the DialogFragment
errorFragment.show(activity.getSupportFragmentManager(),"Location Updates");
}*/
return false;
}
}
相应的活动是:
public class LocationTest extends FragmentActivity implements LocationListener {
private static final String TAG = LocationTest.class.getSimpleName();
private int count = 0;
private TextView lat;
private TextView lng;
private TextView quality;
private TextView conState;
private TextView refreshCount;
private TextView distance;
private LocationFragment locFrag;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.locationtest);
FragmentManager fManager = getSupportFragmentManager();
locFrag = new LocationFragment();
FragmentTransaction ft = fManager.beginTransaction();
ft.replace(R.id.map, locFrag);
ft.addToBackStack(null);
ft.commit();
locFrag.setGoal(Double.valueOf(8.83749747285), Double.valueOf(53.0663656578));
lat = (TextView) findViewById(R.id.curLat);
lng = (TextView) findViewById(R.id.curLng);
quality = (TextView) findViewById(R.id.curQuality);
conState = (TextView) findViewById(R.id.conState);
refreshCount = (TextView) findViewById(R.id.count);
distance = (TextView) findViewById(R.id.distance);
}
public void refreshLocation(View v) {
locFrag.refreshLocation(v);
}
public void toggleUpdates(View v) {
locFrag.toggleUpdates(v);
}
public void onLocationChanged(Location location) {
// Let the location parent know about the location change
// super.onLocationChanged(location);
count++;
lat.setText(Double.toString(locFrag.getCurrentLatitude()));
lng.setText(Double.toString(locFrag.getCurrentLongitude()));
quality.setText(Float.toString(locFrag.getAccuracy()));
conState.setText(Boolean.toString(locFrag.isConnected()));
refreshCount.setText(Integer.toString(count));
distance.setText(Float.toString(locFrag.getDistance()));
}
@Override
protected void onStart() {
super.onStart();
Log.d(TAG, "onStart()");
}
@Override
protected void onPause() {
super.onPause();
Log.d(TAG, "onPause()");
}
@Override
protected void onStop() {
super.onStop();
Log.d(TAG, "onStop()");
}
@Override
protected void onResume() {
super.onResume();
Log.d(TAG, "onResume()");
}
}
我想知道是否有可能让google建议的ErrorDialog从SupportMapFragment开始工作,以便能够处理错误,或者停止片段膨胀并返回到以前的活动
感谢您的帮助:)在当前正在捕获位置的类中使用此代码 currentLocation是位置对象
Intent intent = new Intent(this,target.class)
Bundle b = new Bundle();
b.putParcelable("Location", currentLocation);
i.putExtra("Location", b);
startActivity(i);
接收活动代码:
b = getArguments();
Location location = b.getParcelable("Location");
这样你就可以通过这个位置。我想它可能对你有用