我已经在android应用程序中集成了谷歌地图，一切都很好，但当应用程序检测到手机的GPS未启用时，它会显示一个对话框来启用GPS，当用户这样做并返回应用程序时，地图停止反应并变为蓝色(可能聚焦在海洋中(，当我摇动设备时，地图会变为活动状态并聚焦在用户当前位置地方
我想在人像模式下运行这个应用程序，所以抖动选项不会有太大帮助。有谁能帮我写代码，告诉我哪里错了吗。我在onResume、onRestart中尝试了各种链接和方法，但都没有帮助。
这是我在onCreate、onResume和onRestart中调用这个setupmapifneed函数的代码，但没有任何帮助。
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mapFragment == null) {
// Try to obtain the map from the SupportMapFragment.
mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
// creating GPS Class object
gps = new GPSTracker(MainActivity.this);
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(gps.getLatitude(), gps.getLongitude()), 15.0f));
googleMap.addMarker(new MarkerOptions()
.position(new LatLng(26.89209, 75.82759))
.title("FUN N FOOD"));
// check if GPS location can get
if (gps.canGetLocation()) {
Log.d("Your Location", "latitude:" + gps.getLatitude() + ", longitude: " + gps.getLongitude());
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(gps.getLatitude(), gps.getLongitude()), 15.0f));
} else {
gpsDialog = new MaterialDialog.Builder(MainActivity.this)
.titleColor(getResources().getColor(R.color.grey))
.title("GPS Settings")
.content("GPS is not enabled. Do you want to go to settings menu?")
.positiveText("Settings")
.negativeText("Cancel")
.positiveColorRes(R.color.grey)
.negativeColorRes(R.color.grey)
.onPositive(new MaterialDialog.SingleButtonCallback() {
@Override
public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) {
startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
gpsDialog.dismiss();
}
})
.onNegative(new MaterialDialog.SingleButtonCallback() {
@Override
public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) {
gpsDialog.dismiss();
}
})
.show();
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(gps.getLatitude(), gps.getLongitude()), 14.0f));
}
}
});
}
}
这是我的活动。在
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
这是我的其他方法
@Override
public void onPause() {
if (mAdView != null) {
mAdView.pause();
}
super.onPause();
}
@Override
public void onResume() {
super.onResume();
if (mAdView != null) {
mAdView.resume();
}
if (mapFragment == null) {
setUpMapIfNeeded();
}
}
@Override
protected void onRestart() {
super.onRestart();
if (mapFragment == null) {
setUpMapIfNeeded();
}
}
@Override
public void onDestroy() {
if (mAdView != null) {
mAdView.destroy();
}
super.onDestroy();
}
有人能提点什么吗。。。提前感谢
访问此http://code.tutsplus.com/tutorials/getting-started-with-google-maps-for-android-basics--cms-24635
第二个http://www.vogella.com/tutorials/AndroidGoogleMaps/article.html
希望这将有助于
我发现了一种非常简单的方法，可以忽略onResume部分，首先我将其集成到主活动中(融合位置提供程序Api(。
然后在我的启动屏幕上，我调出了一个方法，帮助我像OLA应用程序一样打开gps，当启动进入下一个活动时，它开始毫无问题地关注用户的当前位置。
我们可以这样做gps：创建一个函数
private GoogleApiClient mGoogleApiClient;
private void automaticGps() {
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API).addConnectionCallbacks(Splash.this)
.addOnConnectionFailedListener(Splash.this).build();
mGoogleApiClient.connect();
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
// **************************
builder.setAlwaysShow(true); // this is the key ingredient
// **************************
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi
.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result
.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can
// initialize location
// requests here.
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be
// fixed by showing the user
// a dialog.
try {
// Show the dialog by calling
// startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(Splash.this, 1000);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have
// no way to fix the
// settings so we won't show the dialog.
break;
}
}
});
}
}
覆盖方法：
@Override
public void onConnected(@Nullable Bundle bundle) {
Intent i = new Intent(Splash.this,MainActivity.class);
startActivity(i);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
并实现：
public class Splash extends Activity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener
在onCreate 中调用此函数
if(!gps.canGetLocation) {
automaticGps();
//iv.startAnimation(an2);
}
else {
//iv.startAnimation(an2);
finish();
Intent i = new Intent(Splash.this,MainActivity.class);
startActivity(i);
}
记住：
1( 使用android。Manifest.permission.ACCESS_FINE_LOCATION而不是Manifest.permission.ACCESS-FINE_LOCATION
2( 从onPause((中删除这些行：
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}