我想在用户缩放时停用Android googlemaps上的滚动功能。在IOS谷歌地图中,它的那种简单,只需设置一个参数:self.settings.allowScrollGesturesDuringRotateOrZoom = NO; 不幸的是,我还没有在Android中找到这种功能,我正在寻找解决方案。我现在最好的想法是扩展googlemaps视图,截取视图上的触摸,如果触摸动作是捏,则手动设置缩放。现在,这在我看来相当骇人和不可靠。有一个更好的方法吗?还有其他建议或想法吗?我还没有任何关于此的代码,因此无法在此处包含任何代码。
对于某些情况,为什么需要这样做,是中心有一个用于标记地图精确中心的引脚,中心LatLng用于地址编码。
答案 0 :(得分:5)
我最终做了一个完全自定义的解决方案,但由于ScaleGestureDetector错误,它只能用于API> 16.如果发布更新,我会找到解决方案。现在我使用常规Mapview,其缩放比例为API< = 16和API> 16我使用自定义类:
public class CustomEventMapView extends MapView {
private int fingers = 0;
private GoogleMap googleMap;
private long lastZoomTime = 0;
private float lastSpan = -1;
private Handler handler = new Handler();
private ScaleGestureDetector gestureDetector;
public CustomEventMapView(Context context, GoogleMapOptions options) {
super(context, options);
}
public CustomEventMapView(Context context) {
super(context);
}
@Override
public void getMapAsync(final OnMapReadyCallback callback) {
super.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(final GoogleMap googleMap) {
gestureDetector = new ScaleGestureDetector(getContext(), new ScaleGestureDetector.OnScaleGestureListener() {
@Override
public boolean onScale(ScaleGestureDetector detector) {
if (lastSpan == -1) {
lastSpan = detector.getCurrentSpan();
} else if (detector.getEventTime() - lastZoomTime >= 50) {
lastZoomTime = detector.getEventTime();
googleMap.animateCamera(CameraUpdateFactory.zoomBy(getZoomValue(detector.getCurrentSpan(), lastSpan)), 50, null);
lastSpan = detector.getCurrentSpan();
}
return false;
}
@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
lastSpan = -1;
return true;
}
@Override
public void onScaleEnd(ScaleGestureDetector detector) {
lastSpan = -1;
}
});
CustomEventMapView.this.googleMap = googleMap;
callback.onMapReady(googleMap);
}
});
}
private float getZoomValue(float currentSpan, float lastSpan) {
double value = (Math.log(currentSpan / lastSpan) / Math.log(1.55d));
return (float) value;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
switch (ev.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_POINTER_DOWN:
fingers = fingers + 1;
break;
case MotionEvent.ACTION_POINTER_UP:
fingers = fingers - 1;
break;
case MotionEvent.ACTION_UP:
fingers = 0;
break;
case MotionEvent.ACTION_DOWN:
fingers = 1;
break;
}
if (fingers > 1) {
disableScrolling();
} else if (fingers < 1) {
enableScrolling();
}
if (fingers > 1) {
return gestureDetector.onTouchEvent(ev);
} else {
return super.dispatchTouchEvent(ev);
}
}
private void enableScrolling() {
if (googleMap != null && !googleMap.getUiSettings().isScrollGesturesEnabled()) {
handler.postDelayed(new Runnable() {
@Override
public void run() {
googleMap.getUiSettings().setAllGesturesEnabled(true);
}
}, 50);
}
}
private void disableScrolling() {
handler.removeCallbacksAndMessages(null);
if (googleMap != null && googleMap.getUiSettings().isScrollGesturesEnabled()) {
googleMap.getUiSettings().setAllGesturesEnabled(false);
}
}
}
答案 1 :(得分:3)
这是一个老问题,但是我有同样的问题。经过一番谷歌搜索后,我找到了这个解决方案(我认为这是正确的解决方案): 让您的活动实现onMapReadyCallback,然后在您覆盖的onMapReady中设置googleMap.getUiSettings()。setScrollGesturesEnabledDuringRotateOrZoom(false); 那对我来说就是诀窍。
public class MainActivity extends AppCompatActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener{
GoogleMap gMap;
}
@Override
public void onMapReady(GoogleMap googleMap) {
gMap = googleMap;
gMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
gMap.getUiSettings().setZoomControlsEnabled(true);
gMap.getUiSettings().setZoomGesturesEnabled(true);
gMap.getUiSettings().setCompassEnabled(false);
gMap.getUiSettings().setScrollGesturesEnabled(false);
gMap.getUiSettings().setScrollGesturesEnabledDuringRotateOrZoom(false);
gMap.setMyLocationEnabled(false);
gMap.animateCamera(CameraUpdateFactory.zoomTo(8f));
}
答案 2 :(得分:-2)
您需要做的就是将map:uiScrollGestures和map:uiZoomGestures分配给false
map:uiScrollGestures="false"
map:uiZoomGestures="false"