定位图标箭头指向手机朝向示例
###1:配置搭建AndroidSDK工程###
- Android 3D地图 SDK
- Android 定位 SDK
- setLocationSource(LocationSource locationSource) 设置定位资源(V2.0版本起)
- addMarker(MarkerOptions options) 加一个Marker(标记)到地图上(V2.0版本起)
- addCircle(CircleOptions options) 添加圆形(circle)覆盖物到地图上(V2.0版本起)
- startLocation(); 启动定位 (V2.0.0版本起)
- setLocationOption(mLocationOption); 给定位客户端设置参数 (V2.0.0版本起)
- onLocationChanged(AMapLocation amapLocation); 监听器回调方法 (V2.0.0版本起)
- 获取手机sensor角度值并过滤
@Override
public void onSensorChanged(SensorEvent event) {
if (System.currentTimeMillis() - lastTime < TIME_SENSOR) {
return;
}
switch (event.sensor.getType()) {
case Sensor.TYPE_ORIENTATION: {
float x = event.values[0];
x += getScreenRotationOnPhone(mContext);
x %= 360.0F;
if (x > 180.0F)
x -= 360.0F;
else if (x < -180.0F)
x += 360.0F;
if (Math.abs(mAngle - x) < 3.0f) {
break;
}
mAngle = Float.isNaN(x) ? 0 : x;
if (mMarker != null) {
mMarker.setRotateAngle(360 - mAngle);
}
lastTime = System.currentTimeMillis();
}
}
}
- 获取当前手机屏幕旋转角度
/**
* 获取当前屏幕旋转角度
*
* @param context
* @return 0表示是竖屏; 90表示是左横屏; 180表示是反向竖屏; 270表示是右横屏
*/
public static int getScreenRotationOnPhone(Context context) {
final Display display = ((WindowManager) context
.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
switch (display.getRotation()) {
case Surface.ROTATION_0:
return 0;
case Surface.ROTATION_90:
return 90;
case Surface.ROTATION_180:
return 180;
case Surface.ROTATION_270:
return -90;
}
return 0;
}
- 定位回调成功处理Marker与Circle绘制
if (!mFirstFix) {
mFirstFix = true;
addCircle(location, amapLocation.getAccuracy());//添加定位精度圆
addMarker(location);//添加定位图标
mSensorHelper.setCurrentMarker(mLocMarker);//定位图标旋转
aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(location,18));
} else {
mCircle.setCenter(location);
mCircle.setRadius(amapLocation.getAccuracy());
mLocMarker.setPosition(location);
aMap.moveCamera(CameraUpdateFactory.changeLatLng(location));
}