<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.amap.api.maps.MapView
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
public class wirtepipeFragement extends BaseFragment implements AMapLocationListener, LocationSource {
/**
* 标志位，标志已经初始化完成
*/
private boolean isPrepared;
/**
* 是否已被加载过一次，第二次就不再去请求数据了
*/
private boolean mHasLoadedOnce;
private AMap mMap;
private MapView mapView;
private OnLocationChangedListener mListener;
private AMapLocationClient mLocationClient;
private AMapLocationClientOption mLocationOption;
private LatLng myLocation;
private static wirtepipeFragement fragment;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
if (mView == null) {
// 需要inflate一个布局文件 填充Fragment
mView = inflater.inflate(R.layout.fragment_writepipe, container, false);
mapView = mView.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
initView();
isPrepared = true;
//实现懒加载
lazyLoad();
}
//缓存的mView需要判断是否已经被加过parent， 如果有parent需要从parent删除，要不然会发生这个mView已经有parent的错误。
ViewGroup parent = (ViewGroup) mView.getParent();
if (parent != null) {
parent.removeView(mView);
}
return mView;
}
/**
* 初始化控件
*/
private void initView() {
initMap();
setUpLocationStyle();
}
@Override
public void lazyLoad() {
if (!isPrepared || !isVisible || mHasLoadedOnce) {
return;
}
//填充各控件的数据
mHasLoadedOnce = true;
}
public static wirtepipeFragement newInstance() {
if(fragment == null){
synchronized(MapFragment.class){
if(fragment==null){
fragment = new wirtepipeFragement();
}
}
}
return fragment;
}
private void initMap() {
if (mMap == null) {
mMap = mapView.getMap();
}
mMap.setLocationSource(this);// 设置定位监听
mMap.setMyLocationEnabled(true);
UiSettings uiSettings = mMap.getUiSettings();
uiSettings.setZoomControlsEnabled(true);
CameraUpdate cameraUpdate = CameraUpdateFactory.zoomTo(15);
mMap.moveCamera(cameraUpdate);
}
private void setUpLocationStyle() {
// 自定义系统定位蓝点
// MyLocationStyle myLocationStyle = new MyLocationStyle();
// myLocationStyle.myLocationIcon(BitmapDescriptorFactory.fromResource(R.drawable.gps_point));
// myLocationStyle.strokeWidth(0);
// myLocationStyle.radiusFillColor(Color.TRANSPARENT);
// mMap.setMyLocationStyle(myLocationStyle);
MyLocationStyle myLocationStyle;
myLocationStyle = new MyLocationStyle();//初始化定位蓝点样式类
myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE);
// 连续定位、且将视角移动到地图中心点，定位点依照设备方向旋转，并且会跟随设备移动。（1秒1次定位）如果不设置myLocationType，默认也会执行此种模式。
myLocationStyle.interval(2000); //设置连续定位模式下的定位间隔，只在连续定位模式下生效，单次定位模式下不会生效。单位为毫秒。
mMap.setMyLocationStyle(myLocationStyle);//设置定位蓝点的Style
mMap.getUiSettings().setMyLocationButtonEnabled(true);//设置默认定位按钮是否显示，非必需设置。
mMap.setMyLocationEnabled(true);// 设置为true表示启动显示定位蓝点，false表示隐藏定位蓝点并不进行定位，默认是false。
}
@Override
public void onResume() {
super.onResume();
Log.d("zh", "onResume进来了");
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
Log.d("zh", mapView + ":onPause");
mapView.onPause();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
Log.d("zh", mapView + ":onSaveInstanceState");
mapView.onSaveInstanceState(outState);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("zh", mapView + ":onDestroy进来了");
mLocationOption = null;
mLocationClient = null;
mMap = null;
mapView.onDestroy();
}
@Override
public void onLocationChanged(AMapLocation aMapLocation) {
Log.d("zh", "onLocationChanged进来了");
Log.d("zh", aMapLocation + "");
Log.d("zh", aMapLocation.getErrorCode() + "");
if (aMapLocation != null && aMapLocation.getErrorCode() == 0) {
if (mListener != null) {
mListener.onLocationChanged(aMapLocation);// 显示系统小蓝点
}
//获取当前经纬度坐标
String address = aMapLocation.getAddress();
Log.d("zh",address);
myLocation = new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude());
//fixedMarker();
}
}
@Override
public void activate(OnLocationChangedListener onLocationChangedListener) {
Log.d("zh", "activate进来了");
mListener = onLocationChangedListener;
if (mLocationClient == null) {
mLocationClient = new AMapLocationClient(getActivity());
mLocationOption = new AMapLocationClientOption();
//设置定位监听
mLocationClient.setLocationListener(this);
//设置为高精度定位模式
mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
//设置定位参数
mLocationOption.setOnceLocation(true);//只定位一次
mLocationOption.setHttpTimeOut(2000);
mLocationClient.setLocationOption(mLocationOption);
// 此方法为每隔固定时间会发起一次定位请求，为了减少电量消耗或网络流量消耗，
// 注意设置合适的定位时间的间隔（最小间隔支持为2000ms），并且在合适时间调用stopLocation()方法来取消定位请求
// 在定位结束后，在合适的生命周期调用onDestroy()方法
// 在单次定位情况下，定位无论成功与否，都无需调用stopLocation()方法移除请求，定位sdk内部会移除
mLocationClient.startLocation();//开始定位
}
}
@Override
public void deactivate() {
Log.d("zh", "deactivate我是什么时候进来的");
mListener = null;
if (mLocationClient != null) {
mLocationClient.stopLocation();
mLocationClient.onDestroy();
}
mLocationClient = null;
}
}
