百度地圖:定位,軌跡,白板,載入崩潰,定位到非洲
阿新 • • 發佈:2019-02-12
這兩天道長在弄百度地圖,開發中也遇到了一些問題,在這裡和大家分享一下(額,主要是記錄一下,省的下次又忘了)
一、準備
二、定位
1.百度地圖配置
- 新增許可權
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
- 新增百度金鑰
<meta-data
android:name="com.baidu.lbsapi.API_KEY"
android:value="百度金鑰" />
- 新增百度定位服務
<!-- 百度定位SDK service BEGIN -->
<service
android:name="com.baidu.location.f"
android:enabled="true"
android:process=":remote" >
<intent-filter>
<action android:name="com.baidu.location.service_v2.2" >
</action>
</intent-filter>
</service>
2.百度地圖定位實現
- 初始化百度地圖
private void initMap() {
// 獲取地圖控制元件引用
mMapView.removeViewAt(2);
// 不顯示縮放比例尺
mMapView.showZoomControls(false);
// 百度地圖
mBaiduMap = mMapView.getMap();
}
- 初始化定位
private void initLocation() {
// 定位客戶端的設定
mLocationClient = new LocationClient(getApplicationContext());
mLocationListener = new MyLocationListener();
// 註冊監聽
mLocationClient.registerLocationListener(mLocationListener);
// 配置定位
LocationClientOption option = new LocationClientOption();
option.setOpenGps(true);// 開啟gps
option.setCoorType("bd09ll"); // 設定座標型別
option.setScanSpan(3000); // 呼叫監聽時間間隔
mLocationClient.setLocOption(option);
}
- 實現定位監聽介面
/**
* 定位SDK監聽介面
*/
public class MyLocationListener implements BDLocationListener {
@Override
public void onReceiveLocation(BDLocation location) {
// map view 銷燬後不在處理新接收的位置
if (location == null || mMapView == null)
return;
MyLocationData locData = new MyLocationData.Builder()
.accuracy(location.getRadius())
.latitude(location.getLatitude())
.longitude(location.getLongitude()).build();
mBaiduMap.setMyLocationData(locData);
if (isFirst == true){
LatLng cenpt = new LatLng(location.getLatitude(), location.getLongitude());
// LatLng cenpt = new LatLng(40.051558, 116.314941);
MapStatus mMapStatus = new MapStatus.Builder().target(cenpt).zoom(14).build();
MapStatusUpdate mMapStatusUpdate = MapStatusUpdateFactory.newMapStatus(mMapStatus);
mBaiduMap.animateMapStatus(mMapStatusUpdate);
isFirst = false;
}
}
@Override
public void onConnectHotSpotMessage(String s, int i) {
}
}
- 定位到某一個點
這個是根據經緯度定位並移動到一個點,然後在上面新增圖層
private void refreshActivityView() {
// 改變地圖狀態 40.051558,116.314941 29.806651,121.606983
// LatLng cenpt = new LatLng(Double.parseDouble(lat), Double.parseDouble(lng));
LatLng cenpt = new LatLng(40.051558, 116.314941);
MapStatus mMapStatus = new MapStatus.Builder().target(cenpt).zoom(14).build();
MapStatusUpdate mMapStatusUpdate = MapStatusUpdateFactory.newMapStatus(mMapStatus);
mBaiduMap.animateMapStatus(mMapStatusUpdate);
OverlayOptions ooA = new MarkerOptions().position(cenpt).icon(BitmapDescriptorFactory
.fromResource(R.drawable.club_track_location))
.zIndex(10).draggable(true);
mBaiduMap.addOverlay(ooA);
}
三、軌跡
軌跡就是在百度地圖上新增一個圖層,把定位資訊繪製在圖層上
- 繪製軌跡圖層
private void drawTrackLine(BDLocation location) {
dot = new LatLng(location.getLatitude(), location.getLongitude());
if (startTrack == true) {
line.add(dot);
if (line.size() == 1) {
// 這裡繪製起點
drawStart(line);
if (isPause != true) {
ToastUtil.showCenter(ClubTrackActivity.this, "軌跡已開啟");
}
} else if (line.size() > 3) {
points_tem = line.subList(line.size() - 2, line.size());
options = new PolylineOptions().color(0xfe12b7f5).width(10)
.points(points_tem);
mBaiduMap.addOverlay(options);
}
}
}
- 繪製起點、終點
/**
* 繪製起點,取前n個點座標的平均值繪製起點
*
* @param points2
*/
public void drawStart(List<LatLng> points2) {
double myLat = 0.0;
double myLng = 0.0;
for (LatLng ll : points2) {
myLat += ll.latitude;
myLng += ll.longitude;
}
LatLng avePoint = new LatLng(myLat / points2.size(), myLng
/ points2.size());
line.add(avePoint);
OverlayOptions ooA;
if (setDot == false) {
ooA = new MarkerOptions().position(avePoint).icon(BitmapDescriptorFactory
.fromResource(R.drawable.club_track_start))
.zIndex(4).draggable(true);
} else {
ooA = new DotOptions().center(avePoint).color(0xfe12b7f5).radius(15);
}
mBaiduMap.addOverlay(ooA);
}
/**
* 繪製終點。
*
* @param points2
*/
protected void drawEnd(List<LatLng> points2) {
double myLat = 0.0;
double myLng = 0.0;
if (points2.size() >= 2) {
for (int i = points2.size() - 2; i < points2.size(); i++) {
LatLng ll = points2.get(i);
myLat += ll.latitude;
myLng += ll.longitude;
}
LatLng avePoint = new LatLng(myLat / 2, myLng / 2);
OverlayOptions ooA;
if (setDot == false) {
ooA = new MarkerOptions().position(dot).icon(BitmapDescriptorFactory
.fromResource(R.drawable.club_track_close))
.zIndex(4).draggable(true);
} else {
ooA = new DotOptions().center(avePoint).color(0xfe12b7f5).radius(15);
mBaiduMap.addOverlay(ooA);
}
setDotSuc = true;
mBaiduMap.addOverlay(ooA);
} else {
if (isPause == false && setDot == false) {
OverlayOptions ooA = new MarkerOptions().position(dot).icon(BitmapDescriptorFactory
.fromResource(R.drawable.club_track_close))
.zIndex(4).draggable(true);
setDotSuc = true;
mBaiduMap.addOverlay(ooA);
}
}
}
四、遇到的bug
1.白板
描述:載入地圖時顯示白板,沒有網格
原因:經緯度傳反了
2.載入崩潰
描述:百度地圖在華為mate8上載入崩潰,異常內容:
java.lang.UnsatisfiedLinkError: dlopen failed: "/data/app/com.wanbu.dascom-1/lib/arm64/libBaiduMapSDK_v3_2_0_15.so" is 32-bit instead of 64-bit
原因:Android5.0以後支援64位的手機晶片,但是百度地圖在3.5.0開始對64位的手機晶片開始支援,在Android5.0+的64位手機上使用3.5.0之前版本的百度地圖SDK會崩潰。
解決方法:更新百度地圖SDK
3.定位到非洲
描述:百度地圖定位到非洲幾內亞灣。當時道長看到這個現象是崩潰的,這是什麼鬼~~~
使用百度地圖的Api查詢原因:
int code = location.getLocType();
ToastUtil.showCenter(getApplicationContext(), "key= " + code);
道長返回的code值為505,可以檢視原始碼:
public void setLocType(int var1) {
this.mLocType = var1;
switch(var1) {
case 61:
this.setLocTypeDescription("GPS location successful!");
this.setUserIndoorState(0);
break;
case 62:
this.setLocTypeDescription("Location failed beacuse we can not get any loc information!");
break;
case 63:
case 67:
this.setLocTypeDescription("Offline location failed , please check the net (wifi/cell)!");
break;
case 66:
this.setLocTypeDescription("Offline location successful!");
break;
case 161:
this.setLocTypeDescription("NetWork location successful!");
break;
case 162:
this.setLocTypeDescription("NetWork location failed because baidu location service can not decrypt the request query, please check the so file !");
break;
case 167:
this.setLocTypeDescription("NetWork location failed because baidu location service can not caculate the location!");
break;
case 505:
this.setLocTypeDescription("NetWork location failed because baidu location service check the key is unlegal, please check the key in AndroidManifest.xml !");
break;
default:
this.setLocTypeDescription("UnKnown!");
}
}
可以看到道長的key是違法的,重新申請了一個key更換上就可以了
關於百度地圖的暫時到這裡,以後有新的內容再分享。希望這篇部落格能為你提供一些幫助
demo中的百度key由於某些原因去掉了,記得使用時要重新填寫!重新填寫!重新填寫!