android调用外部导航(百度,高德)

高德 com.autonavi.minimap

百度 com.baidu.BaiduMap

百度 如果已安装跳转安装的程序 如果没有安装跳转网页版百度地图

private void openBaiduMap(double lon, double lat, String describle) {
try {
StringBuilder loc = new StringBuilder();
loc.append("intent://map/direction?origin=latlng:");
loc.append(latitude);
loc.append(",");
loc.append(longitude);
loc.append("|name:");
loc.append("我的位置");
loc.append("&destination=latlng:");
loc.append(lat);
loc.append(",");
loc.append(lon);
loc.append("|name:");
loc.append(describle);
loc.append("&mode=driving");
loc.append("&referer=Autohome|GasStation#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
Intent intent = Intent.getIntent(loc.toString());
if (isInstallPackage("com.baidu.BaiduMap")) {
startActivity(intent); //启动调用
Log.e("GasStation", "百度地图客户端已经安装");
} else {
LatLng ptMine = new LatLng(latitude, longitude);
LatLng ptPosition = new LatLng(lat, lon);

NaviParaOption para = new NaviParaOption()
.startPoint(ptMine)
.endPoint(ptPosition);
BaiduMapNavigation.openWebBaiduMapNavi(para, getApplicationContext());
}
} catch (Exception e) {
e.printStackTrace();
}
}

高德地图

private void openGaoDeMap(double lon, double lat, String title, String describle) {
try {
double[] gd_lat_lon = bdToGaoDe(lon, lat);
StringBuilder loc = new StringBuilder();
loc.append("androidamap://viewMap?sourceApplication=XX");
loc.append("&poiname=");
loc.append(describle);
loc.append("&lat=");
loc.append(gd_lat_lon[0]);
loc.append("&lon=");
loc.append(gd_lat_lon[1]);
loc.append("&dev=0");
Intent intent = Intent.getIntent(loc.toString());
startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
}

判断手机是否有app
private boolean isInstallPackage(String packageName) {
return new File("/data/data/" + packageName).exists();
}


GCJ-02 == BD-09 地图坐标系互转

private double[] bdToGaoDe(double bd_lat, double bd_lon) {
double[] gd_lat_lon = new double[2];
double PI = 3.14159265358979324 * 3000.0 / 180.0;
double x = bd_lon - 0.0065, y = bd_lat - 0.006;
double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * PI);
double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * PI);
gd_lat_lon[0] = z * Math.cos(theta);
gd_lat_lon[1] = z * Math.sin(theta);
return gd_lat_lon;
}

private double[] gaoDeToBaidu(double gd_lon, double gd_lat) {
double[] bd_lat_lon = new double[2];
double PI = 3.14159265358979324 * 3000.0 / 180.0;
double x = gd_lon, y = gd_lat;
double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * PI);
double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * PI);
bd_lat_lon[0] = z * Math.cos(theta) + 0.0065;
bd_lat_lon[1] = z * Math.sin(theta) + 0.006;
return bd_lat_lon;
}

调用
@OnClick({R.id.iv_go})
public void onViewClicked(View view) {
switch (view.getId()) {
case R.id.iv_go:
openBaiduMap(Double.parseDouble(lng), Double.parseDouble(lat), address);
break;

}
}