Android 百度轨迹,多点实现自动缩放!

最新推荐文章于 2024-04-29 05:06:00 发布

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最新推荐文章于 2024-04-29 05:06:00 发布 · 671 阅读

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CC 4.0 BY-SA版权

本文详细介绍了如何在Android应用中利用百度地图API实现多点轨迹的展示，并通过代码自动调整地图缩放级别，确保所有轨迹点都能清晰可见。

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代码:

public class BaiduTrajectoryActivity extends AppCompatActivity implements View.OnClickListener {

    private static final String TAG = "BaiduTrajectoryActivity";
    private RelativeLayout mTitle_layout;
    private ImageView      mBack_image;
    private TextView       mTitle_text;
    private TextView       mMenu_text;

    public static final String STR = "STR ";
    private MapView             mMapView;
    private BaiduMap            mBaiduMap;
    private List<SharedBoxBean> list;
    private double               mCurrentLat = 0.000000;
    private double               mCurrentLon = 0.000000;
    private List<OverlayOptions> options     = new ArrayList<>();
    private List<LatLng>         points      = new ArrayList<>();
    private Polyline mPolyline;//折现

    private double        distance;//两点之间的距离
    private int           level;//地图缩放等级
    private List<Integer> colors;//设置折线的随机颜色

    private LatLng center;//地图中心点 坐标
    private double maxLatitude;//最大纬度
    private Double minLatitude;//最小纬度
    private double maxLongitude;//最大经度
    private double minLongitude;//最小经度
    private List<Double> latitudeList  = new ArrayList<>();//纬度的集合
    private List<Double> longitudeList = new ArrayList<>();//经度的集合

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        SDKInitializer.initialize(getApplicationContext());
        setContentView(R.layout.activity_baidu_trajectory);
        init();
    }

    protected void init() {
        initView();
        initData();
        initEvent();
    }

    //初始化视图
    protected void initView() {
        mMapView = (MapView) findViewById(R.id.map_view);
        mTitle_layout = (RelativeLayout) findViewById(R.id.ti