[置顶]Android高德地图显示气泡框

        现在的聊天框大多都是气泡框&＃xff0c;气泡框长相可爱&＃xff0c;有良好的用户体验。

        如何把气泡框应用于地图上呢&＃xff1f;

        步骤一&＃xff1a;首先要定义我们的气泡框布局&＃xff0c;也就是所谓的layout。

popup.xml:

其外观如图&＃xff1a;

    步骤二&＃xff1a;接着就是自定义我们的Overlay&＃xff0c;取名为MapPointOverlay:

/*** 地图点图层*/
public class MapPointOverlay extends Overlay {private LayoutInflater inflater; // 布局填充器private View popUpView; // 气泡框public MapPointOverlay(Context context) {inflater &＃61; (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); // 初始化布局填充器popUpView &＃61; inflater.inflate(R.layout.popup, null); // 初始化气泡框}&＃64;Overridepublic void draw(Canvas canvas, MapView mapView, boolean shadow) {super.draw(canvas, mapView, shadow);}&＃64;Overridepublic boolean onTap(final GeoPoint point, final MapView view) {if (popUpView !&＃61; null) {view.removeView(popUpView);}TextView textView &＃61; (TextView) popUpView.findViewById(R.id.location);String location &＃61; "纬度:" &＃43; point.getLatitudeE6() / 1.0E6 &＃43; ",经度:"&＃43; point.getLongitudeE6() / 1.0E6;textView.setText(location);MapView.LayoutParams lp;lp &＃61; new MapView.LayoutParams(MapView.LayoutParams.WRAP_CONTENT,MapView.LayoutParams.WRAP_CONTENT, point, 0, 0,MapView.LayoutParams.BOTTOM_CENTER);view.addView(popUpView, lp);return super.onTap(point, view);}}

   步骤三&＃xff1a; 最后是编写MapActivity:

public class MainActivity extends MapActivity {&＃64;Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);MapView mapView &＃61; (MapView) findViewById(R.id.main_mapView); // 获取mapView实例MapPointOverlay overlay &＃61; new MapPointOverlay(this); // 新建Overlay实例mapView.getOverlays().add(overlay); // 将Overlay添加到MapView图层上}
}

    另外别忘了相应的权限&＃xff1a;

    地图上显示气泡框的效果&＃xff1a;

    完整的Android项目包&＃xff1a;http://download.csdn.net/detail/czjuttsw/5217774