百度地图上的气泡

<p><img alt="" src="https://img-my.youkuaiyun.com/uploads/201205/09/1336566928_8704.jpg" /></p>package com.ui.overlay;


import android.content.Context;
import android.graphics.Canvas;
import android.view.GestureDetector;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;


import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.MapView;
import com.baidu.mapapi.Overlay;
import com.ui.ShowMap;


public class LongClickOverlay extends Overlay implements OnDoubleTapListener, OnGestureListener {


private GestureDetector gestureScanner = new GestureDetector(this);
private Context mContext;
float x = 0;
float y = 0;


public LongClickOverlay(Context context) {
this.mContext = context;
}


@Override
public void draw(Canvas canvas, MapView mapView, boolean arg2) {
// TODO Auto-generated method stub
super.draw(canvas, mapView, arg2);
}


@Override
public boolean onTouchEvent(MotionEvent arg0, MapView arg1) {


return gestureScanner.onTouchEvent(arg0);
}


@Override
public void onLongPress(MotionEvent e) {
x = e.getX();
y = e.getY();
if (mContext instanceof ShowMap) {
((ShowMap) mContext).ShowPopuWindow((int) x, (int) y);
// ShowMap showMap = (ShowMap) mContext;
// MapView.LayoutParams geoLP = (MapView.LayoutParams)
// showMap.popView.getLayoutParams();
// geoLP.point = p;
// showMap.mapView.updateViewLayout(showMap.popView, geoLP);
// ((ShowMap) mContext).popView.setVisibility(View.VISIBLE);
}


}


@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}


@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub


}


@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onDoubleTap(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onDoubleTapEvent(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}


@Override
public boolean onTap(GeoPoint arg0, MapView arg1) {
return super.onTap(arg0, arg1);
}


}

1. // 弹出窗口  
2.         popView = getLayoutInflater().inflate(R.layout.popview, null);  
3.         mapView.addView(popView, new MapView.LayoutParams(MapView.LayoutParams.WRAP_CONTENT,  
4.                 MapView.LayoutParams.WRAP_CONTENT, null, MapView.LayoutParams.BOTTOM_CENTER));  
5.         popView.setVisibility(View.GONE);  
6.           
7.         public void ShowPopuWindow(int x ,int y){  
8.             GeoPoint p =mapView.getProjection().fromPixels(x, y);  
9.             MapView.LayoutParams geoLP = (MapView.LayoutParams) popView.getLayoutParams();  
10.             geoLP.point = p;  
11.             mapView.updateViewLayout(popView, geoLP);  
12.             popView.setVisibility(View.VISIBLE);  
13.             mapView.invalidate();  
14.         }