android地图画线

package com.zeng.map_drawline; import java.util.ArrayList; import java.util.List; import android.content.Context; import android.graphics.Canvas; import android.graphics.Point; 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.ItemizedOverlay; import com.baidu.mapapi.MapController; import com.baidu.mapapi.MapView; import com.baidu.mapapi.Overlay; import com.baidu.mapapi.OverlayItem; import com.baidu.mapapi.Projection; /** * 继承ItemizedOverlay<OverlayItem> 或是Overlay，看情况了 * * 这个 只能弄出长按的效果， 若是说 地图上很多确定的点，点击某一个 弹出对应的东西，那就不好判断是哪一个点了。 不知道新的api是否有增加 * * @author zeng * */ public class LongClickOverlay extends Overlay implements OnDoubleTapListener, OnGestureListener { private GestureDetector gestureScanner = new GestureDetector(this); public static final int LONGPRESSINTERVAL = 1000; private Context mContext; float x = 0; float y = 0; // down - up 毫秒值 protected long time; // 是否longpress protected boolean isLongPress = false; 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 mapView) { x = arg0.getX(); y = arg0.getY(); switch (arg0.getAction()) { case MotionEvent.ACTION_DOWN: time = System.currentTimeMillis(); isLongPress = false; break; case MotionEvent.ACTION_UP: if (System.currentTimeMillis() - time > LONGPRESSINTERVAL) { isLongPress = true; } break; default: break; } return gestureScanner.onTouchEvent(arg0); } @Override public void onLongPress(MotionEvent e) { x = e.getX(); y = e.getY(); if (mContext instanceof Main) { ((Main) mContext).showPopupWindow((int) x, (int) y); } isLongPress = false; } @Override public boolean onTap(GeoPoint arg0, MapView mapView) { if (!isLongPress) return super.onTap(arg0, mapView); return true; } @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; } }