本文介绍了方法文档OnTouch在油漆覆盖（GOOGLEMAPS）？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我画一个覆盖在我的GOOGLEMAPS视图（闭合多边形，填充）。但现在我不知道该如何弹出一个敬酒的时候我就覆盖挖掘。最至极的例子，我发现工作，标志，看起来柠不同的到我的code。
主要活动：
公共类BOSLstItemDetail扩展MapActivity {
ArrayList的＆LT;＆HashMap的LT;弦乐，对象＆gt;＆GT; boslst;
MapView类MapView类;
MapController地图控件;
GeoPoint的磷;
多边形多边形; @覆盖
保护布尔isRouteDisplayed（）{
返回false;
} @覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.boslst_item_detail）; 字符串的坐标[] = {48.098056，9.788611};
双纬度= Double.parseDouble（坐标[0]）;
双经度= Double.parseDouble（坐标[1]）; P =新的GeoPoint（
（INT）（LAT * 1E6）
（INT）（LNG * 1E6））; MapView类MapView类=（图形页面）findViewById（R.id.mapview）;
地图控件= mapView.getController（）;
mapcontrol.animateTo（P）;
mapcontrol.setZoom（10）;
mapView.setBuiltInZoomControls（真）; ArrayList的＆LT;＆GeoPoint的GT;点=新的ArrayList＆LT;＆GeoPoint的GT;（）;
尝试{
InputStream的koord = getAssets（）开（gps.txt）;
如果（koord！= NULL）{
InputStreamReader中输入=新的InputStreamReader（koord）;
的BufferedReader buffreader =新的BufferedReader（输入）;
串线;
而（（行= buffreader.readLine（））！= NULL）{
串[] point_t = line.split（，）;
双Y = Double.parseDouble（point_t [0]）;
双X = Double.parseDouble（point_t [1]）;
points.add（新的GeoPoint（（int）的（X * 1e6个电子），（INT）（γ* 1e6个电子）））;
}
koord.close（）;
多边形=新的多边形（点）;
}
}赶上（例外五）{
Log.e（APP，失败，E）;
} 调用MapView.getOverlays（）清（）。
。调用MapView.getOverlays（）加（多边形）;
mapView.invalidate（）;
}
}
Polygon.java
公共类多边形扩展覆盖{
ArrayList的＆LT;＆GeoPoint的GT; geoPoints; 公共多边形（ArrayList的＆LT;＆GeoPoint的GT;点）{
geoPoints =分;
} @覆盖
公共无效画（油画画布，MapView类MapView类，布尔阴影）{
//设置颜色和样式
涂料粉刷=新的油漆（）;
paint.setColor（Color.parseColor（＃88ff0000））;
paint.setAlpha（50）;
paint.setStyle（Paint.Style.FILL_AND_STROKE）; //创建路径和加分
路径path =新路径（）;
点firstPoint =新点（）;
MapView.getProjection（）在toPixels（geoPoints.get（0），firstPoint）。
path.moveTo（firstPoint.x，firstPoint.y）; 的for（int i = 1; I＆LT; geoPoints.size（）; ++ I）{
NextPoint公司点=新点（）;
MapView.getProjection（）在toPixels（geoPoints.get（ⅰ），NextPoint公司）。
path.lineTo（nextPoint.x，nextPoint.y）;
} //关闭多边形
path.lineTo（firstPoint.x，firstPoint.y）;
path.setLastPoint（firstPoint.x，firstPoint.y）;
canvas.drawPath（路径，油漆）;
super.draw（画布，MapView类，阴影）; }
}
gps.txt：
9.34669876098644,48.2405319213867
9.36384963989269,48.2296714782715
9.3639497756958,48.2259712219238
9.87827968597418,48.2786293029785
9.87261867523205,48.2822494506837
9.87254810333263,48.2859611511232
9.88368034362787,48.2898597717285
9.8835382461549,48.2972793579102
9.72781181335461,47.9827613830566
9.72225093841558,47.9826812744141
9.72232818603527,47.9789619445801
9.71129894256597,47.9750900268555
9.70574092864985,47.9750099182129
9.70557022094732,47.9824409484864
9.69992923736572,47.9860801696778
9.69436073303234,47.9860000610352
9.33546066284174,48.2403602600099
9.34669876098644,48.2405319213867
解决方案
如果您正在扩展覆盖，可以覆盖ONTAP方式：
保护布尔中的onTap（最终诠释指数）
{
OverlayItem项目= mOverlays.get（指数）;
如果（项目！= NULL）{
Toast.makeText（mContext，textToShow，Toast.LENGTH_SHORT）.show（）;
}
//返回true，表示我们已经采取照顾它
返回true;
}
I paint a overlay on my googlemaps view (closed polygon, filled). But now I don't know how to pop up a toast when I tap on the overlay. The most examples wich I found work with marker and looks verry different to my code.
Main Activity:
public class BOSLstItemDetail extends MapActivity{
ArrayList<HashMap<String, Object>> boslst;
MapView mapView;
MapController mapcontrol;
GeoPoint p;
Polygon polygon;
@Override
protected boolean isRouteDisplayed() {
return false;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.boslst_item_detail);
String coordinates[] = {"48.098056", "9.788611"};
double lat = Double.parseDouble(coordinates[0]);
double lng = Double.parseDouble(coordinates[1]);
p = new GeoPoint(
(int) (lat * 1E6),
(int) (lng * 1E6));
MapView mapView = (MapView) findViewById(R.id.mapview);
mapcontrol = mapView.getController();
mapcontrol.animateTo(p);
mapcontrol.setZoom(10);
mapView.setBuiltInZoomControls(true);
ArrayList<GeoPoint> points = new ArrayList<GeoPoint>();
try{
InputStream koord = getAssets().open("gps.txt");
if (koord != null) {
InputStreamReader input = new InputStreamReader(koord);
BufferedReader buffreader = new BufferedReader(input);
String line;
while (( line = buffreader.readLine()) != null) {
String[] point_t = line.split(",");
double y = Double.parseDouble(point_t[0]);
double x = Double.parseDouble(point_t[1]);
points.add(new GeoPoint((int)(x*1e6), (int)(y*1e6)));
}
koord.close();
polygon = new Polygon(points);
}
}catch (Exception e) {
Log.e("APP","Failed", e);
}
mapView.getOverlays().clear();
mapView.getOverlays().add(polygon);
mapView.invalidate();
}
}
Polygon.java
public class Polygon extends Overlay {
ArrayList<GeoPoint> geoPoints;
public Polygon(ArrayList<GeoPoint> points){
geoPoints = points;
}
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow){
//Set the color and style
Paint paint = new Paint();
paint.setColor(Color.parseColor("#88ff0000"));
paint.setAlpha(50);
paint.setStyle(Paint.Style.FILL_AND_STROKE);
//Create path and add points
Path path = new Path();
Point firstPoint = new Point();
mapView.getProjection().toPixels(geoPoints.get(0), firstPoint);
path.moveTo(firstPoint.x, firstPoint.y);
for(int i = 1; i < geoPoints.size(); ++i){
Point nextPoint = new Point();
mapView.getProjection().toPixels(geoPoints.get(i), nextPoint);
path.lineTo(nextPoint.x, nextPoint.y);
}
//Close polygon
path.lineTo(firstPoint.x, firstPoint.y);
path.setLastPoint(firstPoint.x, firstPoint.y);
canvas.drawPath(path, paint);
super.draw(canvas, mapView, shadow);
}
}
gps.txt:
9.34669876098644,48.2405319213867
9.36384963989269,48.2296714782715
9.3639497756958,48.2259712219238
9.87827968597418,48.2786293029785
9.87261867523205,48.2822494506837
9.87254810333263,48.2859611511232
9.88368034362787,48.2898597717285
9.8835382461549,48.2972793579102
9.72781181335461,47.9827613830566
9.72225093841558,47.9826812744141
9.72232818603527,47.9789619445801
9.71129894256597,47.9750900268555
9.70574092864985,47.9750099182129
9.70557022094732,47.9824409484864
9.69992923736572,47.9860801696778
9.69436073303234,47.9860000610352
9.33546066284174,48.2403602600099
9.34669876098644,48.2405319213867
解决方案
If you're extending Overlay, you can override the OnTap method:
protected boolean onTap(final int index)
{
OverlayItem item = mOverlays.get(index);
if(item != null){
Toast.makeText(mContext, textToShow, Toast.LENGTH_SHORT).show();
}
//return true to indicate we've taken care of it
return true;
}
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