在一个图形页面的任意位置单击时,遇到了坐标 [英] Getting coordinates when clicking anywhere on a MapView
问题描述
我只是不能得到这个工作。我尝试使用下面onTouchEventand的code和它不工作。 如果我返回true,在方法结束时,我得到的坐标敬酒,但不能移动地图,如果我返回false,我可以移动地图,用户点击地图上后不能显示祝酒。如果我得到它的权利,其他方法的onTap仅用于点击一个覆盖。 有没有人想通了这thiing了呢?
公共布尔的onTouchEvent(MotionEvent为arg0,图形页面ARG1){
//super.onTouchEvent(arg0);
INT akcija = arg0.getAction();
如果(akcija == MotionEvent.ACTION_UP){
如果(!premik){
投影PROJ = MapView.getProjection()在;
的GeoPoint LOC = proj.fromPixels((int)的arg0.getX(),(int)的arg0.getY());
字符串Sirina酒店= Double.toString(loc.getLongitudeE6()/ 1000000);
字符串dolzina = Double.toString(loc.getLatitudeE6()/ 1000000);
烤面包烤面包= Toast.makeText(getApplicationContext(),Sirina酒店:+ Sirina酒店+Dolzina:+ dolzina,Toast.LENGTH_LONG);
toast.show();
}
}
否则,如果(akcija == MotionEvent.ACTION_DOWN){
premik = FALSE;
}
否则,如果(akcija == MotionEvent.ACTION_MOVE){
premik = TRUE;
}
返回false;
//返回super.onTouchEvent(为arg0);
}
使用dispatchTouchEvent()方法。有用。为什么?因为MapActivity继承dispatchTouch事件不会从活动课的onTouchEvent。检查这个文档
@覆盖
公共布尔dispatchTouchEvent(MotionEvent EV){
INT操作类型= ev.getAction();
开关(操作类型){
案例MotionEvent.ACTION_UP:
投影PROJ = MapView.getProjection()在;
的GeoPoint LOC = proj.fromPixels((int)的ev.getX(),(int)的ev.getY());
字符串经度= Double.toString(((双)loc.getLongitudeE6())/ 1000000);
字符串纬度= Double.toString(((双)loc.getLatitudeE6())/ 1000000);
烤面包烤面包= Toast.makeText(getApplicationContext(),经度:+经度+纬度:+纬度,Toast.LENGTH_LONG);
toast.show();
}
返回super.dispatchTouchEvent(EV);
}
I just cant get this working. I tried using the code below with onTouchEventand and it doesn't work. If i return true at the end of the method, i get the toast with the coordinates but can't move a map, and if i return false, i can move a map but cant display a toast after the user clicks on a map. If i get it right, the other onTap method is used only for clicking on a overlays. Has anybody figured this thiing out?
public boolean onTouchEvent(MotionEvent arg0, MapView arg1) {
//super.onTouchEvent(arg0);
int akcija = arg0.getAction();
if(akcija == MotionEvent.ACTION_UP){
if(!premik) {
Projection proj = mapView.getProjection();
GeoPoint loc = proj.fromPixels((int)arg0.getX(), (int)arg0.getY());
String sirina=Double.toString(loc.getLongitudeE6()/1000000);
String dolzina=Double.toString(loc.getLatitudeE6()/1000000);
Toast toast = Toast.makeText(getApplicationContext(), "Širina: "+sirina+" Dolzina: "+dolzina, Toast.LENGTH_LONG);
toast.show();
}
}
else if (akcija == MotionEvent.ACTION_DOWN){
premik= false;
}
else if (akcija== MotionEvent.ACTION_MOVE){
premik = true;
}
return false;
//return super.onTouchEvent(arg0);
}
use dispatchTouchEvent() method. it works. why because the MapActivity inherits the dispatchTouch Event not OnTouchEvent from Activity Class. check this documentation
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
int actionType = ev.getAction();
switch (actionType) {
case MotionEvent.ACTION_UP:
Projection proj = mapView.getProjection();
GeoPoint loc = proj.fromPixels((int)ev.getX(), (int)ev.getY());
String longitude = Double.toString(((double)loc.getLongitudeE6())/1000000);
String latitude = Double.toString(((double)loc.getLatitudeE6())/1000000);
Toast toast = Toast.makeText(getApplicationContext(), "Longitude: "+ longitude +" Latitude: "+ latitude , Toast.LENGTH_LONG);
toast.show();
}
return super.dispatchTouchEvent(ev);
}
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