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我要讓谷歌地圖V2信息窗口是一種生活觀，讓我換SupportMapFragment自定義的RelativeLayout這樣的：dispatchTouchEvent觸發點擊事件不起作用？
R.layout.info_window：
<?xml version="1.0" encoding="utf-8"?>
<com.Amazing.GoogleMapV2.MapWrapperLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/map_relative_layout">
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment" />
</com.Amazing.GoogleMapV2.MapWrapperLayout>
我重寫dispatchTouchEvent，偏移motionEvent位置信息窗口視圖座標，然後向dispatchTouchEvent信息窗口： MapWrapperLayout：
public class MapWrapperLayout extends RelativeLayout {
/**
* Reference to a GoogleMap object
*/
private GoogleMap map;
/**
* Vertical offset in pixels between the bottom edge of our InfoWindow
* and the marker position (by default it's bottom edge too).
* It's a good idea to use custom markers and also the InfoWindow frame,
* because we probably can't rely on the sizes of the default marker and frame.
*/
private int bottomOffsetPixels;
/**
* A currently selected marker
*/
private Marker marker;
/**
* Our custom view which is returned from either the InfoWindowAdapter.getInfoContents
* or InfoWindowAdapter.getInfoWindow
*/
private View infoWindow;
public MapWrapperLayout(Context context) {
super(context);
}
public MapWrapperLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MapWrapperLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* Must be called before we can route the touch events
*/
public void init(GoogleMap map, int bottomOffsetPixels) {
this.map = map;
this.bottomOffsetPixels = bottomOffsetPixels;
}
/**
* Best to be called from either the InfoWindowAdapter.getInfoContents
* or InfoWindowAdapter.getInfoWindow.
*/
public void setMarkerWithInfoWindow(Marker marker, View infoWindow) {
this.marker = marker;
this.infoWindow = infoWindow;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
// Make sure that the infoWindow is shown and we have all the needed references
if (marker != null && marker.isInfoWindowShown() && map != null && infoWindow != null) {
// Get a marker position on the screen
Point point = map.getProjection().toScreenLocation(marker.getPosition());
// Make a copy of the MotionEvent and adjust it's location
// so it is relative to the infoWindow left top corner
MotionEvent copyEv = MotionEvent.obtain(ev);
copyEv.offsetLocation(
-point.x + (infoWindow.getWidth()/2),
-point.y + infoWindow.getHeight() + bottomOffsetPixels);
Log.e("~~~~~~~~~~dispatchTouchEvent copyEv", copyEv.toString());
//Dispatch the adjusted MotionEvent to the infoWindow
if (infoWindow.dispatchTouchEvent(copyEv)) {
Log.e("infoWindow.dispatchTouchEvent(copyEv)", "True");
Log.e("~~~~~~~~~~dispatchTouchEvent point", point.toString());
Log.e("~~~~~~~~~~dispatchTouchEvent ev", ev.toString());
Log.e("~~~~~~~~~~dispatchTouchEvent copyEv", copyEv.toString());
return true;
}
}
// If the infoWindow consumed the touch event, then just return true.
// Otherwise pass this event to the super class and return it's result
return super.dispatchTouchEvent(ev);
}
}
R.layout.info_window：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginRight="10dp">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="Title"/>
<TextView
android:id="@+id/snippet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="snippet"/>
</LinearLayout>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" android:clickable="true" android:enabled="true" android:focusable="true"
android:focusableInTouchMode="true"/>
</LinearLayout>
而且MainActivity膨脹R.layout.info_window和setOnClickListener到infoButton這是對info_window： MainActivity：
public class MainActivity extends SherlockFragmentActivity {
private ViewGroup infoWindow;
private TextView infoTitle;
private TextView infoSnippet;
private Button infoButton;
// private OnInfoWindowElemTouchListener infoButtonListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final SupportMapFragment mapFragment =
(SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map);
final MapWrapperLayout mapWrapperLayout =
(MapWrapperLayout)findViewById(R.id.map_relative_layout);
final GoogleMap map = mapFragment.getMap();
// MapWrapperLayout initialization
// 39 - default marker height
// 20 - offset between the default InfoWindow bottom edge and it's content bottom edge
mapWrapperLayout.init(map, getPixelsFromDp(this, 39 + 20));
// We want to reuse the info window for all the markers,
// so let's create only one class member instance
this.infoWindow = (ViewGroup)getLayoutInflater().inflate(R.layout.info_window, null);
this.infoTitle = (TextView)infoWindow.findViewById(R.id.title);
this.infoSnippet = (TextView)infoWindow.findViewById(R.id.snippet);
this.infoButton = (Button)infoWindow.findViewById(R.id.button);
// Setting custom OnTouchListener which deals with the pressed state
// so it shows up
// this.infoButtonListener = new OnInfoWindowElemTouchListener(infoButton,
// R.drawable.btn_normal, R.drawable.btn_pressed)
// {
// @Override
// protected void onClickConfirmed(View v, Marker marker) {
// // Here we can perform some action triggered after clicking the button
// Toast.makeText(MainActivity.this, marker.getTitle() + "'s button clicked!", Toast.LENGTH_SHORT).show();
// }
// };
this.infoButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainActivity.this, "~~~~~ Button clicked!", Toast.LENGTH_SHORT).show();
}
});
map.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
@Override
public View getInfoWindow(Marker marker) {
return null;
}
@Override
public View getInfoContents(Marker marker) {
// Setting up the infoWindow with current's marker info
infoTitle.setText(marker.getTitle());
infoSnippet.setText(marker.getSnippet());
// infoButtonListener.setMarker(marker);
// We must call this to set the current marker and infoWindow references
// to the MapWrapperLayout
mapWrapperLayout.setMarkerWithInfoWindow(marker, infoWindow);
return infoWindow;
}
});
// Let's add a couple of markers
map.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(50.08, 14.43)));
map.addMarker(new MarkerOptions()
.title("Prague")
.snippet("Czech Republic")
.position(new LatLng(50.08, 14.43)));
map.addMarker(new MarkerOptions()
.title("Paris")
.snippet("France")
.position(new LatLng(48.86,2.33)));
Marker m = map.addMarker(new MarkerOptions()
.title("London")
.snippet("United Kingdom")
.position(new LatLng(51.51,-0.1)));
m.showInfoWindow();
}
public static int getPixelsFromDp(Context context, float dp) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int)(dp * scale + 0.5f);
}
}
這些代碼行爲奇怪，按鈕的onClick將在活動onResume（）不立即致電時致電， 但onTouch事件立即致電。 爲什麼？