一， 在地圖上添加pushpin :
public Marker addMarker( LatLng position )
{
Marker marker = null;
GoogleMap map = supportMapFragment.getMap( );
if ( map != null )
{
MarkerOptions options = new MarkerOptions( );
BitmapDescriptor icon = BitmapDescriptorFactory.fromResource( R.drawable.marker );
options.icon( icon );
options.position( position );
marker = map.addMarker( options );
}
return marker;
}
（1），通過實作GoogleMap的InfoWindowAdapter來設定Marker的上的氣泡：
public void setMapInfoWindowAdapter( )
{
GoogleMap map = supportMapFragment.getMap( );
if ( map == null )
{
return;
}
map.setInfoWindowAdapter( new InfoWindowAdapter( )
{
@Override
public View getInfoWindow( Marker arg0 )
{
return null;
}
@Override
public View getInfoContents( Marker arg0 )
{
return null;
}
} );
}
（2），通過Marker.showInfoWindow( ) 可以顯示pushpin上的詳細資訊氣泡，或者點選marker地圖自己顯示以上的InfoWindow。
（3），點選infowindow的點選事件是GoogleMap.setOnInfoWindowClickListener。
（4），也可以實作GoogleMap.setOnMarkerClickListener來點選Marker後的動作。
（5），值得一提的是，根據Google官方文檔的說明：在實作setInfoWindowAdapter的要注意getInfoWindow和getInfoContents的差別
(getInfoWindow()) allows you to provide a view that will be used for the entire info window.
(getInfoContents()) allows you to just customize the contents of the window but still keep the default info window frame and background.
getInfoWindow是完全自定義氣泡樣式的方法，而getInfoContents的隻能添加内容，不能改變infowindow的最外層樣式。
（6），最後就是帶有Button的infowindow了，這個google并沒有提供方法，是以得自己去想辦法實作了。具體方法如下：
自定義ViewGroup, 重寫dispatchTouchEvent 截獲infowindow的點選事件：
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) {
boolean ret = false;
// 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);
// Dispatch the adjusted MotionEvent to the infoWindow
ret = infoWindow.dispatchTouchEvent(copyEv);
copyEv.recycle();
}
// 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 ret || super.dispatchTouchEvent(ev);
}
}
當infowindow的Button點選是觸發以下listener.
public abstract class OnInfoWindowElemTouchListener implements OnTouchListener {
private final View view;
private final Drawable bgDrawableNormal;
private final Drawable bgDrawablePressed;
private final Handler handler = new Handler();
private Marker marker;
private boolean pressed = false;
public OnInfoWindowElemTouchListener(View view, Drawable bgDrawableNormal,
Drawable bgDrawablePressed) {
this.view = view;
this.bgDrawableNormal = bgDrawableNormal;
this.bgDrawablePressed = bgDrawablePressed;
}
public void setMarker(Marker marker) {
this.marker = marker;
}
@Override
public boolean onTouch(View v, MotionEvent event) {
float x = event.getX();
float y = event.getY();
if (0 <= x && x <= view.getWidth() && 0 <= y && y <= view.getHeight()) {
switch (event.getAction()) {
// We need to delay releasing of the view a little so it shows the
// pressed state on the
// screen
case MotionEvent.ACTION_DOWN:
startPress();
handler.postDelayed(performClickRunnable, ViewConfiguration.getTapTimeout());
break;
case MotionEvent.ACTION_UP:
handler.postDelayed(performClickRunnable, ViewConfiguration.getTapTimeout());
break;
case MotionEvent.ACTION_CANCEL:
endPress();
break;
default:
break;
}
} else {
// If the touch goes outside of the view's area
// (like when moving finger out of the pressed button)
// just release the press
endPress();
}
return false;
}
private void startPress() {
if (!pressed) {
pressed = true;
handler.removeCallbacks(performClickRunnable);
view.setBackgroundDrawable(bgDrawablePressed);
if (marker != null)
marker.showInfoWindow();
}
}
private boolean endPress() {
if (pressed) {
this.pressed = false;
handler.removeCallbacks(performClickRunnable);
view.setBackgroundDrawable(bgDrawableNormal);
if (marker != null)
marker.showInfoWindow();
return true;
} else
return false;
}
private final Runnable performClickRunnable = new Runnable() {
public void run() {
if (endPress()) {
onClickConfirmed(view, marker);
}
}
};
/**
* This is called after a successful click
*/
protected abstract void onClickConfirmed(View v, Marker marker);
}
Activity的布局檔案：
<com.circlegate.tt.cg.an.lib.map.MapWrapperLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map_relative_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</com.circlegate.tt.cg.an.lib.map.MapWrapperLayout>
測試Activity:
public class MainActivity extends Activity {
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.activity_main);
final MapFragment mapFragment = (MapFragment)getFragmentManager().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,
getResources().getDrawable(R.drawable.btn_default_normal_holo_light),
getResources().getDrawable(R.drawable.btn_default_pressed_holo_light))
{
@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.setOnTouchListener(infoButtonListener);
map.setInfoWindowAdapter(new 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.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)));
map.addMarker(new MarkerOptions()
.title("London")
.snippet("United Kingdom")
.position(new LatLng(51.51,-0.1)));
}
public static int getPixelsFromDp(Context context, float dp) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int)(dp * scale + 0.5f);
}
}
好了，infowindow裡面的button的點選事件可以觸發了。
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