在google 地图弹出气泡

在google地图上定位一个地点，然后点击弹出一个popView显示一下详细信息
这个popView 随便整的，没有美化练着玩的

Android专业开发群1：150086842

Android专业开发群2：219277004

标签： <无>

代码片段(5)

[图片] 未命名3.jpg

[图片] 未命名4.jpg

[代码] 新建一个图层

01	package com.android.angking.yibai;

02

03	import java.util.ArrayList;

04

05	import android.content.Context;

06	import android.graphics.Canvas;

07	import android.graphics.Color;

08	import android.graphics.Paint;

09	import android.graphics.Point;

10	import android.graphics.drawable.Drawable;

11

12	import com.google.android.maps.ItemizedOverlay;

13	import com.google.android.maps.MapView;

14	import com.google.android.maps.OverlayItem;

15	import com.google.android.maps.Projection;

16

17	public classCustomItemizedOverlay extendsItemizedOverlay<OverlayItem>{

18	privateArrayList<OverlayItem> mOverlays = newArrayList<OverlayItem>();

19	privateContext context;

20	publicCustomItemizedOverlay(Context context,Drawable defaultMarker){

21	super(boundCenterBottom(defaultMarker));

22	this.context = context;

23

}

24	publicvoid draw(Canvas canvas,MapView mapView,booleanshadow){

25	super.draw(canvas, mapView, shadow);

26	//Projection 接口用于屏幕像素点坐标体系和地球概况纬度点坐标体系之间的变换

27	Projection projection = mapView.getProjection();

28	//遍历所有的OverlayItem

29	for(intindex = this.size()-1;index>=0;index--){

30	//获得给定索引的item

31	OverlayItem overlayItem = getItem(index);

32	//把经纬度变换相对于MapView左上角的屏幕像素坐标

33	Point point = projection.toPixels(overlayItem.getPoint(),null);

34

35	Paint paintText =new Paint();

36	paintText.setColor(Color.RED);

37	paintText.setTextSize(13);

38

//绘制文本

39	canvas.drawText(overlayItem.getTitle(), point.x+10, point.y-15, paintText);

40

}

41

}

42	protectedboolean onTap(intindex){

43	setFocus(mOverlays.get(index));

44	returnsuper.onTap(index);

45

46

}

47	publicvoid removeAll(){

48	if(mOverlays.size()>=0){

49	mOverlays.removeAll(mOverlays);

50

}

51

}

52	publicvoid addOverlay(OverlayItem overlay){

53	mOverlays.add(overlay);

54	populate();

55

}

56	//  public CustomItemizedOverlay(Drawable defaultMarker) {

57	//      super(boundCenterBottom(defaultMarker));

58	//      // TODO Auto-generated constructor stub

59

//  }

60

61

@Override

62	protectedOverlayItem createItem(inti) {

63	// TODO Auto-generated method stub

64	returnmOverlays.get(i);

65

}

66

67

@Override

68	publicint size() {

69	// TODO Auto-generated method stub

70	returnmOverlays.size();

71

}

72

73

74

}

[代码] 自定义的OverlayItem

01	package com.android.yibai.antking;

02

03	import android.graphics.Bitmap;

04

05	import com.google.android.maps.GeoPoint;

06	import com.google.android.maps.OverlayItem;

07

08	public classMyOverlayItem extends OverlayItem{

09	privateBitmap bitmap;

10	publicMyOverlayItem(GeoPoint point, String title, String snippet,Bitmap bitmap) {

11	super(point, title, snippet);

12	this.bitmap = bitmap;

13	// TODO Auto-generated constructor stub

14

}

15	public Bitmap getBitmap(){

16	returnbitmap;

17

}

18

19

}

[代码] 主类

001	package com.android.yibai.antking;

002

003	import java.util.List;

004

005	import android.graphics.Bitmap;

006	import android.graphics.BitmapFactory;

007	import android.graphics.drawable.Drawable;

008	import android.os.Bundle;

009	import android.view.View;

010	import android.widget.ImageView;

011	import android.widget.TextView;

012

013	import com.google.android.maps.GeoPoint;

014	import com.google.android.maps.ItemizedOverlay;

015	import com.google.android.maps.MapActivity;

016	import com.google.android.maps.MapView;

017	import com.google.android.maps.Overlay;

018	import com.google.android.maps.OverlayItem;

019

020	public classMapMain extends MapActivity{

021

/**

022

* 地图

023

*/

024	protectedMapView mapView;

025

/**

026	* 弹出的气泡View

027

*/

028	privateView popView;

029

030	privateint[] image={R.drawable.icon};

031

032	publicvoid onCreate(Bundle savedInstanceState) {

033	super.onCreate(savedInstanceState);

034

035	//初始化气泡，并设置为不可见

036	popView = View.inflate(this, R.layout.popview,null);

037	setContentView(R.layout.main);

038

039

//获得map

040	mapView = (MapView)this.findViewById(R.id.mapview);

041	mapView.addView(popView,newMapView.LayoutParams(

042	MapView.LayoutParams.WRAP_CONTENT,

043	MapView.LayoutParams.WRAP_CONTENT,null

044	,MapView.LayoutParams.BOTTOM_CENTER));

045	//这里没有给GeoPoint ,在onFoucusChangeListener中设置

046	popView.setVisibility(View.GONE);

047

/**

048	* 创建图标资料（用于显示在overlayItem所表示表记的地位

049

*/

050	Drawable drawable =this.getResources().getDrawable(R.drawable.icon);

051

052	//为mark定以地位和鸿沟

053	drawable.setBounds(0,0,drawable.getIntrinsicWidth(),

054	drawable.getIntrinsicHeight());

055	CustomItemizedOverlay overlay =new CustomItemizedOverlay(this,drawable);

056	//设置显示/隐藏气泡的位置

057	overlay.setOnFocusChangeListener(onFocusChangeListener);

058

059

/**

060	* 创建并添加一个标志

061

*/

062	GeoPoint point =new GeoPoint(35422006,119524095);

063

//创建标识

064	Bitmap bitmap = BitmapFactory.decodeResource(MapMain.this.getResources(), R.drawable.psu);

065	MyOverlayItem overlayItem =new MyOverlayItem(point

066	,"银河公园","这是一个充满神奇的公园，一步一景，我去的时候有一种柳暗花明又一村的感觉",bitmap);

067	overlay.addOverlay(overlayItem);

068

/**

069

* 创建第二个标识

070

*/

071	Bitmap bitmap1 = BitmapFactory.decodeResource(this.getResources(), R.drawable.icon);

072	GeoPoint point1 =new GeoPoint((int)(22.53108*1E6),(int)(113.99151*1E6));

073	MyOverlayItem overlayItem1 =new MyOverlayItem(point1,"秀丽中华","中国最好的旅游胜地之一",bitmap1);

074	overlay.addOverlay(overlayItem1);

075

076	//向地图里添加自定义的ItemizedOverlay

077	List<Overlay> mapOverlays =mapView.getOverlays();

078	mapOverlays.add(overlay);

079	//设置地图为卫星地图

080	mapView.setSatellite(true);

081	//设置地图可以缩放

082	mapView.setBuiltInZoomControls(true);

083

/**

084	* 取得地图管理对象，用于把握地图

085

*

086

*/

087

//设置地图的中间

088	mapView.getController().setCenter(point);

089	//设置地图默认的缩放级别

090	mapView.getController().setZoom(13);

091

092

}

093

@Override

094	protectedboolean isRouteDisplayed() {

095	// TODO Auto-generated method stub

096	returnfalse;

097

}

098	privatefinal ItemizedOverlay.OnFocusChangeListener onFocusChangeListener =new ItemizedOverlay.OnFocusChangeListener() {

099

100

@Override

101	publicvoid onFocusChanged(ItemizedOverlay overlay, OverlayItem newFocus) {

102	// TODO Auto-generated method stub

103

//创建气泡窗口

104	if(popView!=null){

105	popView.setVisibility(View.GONE);

106

}

107	if(newFocus !=null){

108	MapView.LayoutParams geoLp =(MapView.LayoutParams) popView

109	.getLayoutParams();

110	geoLp.point = newFocus.getPoint();//这行用于popView的定位

111	TextView title = (TextView)popView.findViewById(R.id.map_bubbleTitle);

112	title.setText(newFocus.getTitle());

113

114	TextView desc = (TextView)popView.findViewById(R.id.map_bubbleText);

115	ImageView image = (ImageView)popView.findViewById(R.id.map_bubbleImage);

116	image.setImageBitmap(((MyOverlayItem) newFocus).getBitmap());

117	if(newFocus.getSnippet()==null

118	||newFocus.getSnippet().length()==0){

119	desc.setVisibility(View.GONE);

120

}else{

121	desc.setVisibility(View.VISIBLE);

122	desc.setText(newFocus.getSnippet());

123

}

124	mapView.updateViewLayout(popView,geoLp);

125	popView.setVisibility(View.VISIBLE);

126

}

127

}

128

129

130

};

131

132

}