List<OverlayItem> clusters=mCluster.createCluster(mMarkers);
itemOverlay.removeAll();
for(int i=0;i<clusters.size();i++){//以聚合物的总数量作为最外层循环
int z=0,num_photo=0;
Cursor cursorFirstPhoto;
String location="",first_photo="";
GeoPoint markGeo=clusters.get(i).getPoint();//聚合物的中心点
ArrayList <GeoPoint> geoP=new ArrayList<GeoPoint>();
Bounds bound = new Bounds(markGeo.getLatitudeE6(),markGeo.getLongitudeE6(),markGeo.getLatitudeE6(),markGeo.getLongitudeE6());
bound=MapUtils.getExtendedBounds(mMapView,bound,mGridSize);
for(int j=0;j<mMarkers.size();j++){//以点的总个数作为内层循环
if(mCluster.isMarkersInCluster(mMarkers.get(j).getPoint(),bound)){//判断一个点是否处于该聚合物中 geoP.add(mMarkers.get(j).getPoint());
ArrayList<String>name=new ArrayList<String>();
double longitude=(mMarkers.get(j).getPoint().getLongitudeE6())/10E5;
double latitude=(mMarkers.get(j).getPoint().getLatitudeE6())/10E5;
Cursor cursor=dbM.queryByLocation(longitude,latitude);
cursor.moveToFirst();
String photos=cursor.getString(cursor.getColumnIndex("photo_id"));
cursorFirstPhoto=dbM.query(photos);
String lo=cursorFirstPhoto.getString(cursorFirstPhoto.getColumnIndex("location"));
for(cursor.moveToFirst();!(cursor.isAfterLast());cursor.moveToNext()){
String photo_name=cursor.getString(cursor.getColumnIndex("photo_id"));
name.add(photo_name); num_photo++;
}
z++;
}
}
}
@H_404_0@用以上方法就可以获得某个标注物中照片名称的集合。
@H_404_0@---------------Cluster类中的createCluster(List<OverlayItem> markerList)函数和setClusterDrawable(ClusterMarker clusterMarker)函数修改---------------
public ArrayList<OverlayItem> createCluster(List<OverlayItem> markerList){
this.mClusterMarkers.clear();
ArrayList<OverlayItem> itemList = new ArrayList<OverlayItem>();
for(int i=0;i<markerList.size();i++){
addCluster(markerList.get(i));
}
for(int i=0;i<mClusterMarkers.size();i++){
ClusterMarker cm=mClusterMarkers.get(i);
double longitude=cm.getPoint().getLongitudeE6()/10E5;
double latitude=cm.getPoint().getLatitudeE6()/10E5;
DBManager dbM=new DBManager();
Cursor cursor=dbM.queryByFirstPhoto(longitude,latitude);
cursor.moveToFirst();
String first_photo=cursor.getString(cursor.getColumnIndex("photo_id"));
setClusterDrawable(cm,first_photo);
OverlayItem oi = new OverlayItem(cm.getmCenter(),cm.getTitle(),cm.getSnippet());
oi.setMarker(cm.getMarker());
itemList.add(oi);
}
return itemList;
}
@H_404_0@注明： @H_404_0@DBManger类：对sqlite数据库操作的类。 @H_404_0@queryByFirstPhoto(double longitude,double latitude)函数为根据经纬度查询第一张照片的名称。
private void setClusterDrawable(ClusterMarker clusterMarker,String image){
View drawableView=LayoutInflater.from(context).inflate(R.layout.drawable_mark,null);
TextView text=(TextView)drawableView.findViewById(R.id.drawble_mark);
DBManager dbM=new DBManager();
Cursor cursorFirstPhoto=dbM.query(image);
String lo=cursorFirstPhoto.getString(cursorFirstPhoto.getColumnIndex("location"));
System.out.println("2020002020202"+lo);
String image_path=Environment.getExternalStorageDirectory().getPath()+ "/"+"traveljournal/"+lo+"/"+image;
ImageSpan imgSpan = new ImageSpan(getFirstImage(image_path));
SpannableString spanString = new SpannableString("icon");
spanString.setSpan(imgSpan,4,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setText(spanString);
Bitmap bitmap = MapUtils.convertViewToBitmap(drawableView);
clusterMarker.setMarker(new BitmapDrawable(bitmap));
}
@H_404_0@ImageSpan imgSpan = new ImageSpan(getFirstImage(image_path));
@H_404_0@SpannableString spanString = new SpannableString("icon");
@H_404_0@spanString.setSpan(imgSpan,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
@H_404_0@text.setText(spanString);
@H_404_0@以上四行代码可以实现在textview中显示图片。
@H_404_0@public Bitmap getFirstImage(String path){
Bitmap b=null;
try {
InputStream is = new FileInputStream(path);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Config.ARGB_8888;
options.inJustDecodeBounds = false;
options.inSampleSize = 2;
b = BitmapFactory.decodeStream(is,null,options);
int width = b.getWidth();
int height = b.getHeight();
// 根据自己的需要设置照片的大小
int newWidth = 200;
int newHeight = 200;
// 计算缩放比例
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// 取得想要缩放的matrix参数
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth,scaleHeight);
// 得到新的图片
b = Bitmap.createBitmap(b,width,height,matrix,true);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return b;
}
@H_404_0@这个函数可以实现根据路径获得照片。@H_404_0@根据自己的项目修改小细节的部分就不说啦。 原文链接：https://www.f2er.com/javaschema/285446.html
