/**
* @param placeNameServiceSet the set of PlaceNameService objects that PlaceNameLayer will render.
* @throws IllegalArgumentException if {@link
* gov.nasa.worldwind.layers.placename.PlaceNameServiceSet} is null
*/
public PlaceNameLayer(PlaceNameServiceSet placeNameServiceSet) {
if (placeNameServiceSet == null) {
String message = Logging.getMessage("nullValue.PlaceNameServiceSetIsNull");
Logging.logger().fine(message);
throw new IllegalArgumentException(message);
}
//
this.placeNameServiceSet = placeNameServiceSet.deepCopy();
for (int i = 0; i < this.placeNameServiceSet.getServiceCount(); i++) {
// todo do this for long as well and pick min
int calc1 =
(int)
(PlaceNameService.TILING_SECTOR.getDeltaLatDegrees()
/ this.placeNameServiceSet
.getService(i)
.getTileDelta()
.getLatitude()
.getDegrees());
int numLevels = (int) Math.log(calc1);
navTiles.add(
new NavigationTile(
this.placeNameServiceSet.getService(i),
PlaceNameService.TILING_SECTOR,
numLevels,
"top"));
}
if (!WorldWind.getMemoryCacheSet().containsCache(Tile.class.getName())) {
long size = Configuration.getLongValue(AVKey.PLACENAME_LAYER_CACHE_SIZE, 2000000L);
MemoryCache cache = new BasicMemoryCache((long) (0.85 * size), size);
cache.setName("Placename Tiles");
WorldWind.getMemoryCacheSet().addCache(Tile.class.getName(), cache);
}
}
/**
* 最主要的方法
*
* @param url
* @param imageView
* @param requiredSize 裁剪图片大小尺寸（一直裁剪到图片宽或高 至少有一个小与requiredSize的时候）
* @param listener
* @param defaultPicResId
*/
public void displayImage(
String url,
ImageView imageView,
int requiredSize,
OnImageLoaderListener listener,
int defaultPicResId) {
imageViews.put(imageView, url);
// 先从内存缓存中查找
Bitmap bitmap = memoryCache.get(url);
if (bitmap != null) {
imageView.setImageBitmap(bitmap);
if (null != listener) {
listener.onFinishedImageLoader(imageView, bitmap); // 通知完成加载
}
} else {
// 如果defaultPicResId小于0，则不设置默认图片
if (defaultPicResId < 0) {
queuePhoto(url, imageView, requiredSize, listener);
return;
}
/**
* 如果defaultPicResId等于0，则设置默认图片为config中的默认图片，并开启新线程加载真实需要的图片
* 如果defaultPicResId大于0，则设置默认图片为指定的默认图片，并开启新线程加载真实需要的图片
*/
if (defaultPicResId == 0) {
defaultPicResId = config.getDefaultResId();
}
imageView.setImageResource(defaultPicResId);
queuePhoto(url, imageView, requiredSize, listener);
}
}
public void DisplayImage(String url, int loader, ImageView imageView) {
defaultResId = loader;
imageViews.put(imageView, url);
Bitmap bitmap = memoryCache.get(url);
if (bitmap != null) imageView.setImageBitmap(bitmap);
else {
PhotoToLoad photoToLoad = new PhotoToLoad(url, imageView);
photoToLoad.imageView.setImageResource(loader);
new AsyncTask<PhotoToLoad, Void, Bitmap>() {
private PhotoToLoad pt;
@Override
protected Bitmap doInBackground(PhotoToLoad... params) {
pt = params[0];
if (imageViewReused(pt)) return null;
Bitmap bitmap = null;
// from SD cache
File f = fileCache.getFile(pt.url);
try {
bitmap = BitmapFactory.decodeStream(new FileInputStream(f));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if (bitmap != null) return bitmap;
// from web
try {
URL imageUrl = new URL(pt.url);
HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(f);
Utils.CopyStream(is, os);
os.close();
bitmap = BitmapFactory.decodeStream(new FileInputStream(f));
return bitmap;
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
@Override
protected void onPostExecute(Bitmap bitmap) {
memoryCache.put(pt.url, bitmap);
if (imageViewReused(pt)) return;
BitmapDisplayer bd = new BitmapDisplayer(bitmap, pt);
Activity a = (Activity) pt.imageView.getContext();
a.runOnUiThread(bd);
}
}.execute(photoToLoad);
}
}
public void DisplayImage(String url, int loader, ImageView imageView) {
stub_id = loader;
imageViews.put(imageView, url);
Bitmap bitmap = memoryCache.get(url);
if (bitmap != null) imageView.setImageBitmap(bitmap);
else {
queuePhoto(url, imageView);
imageView.setImageResource(loader);
}
}
public void clearMemoryCache() {
memoryCache.clear();
}
/** 清空文件缓存或内存缓存 */
public void clearCache() {
memoryCache.clear();
fileCache.clear();
}