缓存网络图片 以及流接受图片
1. 保存在sdcard 首先不要忘记权限
?//First create a new URL object ?
URL url = new URL("http://www.google.co.uk/logos/holiday09_2.gif")?
?
//Next create a file, the example below will save to the SDCARD using JPEG format?
File file = new File("/sdcard/example.jpg");?
?
//Next create a Bitmap object and download the image to bitmap?
Bitmap bitmap = BitmapFactory.decodeStream(url.openStream());?
?
//Finally compress the bitmap, saving to the file previously created?
bitmap.compress(CompressFormat.JPEG, 100, new FileOutputStream(file));?
?
2.使用Collection(HashMap,List etc.)? 你必须使用java.lang.ref.SoftReference specifically 如果你的图片很大
HashMap<String,SoftReference<Bitmap>> imageCache =?
? ? ? ? new HashMap<String,SoftReference<Bitmap>>();?
