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- package com.samir;
- import java.io.File;
- import android.content.Context;
- public class FileCache {
- private File cacheDir;
- public FileCache(Context context){
- //Find the dir to save cached images
- if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
- cacheDir=new File(android.os.Environment.getExternalStorageDirectory(),"LazyList");
- else
- cacheDir=context.getCacheDir();
- if(!cacheDir.exists())
- cacheDir.mkdirs();
- }
- public File getFile(String url){
- //I identify images by hashcode. Not a perfect solution, good for the demo.
- String filename=String.valueOf(url.hashCode());
- //Another possible solution (thanks to grantland)
- //String filename = URLEncoder.encode(url);
- File f = new File(cacheDir, filename);
- return f;
- }
- public void clear(){
- File[] files=cacheDir.listFiles();
- if(files==null)
- return;
- for(File f:files)
- f.delete();
- }
- }
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