FileCache.java

package com.mzba.fresco.utils.cache;

/**
 * Created by 06peng on 2015-07-03.
 */

import android.content.Context;

import java.io.File;

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(), "fresco_cache");
        } else {
            cacheDir = context.getCacheDir();
        }
        if (!cacheDir.exists()) {
            cacheDir.mkdirs();
        }
    }

    public File getCacheDir() {
        return cacheDir;
    }

    public File getFile(String url) {
        String filename = String.valueOf(url.hashCode());
        File f = new File(cacheDir, filename);
        if (f.exists()) {
            return f;
        }
        return null;
    }

    public void clear() {
        File[] files = cacheDir.listFiles();
        if (files == null) {
            return;
        }
        for (File f : files) {
            f.delete();
        }
    }
}