FileCache.java

package com.jacky.compatible.launcher.utils;

import android.content.Context;

import java.io.File;
import java.util.ArrayList;

public class FileCache {
    public File cacheDir;

    public FileCache(Context context) {
        if (android.os.Environment.getExternalStorageState().equals(
                android.os.Environment.MEDIA_MOUNTED)) {
            cacheDir = new File(
                    android.os.Environment.getExternalStorageDirectory(),
                    "WoDouCache");
        } else {
            cacheDir = context.getCacheDir();
        }
        if (!cacheDir.exists()) {
            cacheDir.mkdirs();
        }
    }

    public ArrayList<File> getFile() {
        File[] file = cacheDir.listFiles();
        ArrayList<File> list = new ArrayList<>();
        for (int i = 0; i < file.length; i++) {
            list.add(file[i]);
        }
        return list;
    }

    public String getCacheDir() {
        return cacheDir.toString();
    }

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

    public String getCacheSize() {
        long size = 0;
        if (cacheDir.exists()) {
            File[] files = cacheDir.listFiles();
            for (File f : files) {
                size += f.length();
            }
        }
        return String.valueOf(size / 1024 / 1024) + "M";
    }

}