Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2012 www.amsoft.cn
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.File;

import android.os.Environment;

public class Main {

    private static String downloadRootDir = null;

    public static boolean clearDownloadFile() {
        try {
            File fileDirectory = new File(downloadRootDir);
            deleteFile(fileDirectory);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    public static boolean deleteFile(File file) {

        try {
            if (!isCanUseSD()) {
                return false;
            }
            if (file == null) {
                return true;
            }
            if (file.isDirectory()) {
                File[] files = file.listFiles();
                for (int i = 0; i < files.length; i++) {
                    deleteFile(files[i]);
                }
            } else {
                file.delete();
            }

        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    public static boolean isCanUseSD() {
        try {
            return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
}