AppUtil.java

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Environment;

import com.xindeguo.activity.App.MyApplication;
import com.xindeguo.activity.logic.data.SharedManager;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;


/**
 * 全部app配置
 *
 * @author Administrator
 */
public class AppUtil {

    public static boolean tab01Reload = false;

    public static boolean tab02Reload = false;

    public static boolean tab03Reload = false;

    public static Activity currentInstance = null;

    /**
     * 完成跳转后的下一个界面完成之后，是否需要直接关闭
     */
    public static boolean INPUT_COMPLETE_FINISH = false;

    /**
     * 指定首页显示的默认index－－fragment界面
     */
    public static int ZhidingIndex = 0;

    public static int tab02SubItemIndex = 0;

    // 根据byte数组，生成文件
    public static void getFile(byte[] bfile, String filePath, String fileName) {
        BufferedOutputStream bos = null;
        FileOutputStream fos = null;
        File file = null;
        try {
            File dir = new File(filePath);
            if (!dir.exists() && dir.isDirectory()) {// 判断文件目录是否存在
                dir.mkdirs();
            }
            file = new File(filePath + "\\" + fileName);
            fos = new FileOutputStream(file);
            bos = new BufferedOutputStream(fos);
            bos.write(bfile);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (bos != null) {
                try {
                    bos.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            }
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            }
        }
    }

    /**
     * 下载apk文件
     *
     * @param path
     * @param pd
     * @return
     * @throws Exception
     */
    public static File getFileFromServer(String path, ProgressDialog pd) throws Exception {
        // 如果相等的话表示当前的sdcard挂载在手机上并且是可用的
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            URL url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(5000);
            // 获取到文件的大小
            pd.setMax(conn.getContentLength());
            InputStream is = conn.getInputStream();
            File file = new File(Environment.getExternalStorageDirectory(), "updata.apk");
            file.delete();
            FileOutputStream fos = new FileOutputStream(file);
            BufferedInputStream bis = new BufferedInputStream(is);
            byte[] buffer = new byte[1024];
            int len;
            int total = 0;
            while ((len = bis.read(buffer)) != -1) {
                fos.write(buffer, 0, len);
                total += len;
                // 获取当前下载量
                pd.setProgress(total);
            }
            fos.close();
            bis.close();
            is.close();
            return file;
        } else {
            return null;
        }
    }
}