资源库案例库手机卫士答案java.pdfVIP

packagecom.mobilesafe.service;

importjava.io.File;

importjava.io.FileOutputStream;

importjava.io.InputStream;

import.HttpURLConnection;

import.URL;

importandroid.os.Environment;

publicclassDownloadAPKService{

privatestaticDownloadAPKServiceinstance;

publicstaticDownloadAPKServicegetInstance(){

if(nullinstance){

instance=newDownloadAPKService();

}

returninstance;

}

publicFilegetFileAPK(StringurlPath)throwception{

URLurl=newURL(urlPath);

HttpURLConnectionconn=(HttpURLConnection)url.openConnection();

InputStreamins=conn.getInputStream();

Filefile=null;

//sdkд

if(Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){

file=newFile(Environment.getExternalStorageDirectory(),mobilesafe.apk);

FileOutputStreamfos=newFileOutputStream(file);

byte[]buffer=newbyte[1024];

intlen;

while((len=ins.read(buffer))!=-1){

fos.write(buffer,0,len);

}

ins.close();

fos.close();

conn.disconnect();

}else{

thrownewException(sdkд);

}

returnfile;

}

包com.mobilesafe.service;

导入java.io.file;

导入java.io.io.fileoutputstream;

导入java.io.inputstream;

导入.httpurlConnection;

导入.url;

导入Android.os.Environment;

公共类downloadapkservice{

私有静态式服务实例；

publicstaticdownloadapkservicegetInstance（）{

如果（null=实例）{

实例=newdownloadapkservice（）;

返回实例;}

公共文件getfileapk（字符串urlpath）抛出异常{

URLURL=newURL（urlPath）;

httpurlconnectionconn=（httpurlConnection）url.openconnection（）;

inputStreamins=conn.getInputStream（）;

文件文件=null;/sdk

if（emoveruct.media_mounted.equals（emovention.getExternalStoragestate（）{

file=newf