Android版本更新实例详解

android版本更新实例详解

1、导入xutils的jar包

2、在androidmanifest.xml中添加权限

3、选择下载的路径，和下载apk文件的网址

private string url=”http://www.oschina.net/uploads/osc-android-v2.6.4-release.apk”; 
private string sdpath = “/sdcard/” + system.currenttimemillis() + “yuyin.apk”; 

4、当点击按钮的时候进行下载

httputils httputils=new httputils(); 
//参数一:下载的路径 参数二:下载到sdpath的路径 参数三: 
httputils.download(url, sdpath, true, new requestcallback() {

  @override
  public void onsuccess(responseinfo<file> arg0) {
    mbtn.settext("下载完成");
    //路径
    string path = arg0.result.getpath();
    file file = new file(path);
    intent intent = new intent(intent.action_view); 
     intent.setdataandtype(uri.fromfile(file), "application/vnd.android.package-archive"); 
    startactivity(intent);
  }

  @override
  public void onfailure(httpexception arg0, string arg1) {
    mbtn.settext("下载失败");
  }
  @override
  public void onloading(long total, long current, boolean isuploading) {
    // todo auto-generated method stub
    super.onloading(total, current, isuploading);
    mbtn.settext("正在下载.....");

  }
  @override
  public void onstart() {
    super.onstart();
    mbtn.settext("开始下载");
  }
});

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