如何在Appcelerator /钛金属Android中无间隔地创建Android服务？

Question

I want to create a service in appcelerator android where it starts when i click a download button and stops only if download is interrupted/fails or network is not present.

How can i achieve it? I have referred this article http://docs.appcelerator.com/platform/latest/#!/api/Titanium.Android.Service

I am following this http://docs.appcelerator.com/platform/latest/#!/guide/File_Uploads_and_Downloads for downloading content (videos)

The other problem i face is ,i can't access the UI or the UI becomes almost non responsive, though i can scroll up and down. when download is in progress on android. This is what the UI looks like and i call a function on click of download button.

NOTE: Each element,light gray rectangle is like an accordian control, which toggles(expands and retracts) on click.

I have written a code like this in a videoDownloader.js file

 function downloadVideos(video_download_url){
       var xhr = Titanium.Network.createHTTPClient({
        onload: function() {
            // first, grab a "handle" to the file where you'll store the downloaded data
            var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory,'video.mp4');
            f.write(this.responseData); // write to the file

            timeout: 10000
    });
    xhr.open('GET',video_download_url);
    xhr.send();
    }

Answer 1

您可能需要研究这个模块 ，它可以为您处理所有事情。