我在工作灯上实现了一个应用程序，我需要从服务器下载文件，它在 Iphone5 上运行良好意味着文件可以顺利下载而不会卡住应用程序流程。但是当我在三星 Galaxy s2（V 4.1）上运行应用程序时并开始使用 for 循环下载文件，我的应用程序卡住了，直到下载完成。但是，当我只有一个文件要下载但计数高于 3 或 4 个时，它的工作正常，应用程序卡住了。
如果（networkInfo.networkConnectionType=='WIFI'）{
$(brandClassDis).addClass('ui-disabled'); // Disabling the Brand.
$(".lms_loadernew").css("display", "block");
var syncProgBar = "#syncProgressBar"+result[0].json.BrandID;
var syncProgLabel = "#syncLoadingLabel"+result[0].json.BrandID;
$(syncProgBar).progressbar({
value: 0,
}).show();
$(syncProgLabel).text(parseInt(0, 10)+"%").show();
localStorage.setItem("download"+result[0].json.BrandID,0);
localStorage.setItem("downloadSucc"+result[0].json.BrandID,0);
for(var i=0; i<result.length; i++){
var obj = {VideoID:result[i].json.VideoID,BrandID:result[i].json.BrandID,CourseID:result[i].json.CourseID,LoadingStatus:"0"};
VideosList.add(obj,{push:false});
result[i].json.IsDownload = 2;
Videos.replace(result);
**downloadFolder(result[i],result.length)**
}
}
函数下载文件夹（结果，numVideoBrand）{
try{
var loaderPer = 0;
var courseId ="#sync_"+result.json.CourseID.replace(/ /g,'');
var courseLabelId ="#loadingLabel"+result.json.CourseID.replace(/ /g,'');
var syncProgBar = "#syncProgressBar"+result.json.BrandID.replace(/ /g,'');
var syncProgLabel = "#syncLoadingLabel"+result.json.BrandID.replace(/ /g,'');
var serverLoc = encodeURI(result.json.DownloadName);
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, function(fileSystem) {
fileSystem.root.getDirectory("LMS_APP", {create: true, exclusive: false}, function(directory){
var localPath = directory.fullPath+"/"+"Videos"+"/"+zipFileName;
var ft = new FileTransfer();
ft.download(serverLoc,localPath, function(entry) {
entry.file(function(file) {
WL.Logger.debug("File size: " + file.size);
if(file.size<=854){
downloadFail("",result,numVideoBrand);
entry.remove(successRemove, failRemove);
}else{
if(localStorage.getItem("download"+result.json.BrandID) == null || localStorage.getItem("download"+result.json.BrandID) =="" || localStorage.getItem("download"+result.json.BrandID) == undefined){
localStorage.setItem("download"+result.json.BrandID,1);
}else{
localStorage.setItem("download"+result.json.BrandID,(localStorage.getItem("download"+result.json.BrandID)-(-1)));
}
localStorage.setItem("downloadSucc"+result.json.BrandID,(localStorage.getItem("downloadSucc"+result.json.BrandID)-(-1)));
WL.Logger.debug("Folder is:---->"+directory.fullPath+"/"+zipFileName);
WL.Logger.debug("download"+localStorage.getItem("download"+result.json.BrandID)+"..."+numVideoBrand+"........"+ localStorage.getItem("downloadSucc"+result.json.BrandID));
var loadedVideoPer = (( localStorage.getItem("download"+result.json.BrandID)/numVideoBrand)* 100);
$(syncProgBar).progressbar({
value: loadedVideoPer,
});
$(syncProgLabel).text(parseInt(loadedVideoPer, 10)+"%");
$(courseId).hide();
$(courseLabelId).hide();
}
}, function(error){downloadFail(error,result,numVideoBrand);});
}, function(error) {
});
$(courseId).progressbar({
value: loaderPer,
}).show();
$(courseLabelId).text(parseInt(loaderPer, 10)+"%").show();
ft.onprogress = function(progressEvent) {
if (progressEvent.lengthComputable) {
loaderPer = ((progressEvent.loaded / progressEvent.total)*100);
$(courseId).progressbar({
value: loaderPer,
});
$(courseLabelId).text(parseInt(loaderPer, 10)+"%");
//courseLabelId.text(parseInt(loaderPer, 10) + "%" );
loadingStatus(result);
}
};
},function(error){
downloadFail(error,result,numVideoBrand);
});
}, function(error){
downloadFail(error,result,numVideoBrand);
});
}catch(e){
WL.Logger.debug("exp in downloadFile: "+e);
//alert("exp "+videoLoader);
}
}