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使用 phonegap 下载文件时，当互联网关闭时 - 应用程序挂起并崩溃。我收到以下错误：

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: body)' * First throw call stack: (0x35b4c88f 0x33770259 0x35b4c789 0x35b4c7ab 0x35ab968b 0x56a7f 0x57f8d 0x34f9dc29 0x34ef56d9 0x34ef56a3 0x34f9ddfb 0x3189dcb5 0x318034b7 0x318031a3 0x318030d9 0x35b20ad3 0x35b20335 0x35b1f045 0x35aa24a5 0x35aa236d 0x3383d439 0x3327acd5 0x28d9f 0x28d60) terminate called throwing an exception(lldb)

文件的下载逻辑：

if(isOnline){
            //  alert("DEVICE is ONLINE" + isOnline);
            try{
                filePath = globalPathNew + "/" +name+ "."+fExt;
                //     alert("SAVING VIDEO AT ------> " + filePath);


                document.getElementById('PB'+name).style.display = 'block';

                document.getElementById('P'+name+'L').innerHTML = '';

                document.getElementById('P'+name+'L').innerHTML = 'Downloading...';





                ftv.onprogress = function(progressEvent) {
                    console.log("In Progress video"+progressEvent.lengthComputable);
                    if (progressEvent.lengthComputable) {
                        //downloadcompleteStatus =  Math.round(100 * (progressEvent.loaded / progressEvent.total));
                        $("#P" + name + "Progress").text(Math.round(100 * (progressEvent.loaded / progressEvent.total)) + "%");
                        console.log("------progressEvent if video------->%"+Math.round(100 * (progressEvent.loaded / progressEvent.total)));
                    } else {
                        console.log("------progressEvent else------->%"+Math.round(100 * (progressEvent.loaded / progressEvent.total)));

                    }
                };


                fileObjAbort = ftv;
                //alert("Video FileObj"+JSON.stringify(fileObjAbort));

                ftv.download(
                             url,
                             filePath,
                             function(entry) {

                             // alert("download complete: " + entry.fullPath);
                             //                                      console.log('video entry.fullPath------'+entry.fullPath);
                             //                                      console.log('video filePath ----'+filePath);

                             changeIsdownloadStatus(filePath, name, 'video');

                             if(currElementId != '' && currElementId != '' && currElementId != ''){
                             detailPageView(currElementId,currElementtype,currElementcountNum);
                             }
                             var index = -1;

                             $.each(downloadList, function(key,tempItem){
                                    if(tempItem.elementId == elementId){
                                    index = key;

                                    }
                                    });

                            // alert("dw list"+JSON.stringify(downloadList));
                             if(index != -1){
                             delete downloadList[index];
                             downloadList.splice(index,1);
                             }
                             //alert("dw list after Video Splice \n"+JSON.stringify(downloadList));
                             findNextDownloadItem(name);


                             //  alert("DOWNLOADED ------> ");
                             if(currDownload == elementId){

                             //changeIsdownloadStatus(filePath,name, 'delete');

                             if(currElementId != '' && currElementId != '' && currElementId != ''){
                             detailPageView(currElementId,currElementtype,currElementcountNum);
                             }

                             }


                             console.log('*********************Video******************************');
                             console.log('-->delete element id:'+elementId);
                             console.log('deleteProgressindex Position:'+index);
                             console.log('-->before delete Length Array :'+downloadList.length);

                             console.log('-->before delete Length Array :'+downloadList.length);
                             console.log('***************************************************');


                             //                                      playMedia(filePath, name,'video');


                             // Code added
                           //bhavya  getFileSystemRefForWriting(jsonData);

                             deleteProgress(name,elementTitle,isDownloadedFlag,elementAudio,val,filePath);
                             // Code added
                             // getFileSystemRefForWriting(jsonData);

                             },
                             function(error) {
                             if(error.code != 4 || error.code != '4'){
                             //alert("Download Error");

                             jAlert('Download was not completed due to lost internet connection. Please connect to the Internet and re-download.', 'TT');
                             console.log("download error" + error.source);
                             //                                      console.log("download error source " + error.source);
                             //                                      console.log("download error target " + error.target);
                             //                                      console.log("upload error code" + error.code);
                             }
                             }
                             );

            }
            catch(error)
            {
                var txt="There was an error on this page.\n\n";
                txt+="Error description: " + err.message + "\n\n";
                txt+="Click OK to continue.\n\n";
                console.log('in catch block of video------>>>>'+txt);
            }


        }else{
            jAlert('Please go online to download file.', 'TT');
        }

当我断开与 Internet 的连接时，我应该收到以下错误：由于 Internet 连接丢失，下载未完成。请连接到 Internet 并重新下载。

当互联网关闭时，在main.m文件中切换到 Objective-c并卡在这一行：

retVal 为 0。它不执行 NSLog 行。

#import <UIKit/UIKit.h>

int main(int argc, char* argv[])
{
    @autoreleasepool {
        **int retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");**

        NSLog(@"RETURN VALUE ----->: %d ", retVal);

        return retVal;
    }
}

任何人都可以提出可能的原因吗？

谢谢， Ankit 坦纳

4

2 回答 2

1

以下是phonegap 2.5的修复

  1. 转到 CordovaLib.xcodeproject
  2. 导航到：类 > 命令 > CDVFileTransfer.m
  3. 转到或搜索以下函数： - (NSMutableDictionary*)createFileTransferError
  4. 在[result setObject:body forKey:@"body"];之前添加以下行 if (body == nil) body = @"";
  5. 瞧！！！你在那儿。

感谢我的同事:)

PS：这些错误和其他几个错误列在 Phonegap for iOS 的 Apache 页面上。

于 2013-06-19T12:01:25.600 回答
0

您不能将nil值设置为字典对象。如果您想要一个没有值的占位符，请使用[NSNull null]，它会创建一个单例实例NSNull。当它试图为 key 定义对象时它会崩溃body。如果您有权访问代码，请尝试 atry .... catch以阻止它尝试nil，可能是默认值。

如果没有代码，这只是对该错误消息的猜测。

于 2013-06-19T01:58:32.893 回答