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我想从我时,应用程序通过这个代码下载管理器类尝试下载多个文件时崩溃?
public void downloadimages(String url,String filename)
{
String ur1=url,v1=filename;
downloadManager = (DownloadManager)getSystemService(DOWNLOAD_SERVICE);
Uri Download_Uri = Uri.parse(ur1);
DownloadManager.Request request = new DownloadManager.Request(Download_Uri);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI);
request.setAllowedOverRoaming(false);
request.setDescription("Android Data download using DownloadManager.");
request.setDestinationInExternalFilesDir(getApplicationContext(),Environment.DIRECTORY_DOWNLOADS,v1 + ".jpg");
downloadManager.enqueue(request);
}
当我运行该应用程序第一次下载发生,但在此之后,应用程序did'nt打开应用程序崩溃连接到Internet网络上下载图片我检查了dowloaded文件还:
String path = "/mnt/sdcard/Android/data/com.example.webdata/files/Download/" + extra2 + ".jpg";
tt1.append(path);
File f = new File(path);
if(f.exists())
{
//Toast.makeText(getApplicationContext(), "File already exists....",
// Toast.LENGTH_SHORT).show();
}
else
{
downloadimages(extra,extra2);
}
如果文件以前它不应该才可下载下一次被下载,但我在我的应用程序崩溃,我不知道为什么任何帮助家伙.... ..... 这是我的logcat输出: -
02-21 18:00:41.547: E/AndroidRuntime(23964): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.webdata/com.example.webdata.MainActivity}: java.lang.IndexOutOfBoundsException: Invalid index 1088, size is 1088