Android 输入流互联网断开

发布于 2024-07-13 19:18:37 字数 679 浏览 6 评论 0原文

在我的 Android 程序中，我有一些下载文件的代码。这工作正常，但由于在手机上，您可以随时断开连接，我需要更改它，当您中途有人打电话/您失去手机接收/等时，它会重新连接并恢复下载。我不知道如何检测 InputStream 已停止工作。请参阅下面的代码：

InputStream in = c.getInputStream();

    byte[] buffer = new byte[8024];
    int len1 = 0;

    while ( (len1 = in.read(buffer)) > 0 ) {
        Log("-"+len1+"- Downloaded.");
        f.write(buffer,0, len1);
        Thread.sleep(50);
    }

当我失去互联网连接时，我的日志显示：

Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -6024- Downloaded. (some lower number)

然后我的程序就挂在 while( (len1 = 等。我需要这样做，以便当互联网断开连接时我等待互联网再次连接然后继续下载。

原文

In my Android program, I have some code that downloads a file. This works fine, but since on a cell phone, you can be disconnected at any time, I need to change it do it reconnects and resumes the download when you are halfway through and somebody calls/you lose cell reception/etc. I cannot figure out how to detect the InputStream has stopped working. See the code below:

InputStream in = c.getInputStream();

    byte[] buffer = new byte[8024];
    int len1 = 0;

    while ( (len1 = in.read(buffer)) > 0 ) {
        Log("-"+len1+"- Downloaded.");
        f.write(buffer,0, len1);
        Thread.sleep(50);
    }

When I lose internet connection, My log shows:

Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -8024- Downloaded.
Log: -6024- Downloaded. (some lower number)

And then my program just hangs on the while( (len1 = etc. I need to make it so when the internet gets disconnected I wait for the internet to be connected again and then resume the download.

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