Android下载大文件

我正在尝试从Web服务器下载较大的.zip文件，但是我的行为很怪异，其说明是:

我正在使用512MB SD卡在设备仿真器API级别3(版本1.5)中执行代码。我使用“删除数据用户”

启动设备

conexion.getContentLength()的大小长度为7012725

服务器地址为localhost(10.0.2.2)，但是我尝试使用外部服务器，并且行为相同。我已仔细检查过是否可以通过网络浏览器下载文件。

我在 list 文件中具有以下权限:

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

错误:

它开始下载文件，我可以看到文本10、20、30、40、50，然后停止在60。

一段时间后，仿真器将自行重启。

解决方法:

stacktflow中的

This问题正在设备中运行，不适用于我的情况。

关于此wifi锁issue我所做的就是添加此权限“android.permission.WAKE_LOCK”，然后添加这段代码，但具有完全相同的行为:

WifiManager.WifiLock wifilock;
WifiManager管理器=(WifiManager)getSystemService(Context.WIFI_SERVICE);
wifilock = manager.createWifiLock(“wifilock”);
wifilock.acquire();
...
wifilock.release();

这是代码，它是在单独的线程中执行的:

private void downloadData(){
    try{
        Log.v(TAG, "downloading data");

        URL url  = new URL("http://10.0.2.2/1.zip");
        URLConnection connection = url.openConnection();
        connection.connect();

        int lenghtOfFile = connection.getContentLength();

        Log.v(TAG, "lenghtOfFile = "+lenghtOfFile);

        InputStream is = url.openStream();

        File testDirectory = new File(Environment.getExternalStorageDirectory()+"/testDirectory/");
    if(!testDirectory.exists()){
        testDirectory.mkdir();
    }

        FileOutputStream fos = new FileOutputStream(testDirectory+"/files.zip");

        byte data[] = new byte[1024];

        int count = 0;
        long total = 0;
        int progress = 0;

        while ((count=is.read(data)) != -1)
        {
            total += count;
            int progress_temp = (int)total*100/lenghtOfFile;
            if(progress_temp%10 == 0 && progress != progress_temp){
                progress = progress_temp;
                Log.v(TAG, "total = "+progress);
            }
            fos.write(data, 0, count);
        }

        is.close();
        fos.close();

    Log.v(TAG, "downloading finished");

    }catch(Exception e){
        Log.v(TAG, "exception in downloadData");
        e.printStackTrace();
    }

}

有什么线索吗？
非常感谢你。

更新并提供更多日志描述:

00:00 It starts downloading:
V/iPhoto  (  853): downloading data
V/iPhoto  (  853): lenghtOfFile = 7732809
V/iPhoto  (  853): total = 10
V/iPhoto  (  853): total = 20
V/iPhoto  (  853): total = 30
V/iPhoto  (  853): total = 40
V/iPhoto  (  853): total = 50 (round 00:05)
-> Here it stops and the DDMS disconnects the device immediately

03:40 It finish the download (not always) and the device reboots on its own:
I/Process (  595): Sending signal. PID: 595 SIG: 3
I/dalvikvm(  595): threadid=7: reacting to signal 3
D/dalvikvm(  722): GC freed 2193 objects / 135808 bytes in 176 sec
V/iPhoto  (  853): total = 60
I/dalvikvm(  595): Wrote stack trace to '/data/anr/traces.txt'
I/ActivityManager(  595): Process com.google.android.apps.maps:FriendService (pid 778) has died.
I/ActivityManager(  595): Process com.android.mms (pid 732) has died.
V/iPhoto  (  853): total = 70
V/iPhoto  (  853): total = 80
V/iPhoto  (  853): total = 90
V/iPhoto  (  853): total = 100
V/iPhoto  (  853): downloading finished
V/iPhoto  (  853): thread finish loading
I/Process (  595): Sending signal. PID: 595 SIG: 9
I/ActivityThread(  757): Removing dead content provider: settings
I/ActivityThread(  748): Removing dead content provider: settings
I/ActivityThread(  722): Removing dead content provider: settings
I/ActivityThread(  700): Removing dead content provider: settings
I/ServiceManager(  549): service 'package' died
... services dying...
I/ServiceManager(  549): service 'wifi' died
E/installd(  557): eof
E/installd(  557): failed to read size
I/installd(  557): closing connection
D/qemud   (  560): fdhandler_event: disconnect on fd 11
D/qemud   (  560): fdhandler_event: disconnect on fd 12
E/vold    (  550): Framework disconnected
I/Zygote  (  554): Exit zygote because system server (595) has terminated
I/ServiceManager(  549): service 'simphonebook' died
I/ServiceManager(  549): service 'isms' died
I/ServiceManager(  549): service 'iphonesubinfo' died
I/ServiceManager(  549): service 'phone' died
D/AndroidRuntime(  949):
D/AndroidRuntime(  949): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
... and starting ...

谁能尝试我的代码并下载大小约为8MB的zip文件？它对您有用吗？

最佳答案