android vpn以编程方式连接

Question

我试图以编程方式启动vpn连接.我收到了这个错误.我使用的是Android 2.1,我的测试手机内核版本是2.6.32.9.当我手动操作时,我能够连接到VPN.但是以编程方式,我收到了这个错误.

java.io.IOException: cannot start service: mtpd
E/VpnService(11817):    at com.android.vpn.DaemonProxy.start(DaemonProxy.java:75)
E/VpnService(11817):    at com.android.vpn.VpnDaemons.startDaemon(VpnDaemons.java:106)
E/VpnService(11817):    at com.android.vpn.VpnDaemons.startMtpd(VpnDaemons.java:127)
E/VpnService(11817):    at com.android.vpn.VpnDaemons.startL2tp(VpnDaemons.java:50)
E/VpnService(11817):    at com.android.vpn.L2tpService.connect(L2tpService.java:31)
E/VpnService(11817):    at com.android.vpn.VpnService.onConnect(VpnService.java:135)
E/VpnService(11817):    at com.android.vpn.VpnServiceBinder$2.run(VpnServiceBinder.java:130)
E/VpnService(11817):    at java.lang.Thread.run(Thread.java:1096)

DeamonProxy:75指向以下方法.

private boolean blockUntil(String expectedState, int waitTime) {
        String cmd = SVC_STATE_CMD_PREFIX + mName;
        int sleepTime = 200; // ms
        int n = waitTime * 1000 / sleepTime;
        for (int i = 0; i < n; i++) {
            if (expectedState.equals(SystemProperties.get(cmd))) {
                if (DBG) {
                    Log.d(mTag, mName + " is " + expectedState + " after "
                            + (i * sleepTime) + " msec");
                }
                break;
            }
            sleep(sleepTime);
        }
        return expectedState.equals(SystemProperties.get(cmd));
    }

此方法超时并返回上述错误.

非常感谢任何帮助/建议.

提前致谢.

Answer 1

第一个建议 - 检查清单中的权限。至少android.permission.INTERNET应该列在那里。