WIFI Direct：createGroup with config 总是失败，报错

如何解决WIFI Direct：createGroup with config 总是失败，报错

当我调用此方法 createGroup(WifiP2pManager.Channel c,WifiP2pManager.ActionListener listener) 时，它起作用了。

但我想设置一些配置，所以我调用 createGroup(WifiP2pManager.Channel c,WifiP2pConfig config,WifiP2pManager.ActionListener listener) ，它出错了。

这是我的代码：

WifiP2pConfig config = new WifiP2pConfig.Builder()
            .enablePersistentMode(true)
            .setNetworkName("DIRECT-xy-MEIZU 16s")
            .setPassphrase("wanghui123456")
            .setDeviceAddress(MacAddress.fromString("72:8E:BA:03:F1:16"))
            .setGroupOperatingBand(WifiP2pConfig.GROUP_OWNER_BAND_5GHZ)
            .build();

    Log.d(TAG,"onCreateBackgroundJob: " +  config.describeContents() + config.toString());
    if (ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions,and then overriding
        //   public void onRequestPermissionsResult(int requestCode,String[] permissions,//                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }
    manager.createGroup(channel,config,new WifiP2pManager.ActionListener() {
        @Override
        public void onSuccess() {
            Log.d(TAG,"onSuccess: ");
        }

        @Override
        public void onFailure(int reason) {
            Log.d(TAG,"onFailure: " + reason);
        }
    });

我得到的日志是 onFailure: 0

错误
在 API 级别 14 中添加
public static final int ERROR
通过 ActionListener#onFailure。表示操作因内部错误而失败。
常量值：0 (0x00000000))