android - 忘记旧的 WiFi Direct 连接

Question

有没有办法忘记旧的 WiFi Direct 连接(在代码中)？我需要这个来改变谁成为组所有者。我正在设置 groupOwnerIntent = 15，但尚未成为组所有者。

Answer 1

如果您只想断开现有的 WiFiP2p 连接，则只需调用 WiFiP2pManager#removeGroup。设备 GO 或对等设备无关紧要。

如果您正在谈论忘记永久组 - 您也可以删除它们。但它只能通过反射(reflection)来实现。而且无论是设备 GO 还是 peer。

    manager.removeGroup(channel, new WifiP2pManager.ActionListener() {
        @Override
        public void onSuccess() {
            Log.d(TAG, "removeGroup success");
            deletePersistentGroup(group);
        }

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

其中 manager 是 WiFip2pManager 的一个实例。 deletePersistanteGroup(WiFiP2pGroup group) 是:

    private void deletePersistentGroup(WifiP2pGroup wifiP2pGroup) {
        try {

            Method getNetworkId = WifiP2pGroup.class.getMethod("getNetworkId");
            Integer networkId = (Integer) getNetworkId.invoke(wifiP2pGroup);
            Method deletePersistentGroup = WifiP2pManager.class.getMethod("deletePersistentGroup",
                    WifiP2pManager.Channel.class, int.class, WifiP2pManager.ActionListener.class);
            deletePersistentGroup.invoke(manager, channel, networkId, new WifiP2pManager.ActionListener() {
                @Override
                public void onSuccess() {
                    Log.e(TAG, "deletePersistentGroup onSuccess");
                }

                @Override
                public void onFailure(int reason) {
                    Log.e(TAG, "deletePersistentGroup failure: " + reason);
                }
            });
        } catch (NoSuchMethodException e) {
            Log.e("WIFI", "Could not delete persistent group", e);
        } catch (InvocationTargetException e) {
            Log.e("WIFI", "Could not delete persistent group", e);
        } catch (IllegalAccessException e) {
            Log.e("WIFI", "Could not delete persistent group", e);
        }
    }

UPD

要成为 GO，您应该在向同行发送邀请之前调用 WiFiP2pManager#createGroup()。