How to listen the gimbal position?

• You can use GimbalKey.KeyConnection to listen the connection status of each gimbal index.
• You can add 3 listeners to different componentIndexType which includes LEFT, RIGHT and TOP, the initial value is null.
• When a gimbal has connected with a camera, the listener will return true, otherwise it will return false or null.
• The example code is shown below.

KeyManager.getInstance.listen(KeyTools.createKey(GimbalKey.KeyConnection,componentIndexType),this,callback)