DataChannel.Observer (Video Android 7.3.1)

Enclosing class:

DataChannel
```
public static interface DataChannel.Observer
```
Java version of C++ DataChannelObserver.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onBufferedAmountChange(long previousAmount)`	The data channel's bufferedAmount has changed.
`void`	`onMessage(DataChannel.Buffer buffer)`	A data buffer was successfully received.
`void`	`onStateChange()`	The data channel state has changed.

- Method Detail
  - onBufferedAmountChange
```
void onBufferedAmountChange(long previousAmount)
```
    The data channel's bufferedAmount has changed.
  - onStateChange
```
void onStateChange()
```
    The data channel state has changed.
  - onMessage
```
void onMessage(DataChannel.Buffer buffer)
```
    A data buffer was successfully received. NOTE: |buffer.data| will be freed once this function returns so callers who want to use the data asynchronously must make sure to copy it first.