MediaRecorder
对应底层的c文件为/frameworks/av/media/libmedia/mediarecorder.cpp和frameworks/av/include/media/mediarecorder.h，总共有6个状态：
// 错误状态
MEDIA_RECORDER_ERROR = 0,
// Recorder对象被创建或者被reset
MEDIA_RECORDER_IDLE = 1 << 0,
// Recorder被初始化（其实就是设置好了视频源或者音频源）
MEDIA_RECORDER_INITIALIZED = 1 << 1,
// 输出格式已配置好
MEDIA_RECORDER_DATASOURCE_CONFIGURED = 1 << 2,
// Recorder可以开始录制了
MEDIA_RECORDER_PREPARED = 1 << 3,
// 正在录制过程中
MEDIA_RECORDER_RECORDING = 1 << 4,各状态和方法的关系：
MediaPlayer
对应底层c文件为frameworks/av/include/media/mediaplayer.h和frameworks/av/media/libmedia/mediaplayer.cpp，总共有9个状态：
//错误状态
MEDIA_PLAYER_STATE_ERROR = 0,
//reset后的状态
MEDIA_PLAYER_IDLE = 1 << 0,
//被初始化状态
MEDIA_PLAYER_INITIALIZED = 1 << 1,
//准备中状态
MEDIA_PLAYER_PREPARING = 1 << 2,
//已准备好状态
MEDIA_PLAYER_PREPARED = 1 << 3,
//开始播放状态
MEDIA_PLAYER_STARTED = 1 << 4,
//暂停播放状态
MEDIA_PLAYER_PAUSED = 1 << 5,
//停止播放状态
MEDIA_PLAYER_STOPPED = 1 << 6,
//完成播放状态
MEDIA_PLAYER_PLAYBACK_COMPLETE = 1 << 7各状态和方法的关系：
以上就是全部内容了，谢谢观看！