Android Multimedia Framework Summary (i) MediaPlayer introduction state diagram and life cycle

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Preface: Starting from this article, will enter the multimedia framework, including MediaPlayer, Camera, Surface, Mediarecord, the next few are MediaPlayer related. Also look at the following agenda:

• State diagram of the MediaPlayer
• Idle state
• End State
• Error status
• Initialized status
• Prepared status
• Preparing status
• Started status
• Paused status
• Stopped status
• playbackcompleted status

MediaPlayer Introduction

The MediaPlayer class is a video/audio file and stream for controlling playback.
The main areas covered are as follows:

• State diagram
• Valid state and invalid state
• Permissions
• callback method

State diagram of the MediaPlayer

Playback control video/audio files and streams are managed by the state machine. Displays the MediaPlayer life cycle and is affected by the playback control operation.

Ellipse represents the state in which the MediaPlayer resides
Arcs represent playback control and drive the MediaPlayer state for transitions.
There are two types of arcs, one representing synchronous method calls with a single arrow, and another with two arrows representing asynchronous method calls

From the state diagram, we can see that MediaPlayer has some of the following States:

Idle state and end state

Error status

Initialized status

Prepared status

Started status

Paused status

Stopped status

playbackcompleted status

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Android Multimedia Framework Summary (i) MediaPlayer introduction state diagram and life cycle