Android Development calls the mobile phone camera to use MediaRecorder for video recording and Playback

Let's play with the video recording function of mobile phones. Make a DEMO.
Check the recording process: Copy codeThe Code is as follows: mediarecorder = new MediaRecorder (); // create a mediarecorder object
// Set the recorded video source to Camera (Camera)
Mediarecorder. setVideoSource (MediaRecorder. VideoSource. CAMERA );
// Set the video Encapsulation Format THREE_GPP to 3gp. MPEG_4 to mp4 after recording.
Mediarecorder. setOutputFormat (MediaRecorder. OutputFormat. THREE_GPP );
// Sets the recorded video encoding h263 h264
Mediarecorder. setVideoEncoder (MediaRecorder. VideoEncoder. H264 );
// Set the video recording resolution. It must be placed behind the encoding and format. Otherwise, an error is returned.
Mediarecorder. setVideoSize (176,144 );
// Set the Frame Rate of the recorded video. It must be placed behind the encoding and format. Otherwise, an error is returned.
Mediarecorder. setVideoFrameRate (20 );
Mediarecorder. setPreviewDisplay (surfaceView. getHolder (). getSurface ());
// Set the output path of the video file
LastFileName = newFileName ();
Mediarecorder. setOutputFile (lastFileName );
Try {
// Prepare for recording
Mediarecorder. prepare ();
// Start recording
Mediarecorder. start ();
} Catch (IllegalStateException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
} Catch (IOException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
}
End Shooting:
If (mediarecorder! = Null ){
// Stop
Mediarecorder. stop ();
Mediarecorder. release ();
Mediarecorder = null;
}

Paste my own encapsulation class:Copy codeThe Code is as follows: package zyf. demo. moviedemo;
Import java. io. File;
Import java. io. IOException;
Import java. util. Timer;
Import java. util. TimerTask;
Import android. media. MediaRecorder;
Import android. view. SurfaceView;
Public class MovieRecorder {
Private MediaRecorder mediarecorder;
Boolean isRecording;
Public void startRecording (SurfaceView surfaceView ){
Mediarecorder = new MediaRecorder (); // create a mediarecorder object
// Set the recorded video source to Camera (Camera)
Mediarecorder. setVideoSource (MediaRecorder. VideoSource. CAMERA );
// Set the video Encapsulation Format THREE_GPP to 3gp. MPEG_4 to mp4 after recording.
Mediarecorder. setOutputFormat (MediaRecorder. OutputFormat. THREE_GPP );
// Sets the recorded video encoding h263 h264
Mediarecorder. setVideoEncoder (MediaRecorder. VideoEncoder. H264 );
// Set the video recording resolution. It must be placed behind the encoding and format. Otherwise, an error is returned.
Mediarecorder. setVideoSize (176,144 );
// Set the Frame Rate of the recorded video. It must be placed behind the encoding and format. Otherwise, an error is returned.
Mediarecorder. setVideoFrameRate (20 );
Mediarecorder. setPreviewDisplay (surfaceView. getHolder (). getSurface ());
// Set the output path of the video file
LastFileName = newFileName ();
Mediarecorder. setOutputFile (lastFileName );
Try {
// Prepare for recording
Mediarecorder. prepare ();
// Start recording
Mediarecorder. start ();
} Catch (IllegalStateException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
} Catch (IOException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
}
IsRecording = true;
TimeSize = 0;
Timer = new Timer ();
Timer. schedule (new TimerTask (){
@ Override
Public void run (){
// TODO Auto-generated method stub
TimeSize ++;
}
}, 0,1000 );
}
Timer timer;
Int timeSize = 0;
Private String lastFileName;
Public void stopRecording (){
If (mediarecorder! = Null ){
// Stop
Mediarecorder. stop ();
Mediarecorder. release ();
Mediarecorder = null;
Timer. cancel ();
If (null! = LastFileName &&! "". Equals (lastFileName )){
File f = new File (lastFileName );
String name = f. getName (). substring (0,
F. getName (). lastIndexOf (". 3gp "));
Name + = "_" + timeSize + "s.3gp ";
String newPath = f. getParentFile (). getAbsolutePath () + "/"
+ Name;
If (f. renameTo (new File (newPath ))){
Int I = 0;
I ++;
}
}
}
}
Public String newFileName (){
Try {
Return File. createTempFile ("/mov _", ". 3gp"). getAbsolutePath ();
} Catch (IOException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
Return null;
}
}
Public void release (){
If (mediarecorder! = Null ){
// Stop
Mediarecorder. stop ();
Mediarecorder. release ();
Mediarecorder = null;
}
}}

At the same time, we will play it back:Copy codeThe Code is as follows: public void play (String fileName, SurfaceView view ){
MPlayer = new MediaPlayer ();
MPlayer. setAudioStreamType (AudioManager. STREAM_MUSIC );
MPlayer. setDisplay (view. getHolder (); // defines a SurfaceView to play it.
MPlayer. setOnCompletionListener (new OnCompletionListener (){
@ Override
Public void onCompletion (MediaPlayer arg0 ){
Stop ();
// Canvas. drawColor (Color. TRANSPARENT,
// PorterDuff. Mode. CLEAR );
}
});
Try {
MPlayer. setDataSource (fileName );
MPlayer. prepare ();
} Catch (IllegalStateException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
} Catch (IOException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
}
MPlayer. start ();
}
When playing the video:
Public void stop (){
If (mPlayer! = Null ){
MPlayer. release ();
MPlayer = null;
}
}

Download Sample Code
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