自定义录像机 没任何新意

package com.example.ggpla.myapplication;

import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.widget.ToggleButton;

import com.example.ggpla.utils.FileOptionUtils;

import java.io.IOException;

public class MyVideoCamera extends AppCompatActivity implements SurfaceHolder.Callback{

private Camera myCamera;

private SurfaceView mySView;
private SurfaceHolder myHolder;

private ToggleButton toggleButton;

private boolean mIsRecording = false;
private MediaRecorder mediaRecorder;

private String videoUrl;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main22);

mySView = (SurfaceView)findViewById(R.id.surfaceView2);
myHolder = mySView.getHolder();
myHolder.addCallback(this);
myHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

toggleButton = (ToggleButton)findViewById(R.id.toggleButton2);
toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {//true时，从关闭状态到开启状态
startmediaRecorder();
Toast.makeText(MyVideoCamera.this,"开始录像",Toast.LENGTH_LONG).show();
} else {//false时，从开启状态到关闭状态
stopmediaRecorder();
Toast.makeText(MyVideoCamera.this,"录像完成",Toast.LENGTH_LONG).show();
}

}
});
}

@Override
protected void onResume() {
super.onResume();
openCamera();
if (myHolder != null){
setStartPreview(myHolder,myCamera);
}
}

@Override
protected void onPause() {
super.onPause();
releaseCamera();
}

/**
*获取Camera硬件对象
*/
private void openCamera(){
if(myCamera == null){
myCamera = Camera.open(Camera.CameraInfo.CAMERA_FACING_BACK);
}
}

/**
* 释放相机资源
*/
private void releaseCamera(){
if(myCamera != null){
myCamera.setPreviewCallback(null);
myCamera.stopPreview();
myCamera.release();
myCamera = null;
}
}

//开始
private void setStartPreview(SurfaceHolder surfaceHolder,Camera camera){
try {
camera.setPreviewDisplay(surfaceHolder);
//将系统预览角度设置为横屏
camera.setDisplayOrientation(90);
camera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
setStartPreview(myHolder,myCamera);
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
myCamera.stopPreview();
setStartPreview(myHolder,myCamera);
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
releaseCamera();
}

/**
* 结束录制方法
*/
private void stopmediaRecorder() {
if(mediaRecorder!=null){
if(mIsRecording){
mediaRecorder.stop();
//mCamera.lock();
mediaRecorder.reset();
mediaRecorder.release();
mediaRecorder=null;
mIsRecording = false;
try {
myCamera.reconnect();
} catch (IOException e) {
Toast.makeText(this, "reconect fail",Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
}
}

/**
* 开始录像方法
*/
private void startmediaRecorder() {
//自定义的静态方法，http://8779947.blog.51cto.com/8769947/1733467中有介绍FileOptionUtils工具类
videoUrl = FileOptionUtils.getSavePath(FileOptionUtils.NAMED_BY_SELF, "test", "MP4", "VIDEO");
myCamera.unlock();
mIsRecording = true;
mediaRecorder = new MediaRecorder();
mediaRecorder.reset();
mediaRecorder.setCamera(myCamera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//设置录像机拍摄参数，与下面参数设置只能二选一
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mediaRecorder.setVideoFrameRate(5);
mediaRecorder.setVideoSize(640, 480);
//设置录像机拍摄参数，与下面参数设置只能二选一，CamcorderProfile.QUALITY_HIGH为拍摄质量。
//        CamcorderProfile mCamcorderProfile = CamcorderProfile.get(Camera.CameraInfo.CAMERA_FACING_BACK, CamcorderProfile.QUALITY_HIGH);
//        mediaRecorder.setProfile(mCamcorderProfile);
mediaRecorder.setOutputFile(videoUrl);
mediaRecorder.setPreviewDisplay(myHolder.getSurface());

try {
mediaRecorder.prepare();
} catch (Exception e) {

mIsRecording = false;
Toast.makeText(MyVideoCamera.this, "fail", Toast.LENGTH_LONG).show();
e.printStackTrace();
myCamera.lock();
}
mediaRecorder.start();
}

}