自定义录像机 没任何新意
16lz
2021-01-23
自定义录像机的例子，没什么新意
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(); }}
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