Android5.0以上版本录屏实现代码(完整代码)

　　if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE)  != PackageManager.PERMISSION_GRANTED) {  ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 102); } if (ContextCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO)  != PackageManager.PERMISSION_GRANTED) {  ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, 103); } if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA)  != PackageManager.PERMISSION_GRANTED) {  ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, 104); } Intent intent = null; if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {  intent = mediaProjectionManager.createScreenCaptureIntent();  startActivityForResult(intent, 101);//正常情况是要执行到这里的,作用是申请捕捉屏幕 } else {  ShowUtil.showToast(context, "Android版本太低，无法使用该功能"); }

　　boolean isrun = false;//用来标记录屏的状态private MediaProjectionManager mediaProjectionManager;  private MediaProjection mediaProjection;//录制视频的工具private int width, height, dpi;//屏幕宽高和dpi，后面会用到  private ScreenRecorder screenRecorder;//这个是自己写的录视频的工具类，下文会放完整的代码  Thread thread;//录视频要放在线程里去执行

mediaProjectionManager = (MediaProjectionManager) context.getSystemService(MEDIA_PROJECTION_SERVICE);WindowManager manager = this.getWindowManager();DisplayMetrics outMetrics = new DisplayMetrics();manager.getDefaultDisplay().getMetrics(outMetrics);width = outMetrics.widthPixels;height = outMetrics.heightPixels;dpi = outMetrics.densityDpi;

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == 102) {  Toast.makeText(context, "缺少读写权限", Toast.LENGTH_SHORT).show();  return; } if (requestCode == 103) {  Toast.makeText(context, "缺少录音权限", Toast.LENGTH_SHORT).show();  return; } if (requestCode == 104) {  Toast.makeText(context, "缺少相机权限", Toast.LENGTH_SHORT).show();  return; } if (requestCode != 101) {  Log.e("HandDrawActivity", "error requestCode =" + requestCode); } if (resultCode != RESULT_OK) {  Toast.makeText(context, "捕捉屏幕被禁止", Toast.LENGTH_SHORT).show();  return; } mediaProjection = mediaProjectionManager.getMediaProjection(resultCode, data); if (mediaProjection != null) {  screenRecorder = new ScreenRecorder(width, height, mediaProjection, dpi); } thread = new Thread() {  @Override  public void run() {  screenRecorder.startRecorder();//跟ScreenRecorder有关的下文再说，总之这句话的意思就是开始录屏的意思  } }; thread.start(); binding.startPlayer.setText("停止");//开始和停止我用的同一个按钮，所以开始录屏之后把按钮文字改一下 isrun = true;//录屏状态改成真 }

import android.hardware.display.DisplayManager;import android.media.MediaCodec;import android.media.MediaCodecInfo;import android.media.MediaFormat;import android.media.MediaMuxer;import android.media.MediaRecorder;import android.media.projection.MediaProjection;import android.os.Build;import android.os.Environment;import android.text.TextUtils;import android.util.Log;import android.view.Surface;import com.coremedia.iso.boxes.Container;import com.googlecode.mp4parser.authoring.Movie;import com.googlecode.mp4parser.authoring.Track;import com.googlecode.mp4parser.authoring.builder.DefaultMp4Builder;import com.googlecode.mp4parser.authoring.container.mp4.MovieCreator;import com.googlecode.mp4parser.authoring.tracks.AppendTrack;import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import java.io.RandomAccessFile;import java.nio.ByteBuffer;import java.nio.channels.FileChannel;import java.util.ArrayList;import java.util.LinkedList;import java.util.List;public class ScreenRecorder { private int mWidth, mHeight, mDensty; private MediaProjection mediaProjection; private MediaCodec.BufferInfo mBufferInfo; private MediaCodec mEncorder; private Surface mInputSurface; private MediaMuxer mMuxer; private boolean isQuit = false; private boolean mMuxerStarted = false; private int mTrackIndex; private String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/cache"; private MediaRecorder mediaRecorder; public ScreenRecorder(int mWidth, int mHeight, MediaProjection mediaProjection, int mDensty) { this.mWidth = mWidth; this.mHeight = mHeight; this.mediaProjection = mediaProjection; this.mDensty = mDensty; File file = new File(path); if (!file.exists()) {  file.mkdirs(); } } public void startRecorder() { prepareRecorder(); startLuYin(); startRecording(); } public void stop() { isQuit = true; releaseEncorders(1); List<String> filePath = new ArrayList<>(); filePath.add(path + "/APlanyinpin.amr"); filePath.add(path + "/APlanshipin.mp4"); joinVideo(filePath, path); } public void destory() { releaseEncorders(0); } private void startLuYin() { File file = new File(path, "APlanyinpin.amr"); mediaRecorder = new MediaRecorder(); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT); mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT); mediaRecorder.setOutputFile(file.getAbsolutePath()); try {  mediaRecorder.prepare();  mediaRecorder.start();  Log.e("HandDrawActivity", "已经开始录音"); } catch (IOException e) {  e.printStackTrace(); } } private void prepareRecorder() { mBufferInfo = new MediaCodec.BufferInfo(); //元数据，描述bytebuffer的数据，尺寸，偏移 //创建格式化对象 MIMI_TYPE 传入的 video/avc 是H264编码格式 MediaFormat format = MediaFormat.createVideoFormat("video/avc", mWidth, mHeight); int frameRate = 45; format.setInteger(MediaFormat.KEY_BIT_RATE, 3000000); format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface); format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 10); format.setInteger(MediaFormat.KEY_FRAME_RATE, frameRate); format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, 1); format.setInteger(MediaFormat.KEY_CAPTURE_RATE, frameRate); format.setInteger(MediaFormat.KEY_REPEAT_PREVIOUS_FRAME_AFTER, 1000000 / frameRate); try {  mEncorder = MediaCodec.createEncoderByType("video/avc");  mEncorder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);  mInputSurface = mEncorder.createInputSurface();  mEncorder.start(); } catch (IOException e) {  e.printStackTrace();  releaseEncorders(0); } } private void startRecording() { File saveFile = new File(path, "APlanshipin.mp4"); try {  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {  mMuxer = new MediaMuxer(saveFile.getAbsolutePath(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);  mediaProjection.createVirtualDisplay("SCREENRECORDER", mWidth, mHeight, mDensty, DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC,   mInputSurface, null, null);  drainEncoder();  } } catch (Exception e) {  e.printStackTrace(); } } private void drainEncoder() { while (!isQuit) {  Log.e("TAG", "drain.....");  int bufferIndex = mEncorder.dequeueOutputBuffer(mBufferInfo, 0);  if (bufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {  try {   Thread.sleep(10);  } catch (InterruptedException e) {   e.printStackTrace();  }  }  if (bufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {  mTrackIndex = mMuxer.addTrack(mEncorder.getOutputFormat());  if (!mMuxerStarted && mTrackIndex >= 0) {   mMuxer.start();   mMuxerStarted = true;   Log.e("HandDrawActivity", "已经开始录屏");  }  }  if (bufferIndex >= 0) {  Log.e("TAG", "drain...write..");  ByteBuffer bufferData = mEncorder.getOutputBuffer(bufferIndex);  if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {   mBufferInfo.size = 0;  }  if (mBufferInfo.size != 0) {   if (mMuxerStarted) {   bufferData.position(mBufferInfo.offset);   bufferData.limit(mBufferInfo.offset + mBufferInfo.size);   mMuxer.writeSampleData(mTrackIndex, bufferData, mBufferInfo);   }  }  mEncorder.releaseOutputBuffer(bufferIndex, false);  if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {   break;  }  } } Log.e("HandDrawActivity", "已经结束录屏"); } private void releaseEncorders(int i) { if (mediaProjection != null) {  mediaProjection.stop(); } mBufferInfo = null; if (mEncorder != null) {  mEncorder.stop(); } mInputSurface = null; if (mMuxer != null && i == 1) {  mMuxer.stop(); } if (mediaRecorder != null) {  mediaRecorder.stop();  mediaRecorder.reset();  mediaRecorder.release(); } } private boolean joinVideo(List<String> filePaths, String resultPath) { Log.e("HandDrawActivity", "准备合成中"); boolean result = false; if (filePaths == null || filePaths.size() <= 0 || TextUtils.isEmpty(resultPath)) {  throw new IllegalArgumentException(); } if (filePaths.size() == 1) { // 只有一个视频片段，不需要合并  return true; } try {  Movie[] inMovies = new Movie[filePaths.size()];  for (int i = 0; i < filePaths.size(); i++) {  Log.e("HandDrawActivity", "filePaths=" + filePaths.get(i));  File f = new File(filePaths.get(i));  if (f.exists()) {   inMovies[i] = MovieCreator.build(filePaths.get(i));  }  }  // 分别取出音轨和视频  List<Track> videoTracks = new LinkedList<>();  List<Track> audioTracks = new LinkedList<>();  for (Movie m : inMovies) {  for (Track t : m.getTracks()) {   if (t.getHandler().equals("soun")) {   audioTracks.add(t);   }   if (t.getHandler().equals("vide")) {   videoTracks.add(t);   }  }  }  // 合并到最终的视频文件  Movie outMovie = new Movie();  if (audioTracks.size() > 0) {  outMovie.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));  }  if (videoTracks.size() > 0) {  outMovie.addTrack(new AppendTrack(videoTracks.toArray(new Track[videoTracks.size()])));  }  Container mp4file = new DefaultMp4Builder().build(outMovie);  // 将文件输出  File resultFile = new File(resultPath, "APlanTeacherAnswer.mp4");  if (resultFile.exists() && resultFile.isFile()) {  resultFile.delete();  }  FileChannel fc = new RandomAccessFile(resultFile, "rw").getChannel();  mp4file.writeContainer(fc);  fc.close();  Log.e("HandDrawActivity", "合成完毕");  // 合成完成后把原片段文件删除  for (String filePath : filePaths) {  File file = new File(filePath);  file.delete();  }  result = true;  HandDrawActivity.sendVideo(); } catch (FileNotFoundException e) {  e.printStackTrace(); } catch (Exception e) {  e.printStackTrace(); } return result; }}

public void startRecorder() { prepareRecorder();//录视频前的准备 startLuYin();//直接录音频(不用准备) startRecording();//录视频 }

private void startLuYin() { File file = new File(path, "APlanyinpin.amr"); mediaRecorder = new MediaRecorder(); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);//声音来源，麦克 mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);//音频格式，默认，其实就是上面定义好的amr了，除此之外还有mp4 mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);//编码格式，问题是我不知道编码格式对什么有影响，是音质高低还是文件大小还是解析快慢，等我有时间去专门研究一下 mediaRecorder.setOutputFile(file.getAbsolutePath()); try {  mediaRecorder.prepare();  mediaRecorder.start();  Log.e("HandDrawActivity", "已经开始录音"); } catch (IOException e) {  e.printStackTrace(); } }

//录视频前的准备工作private void prepareRecorder() { mBufferInfo = new MediaCodec.BufferInfo(); //元数据，描述bytebuffer的数据，尺寸，偏移 //创建格式化对象 MIMI_TYPE 传入的 video/avc 是H264编码格式 MediaFormat format = MediaFormat.createVideoFormat("video/avc", mWidth, mHeight); int frameRate = 45; format.setInteger(MediaFormat.KEY_BIT_RATE, 3000000); format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface); format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 10); format.setInteger(MediaFormat.KEY_FRAME_RATE, frameRate); format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, 1); format.setInteger(MediaFormat.KEY_CAPTURE_RATE, frameRate); format.setInteger(MediaFormat.KEY_REPEAT_PREVIOUS_FRAME_AFTER, 1000000 / frameRate);//编码器的设置，具体是设置的啥我也不太清楚，但是网上查一查都是这么写的！！！ try {  mEncorder = MediaCodec.createEncoderByType("video/avc");  mEncorder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);  mInputSurface = mEncorder.createInputSurface();  mEncorder.start();//让编码器先跑起来 } catch (IOException e) {  e.printStackTrace();  releaseEncorders(0); } }

private void startRecording() { File saveFile = new File(path, "APlanshipin.mp4"); try {  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {  mMuxer = new MediaMuxer(saveFile.getAbsolutePath(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);//百度一下MediaMuxer,讲的很详细的  mediaProjection.createVirtualDisplay("SCREENRECORDER", mWidth, mHeight, mDensty, DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC,   mInputSurface, null, null);  drainEncoder();  } } catch (Exception e) {  e.printStackTrace(); } }

private void drainEncoder() { while (!isQuit) {  Log.e("TAG", "drain.....");  int bufferIndex = mEncorder.dequeueOutputBuffer(mBufferInfo, 0);  if (bufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {  try {   Thread.sleep(10);  } catch (InterruptedException e) {   e.printStackTrace();  }  }  if (bufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {  mTrackIndex = mMuxer.addTrack(mEncorder.getOutputFormat());  if (!mMuxerStarted && mTrackIndex >= 0) {   mMuxer.start();   mMuxerStarted = true;   Log.e("HandDrawActivity", "已经开始录屏");  }  }  if (bufferIndex >= 0) {  Log.e("TAG", "drain...write..");  ByteBuffer bufferData = mEncorder.getOutputBuffer(bufferIndex);  if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {   mBufferInfo.size = 0;  }  if (mBufferInfo.size != 0) {   if (mMuxerStarted) {   bufferData.position(mBufferInfo.offset);   bufferData.limit(mBufferInfo.offset + mBufferInfo.size);   mMuxer.writeSampleData(mTrackIndex, bufferData, mBufferInfo);   }  }  mEncorder.releaseOutputBuffer(bufferIndex, false);  if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {   break;  }  } } Log.e("HandDrawActivity", "已经结束录屏"); }

private boolean joinVideo(List<String> filePaths, String resultPath) { Log.e("HandDrawActivity", "准备合成中"); boolean result = false; if (filePaths == null || filePaths.size() <= 0 || TextUtils.isEmpty(resultPath)) {  throw new IllegalArgumentException(); } if (filePaths.size() == 1) { // 只有一个视频片段，不需要合并  return true; } try {  Movie[] inMovies = new Movie[filePaths.size()];  for (int i = 0; i < filePaths.size(); i++) {  Log.e("HandDrawActivity", "filePaths=" + filePaths.get(i));  File f = new File(filePaths.get(i));  if (f.exists()) {   inMovies[i] = MovieCreator.build(filePaths.get(i));  }  }  // 分别取出音轨和视频  List<Track> videoTracks = new LinkedList<>();  List<Track> audioTracks = new LinkedList<>();  for (Movie m : inMovies) {  for (Track t : m.getTracks()) {   if (t.getHandler().equals("soun")) {   audioTracks.add(t);   }   if (t.getHandler().equals("vide")) {   videoTracks.add(t);   }  }  }  // 合并到最终的视频文件  Movie outMovie = new Movie();  if (audioTracks.size() > 0) {  outMovie.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));  }  if (videoTracks.size() > 0) {  outMovie.addTrack(new AppendTrack(videoTracks.toArray(new Track[videoTracks.size()])));  }  Container mp4file = new DefaultMp4Builder().build(outMovie);  // 将文件输出  File resultFile = new File(resultPath, "APlanTeacherAnswer.mp4");  if (resultFile.exists() && resultFile.isFile()) {  resultFile.delete();  }  FileChannel fc = new RandomAccessFile(resultFile, "rw").getChannel();  mp4file.writeContainer(fc);  fc.close();  Log.e("HandDrawActivity", "合成完毕");  // 合成完成后把原片段文件删除  for (String filePath : filePaths) {  File file = new File(filePath);  file.delete();  }  result = true;  HandDrawActivity.sendVideo(); } catch (FileNotFoundException e) {  e.printStackTrace(); } catch (Exception e) {  e.printStackTrace(); } return result; }

private void releaseEncorders(int i) { if (mediaProjection != null) {  mediaProjection.stop(); } mBufferInfo = null; if (mEncorder != null) {  mEncorder.stop(); } mInputSurface = null; if (mMuxer != null && i == 1) {  mMuxer.stop(); } if (mediaRecorder != null) {  mediaRecorder.stop();  mediaRecorder.reset();  mediaRecorder.release(); } }