本文实例为大家分享了android实现录屏功能的具体代码,供大家参考,具体内容如下
1、mian.activity
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package com.fpt.screenvideo; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.media.projection.MediaProjectionManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.DisplayMetrics; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.RadioGroup; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private static final String TAG = "MainActivity" ; private Button mTextView,off_btn; private static final String RECORD_STATUS = "record_status" ; private static final int REQUEST_CODE = 1000 ; private int mScreenWidth; private int mScreenHeight; private int mScreenDensity; /** 是否已经开启视频录制 */ private boolean isStarted = false ; /** 是否为标清视频 */ private boolean isVideoSd = true ; /** 是否开启音频录制 */ private boolean isAudio = true ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); Log.i(TAG, "onCreate" ); if (savedInstanceState != null ) { isStarted = savedInstanceState.getBoolean(RECORD_STATUS); } getView() ; getScreenBaseInfo(); } private void getView() { mTextView = findViewById(R.id.button_control); off_btn=findViewById(R.id.button_contro2); off_btn.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View view) { //// Intent service = new Intent(this, ScreenRecordService.class); // stopService(service); // isStarted = !isStarted; } }); if (isStarted) { statusIsStarted(); } else { statusIsStoped(); } mTextView.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if (isStarted) { stopScreenRecording(); //功能 statusIsStoped(); //仅仅是状态 Log.i(TAG, "Stoped screen recording" ); } else { startScreenRecording(); //功能 } } }); RadioGroup radioGroup = (RadioGroup) findViewById(R.id.redio_group); radioGroup.setOnCheckedChangeListener( new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub switch (checkedId) { case R.id.sd_button: isVideoSd = true ; break ; case R.id.hd_button: isVideoSd = false ; break ; default : break ; } } }); CheckBox audioBox = (CheckBox) findViewById(R.id.audio_check_box); audioBox.setOnCheckedChangeListener( new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO Auto-generated method stub isAudio = isChecked; } }); } /** * 开启屏幕录制时的UI状态 */ private void statusIsStarted() { mTextView.setText( "停止录制" ); mTextView.setBackgroundColor(Color.GREEN); } /** * 结束屏幕录制后的UI状态 */ private void statusIsStoped() { mTextView.setText( "开始录制" ); mTextView.setBackgroundColor(Color.RED); } /** * 获取屏幕相关数据 */ private void getScreenBaseInfo() { DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); mScreenWidth = metrics.widthPixels; mScreenHeight = metrics.heightPixels; mScreenDensity = metrics.densityDpi; } @Override protected void onSaveInstanceState(Bundle outState) { // TODO Auto-generated method stub super .onSaveInstanceState(outState); outState.putBoolean(RECORD_STATUS, isStarted); } /** * 获取屏幕录制的权限 */ private void startScreenRecording() { // TODO Auto-generated method stub MediaProjectionManager mediaProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE); Intent permissionIntent = mediaProjectionManager.createScreenCaptureIntent(); startActivityForResult(permissionIntent, REQUEST_CODE); } @Override protected void onActivityResult( int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super .onActivityResult(requestCode, resultCode, data); if (requestCode == REQUEST_CODE) { if (resultCode == RESULT_OK) { // 获得权限,启动Service开始录制 Intent service = new Intent( this , ScreenRecordService. class ); service.putExtra( "code" , resultCode); service.putExtra( "data" , data); service.putExtra( "audio" , isAudio); service.putExtra( "width" , mScreenWidth); service.putExtra( "height" , mScreenHeight); service.putExtra( "density" , mScreenDensity); service.putExtra( "quality" , isVideoSd); startService(service); // 已经开始屏幕录制,修改UI状态 isStarted = !isStarted; statusIsStarted(); // simulateHome(); // this.finish(); // 可以直接关闭Activity Log.i(TAG, "Started screen recording" ); } else { Toast.makeText( this , "跳出提示框" , Toast.LENGTH_LONG).show(); Log.i(TAG, "User cancelled" ); } } } /** * 关闭屏幕录制,即停止录制Service */ private void stopScreenRecording() { // TODO Auto-generated method stub Intent service = new Intent( this , ScreenRecordService. class ); stopService(service); isStarted = !isStarted; } /** * 模拟HOME键返回桌面的功能 */ private void simulateHome() { Intent intent = new Intent(Intent.ACTION_MAIN); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.addCategory(Intent.CATEGORY_HOME); this .startActivity(intent); } @Override public boolean onKeyDown( int keyCode, KeyEvent event) { // 在这里将BACK键模拟了HOME键的返回桌面功能(并无必要) if (keyCode == KeyEvent.KEYCODE_BACK) { simulateHome(); return true ; } return super .onKeyDown(keyCode, event); } } |
2、ScreenRecordService
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package com.fpt.screenvideo; import android.app.Service; import android.content.Context; import android.content.Intent; import android.hardware.display.DisplayManager; import android.hardware.display.VirtualDisplay; import android.media.MediaRecorder; import android.media.projection.MediaProjection; import android.media.projection.MediaProjectionManager; import android.os.Environment; import android.os.IBinder; import android.util.Log; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; public class ScreenRecordService extends Service { private static final String TAG = "ScreenRecordingService" ; private int mScreenWidth; private int mScreenHeight; private int mScreenDensity; private int mResultCode; private Intent mResultData; /** 是否为标清视频 */ private boolean isVideoSd; /** 是否开启音频录制 */ private boolean isAudio; private MediaProjection mMediaProjection; private MediaRecorder mMediaRecorder; private VirtualDisplay mVirtualDisplay; @Override public void onCreate() { // TODO Auto-generated method stub super .onCreate(); Log.i(TAG, "Service onCreate() is called" ); } @Override public int onStartCommand(Intent intent, int flags, int startId) { // TODO Auto-generated method stub Log.i(TAG, "Service onStartCommand() is called" ); mResultCode = intent.getIntExtra( "code" , - 1 ); mResultData = intent.getParcelableExtra( "data" ); mScreenWidth = intent.getIntExtra( "width" , 720 ); mScreenHeight = intent.getIntExtra( "height" , 1280 ); mScreenDensity = intent.getIntExtra( "density" , 1 ); isVideoSd = intent.getBooleanExtra( "quality" , true ); isAudio = intent.getBooleanExtra( "audio" , true ); mMediaProjection = createMediaProjection(); mMediaRecorder = createMediaRecorder(); mVirtualDisplay = createVirtualDisplay(); // 必须在mediaRecorder.prepare() 之后调用,否则报错"fail to get surface" mMediaRecorder.start(); return Service.START_NOT_STICKY; } private MediaProjection createMediaProjection() { Log.i(TAG, "Create MediaProjection" ); return ((MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE)).getMediaProjection(mResultCode, mResultData); } private MediaRecorder createMediaRecorder() { SimpleDateFormat formatter = new SimpleDateFormat( "yyyy-MM-dd-HH-mm-ss" ); Date curDate = new Date(System.currentTimeMillis()); String curTime = formatter.format(curDate).replace( " " , "" ); String videoQuality = "HD" ; if (isVideoSd) videoQuality = "SD" ; Log.i(TAG, "Create MediaRecorder" ); MediaRecorder mediaRecorder = new MediaRecorder(); // if(isAudio) mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE); mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mediaRecorder.setOutputFile(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES) + "/" + videoQuality + curTime + ".mp4" ); mediaRecorder.setVideoSize(mScreenWidth, mScreenHeight); //after setVideoSource(), setOutFormat() mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); //after setOutputFormat() // if(isAudio) mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); //after setOutputFormat() int bitRate; if (isVideoSd) { mediaRecorder.setVideoEncodingBitRate(mScreenWidth * mScreenHeight); mediaRecorder.setVideoFrameRate( 30 ); bitRate = mScreenWidth * mScreenHeight / 1000 ; } else { mediaRecorder.setVideoEncodingBitRate( 5 * mScreenWidth * mScreenHeight); mediaRecorder.setVideoFrameRate( 60 ); //after setVideoSource(), setOutFormat() bitRate = 5 * mScreenWidth * mScreenHeight / 1000 ; } try { mediaRecorder.prepare(); } catch (IllegalStateException | IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } Log.i(TAG, "Audio: " + isAudio + ", SD video: " + isVideoSd + ", BitRate: " + bitRate + "kbps" ); return mediaRecorder; } private VirtualDisplay createVirtualDisplay() { Log.i(TAG, "Create VirtualDisplay" ); return mMediaProjection.createVirtualDisplay(TAG, mScreenWidth, mScreenHeight, mScreenDensity, DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, mMediaRecorder.getSurface(), null , null ); } @Override public void onDestroy() { // TODO Auto-generated method stub super .onDestroy(); Log.i(TAG, "Service onDestroy" ); if (mVirtualDisplay != null ) { mVirtualDisplay.release(); mVirtualDisplay = null ; } if (mMediaRecorder != null ) { mMediaRecorder.setOnErrorListener( null ); mMediaProjection.stop(); mMediaRecorder.reset(); } if (mMediaProjection != null ) { mMediaProjection.stop(); mMediaProjection = null ; } } @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null ; } } |
3、androidManifest.xml权限
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<uses-permission android:name= "android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name= "android.permission.RECORD_AUDIO" /> |
4、service的注册
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<service android:name= ".ScreenRecordService" /> |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/jian11058/article/details/83587886