首页
学习
活动
专区
工具
TVP
发布
社区首页 >专栏 >Android-录屏APP该怎么实现?

Android-录屏APP该怎么实现?

作者头像
code_horse
发布2018-07-02 14:54:35
1.4K0
发布2018-07-02 14:54:35
举报
文章被收录于专栏:Android NoteAndroid Note
前言

这次不是需求了,这次是个人兴趣爱好。个人比较喜欢音视频方面的东西,还有就是有时候需要录屏去制作GIF图,所以就花时间去试着自己写一个简单的录屏小程序自用了。

经过一段时间的尝试,算是弄出来了一个能用的录屏小程序。

老规矩,先上图。

这里使用的是MediaProjectionManagerMediaProjectionVirtualDisplay,所以API级别最低支持到21。还有就是我的targetSdkVersion是22,这里我是偷懒了,避免了权限申请那一步。

public class ScreenRecorderActivity extends AppCompatActivity {

    public static final String TAG = "ez";
    private static final int DISPLAY_WIDTH = 720;
    private static final int DISPLAY_HEIGHT = 1280;
    private static final int RECORD_REQUEST_CODE = 100;
    private int mScreenDensity;
    private Button mBtnRecorder;
    boolean isRecording = false;
    private MediaRecorder mMediaRecorder;
    private VirtualDisplay mVirtualDisplay;
    private MediaProjection mMediaProjection;
    private MediaProjectionManager mProjectionManager;
    private MediaProjectionCallback mMediaProjectionCallback;
    private static final SparseIntArray ORIENTTIONS = new SparseIntArray();

    static {
        ORIENTTIONS.append(Surface.ROTATION_0, 90);
        ORIENTTIONS.append(Surface.ROTATION_90, 0);
        ORIENTTIONS.append(Surface.ROTATION_180, 270);
        ORIENTTIONS.append(Surface.ROTATION_270, 180);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_recorder_layout);

        DisplayMetrics metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        mScreenDensity = metrics.densityDpi;

        mMediaRecorder = new MediaRecorder();
        mProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);

        mBtnRecorder = (Button) findViewById(R.id.id_btn_screen_recorder);
        mBtnRecorder.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                isStartRecordScreen();
            }
        });


    }
    //是否开启录制
    private void isStartRecordScreen() {
        if (!isRecording) {
            initRecorder();
            recordScreen();
        } else {
            mMediaRecorder.stop();
            mMediaRecorder.reset();
            stopRecordScreen();
        }
    }
    //初始化录制参数
    private void initRecorder() {
        try {
            if (mMediaRecorder == null) {
                Log.d(TAG, "initRecorder: MediaRecorder为空啊---");
                return;
            }
            mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 音频源
            mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);// 视频源
            mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);//视频输出格式
            //这里的路径我是直接写死了。。。
            mMediaRecorder.setOutputFile("/storage/emulated/0/ScreenRecorder/" + System.currentTimeMillis() + ".mp4");//存储路径
            mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);// 设置分辨率
            mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);// 视频录制格式
            mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);// 音频格式
            mMediaRecorder.setVideoFrameRate(16);//帧率
            mMediaRecorder.setVideoEncodingBitRate(5242880);//视频清晰度
            int rotation = getWindowManager().getDefaultDisplay().getRotation();
            int orientataion = ORIENTTIONS.get(rotation + 90);
            mMediaRecorder.setOrientationHint(orientataion);//设置旋转方向
            mMediaRecorder.prepare();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    //开始录制
    private void recordScreen() {
        if (mMediaProjection == null) {
            startActivityForResult(mProjectionManager.createScreenCaptureIntent(), RECORD_REQUEST_CODE);
            return;
        }

        mVirtualDisplay = createVirtualDisplay();
        mMediaRecorder.start();
        isRecording = true;
        changeText();
    }
    //停止录制
    private void stopRecordScreen() {
        if (mVirtualDisplay == null) {
            return;
        }

        mVirtualDisplay.release();
        destroyMediaProjection();
        isRecording = false;
        changeText();
    }
    //释放录制的资源
    private void destroyMediaProjection() {
        if (mMediaProjection != null) {
            mMediaProjection.unregisterCallback(mMediaProjectionCallback);
            mMediaProjection.stop();
            mMediaProjection = null;
        }
    }

    private VirtualDisplay createVirtualDisplay() {
        return mMediaProjection.createVirtualDisplay("ScreenRecorder", DISPLAY_WIDTH, DISPLAY_HEIGHT, mScreenDensity,
                DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, mMediaRecorder.getSurface(), null, null);
    }

    private void changeText() {
        if (isRecording) {
            mBtnRecorder.setText("停止录屏");
        } else {
            mBtnRecorder.setText("开始录屏");
        }
    }
    //录制回调
    private class MediaProjectionCallback extends MediaProjection.Callback {
        @Override
        public void onStop() {
            if (isRecording) {
                isRecording = false;
                changeText();
                mMediaRecorder.stop();
                mMediaRecorder.reset();
            }
            mMediaProjection = null;
            stopRecordScreen();
        }
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == RECORD_REQUEST_CODE) {

            if (resultCode != RESULT_OK) {
                Toast.makeText(ScreenRecorderActivity.this, "录屏权限被禁止了啊", Toast.LENGTH_SHORT).show();
                isRecording = false;
                changeText();
                return;
            }

            mMediaProjectionCallback = new MediaProjectionCallback();
            mMediaProjection = mProjectionManager.getMediaProjection(resultCode, data);
            mMediaProjection.registerCallback(mMediaProjectionCallback, null);
            mVirtualDisplay = createVirtualDisplay();
            mMediaRecorder.start();
            isRecording = true;
            changeText();
        }

    }
     //停止录制时,释放资源
    @Override
    protected void onStop() {
        super.onStop();
        destroyMediaProjection();
    }

    @Override
    public void onBackPressed() {
        if (isRecording) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("确定停止录屏吗?")
                    .setPositiveButton("停止", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            mMediaRecorder.stop();
                            mMediaRecorder.reset();
                            stopRecordScreen();
                            finish();
                        }
                    }).setNegativeButton("继续录吧", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            }).create().show();

        } else {
            finish();

        }
    }
}

需要的权限:

    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
    <uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

更多参数的设置请自行尝试,方法参数解释请点击这里

最后的最后,

祝大家元宵节快乐
本文参与 腾讯云自媒体分享计划,分享自作者个人站点/博客。
原始发表:2018.03.02 ,如有侵权请联系 cloudcommunity@tencent.com 删除

本文分享自 作者个人站点/博客 前往查看

如有侵权,请联系 cloudcommunity@tencent.com 删除。

本文参与 腾讯云自媒体分享计划  ,欢迎热爱写作的你一起参与!

评论
登录后参与评论
0 条评论
热度
最新
推荐阅读
目录
  • 前言
  • 祝大家元宵节快乐
相关产品与服务
云开发 CloudBase
云开发(Tencent CloudBase,TCB)是腾讯云提供的云原生一体化开发环境和工具平台,为200万+企业和开发者提供高可用、自动弹性扩缩的后端云服务,可用于云端一体化开发多种端应用(小程序、公众号、Web 应用等),避免了应用开发过程中繁琐的服务器搭建及运维,开发者可以专注于业务逻辑的实现,开发门槛更低,效率更高。
领券
问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档