android6.0以后视频录制

来源：互联网发布：尘埃拉力赛知乎编辑：程序博客网时间：2024/06/16 04:27

效果图：测试手机华为mate8 android7.0

package com.scout.myapplication;import android.Manifest;import android.app.Activity;import android.content.pm.ActivityInfo;import android.content.pm.PackageManager;import android.graphics.PixelFormat;import android.hardware.Camera;import android.media.MediaRecorder;import android.os.Build;import android.os.Bundle;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.util.SparseIntArray;import android.view.Surface;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.Toast;import java.io.File;import java.util.Collections;import java.util.Comparator;import java.util.List;public class Main2Activity extends Activity implements SurfaceHolder.Callback {    private SurfaceView mSurfaceView;    private SurfaceHolder mSurfaceHolder;    private Button btnStartStop;    private boolean isRecording = false;//标记是否已经在录制    private MediaRecorder mRecorder;//音视频录制类    private Camera mCamera = null;//相机    private Camera.Size mSize = null;//相机的尺寸    private int mCameraFacing = Camera.CameraInfo.CAMERA_FACING_BACK;//默认后置摄像头    private static final SparseIntArray orientations = new SparseIntArray();//手机旋转对应的调整角度   static final int  REQUEST_CODE_ASK_CALL_PHONE=122;    static {        orientations.append(Surface.ROTATION_0, 90);        orientations.append(Surface.ROTATION_90, 0);        orientations.append(Surface.ROTATION_180, 270);        orientations.append(Surface.ROTATION_270, 180);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setWindow();        setContentView(R.layout.activity_main2);        Accessibility();    }    private void setWindow() {        requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏        // 设置竖屏显示        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);        // 选择支持半透明模式,在有surfaceview的activity中使用。        getWindow().setFormat(PixelFormat.TRANSLUCENT);    }    private void initViews() {        mSurfaceView = (SurfaceView) findViewById(R.id.surfaceview);        btnStartStop = (Button) findViewById(R.id.btnStartStop);        btnStartStop.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (!isRecording) {                    startRecord();                } else {                    stopRecord();                }            }        });        SurfaceHolder holder = mSurfaceView.getHolder();// 取得holder        holder.setFormat(PixelFormat.TRANSPARENT);        holder.setKeepScreenOn(true);        holder.addCallback(this); // holder加入回调接口    }    /**     * 初始化相机     */    private void initCamera() {        if (Camera.getNumberOfCameras() == 2) {            mCamera = Camera.open(mCameraFacing);        } else {            mCamera = Camera.open();        }        CameraSizeComparator sizeComparator = new CameraSizeComparator();        Camera.Parameters parameters = mCamera.getParameters();        if (mSize == null) {            List<Camera.Size> vSizeList = parameters.getSupportedPreviewSizes();            Collections.sort(vSizeList, sizeComparator);            for (int num = 0; num < vSizeList.size(); num++) {                Camera.Size size = vSizeList.get(num);                if (size.width >= 800 && size.height >= 480) {                    this.mSize = size;                    break;                }            }            mSize = vSizeList.get(0);            List<String> focusModesList = parameters.getSupportedFocusModes();            //增加对聚焦模式的判断            if (focusModesList.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {                parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);            } else if (focusModesList.contains(Camera.Parameters.FOCUS_MODE_AUTO)) {                parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);            }            mCamera.setParameters(parameters);        }        int rotation = getWindowManager().getDefaultDisplay().getRotation();        int orientation = orientations.get(rotation);        mCamera.setDisplayOrientation(orientation);    }    @Override    protected void onResume() {        super.onResume();        initCamera();    }    @Override    public void onPause() {        releaseCamera();        super.onPause();    }    /**     * 开始录制     */    private void startRecord() {        if (mRecorder == null) {            mRecorder = new MediaRecorder(); // 创建MediaRecorder        }        if (mCamera != null) {            mCamera.stopPreview();            mCamera.unlock();            mRecorder.setCamera(mCamera);        }        try {            // 设置音频采集方式            mRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);            //设置视频的采集方式            mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);            //设置文件的输出格式            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);//aac_adif， aac_adts， output_format_rtp_avp， output_format_mpeg2ts ，webm            //设置audio的编码格式            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);            //设置video的编码格式            mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);            //设置录制的视频编码比特率            mRecorder.setVideoEncodingBitRate(1024 * 1024);            //设置录制的视频帧率,注意文档的说明:            mRecorder.setVideoFrameRate(30);            //设置要捕获的视频的宽度和高度            mSurfaceHolder.setFixedSize(320, 240);//最高只能设置640x480            mRecorder.setVideoSize(320, 240);//最高只能设置640x480            //设置记录会话的最大持续时间（毫秒）            mRecorder.setMaxDuration(60 * 1000);            mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());            String path = getExternalCacheDir().getPath();            if (path != null) {                File dir = new File(path + "/videos");                if (!dir.exists()) {                    dir.mkdir();                }                path = dir + "/" + System.currentTimeMillis() + ".mp4";                //设置输出文件的路径                mRecorder.setOutputFile(path);                //准备录制                mRecorder.prepare();                //开始录制                mRecorder.start();                isRecording = true;                btnStartStop.setText("停止");            }        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 停止录制     */    private void stopRecord() {        try {            //停止录制            mRecorder.stop();            //重置            mRecorder.reset();            btnStartStop.setText("开始");        } catch (Exception e) {            e.printStackTrace();        }        isRecording = false;    }    /**     * 释放MediaRecorder     */    private void releaseMediaRecorder() {        if (mRecorder != null) {            mRecorder.release();            mRecorder = null;        }    }    /**     * 释放相机资源     */    private void releaseCamera() {        try {            if (mCamera != null) {                mCamera.stopPreview();                mCamera.setPreviewCallback(null);                mCamera.unlock();                mCamera.release();            }        } catch (RuntimeException e) {        } finally {            mCamera = null;        }    }    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width,                               int height) {        // 将holder，这个holder为开始在onCreate里面取得的holder，将它赋给mSurfaceHolder        mSurfaceHolder = holder;        if (mCamera == null) {            return;        }        try {            //设置显示            mCamera.setPreviewDisplay(holder);            mCamera.startPreview();        } catch (Exception e) {            e.printStackTrace();            releaseCamera();            finish();        }    }    @Override    public void surfaceCreated(SurfaceHolder holder) {        // 将holder，这个holder为开始在onCreate里面取得的holder，将它赋给mSurfaceHolder        mSurfaceHolder = holder;    }    @Override    public void surfaceDestroyed(SurfaceHolder holder) {        // surfaceDestroyed的时候同时对象设置为null        if (isRecording && mCamera != null) {            mCamera.lock();        }        mSurfaceView = null;        mSurfaceHolder = null;        releaseMediaRecorder();        releaseCamera();    }    private class CameraSizeComparator implements Comparator<Camera.Size> {        public int compare(Camera.Size lhs, Camera.Size rhs) {            if (lhs.width == rhs.width) {                return 0;            } else if (lhs.width > rhs.width) {                return 1;            } else {                return -1;            }        }    }    /**     * 对于6.0以后的机器动态权限申请     */    /**     * 对于6.0以后的机器动态权限申请     */    public void Accessibility() {        if (Build.VERSION.SDK_INT >= 23) {            int checkCallPhonePermission = ContextCompat.checkSelfPermission(Main2Activity.this, Manifest.permission.CAMERA);            int checkCallPhonePermission2 = ContextCompat.checkSelfPermission(Main2Activity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE);            int checkCallPhonePermission3 = ContextCompat.checkSelfPermission(Main2Activity.this, Manifest.permission.RECORD_AUDIO);            if (checkCallPhonePermission != PackageManager.PERMISSION_GRANTED &&checkCallPhonePermission2 != PackageManager.PERMISSION_GRANTED && checkCallPhonePermission3 != PackageManager.PERMISSION_GRANTED) {                ActivityCompat.requestPermissions(Main2Activity.this, new String[]{Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO}, REQUEST_CODE_ASK_CALL_PHONE);                return;            } else {                initViews();            }        } else {            initViews();        }    }    @Override    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {        switch (requestCode) {            case REQUEST_CODE_ASK_CALL_PHONE:                if (grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {                    // Permission Granted                    initViews();                } else {                    // Permission Denied                    Toast.makeText(Main2Activity.this, "CALL_PHONE Denied", Toast.LENGTH_SHORT)                            .show();                }                break;            default:                super.onRequestPermissionsResult(requestCode, permissions, grantResults);        }    }}

布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <SurfaceView        android:id="@+id/surfaceview"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" />    <Button        android:id="@+id/btnStartStop"        android:layout_width="wrap_content"        android:layout_height="55dip"        android:layout_gravity="center"        android:text="开始"        tools:context=".MainActivity" /></LinearLayout>

权限声明

<uses-permission android:name="android.permission.CAMERA" ></uses-permission><uses-permission android:name="android.permission.RECORD_AUDIO" ></uses-permission><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" ></uses-permission>
注意  如果

targetSdkVersion 在23以下就不会执行动态权限申请

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