我正在尝试实现一个应用程序，该应用程序在开始时使用我的自定义视频录制屏幕自动开始视频录制，并使用我自己的按钮停止录制和其他按钮。到目前为止，我所做的是设计了带有按钮的布局，但是如何在后台添加视频录制屏幕..请帮助.！
【问题讨论】：
标签： android android-camera video-capture android-camera-intent
这就是我实现它的方式：
public class MainActivity extends Activity implements SurfaceHolder.Callback {
private MediaRecorder recorder;
private SurfaceHolder surfaceHolder;
private CamcorderProfile camcorderProfile;
private Camera camera;
boolean recording = false;
boolean usecamera = true;
boolean previewRunning = false;
SurfaceView surfaceView;
Button btnStart, btnStop;
File root;
File file;
Boolean isSDPresent;
SimpleDateFormat simpleDateFormat;
String timeStamp;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.activity_main);
initComs();
actionListener();
}
private void initComs() {
simpleDateFormat = new SimpleDateFormat("ddMMyyyyhhmmss");
timeStamp = simpleDateFormat.format(new Date());
camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
surfaceView = (SurfaceView) findViewById(R.id.preview);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
btnStop = (Button) findViewById(R.id.btn_stop);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
isSDPresent = android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED);
}
public static float megabytesAvailable(File f) {
StatFs stat = new StatFs(f.getPath());
long bytesAvailable = (long) stat.getBlockSize()
* (long) stat.getAvailableBlocks();
return bytesAvailable / (1024.f * 1024.f);
}
private void actionListener() {
btnStop.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (recording) {
recorder.stop();
if (usecamera) {
try {
camera.reconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
// recorder.release();
recording = false;
// Let's prepareRecorder so we can record again
prepareRecorder();
}
}
});
}
private void prepareRecorder() {
recorder = new MediaRecorder();
recorder.setPreviewDisplay(surfaceHolder.getSurface());
if (usecamera) {
camera.unlock();
recorder.setCamera(camera);
}
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
recorder.setProfile(camcorderProfile);
if (camcorderProfile.fileFormat == MediaRecorder.OutputFormat.MPEG_4) {
recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
+ new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
+ ".mp4");
} else if (camcorderProfile.fileFormat == MediaRecorder.OutputFormat.MPEG_4) {
recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
+ new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
+ ".mp4");
} else {
recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
+ new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
+ ".mp4");
}
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
public void surfaceCreated(SurfaceHolder holder) {
System.out.println("onsurfacecreated");
if (usecamera) {
camera = Camera.open();
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
System.out.println("onsurface changed");
if (!recording && usecamera) {
if (previewRunning) {
camera.stopPreview();
}
try {
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(camcorderProfile.videoFrameWidth,
camcorderProfile.videoFrameHeight);
p.setPreviewFrameRate(camcorderProfile.videoFrameRate);
camera.setParameters(p);
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
} catch (IOException e) {
e.printStackTrace();
}
prepareRecorder();
if (!recording) {
recording = true;
recorder.start();
}
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
if (recording) {
recorder.stop();
recording = false;
}
recorder.release();
if (usecamera) {
previewRunning = false;
// camera.lock();
camera.release();
}
finish();
}
}
【讨论】：
您可以创建自己的视频录制屏幕
试试这样，首先使用SurfaceView创建一个自定义记录器
public class VideoCapture extends SurfaceView implements SurfaceHolder.Callback {
private MediaRecorder recorder;
private SurfaceHolder holder;
public Context context;
private Camera camera;
public static String videoPath = Environment.getExternalStorageDirectory()
.getPath() +"/YOUR_VIDEO.mp4";
public VideoCapture(Context context) {
super(context);
this.context = context;
init();
}
public VideoCapture(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public VideoCapture(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
@SuppressLint("NewApi")
public void init() {
try {
recorder = new MediaRecorder();
holder = getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
camera = getCameraInstance();
if(android.os.Build.VERSION.SDK_INT > 7)
camera.setDisplayOrientation(90);
camera.unlock();
recorder.setCamera(camera);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
recorder.setOutputFile(videoPath);
} catch (Exception e) {
e.printStackTrace();
}
}
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
}
public void surfaceCreated(SurfaceHolder mHolder) {
try {
recorder.setPreviewDisplay(mHolder.getSurface());
recorder.prepare();
recorder.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public void stopCapturingVideo() {
try {
recorder.stop();
camera.lock();
} catch (Exception e) {
e.printStackTrace();
}
}
@TargetApi(5)
public void surfaceDestroyed(SurfaceHolder arg0) {
if (recorder != null) {
stopCapturingVideo();
recorder.release();
camera.lock();
camera.release();
recorder = null;
}
}
private Camera getCameraInstance() {
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
} catch (Exception e) {
// Camera is not available (in use or does not exist)
}
return c;
}
}
您可以在 Activity 类的布局中使用它
<your_package.VideoCapture
android:id="@+id/videoView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00000000" />
已编辑：-
public class CaptureVideo extends Activity {
private VideoCapture videoCapture;
private Button stop;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video_capture);
videoCapture = (VideoCapture) findViewById(R.id.videoView);
stop= (Button) findViewById(R.id.stop);
stop.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
videoCapture.stopCapturingVideo();
setResult(Activity.RESULT_OK);
finish();
}
});
}
}
希望对你有帮助
【讨论】：
这种方式是使用片段：
public class CaptureVideo extends Fragment implements OnClickListener, SurfaceHolder.Callback{
private Button btnStartRec;
MediaRecorder recorder;
SurfaceHolder holder;
boolean recording = false;
private int randomNum;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
}
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view001 = inflater.inflate(R.layout.capture_video,container,false);
recorder = new MediaRecorder();
initRecorder();
btnStartRec = (Button) view001.findViewById(R.id.btnCaptureVideo);
btnStartRec.setOnClickListener(this);
SurfaceView cameraView = (SurfaceView)view001.findViewById(R.id.surfaceCamera);
holder = cameraView.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
cameraView.setClickable(true);
cameraView.setOnClickListener(this);
return view001;
}
@SuppressLint({ "SdCardPath", "NewApi" })
private void initRecorder() {
Random rn = new Random();
int maximum = 10000000;
int minimum = 00000001;
int range = maximum - minimum + 1;
randomNum = rn.nextInt(range) + minimum + 1 - 10;
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
recorder.setOrientationHint(90);//plays the video correctly
}else{
recorder.setOrientationHint(180);
}
recorder.setOutputFile("/sdcard/MediaAppVideos/"+randomNum+".mp4");
}
private void prepareRecorder() {
recorder.setPreviewDisplay(holder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
//finish();
} catch (IOException e) {
e.printStackTrace();
//finish();
}
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnCaptureVideo:
try{
if (recording) {
recorder.stop();
recording = false;
// Let's initRecorder so we can record again
//initRecorder();
//prepareRecorder();
} else {
recording = true;
recorder.start();
}
}catch(Exception e){
}
default:
break;
}
}
public void surfaceCreated(SurfaceHolder holder) {
prepareRecorder();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
public void surfaceDestroyed(SurfaceHolder holder) {
try {
if (recording) {
recorder.stop();
recording = false;
}
recorder.release();
// finish();
} catch (Exception e) {
}
}
}
xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<SurfaceView
android:id="@+id/surfaceCamera"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="@+id/btnCaptureVideo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Start Recording" />
</RelativeLayout>
【讨论】：