我正在尝试实现一个应用程序，当启动时，我的自定义视频录制屏幕会自动启动视频录制，并使用我自己的按钮来停止录制和其他按钮。我所做的是设计按钮布局到现在，但如何在后台添加视频录制屏幕..请帮助。！
答案 0 :(得分：6)
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();
}
}
答案 1 :(得分：3)
您可以创建自己的视频录制屏幕
尝试这样，首先使用SurfaceView
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;
}
}
您可以在布局活动类
中使用它<your_package.VideoCapture
android:id="@+id/videoView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00000000" />
EDITED： -
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();
}
});
}
}
希望这会对你有所帮助
答案 2 :(得分：1)
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) {
}
}
}
的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>