How to limit the recording time by calling the camera of mobile phone in Android
Editor to share with you how Android can use mobile phone camera to limit the length of video recording. I hope you will get something after reading this article. Let's discuss it together.
The details are as follows
Because the server space is limited, the duration of the video must be limited.
First lay out a button in xml and click to start recording. Layout a TextView to display the countdown time.
1. Use Hander+TimerTask to complete timing operation
Private TextView btn_stop;private int recLen = 11 timer timer = new Timer (); / / the countdown is placed after the start button event, see heading 7 where the countdown begins / / timer.schedule (task,1000,1000) Final Handler handler = new Handler () {@ Override public void handleMessage (Message msg) {switch (msg.what) {case 1: btn_stop.setText ("" + recLen); if (recLen 2 * 1024 * 1024) {mediaRecorder.setVideoEncodingBitRate (2 * 1024 * 1024);} else {mediaRecorder.setVideoEncodingBitRate (1024 * 1024) } mediaRecorder.setVideoFrameRate (mProfile.videoFrameRate); mediaRecorder.setVideoSize (1280); mediaRecorder.setOutputFile (mVecordFile.getAbsolutePath ());}
5. Stop recording
Private void stopRecord () {try {if (isRecording & & mediaRecorder! = null) {mediaRecorder.setOnErrorListener (null); mediaRecorder.setPreviewDisplay (null); mediaRecorder.stop (); mediaRecorder.reset (); mediaRecorder.release (); mediaRecorder = null; isRecording = false Log.i (TAG, "" + mVecordFile.toString ()); / / new imageTask (). Execute (mVecordFile); MessageData md = new MessageData (); md.srdatatype = SRDataType. Video is returned; md.Data = mVecordFile.getAbsolutePath (); Intent intent = new Intent (BroadCastParameter.action); intent.putExtra ("data", md); sendBroadcast (intent); / / Fragment page broadcast notification LocalBroadcastManager.getInstance (CustomRecorder.this) .sendbroadcast (intent); finish () } catch (Exception ex) {/ / Toast.makeText (getApplicationContext (), ex.getMessage (), 1). Show ();}}
Turn off the camera
Private void stopCamera () {if (mCamera! = null) {mCamera.setPreviewCallback (null); mCamera.stopPreview (); mCamera.release (); mCamera = null;}}
Click the start recording button
Public void onViewClicked (View view) {if (Build.VERSION.SDK_INT > = 23) {int REQUEST_CODE_CONTACT = 101 / / verify whether for (String str: permissions) {if (this.checkSelfPermission (str)! = PackageManager.PERMISSION_GRANTED) {Toast.makeText (getApplicationContext (), "Storage permission is not authorized", 1) .show (); return } switch (view.getId ()) {/ / start case R.id.btn_start: btn_start.setVisibility (View.GONE); btn_stop.setVisibility (View.VISIBLE) / / this is to determine whether the video file has been created. If not, return boolean creakOk = createRecordDir (); if (! creakOk) {return;} try {mCamera.unlock (); setConfigRecord () MediaRecorder.prepare (); mediaRecorder.start ();} catch (Exception e) {/ / Toast.makeText (getApplicationContext (), e.getMessage (), Toast.LENGTH_LONG). Show ();} StartTime = new Date (System.currentTimeMillis ()); isRecording = true CustomTimer.ReStart (); timer.schedule (task,1000,1000); break; has read this article. I believe you have a certain understanding of "how to use mobile phone camera to limit the length of video recording". If you want to know more about it, welcome to follow the industry information channel. Thank you for reading!
