編輯:關於Android編程
具體表現:
調用MediaRecorder的start()與stop()間隔不能小於1秒(有時候大於1秒也崩),否則必崩。
錯誤信息:
java.lang.RuntimeException: stop failed. at android.media.MediaRecorder.stop(Native Method)
解決辦法:
在stop以前調用setOnErrorListener(null);就行了!
相關代碼:
/** 開始錄制 */ @Override public MediaPart startRecord() { if (mMediaObject != null && mSurfaceHolder != null && !mRecording) { MediaPart result = mMediaObject.buildMediaPart(mCameraId, ".mp4"); try { if (mMediaRecorder == null) { mMediaRecorder = new MediaRecorder(); mMediaRecorder.setOnErrorListener(this); } else { mMediaRecorder.reset(); } // Step 1: Unlock and set camera to MediaRecorder camera.unlock(); mMediaRecorder.setCamera(camera); mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface()); // Step 2: Set sources mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);//before setOutputFormat() mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);//before setOutputFormat() mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); //設置視頻輸出的格式和編碼 CamcorderProfile mProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P); // mMediaRecorder.setProfile(mProfile); mMediaRecorder.setVideoSize(640, 480);//after setVideoSource(),after setOutFormat() mMediaRecorder.setAudioEncodingBitRate(44100); if (mProfile.videoBitRate > 2 * 1024 * 1024) mMediaRecorder.setVideoEncodingBitRate(2 * 1024 * 1024); else mMediaRecorder.setVideoEncodingBitRate(mProfile.videoBitRate); mMediaRecorder.setVideoFrameRate(mProfile.videoFrameRate);//after setVideoSource(),after setOutFormat() mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);//after setOutputFormat() mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);//after setOutputFormat() //mMediaRecorder.setVideoEncodingBitRate(800); // Step 4: Set output file mMediaRecorder.setOutputFile(result.mediaPath); // Step 5: Set the preview output // mMediaRecorder.setOrientationHint(90);//加了HTC的手機會有問題 Log.e("Yixia", "OutputFile:" + result.mediaPath); mMediaRecorder.prepare(); mMediaRecorder.start(); mRecording = true; return result; } catch (IllegalStateException e) { e.printStackTrace(); Log.e("Yixia", "startRecord", e); } catch (IOException e) { e.printStackTrace(); Log.e("Yixia", "startRecord", e); } catch (Exception e) { e.printStackTrace(); Log.e("Yixia", "startRecord", e); } } return null; } /** 停止錄制 */ @Override public void stopRecord() { long endTime = System.currentTimeMillis(); if (mMediaRecorder != null) { //設置後不會崩 mMediaRecorder.setOnErrorListener(null); mMediaRecorder.setPreviewDisplay(null); try { mMediaRecorder.stop(); } catch (IllegalStateException e) { Log.w("Yixia", "stopRecord", e); } catch (RuntimeException e) { Log.w("Yixia", "stopRecord", e); } catch (Exception e) { Log.w("Yixia", "stopRecord", e); } } if (camera != null) { try { camera.lock(); } catch (RuntimeException e) { Log.e("Yixia", "stopRecord", e); } } mRecording = false; } /** 釋放資源 */ @Override public void release() { super.release(); if (mMediaRecorder != null) { mMediaRecorder.setOnErrorListener(null); try { mMediaRecorder.release(); } catch (IllegalStateException e) { Log.w("Yixia", "stopRecord", e); } catch (Exception e) { Log.w("Yixia", "stopRecord", e); } } mMediaRecorder = null; } @Override public void onError(MediaRecorder mr, int what, int extra) { try { if (mr != null) mr.reset(); } catch (IllegalStateException e) { Log.w("Yixia", "stopRecord", e); } catch (Exception e) { Log.w("Yixia", "stopRecord", e); } if (mOnErrorListener != null) mOnErrorListener.onVideoError(what, extra); }
以上就是對Android MediaRecorder 資料整理,後續繼續補充,有需要的朋友可以參考下。
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