首先,我们需要在应用的AndroidManifest.xml文件中声明我们的权限: <manifestxmlns:android="package="com.example.yourapp"><uses-permissionandroid:name="android.permission.READ_MEDIA_IMAGES"/><uses-permissionandroid:name="android.permission.READ_MEDIA_VIDEO"/><applicationandroid:allowBackup="true"android:icon...
int[]grantResults){if(requestCode==PERMISSION_REQUEST_CODE){if(grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED){// 如果用户授予 READ_MEDIA_VIDEO 权限,则加载和显示视频文件loadVideo();}}}privatevoidloadVideo(){ContentResolvercontentResolver=getContentResolver();UrivideosUri=Media...
ErrorStorageRead ErrorStorageWrite ErrorUnknown ErrorUnsupportedOperation ErrorZeroSubsamples 属性 MediaDrm.ExpirationUpdateEventArgs MediaDrm.IHdcpLevel MediaDrm.IOnEventListener MediaDrm.IOnExpirationUpdateListener MediaDrm.IOnKeyStatusChangeListener MediaDrm.IOnSessionLostStateListener MediaDrm.IS...
The dead object error code is not returned if some data was successfully transferred. In this case, the error is returned at the next read()</li> <li>#ERROR in case of other error</li> </ul> Attributes RegisterAttribute Remarks Reads audio data from the audio hardware for recording ...
Android在应用层提供丰富的音视频多媒体接口,上一篇文章已经探讨:MediaPlayer、MediaCodec、AudioTrack、MediaMuxer、MediaExtractor。本文主要介绍MediaRecorder、AudioRecord、MediaMetadataRetriever、MediaProjectionManager、AudioManager,并且结合代码实例,希望能让大家对Android多媒体有深刻认识。
MediaDrm.MediaDrmEventArgs MediaDrm.MediaDrmStateException MediaDrm.MetricsConstants MediaDrm.PlaybackComponent MediaDrm.ProvisionRequest MediaDrm.SessionException MediaDrm.SessionLostStateEventArgs MediaDrmEventType MediaDrmException MediaDrmKeyType MediaDrmResetException MediaDrmStatusCode MediaError MediaExtractor...
MediaDrm.MediaDrmEventArgs MediaDrm.MediaDrmStateException MediaDrm.MetricsConstants MediaDrm.PlaybackComponent MediaDrm.ProvisionRequest MediaDrm.SessionException MediaDrm.SessionLostStateEventArgs MediaDrmEventType MediaDrmException MediaDrmKeyType MediaDrmResetException MediaDrmStatusCode MediaError MediaExtractor...
注意: 1)当应用已经在使用系统的 照片选择器,则无需执行任何操作即可支持此变更; 2)READ_MEDIA_IMAGES和READ_MEDIA_VIDEO仅在 Android13 或以上的版本才能使用; 新增了一个READ_MEDIA_VISUAL_USER_SELECTED权限,属于 Dangerous 级别。用于在用户点击自定义的照片选择器需要申请访问照片和视频的权限时使用,这样就不用...
内部绑定一个相机纹理mTextureId = mInternalTexDrawer.createTextureObject();//使用纹理创建SurfaceTexture 用来接收相机数据mCameraTexture =newSurfaceTexture(mTextureId); ... mSimpleEncoder =newSimpleEncoder(mStreamWidth, mStreamHeight, mInitFrameRate, MediaFormat.MIMETYPE_VIDEO_AVC,true, mEncodeInfo);...
//获取视频时长,单位:毫秒(ms) String duration_s = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION); long duration = Long.valueOf(duration_s); //获取视频帧数 String count_s = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_FRAME_COUNT); long count = Long....