iOS仿微信相机拍照、视频录制功能
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2023-12-14 22:28:10
网上有很多自定义相机的例子,这里只是我临时写的一个ios自定义相机(仿微信)拍照、视频录制demo,仅供参考:
用到了下面几个库:
#import...
网上有很多自定义相机的例子,这里只是我临时写的一个ios自定义相机(仿微信)拍照、视频录制demo,仅供参考:
用到了下面几个库:
#import <avfoundation/avfoundation.h> #import <assetslibrary/assetslibrary.h>
在使用的时候需要在info.plist中把相关权限写进去:
privacy - microphone usage description privacy - photo library usage description privacy - camera usage description
我在写这个demo时,是按照微信的样式写的,同样是点击拍照、长按录制视频,视频录制完直接进行播放,这里封装了一个简易的播放器:
m文件
#import "havplayer.h" #import <avfoundation/avfoundation.h> @interface havplayer () @property (nonatomic,strong) avplayer *player;//播放器对象 @end @implementation havplayer /* // only override drawrect: if you perform custom drawing. // an empty implementation adversely affects performance during animation. - (void)drawrect:(cgrect)rect { // drawing code } */ - (instancetype)initwithframe:(cgrect)frame withshowinview:(uiview *)bgview url:(nsurl *)url { if (self = [self initwithframe:frame]) { //创建播放器层 avplayerlayer *playerlayer = [avplayerlayer playerlayerwithplayer:self.player]; playerlayer.frame = self.bounds; [self.layer addsublayer:playerlayer]; if (url) { self.videourl = url; } [bgview addsubview:self]; } return self; } - (void)dealloc { [self removeavplayerntf]; [self stopplayer]; self.player = nil; } - (avplayer *)player { if (!_player) { _player = [avplayer playerwithplayeritem:[self getavplayeritem]]; [self addavplayerntf:_player.currentitem]; } return _player; } - (avplayeritem *)getavplayeritem { avplayeritem *playeritem=[avplayeritem playeritemwithurl:self.videourl]; return playeritem; } - (void)setvideourl:(nsurl *)videourl { _videourl = videourl; [self removeavplayerntf]; [self nextplayer]; } - (void)nextplayer { [self.player seektotime:cmtimemakewithseconds(0, _player.currentitem.duration.timescale)]; [self.player replacecurrentitemwithplayeritem:[self getavplayeritem]]; [self addavplayerntf:self.player.currentitem]; if (self.player.rate == 0) { [self.player play]; } } - (void) addavplayerntf:(avplayeritem *)playeritem { //监控状态属性 [playeritem addobserver:self forkeypath:@"status" options:nskeyvalueobservingoptionnew context:nil]; //监控网络加载情况属性 [playeritem addobserver:self forkeypath:@"loadedtimeranges" options:nskeyvalueobservingoptionnew context:nil]; [[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(playbackfinished:) name:avplayeritemdidplaytoendtimenotification object:self.player.currentitem]; } - (void)removeavplayerntf { avplayeritem *playeritem = self.player.currentitem; [playeritem removeobserver:self forkeypath:@"status"]; [playeritem removeobserver:self forkeypath:@"loadedtimeranges"]; [[nsnotificationcenter defaultcenter] removeobserver:self]; } - (void)stopplayer { if (self.player.rate == 1) { [self.player pause];//如果在播放状态就停止 } } /** * 通过kvo监控播放器状态 * * @param keypath 监控属性 * @param object 监视器 * @param change 状态改变 * @param context 上下文 */ -(void)observevalueforkeypath:(nsstring *)keypath ofobject:(id)object change:(nsdictionary *)change context:(void *)context{ avplayeritem *playeritem = object; if ([keypath isequaltostring:@"status"]) { avplayerstatus status= [[change objectforkey:@"new"] intvalue]; if(status==avplayerstatusreadytoplay){ nslog(@"正在播放...,视频总长度:%.2f",cmtimegetseconds(playeritem.duration)); } }else if([keypath isequaltostring:@"loadedtimeranges"]){ nsarray *array=playeritem.loadedtimeranges; cmtimerange timerange = [array.firstobject cmtimerangevalue];//本次缓冲时间范围 float startseconds = cmtimegetseconds(timerange.start); float durationseconds = cmtimegetseconds(timerange.duration); nstimeinterval totalbuffer = startseconds + durationseconds;//缓冲总长度 nslog(@"共缓冲:%.2f",totalbuffer); } } - (void)playbackfinished:(nsnotification *)ntf { plog(@"视频播放完成"); [self.player seektotime:cmtimemake(0, 1)]; [self.player play]; } @end
另外微信下面的按钮长按会出现圆弧时间条:
m文件
#import "hprogressview.h" @interface hprogressview () /** * 进度值0-1.0之间 */ @property (nonatomic,assign)cgfloat progressvalue; @property (nonatomic, assign) cgfloat currenttime; @end @implementation hprogressview // only override drawrect: if you perform custom drawing. // an empty implementation adversely affects performance during animation. - (void)drawrect:(cgrect)rect { // drawing code cgcontextref ctx = uigraphicsgetcurrentcontext();//获取上下文 plog(@"width = %f",self.frame.size.width); cgpoint center = cgpointmake(self.frame.size.width/2.0, self.frame.size.width/2.0); //设置圆心位置 cgfloat radius = self.frame.size.width/2.0-5; //设置半径 cgfloat starta = - m_pi_2; //圆起点位置 cgfloat enda = -m_pi_2 + m_pi * 2 * _progressvalue; //圆终点位置 uibezierpath *path = [uibezierpath bezierpathwitharccenter:center radius:radius startangle:starta endangle:enda clockwise:yes]; cgcontextsetlinewidth(ctx, 10); //设置线条宽度 [[uicolor whitecolor] setstroke]; //设置描边颜色 cgcontextaddpath(ctx, path.cgpath); //把路径添加到上下文 cgcontextstrokepath(ctx); //渲染 } - (void)settimemax:(nsinteger)timemax { _timemax = timemax; self.currenttime = 0; self.progressvalue = 0; [self setneedsdisplay]; self.hidden = no; [self performselector:@selector(startprogress) withobject:nil afterdelay:0.1]; } - (void)clearprogress { _currenttime = _timemax; self.hidden = yes; } - (void)startprogress { _currenttime += 0.1; if (_timemax > _currenttime) { _progressvalue = _currenttime/_timemax; plog(@"progress = %f",_progressvalue); [self setneedsdisplay]; [self performselector:@selector(startprogress) withobject:nil afterdelay:0.1]; } if (_timemax <= _currenttime) { [self clearprogress]; } } @end
接下来就是相机的控制器了,由于是临时写的,所以用的xib,大家不要直接使用,直接上m文件代码吧:
#import "hvideoviewcontroller.h" #import <avfoundation/avfoundation.h> #import "havplayer.h" #import "hprogressview.h" #import <foundation/foundation.h> #import <assetslibrary/assetslibrary.h> typedef void(^propertychangeblock)(avcapturedevice *capturedevice); @interface hvideoviewcontroller ()<avcapturefileoutputrecordingdelegate> //轻触拍照,按住摄像 @property (strong, nonatomic) iboutlet uilabel *labeltiptitle; //视频输出流 @property (strong,nonatomic) avcapturemoviefileoutput *capturemoviefileoutput; //图片输出流 //@property (strong,nonatomic) avcapturestillimageoutput *capturestillimageoutput;//照片输出流 //负责从avcapturedevice获得输入数据 @property (strong,nonatomic) avcapturedeviceinput *capturedeviceinput; //后台任务标识 @property (assign,nonatomic) uibackgroundtaskidentifier backgroundtaskidentifier; @property (assign,nonatomic) uibackgroundtaskidentifier lastbackgroundtaskidentifier; @property (weak, nonatomic) iboutlet uiimageview *focuscursor; //聚焦光标 //负责输入和输出设备之间的数据传递 @property(nonatomic)avcapturesession *session; //图像预览层,实时显示捕获的图像 @property(nonatomic)avcapturevideopreviewlayer *previewlayer; @property (strong, nonatomic) iboutlet uibutton *btnback; //重新录制 @property (strong, nonatomic) iboutlet uibutton *btnafresh; //确定 @property (strong, nonatomic) iboutlet uibutton *btnensure; //摄像头切换 @property (strong, nonatomic) iboutlet uibutton *btncamera; @property (strong, nonatomic) iboutlet uiimageview *bgview; //记录录制的时间 默认最大60秒 @property (assign, nonatomic) nsinteger seconds; //记录需要保存视频的路径 @property (strong, nonatomic) nsurl *savevideourl; //是否在对焦 @property (assign, nonatomic) bool isfocus; @property (strong, nonatomic) iboutlet nslayoutconstraint *afreshcenterx; @property (strong, nonatomic) iboutlet nslayoutconstraint *ensurecenterx; @property (strong, nonatomic) iboutlet nslayoutconstraint *backcenterx; //视频播放 @property (strong, nonatomic) havplayer *player; @property (strong, nonatomic) iboutlet hprogressview *progressview; //是否是摄像 yes 代表是录制 no 表示拍照 @property (assign, nonatomic) bool isvideo; @property (strong, nonatomic) uiimage *takeimage; @property (strong, nonatomic) uiimageview *takeimageview; @property (strong, nonatomic) iboutlet uiimageview *imgrecord; @end //时间大于这个就是视频,否则为拍照 #define timemax 1 @implementation hvideoviewcontroller -(void)dealloc{ [self removenotification]; } - (void)viewdidload { [super viewdidload]; // do any additional setup after loading the view. uiimage *image = [uiimage imagenamed:@"sc_btn_take.png"]; self.backcenterx.constant = -(screen_width/2/2)-image.size.width/2/2; self.progressview.layer.cornerradius = self.progressview.frame.size.width/2; if (self.hseconds == 0) { self.hseconds = 60; } [self performselector:@selector(hiddentipslabel) withobject:nil afterdelay:4]; } - (void)hiddentipslabel { self.labeltiptitle.hidden = yes; } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of any resources that can be recreated. } - (void)viewwillappear:(bool)animated { [super viewwillappear:animated]; [[uiapplication sharedapplication] setstatusbarhidden:yes]; [self customcamera]; [self.session startrunning]; } -(void)viewdidappear:(bool)animated{ [super viewdidappear:animated]; } -(void)viewdiddisappear:(bool)animated{ [super viewdiddisappear:animated]; [self.session stoprunning]; } - (void)viewwilldisappear:(bool)animated { [super viewwilldisappear:animated]; [[uiapplication sharedapplication] setstatusbarhidden:no]; } - (void)customcamera { //初始化会话,用来结合输入输出 self.session = [[avcapturesession alloc] init]; //设置分辨率 (设备支持的最高分辨率) if ([self.session cansetsessionpreset:avcapturesessionpresethigh]) { self.session.sessionpreset = avcapturesessionpresethigh; } //取得后置摄像头 avcapturedevice *capturedevice = [self getcameradevicewithposition:avcapturedevicepositionback]; //添加一个音频输入设备 avcapturedevice *audiocapturedevice=[[avcapturedevice deviceswithmediatype:avmediatypeaudio] firstobject]; //初始化输入设备 nserror *error = nil; self.capturedeviceinput = [[avcapturedeviceinput alloc] initwithdevice:capturedevice error:&error]; if (error) { plog(@"取得设备输入对象时出错,错误原因:%@",error.localizeddescription); return; } //添加音频 error = nil; avcapturedeviceinput *audiocapturedeviceinput=[[avcapturedeviceinput alloc]initwithdevice:audiocapturedevice error:&error]; if (error) { nslog(@"取得设备输入对象时出错,错误原因:%@",error.localizeddescription); return; } //输出对象 self.capturemoviefileoutput = [[avcapturemoviefileoutput alloc] init];//视频输出 //将输入设备添加到会话 if ([self.session canaddinput:self.capturedeviceinput]) { [self.session addinput:self.capturedeviceinput]; [self.session addinput:audiocapturedeviceinput]; //设置视频防抖 avcaptureconnection *connection = [self.capturemoviefileoutput connectionwithmediatype:avmediatypevideo]; if ([connection isvideostabilizationsupported]) { connection.preferredvideostabilizationmode = avcapturevideostabilizationmodecinematic; } } //将输出设备添加到会话 (刚开始 是照片为输出对象) if ([self.session canaddoutput:self.capturemoviefileoutput]) { [self.session addoutput:self.capturemoviefileoutput]; } //创建视频预览层,用于实时展示摄像头状态 self.previewlayer = [[avcapturevideopreviewlayer alloc] initwithsession:self.session]; self.previewlayer.frame = self.view.bounds;//cgrectmake(0, 0, self.view.width, self.view.height); self.previewlayer.videogravity = avlayervideogravityresizeaspectfill;//填充模式 [self.bgview.layer addsublayer:self.previewlayer]; [self addnotificationtocapturedevice:capturedevice]; [self addgensturerecognizer]; } - (ibaction)oncancelaction:(uibutton *)sender { [self dismissviewcontrolleranimated:yes completion:^{ [utility hideprogressdialog]; }]; } - (void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event { if ([[touches anyobject] view] == self.imgrecord) { plog(@"开始录制"); //根据设备输出获得连接 avcaptureconnection *connection = [self.capturemoviefileoutput connectionwithmediatype:avmediatypeaudio]; //根据连接取得设备输出的数据 if (![self.capturemoviefileoutput isrecording]) { //如果支持多任务则开始多任务 if ([[uidevice currentdevice] ismultitaskingsupported]) { self.backgroundtaskidentifier = [[uiapplication sharedapplication] beginbackgroundtaskwithexpirationhandler:nil]; } if (self.savevideourl) { [[nsfilemanager defaultmanager] removeitematurl:self.savevideourl error:nil]; } //预览图层和视频方向保持一致 connection.videoorientation = [self.previewlayer connection].videoorientation; nsstring *outputfielpath=[nstemporarydirectory() stringbyappendingstring:@"mymovie.mov"]; nslog(@"save path is :%@",outputfielpath); nsurl *fileurl=[nsurl fileurlwithpath:outputfielpath]; nslog(@"fileurl:%@",fileurl); [self.capturemoviefileoutput startrecordingtooutputfileurl:fileurl recordingdelegate:self]; } else { [self.capturemoviefileoutput stoprecording]; } } } - (void)touchesended:(nsset<uitouch *> *)touches withevent:(uievent *)event { if ([[touches anyobject] view] == self.imgrecord) { plog(@"结束触摸"); if (!self.isvideo) { [self performselector:@selector(endrecord) withobject:nil afterdelay:0.3]; } else { [self endrecord]; } } } - (void)endrecord { [self.capturemoviefileoutput stoprecording];//停止录制 } - (ibaction)onafreshaction:(uibutton *)sender { plog(@"重新录制"); [self recoverlayout]; } - (ibaction)onensureaction:(uibutton *)sender { plog(@"确定 这里进行保存或者发送出去"); if (self.savevideourl) { ws(weakself) [utility showprogressdialogtext:@"视频处理中..."]; alassetslibrary *assetslibrary=[[alassetslibrary alloc]init]; [assetslibrary writevideoatpathtosavedphotosalbum:self.savevideourl completionblock:^(nsurl *asseturl, nserror *error) { plog(@"outputurl:%@",weakself.savevideourl); [[nsfilemanager defaultmanager] removeitematurl:weakself.savevideourl error:nil]; if (weakself.lastbackgroundtaskidentifier!= uibackgroundtaskinvalid) { [[uiapplication sharedapplication] endbackgroundtask:weakself.lastbackgroundtaskidentifier]; } if (error) { plog(@"保存视频到相簿过程中发生错误,错误信息:%@",error.localizeddescription); [utility showalltextdialog:kappdelegate.window text:@"保存视频到相册发生错误"]; } else { if (weakself.takeblock) { weakself.takeblock(asseturl); } plog(@"成功保存视频到相簿."); [weakself oncancelaction:nil]; } }]; } else { //照片 uiimagewritetosavedphotosalbum(self.takeimage, self, nil, nil); if (self.takeblock) { self.takeblock(self.takeimage); } [self oncancelaction:nil]; } } //前后摄像头的切换 - (ibaction)oncameraaction:(uibutton *)sender { plog(@"切换摄像头"); avcapturedevice *currentdevice=[self.capturedeviceinput device]; avcapturedeviceposition currentposition=[currentdevice position]; [self removenotificationfromcapturedevice:currentdevice]; avcapturedevice *tochangedevice; avcapturedeviceposition tochangeposition = avcapturedevicepositionfront;//前 if (currentposition == avcapturedevicepositionunspecified || currentposition == avcapturedevicepositionfront) { tochangeposition = avcapturedevicepositionback;//后 } tochangedevice=[self getcameradevicewithposition:tochangeposition]; [self addnotificationtocapturedevice:tochangedevice]; //获得要调整的设备输入对象 avcapturedeviceinput *tochangedeviceinput=[[avcapturedeviceinput alloc]initwithdevice:tochangedevice error:nil]; //改变会话的配置前一定要先开启配置,配置完成后提交配置改变 [self.session beginconfiguration]; //移除原有输入对象 [self.session removeinput:self.capturedeviceinput]; //添加新的输入对象 if ([self.session canaddinput:tochangedeviceinput]) { [self.session addinput:tochangedeviceinput]; self.capturedeviceinput = tochangedeviceinput; } //提交会话配置 [self.session commitconfiguration]; } - (void)onstarttranscribe:(nsurl *)fileurl { if ([self.capturemoviefileoutput isrecording]) { -- self.seconds; if (self.seconds > 0) { if (self.hseconds - self.seconds >= timemax && !self.isvideo) { self.isvideo = yes;//长按时间超过timemax 表示是视频录制 self.progressview.timemax = self.seconds; } [self performselector:@selector(onstarttranscribe:) withobject:fileurl afterdelay:1.0]; } else { if ([self.capturemoviefileoutput isrecording]) { [self.capturemoviefileoutput stoprecording]; } } } } #pragma mark - 视频输出代理 -(void)captureoutput:(avcapturefileoutput *)captureoutput didstartrecordingtooutputfileaturl:(nsurl *)fileurl fromconnections:(nsarray *)connections{ plog(@"开始录制..."); self.seconds = self.hseconds; [self performselector:@selector(onstarttranscribe:) withobject:fileurl afterdelay:1.0]; } -(void)captureoutput:(avcapturefileoutput *)captureoutput didfinishrecordingtooutputfileaturl:(nsurl *)outputfileurl fromconnections:(nsarray *)connections error:(nserror *)error{ plog(@"视频录制完成."); [self changelayout]; if (self.isvideo) { self.savevideourl = outputfileurl; if (!self.player) { self.player = [[havplayer alloc] initwithframe:self.bgview.bounds withshowinview:self.bgview url:outputfileurl]; } else { if (outputfileurl) { self.player.videourl = outputfileurl; self.player.hidden = no; } } } else { //照片 self.savevideourl = nil; [self videohandlephoto:outputfileurl]; } } - (void)videohandlephoto:(nsurl *)url { avurlasset *urlset = [avurlasset assetwithurl:url]; avassetimagegenerator *imagegenerator = [avassetimagegenerator assetimagegeneratorwithasset:urlset]; imagegenerator.appliespreferredtracktransform = yes; // 截图的时候调整到正确的方向 nserror *error = nil; cmtime time = cmtimemake(0,30);//缩略图创建时间 cmtime是表示电影时间信息的结构体,第一个参数表示是视频第几秒,第二个参数表示每秒帧数.(如果要获取某一秒的第几帧可以使用cmtimemake方法) cmtime actucaltime; //缩略图实际生成的时间 cgimageref cgimage = [imagegenerator copycgimageattime:time actualtime:&actucaltime error:&error]; if (error) { plog(@"截取视频图片失败:%@",error.localizeddescription); } cmtimeshow(actucaltime); uiimage *image = [uiimage imagewithcgimage:cgimage]; cgimagerelease(cgimage); if (image) { plog(@"视频截取成功"); } else { plog(@"视频截取失败"); } self.takeimage = image;//[uiimage imagewithcgimage:cgimage]; [[nsfilemanager defaultmanager] removeitematurl:url error:nil]; if (!self.takeimageview) { self.takeimageview = [[uiimageview alloc] initwithframe:self.view.frame]; [self.bgview addsubview:self.takeimageview]; } self.takeimageview.hidden = no; self.takeimageview.image = self.takeimage; } #pragma mark - 通知 //注册通知 - (void)setupobservers { nsnotificationcenter *notification = [nsnotificationcenter defaultcenter]; [notification addobserver:self selector:@selector(applicationdidenterbackground:) name:uiapplicationwillresignactivenotification object:[uiapplication sharedapplication]]; } //进入后台就退出视频录制 - (void)applicationdidenterbackground:(nsnotification *)notification { [self oncancelaction:nil]; } /** * 给输入设备添加通知 */ -(void)addnotificationtocapturedevice:(avcapturedevice *)capturedevice{ //注意添加区域改变捕获通知必须首先设置设备允许捕获 [self changedeviceproperty:^(avcapturedevice *capturedevice) { capturedevice.subjectareachangemonitoringenabled=yes; }]; nsnotificationcenter *notificationcenter= [nsnotificationcenter defaultcenter]; //捕获区域发生改变 [notificationcenter addobserver:self selector:@selector(areachange:) name:avcapturedevicesubjectareadidchangenotification object:capturedevice]; } -(void)removenotificationfromcapturedevice:(avcapturedevice *)capturedevice{ nsnotificationcenter *notificationcenter= [nsnotificationcenter defaultcenter]; [notificationcenter removeobserver:self name:avcapturedevicesubjectareadidchangenotification object:capturedevice]; } /** * 移除所有通知 */ -(void)removenotification{ nsnotificationcenter *notificationcenter= [nsnotificationcenter defaultcenter]; [notificationcenter removeobserver:self]; } -(void)addnotificationtocapturesession:(avcapturesession *)capturesession{ nsnotificationcenter *notificationcenter= [nsnotificationcenter defaultcenter]; //会话出错 [notificationcenter addobserver:self selector:@selector(sessionruntimeerror:) name:avcapturesessionruntimeerrornotification object:capturesession]; } /** * 设备连接成功 * * @param notification 通知对象 */ -(void)deviceconnected:(nsnotification *)notification{ nslog(@"设备已连接..."); } /** * 设备连接断开 * * @param notification 通知对象 */ -(void)devicedisconnected:(nsnotification *)notification{ nslog(@"设备已断开."); } /** * 捕获区域改变 * * @param notification 通知对象 */ -(void)areachange:(nsnotification *)notification{ nslog(@"捕获区域改变..."); } /** * 会话出错 * * @param notification 通知对象 */ -(void)sessionruntimeerror:(nsnotification *)notification{ nslog(@"会话发生错误."); } /** * 取得指定位置的摄像头 * * @param position 摄像头位置 * * @return 摄像头设备 */ -(avcapturedevice *)getcameradevicewithposition:(avcapturedeviceposition )position{ nsarray *cameras= [avcapturedevice deviceswithmediatype:avmediatypevideo]; for (avcapturedevice *camera in cameras) { if ([camera position] == position) { return camera; } } return nil; } /** * 改变设备属性的统一操作方法 * * @param propertychange 属性改变操作 */ -(void)changedeviceproperty:(propertychangeblock)propertychange{ avcapturedevice *capturedevice= [self.capturedeviceinput device]; nserror *error; //注意改变设备属性前一定要首先调用lockforconfiguration:调用完之后使用unlockforconfiguration方法解锁 if ([capturedevice lockforconfiguration:&error]) { //自动白平衡 if ([capturedevice iswhitebalancemodesupported:avcapturewhitebalancemodecontinuousautowhitebalance]) { [capturedevice setwhitebalancemode:avcapturewhitebalancemodecontinuousautowhitebalance]; } //自动根据环境条件开启闪光灯 if ([capturedevice isflashmodesupported:avcaptureflashmodeauto]) { [capturedevice setflashmode:avcaptureflashmodeauto]; } propertychange(capturedevice); [capturedevice unlockforconfiguration]; }else{ nslog(@"设置设备属性过程发生错误,错误信息:%@",error.localizeddescription); } } /** * 设置闪光灯模式 * * @param flashmode 闪光灯模式 */ -(void)setflashmode:(avcaptureflashmode )flashmode{ [self changedeviceproperty:^(avcapturedevice *capturedevice) { if ([capturedevice isflashmodesupported:flashmode]) { [capturedevice setflashmode:flashmode]; } }]; } /** * 设置聚焦模式 * * @param focusmode 聚焦模式 */ -(void)setfocusmode:(avcapturefocusmode )focusmode{ [self changedeviceproperty:^(avcapturedevice *capturedevice) { if ([capturedevice isfocusmodesupported:focusmode]) { [capturedevice setfocusmode:focusmode]; } }]; } /** * 设置曝光模式 * * @param exposuremode 曝光模式 */ -(void)setexposuremode:(avcaptureexposuremode)exposuremode{ [self changedeviceproperty:^(avcapturedevice *capturedevice) { if ([capturedevice isexposuremodesupported:exposuremode]) { [capturedevice setexposuremode:exposuremode]; } }]; } /** * 设置聚焦点 * * @param point 聚焦点 */ -(void)focuswithmode:(avcapturefocusmode)focusmode exposuremode:(avcaptureexposuremode)exposuremode atpoint:(cgpoint)point{ [self changedeviceproperty:^(avcapturedevice *capturedevice) { // if ([capturedevice isfocuspointofinterestsupported]) { // [capturedevice setfocuspointofinterest:point]; // } // if ([capturedevice isexposurepointofinterestsupported]) { // [capturedevice setexposurepointofinterest:point]; // } if ([capturedevice isexposuremodesupported:exposuremode]) { [capturedevice setexposuremode:exposuremode]; } if ([capturedevice isfocusmodesupported:focusmode]) { [capturedevice setfocusmode:focusmode]; } }]; } /** * 添加点按手势,点按时聚焦 */ -(void)addgensturerecognizer{ uitapgesturerecognizer *tapgesture=[[uitapgesturerecognizer alloc]initwithtarget:self action:@selector(tapscreen:)]; [self.bgview addgesturerecognizer:tapgesture]; } -(void)tapscreen:(uitapgesturerecognizer *)tapgesture{ if ([self.session isrunning]) { cgpoint point= [tapgesture locationinview:self.bgview]; //将ui坐标转化为摄像头坐标 cgpoint camerapoint= [self.previewlayer capturedevicepointofinterestforpoint:point]; [self setfocuscursorwithpoint:point]; [self focuswithmode:avcapturefocusmodecontinuousautofocus exposuremode:avcaptureexposuremodecontinuousautoexposure atpoint:camerapoint]; } } /** * 设置聚焦光标位置 * * @param point 光标位置 */ -(void)setfocuscursorwithpoint:(cgpoint)point{ if (!self.isfocus) { self.isfocus = yes; self.focuscursor.center=point; self.focuscursor.transform = cgaffinetransformmakescale(1.25, 1.25); self.focuscursor.alpha = 1.0; [uiview animatewithduration:0.5 animations:^{ self.focuscursor.transform = cgaffinetransformidentity; } completion:^(bool finished) { [self performselector:@selector(onhiddenfocuscursoraction) withobject:nil afterdelay:0.5]; }]; } } - (void)onhiddenfocuscursoraction { self.focuscursor.alpha=0; self.isfocus = no; } //拍摄完成时调用 - (void)changelayout { self.imgrecord.hidden = yes; self.btncamera.hidden = yes; self.btnafresh.hidden = no; self.btnensure.hidden = no; self.btnback.hidden = yes; if (self.isvideo) { [self.progressview clearprogress]; } self.afreshcenterx.constant = -(screen_width/2/2); self.ensurecenterx.constant = screen_width/2/2; [uiview animatewithduration:0.25 animations:^{ [self.view layoutifneeded]; }]; self.lastbackgroundtaskidentifier = self.backgroundtaskidentifier; self.backgroundtaskidentifier = uibackgroundtaskinvalid; [self.session stoprunning]; } //重新拍摄时调用 - (void)recoverlayout { if (self.isvideo) { self.isvideo = no; [self.player stopplayer]; self.player.hidden = yes; } [self.session startrunning]; if (!self.takeimageview.hidden) { self.takeimageview.hidden = yes; } // self.savevideourl = nil; self.afreshcenterx.constant = 0; self.ensurecenterx.constant = 0; self.imgrecord.hidden = no; self.btncamera.hidden = no; self.btnafresh.hidden = yes; self.btnensure.hidden = yes; self.btnback.hidden = no; [uiview animatewithduration:0.25 animations:^{ [self.view layoutifneeded]; }]; } /* #pragma mark - navigation // in a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender { // get the new view controller using [segue destinationviewcontroller]. // pass the selected object to the new view controller. } */ @end
使用也挺简单:
- (ibaction)oncameraaction:(uibutton *)sender { //额 。。由于是demo,所以用的xib,大家根据需求自己更改,该demo只是提供一个思路,使用时不要直接拖入项目 hvideoviewcontroller *ctrl = [[nsbundle mainbundle] loadnibnamed:@"hvideoviewcontroller" owner:nil options:nil].lastobject; ctrl.hseconds = 30;//设置可录制最长时间 ctrl.takeblock = ^(id item) { if ([item iskindofclass:[nsurl class]]) { nsurl *videourl = item; //视频url } else { //图片 } }; [self presentviewcontroller:ctrl animated:yes completion:nil]; }
demo地址也给出来吧:不喜勿碰-_-\
自此就结束啦,写的比较简单,希望能帮助到大家,谢谢!
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。