ios 自带录屏框架replayKit的使用

前几个月第一次做关于ios录屏的功能,在网上看到有关于replaykit的介绍,总结之后集成到项目中,初步达到了项目要求的录屏的功能,但是在后续的测试发现,有录屏出现黑屏的情况,也有不能保存到系统相册的情况,后来及时改改逻辑,调用顺序就解决,现在是没什么问题了,但是感觉也不是太稳定,还没正式的使用,还不能确定不会出现问题,现在,把代码贴出来,欢迎指导指正

replaykit是ios9后出的,所以replaykit支持ios9+录屏,

//开始录屏
- (void)startrecoder
{
//将开启录屏功能的代码放在主线程执行
    dispatch_async(dispatch_get_main_queue(), ^{
        if ([[rpscreenrecorder sharedrecorder] isavailable] && [self issystemversionok]) { //判断硬件和ios版本是否支持录屏
            nslog(@"支持replaykit录制");
            //这是录屏的类
            rpscreenrecorder* recorder = rpscreenrecorder.sharedrecorder;
            recorder.delegate = self;
            __weak typeof (self)weakself = self;
            mbprogresshud *hud;
            hud = [mbprogresshud showhudaddedto:self.view animated:yes];
            hud.maskview.hidden = no;
            hud.labeltext = nslocalizedstring(@"正在启动录屏...", @"hud loading title");
            [self delay:8 execute:^{
                if (hud.hidden == no) {
                    hud.hidden = yes;
                    [self showalert:@"录屏启动失败" andmessage:@"请重试"];
                }
            }];
            //在此可以设置是否允许麦克风（传yes即是使用麦克风，传no则不是用麦克风）
            recorder.microphoneenabled = yes;
            recorder.cameraenabled = yes;

            //开起录屏功能
            [recorder startrecordingwithhandler:^(nserror * _nullable error) {

   //在此可以设置是否允许麦克风（传yes即是使用麦克风，传no则不是用麦克风）(ios 后被废弃了 下面的这个开始录屏)
//            [recorder startrecordingwithmicrophoneenabled:yes handler:^(nserror * _nullable error) {
            recorder.microphoneenabled = yes;
                if (error) {
                    hud.hidden = yes;
                    isdecoderscreen = 0;
                    mbprogresshud *hud = [mbprogresshud showhudaddedto:self.view animated:yes];
                    hud.mode = mbprogresshudmodetext;
                    hud.labeltext = @"录屏启动失败!\n请重试";
                    hud.margin = 10.f;
                    hud.yoffset = 150.f;
                    hud.removefromsuperviewonhide = yes;
                    [hud hide:yes afterdelay:4];
                    nslog(@"========%@",error.description);
                    _decoderbutton.selected = no;
                } else {
                    if (recorder.recording) {
                        _decoderbutton.selected = yes;
                        //记录是否开始录屏 系统也有一个再带的检测是否在录屏的方法 (@property (nonatomic, readonly, getter=isrecording) bool recording;)
                        isdecoderscreen = 1;
                        hud.hidden = yes;
                    }
                }
            }];
        } else {
            [self showalert:@"设备不支持录制" andmessage:@"升级ios系统"];
            return;
        }
    });

}

//结束录屏
- (void)stopdecoder
{   __weak typeof (self)weakself = self;
    [[rpscreenrecorder sharedrecorder] stoprecordingwithhandler:^(rppreviewviewcontroller *previewviewcontroller, nserror *  error){
        _rppreview = previewviewcontroller;
        if (error) {
            nslog(@"这里关闭有误%@",error.description);
        } else {
            [_rppreview setpreviewcontrollerdelegate:self];
            _decoderbutton.selected = no;
            isdecoderscreen = 0;
//在结束录屏时显示预览画面            
[weakself showvideopreviewcontroller:_rppreview withanimation:yes];
        }
    }];
}

//显示视频预览页面,animation=是否要动画显示
- (void)showvideopreviewcontroller:(rppreviewviewcontroller *)previewcontroller withanimation:(bool)animation {
    __weak typeof (self) weakself = self;
    //ui需要放到主线程
    dispatch_async(dispatch_get_main_queue(), ^{
        cgrect rect = previewcontroller.view.frame;
        if (animation) {
            rect.origin.x += rect.size.width;
            previewcontroller.view.frame = rect;
            rect.origin.x -= rect.size.width;
            [uiview animatewithduration:0.3 animations:^(){
                previewcontroller.view.frame = rect;
            } completion:^(bool finished){
            }];
        } else {
            previewcontroller.view.frame = rect;
        }

        [weakself.view addsubview:previewcontroller.view];
        [weakself addchildviewcontroller:previewcontroller];
    });
}

//关闭视频预览页面，animation=是否要动画显示
- (void)hidevideopreviewcontroller:(rppreviewviewcontroller *)previewcontroller withanimation:(bool)animation {
    //ui需要放到主线程
    dispatch_async(dispatch_get_main_queue(), ^{
        cgrect rect = previewcontroller.view.frame;
        if (animation) {
            rect.origin.x += rect.size.width;
            [uiview animatewithduration:0.3 animations:^(){
                previewcontroller.view.frame = rect;
            } completion:^(bool finished){

                    //移除页面
                    [previewcontroller.view removefromsuperview];
                    [previewcontroller removefromparentviewcontroller];
            }];
        } else {
                //移除页面
                [previewcontroller.view removefromsuperview];
                [previewcontroller removefromparentviewcontroller];
        }
    });
}

#pragma mark -rppreviewviewcontrollerdelegate
//关闭的回调 
- (void)previewcontrollerdidfinish:(rppreviewviewcontroller *)previewcontroller {
    if (issave == 1) {
        //这个地方我添加了一个延时,我发现这样保存不到系统相册的情况好多了
dispatch_after(dispatch_time(dispatch_time_now, (int64_t)(4 * nsec_per_sec)), dispatch_get_main_queue(), ^{
            [self hidevideopreviewcontroller:_rppreview withanimation:yes];
        });

        issave = 0;
    }else
    {
        dispatch_async(dispatch_get_main_queue(), ^{
            uialertaction *queding = [uialertaction actionwithtitle:@"确定" style:uialertactionstyledefault handler:^(uialertaction * _nonnull action) {
                [self hidevideopreviewcontroller:_rppreview withanimation:yes];
//                dispatch_async(dispatch_get_main_queue(), ^{
//                                [weakself.rppreview dismissviewcontrolleranimated:yes completion:nil];
//                            });
                issave = 0;
            }];
            uialertaction *actioncancel = [uialertaction actionwithtitle:@"取消" style:uialertactionstylecancel handler:nil];
            uialertcontroller *alert = [uialertcontroller alertcontrollerwithtitle:@"提示" message:@"录制未保存\n确定要取消吗" preferredstyle:uialertcontrollerstylealert];

            [alert addaction:actioncancel];
            [alert addaction:queding];
            [self presentviewcontroller:alert animated:no completion:nil];
        });
    }
}
//选择了某些功能的回调（如分享和保存）
- (void)previewcontroller:(rppreviewviewcontroller *)previewcontroller didfinishwithactivitytypes:(nsset  *)activitytypes {
    __weak typeof (self)weakself = self;
    if ([activitytypes containsobject:@"com.apple.uikit.activity.savetocameraroll"]) {
        issave = 1;
        nslog(@"***************************");
  //这个地方我延时执行,等预览画面移除后再显示提示框    
dispatch_after(dispatch_time(dispatch_time_now, (int64_t)(4 * nsec_per_sec)), dispatch_get_main_queue(), ^{
            dispatch_async(dispatch_get_main_queue(), ^{
                [weakself showalert:@"保存成功" andmessage:@"已经保存到系统相册"];
            });
        });
    }
    if ([activitytypes containsobject:@"com.apple.uikit.activity.copytopasteboard"]) {
        dispatch_async(dispatch_get_main_queue(), ^{
            [weakself showalert:@"复制成功" andmessage:@"已经复制到粘贴板"];
        });
    }
}

#pragma mark ====rpscreendelegate===
- (void)screenrecorderdidchangeavailability:(rpscreenrecorder *)screenrecorder
{
//    [screenrecorder addobserver:self forkeypath:@"recording" options:nskeyvalueobservingoptionnew context:nil];
//    [screenrecorder setvalue:@"1" forkey:@"recording"];
    nslog(@" delegate ======%@",screenrecorder);
}

- (void)screenrecorder:(rpscreenrecorder *)screenrecorder didstoprecordingwitherror:(nserror *)error previewviewcontroller:(nullable rppreviewviewcontroller *)previewviewcontroller
{
    [_rppreview setpreviewcontrollerdelegate:self];
    _decoderbutton.selected = no;
    isdecoderscreen = 0;
    [self showvideopreviewcontroller:_rppreview withanimation:yes];
}

- (void)observevalueforkeypath:(nsstring *)keypath ofobject:(id)object change:(nsdictionary *)change context:(void *)context
{
    if ([keypath isequaltostring:@"recording"]) {
        nslog(@"keypath === %@",object);
        if ([change valueforkey:@"recording"] == 0) {
            nslog(@"可以录制");
        }else
        {
            nslog(@"++++++++++++不可以");
        }
    }
}

//显示弹框提示
- (void)showalert:(nsstring *)title andmessage:(nsstring *)message {
    if (!title) {
        title = @"";
    }
    if (!message) {
        message = @"";
    }
    uialertaction *actioncancel = [uialertaction actionwithtitle:@"好的" style:uialertactionstylecancel handler:nil];
    uialertcontroller *alert = [uialertcontroller alertcontrollerwithtitle:title message:message preferredstyle:uialertcontrollerstylealert];
    [alert addaction:actioncancel];
    [self presentviewcontroller:alert animated:no completion:nil];
}

//判断对应系统版本是否支持replaykit
- (bool)issystemversionok {
    if ([[uidevice currentdevice].systemversion floatvalue] < 9.0) {
        return no;
    } else {
        return yes;
    }
}