一种非AirPlay的方法来实现IOS录屏

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;
        }
    });

}

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//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];
        }
    }];
}

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//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];
    });
}

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//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];
        }
    });
}

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#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 <NSString *> *)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"];
        });
    }
}

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#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:(NSDictionaryid> *)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");
        }
    }
}

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//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];
}

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//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;
    }
}

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