iOS Team / LiveVideoCloud · Files

//
//  LVCLiveViewController.m
//  LiveVideoCloud
//
//  Created by 张旭 on 2017/3/7.
//  Copyright © 2017年 cnlive. All rights reserved.
//

#import "LVCLiveViewController.h"
#import <CNLivePlayerSDK/CNLiveGPUStreamerKit.h>
#import <CNLivePlayerSDK/CNLiveWebcastManager.h>
#import "FilterFunctionView.h"
#import "LVCUGCLivePrepareView.h"
#import "LiveBaseView.h"
#import "LVCUGCLiveEndView.h"
#import "LVCVerifyLiveAuthService.h"
#import "LVCVerifyViewController.h"
#import "LoginViewController.h"

@interface LVCLiveViewController ()<UIGestureRecognizerDelegate, UIAlertViewDelegate, UINavigationControllerDelegate> {
    
    BOOL _isStreaming;
}

@property (nonatomic, strong) LVCUGCLivePrepareView *prepareView;

@property (nonatomic, strong) UIView *captureView;

@property (nonatomic, strong) CNLiveGPUStreamerKit *kitCN;

@property (nonatomic, strong) FilterFunctionView *filterView;

@property (nonatomic, strong) UIButton *quitButton;

@property (nonatomic, strong) UIButton *openFilterButton;

@property (nonatomic, strong) UIButton *changeCameraButton;

@property (nonatomic, strong) UIButton *openFlashButton;

@property (nonatomic ,strong) LiveBaseView * _Nullable liveBaseView;

@property (nonatomic, strong) LVCUGCLiveEndView *endView;

@end

@implementation LVCLiveViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.navigationController.delegate = self;
    self.view.backgroundColor = [UIColor whiteColor];
    
    [self verifyLiveAuthority];
}

#pragma mark - 验证是否有主播权限
- (void)verifyLiveAuthority {
    
    [SVProgressHUD setDefaultMaskType:SVProgressHUDMaskTypeClear];
    [SVProgressHUD showWithStatus:@"正在加载..."];
    [LVCVerifyLiveAuthService verifyLiveAuthWithHandler:^(id data, NSError *error) {
        
        [SVProgressHUD dismiss];
        if (error) {
            NSLog(@"失败===>error:%@",error);
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:[NSString stringWithFormat:@"抱歉, 鉴权失败~ "] delegate:self cancelButtonTitle:@"好的" otherButtonTitles: nil];
            alert.tag = 1005;
            [alert show];
            
            return ;
        }
        
        NSLog(@"成功===>data:%@",data);
        
        int status = [data[@"status"] intValue];
        if (status == -1) {          //未审核
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"亲, 完成实名认证就可以开播啦,现在就去认证吧!" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"去认证", nil];
            alert.tag = 1001;
            [alert show];
        } else if (status == 1) {    //审核中
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"亲, 正在审核中..." delegate:self cancelButtonTitle:@"好的" otherButtonTitles: nil];
            alert.tag = 1002;
            [alert show];
        } else if (status == 2) {   //审核失败
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"抱歉, 审核失败~" delegate:self cancelButtonTitle:@"好的" otherButtonTitles: nil];
            alert.tag = 1003;
            [alert show];
        } else if (status == 3) {   //启用
            //开始推流
            [self.view addSubview:self.captureView];
            [self.view addSubview:self.prepareView];
            [self.view addSubview:self.quitButton];
            [self.view addSubview:self.changeCameraButton];
            [self.view addSubview:self.openFilterButton];
            [self.view addSubview:self.openFlashButton];
            [self.view addSubview:self.filterView];
            
            // 初始化推流
            // 生成随机活动号
            NSInteger time = [[NSDate date] timeIntervalSince1970];
            NSString *timeString = [NSString stringWithFormat:@"%ld", (long)time];
            NSString *random = [NSString stringWithFormat:@"%d%d%d%d%d",arc4random()%9,arc4random()%9,arc4random()%9,arc4random()%9,arc4random()%9];
            NSString *activityId = [NSString stringWithFormat:@"%@%@",timeString,random];
        
//            _kitCN = [[CNLiveGPUStreamerKit alloc] initWithDefaultConfigWithActivityId:activityId channelId:@"iOStest" isHorizontalScreen:@"0"];
            
            _kitCN = [[CNLiveGPUStreamerKit alloc] initCNLiveKitWithInterruptConfigWithPureAudioMode:NO];
            _kitCN.activityId = activityId;
            _kitCN.channelId = data[@"channelId"];
            
            // 主播ID
            NSString *channelName = data[@"channelName"];
            NSString *coverImgUrl = data[@"coverImgUrl"];

            // 封面图
            _kitCN.coverImgUrl =  coverImgUrl;
            // 昵称  头像
            NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:channelName, @"name", [UserInformationModel manager].faceUrl, @"iconUrl", nil];
            _kitCN.extensions = [self dictionaryToJson:userInfo];
        
            // 设置推流配置
            [self setStreamerCfg];
        
            [self addObservers];
        
            UITapGestureRecognizer * singleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onTap:)];
            singleRecognizer.delegate = self;
            [self.captureView addGestureRecognizer:singleRecognizer];
            
        } else {   //禁用
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"抱歉, 您没有权限~" delegate:self cancelButtonTitle:@"好的" otherButtonTitles: nil];
            alert.tag = 1004;
            [alert show];
        }

    }];
}

#pragma mark - UIAlertViewDelegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    
    if (alertView.tag == 1001 && buttonIndex == 1) {  // 未审核 去认证
        
        NSLog(@"未审核 去认证");
        LVCVerifyViewController *vc = [[LVCVerifyViewController alloc] init];
        [self.navigationController pushViewController:vc animated:YES];
        
    } else {
        
        NSLog(@"弹出");
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

#pragma mark - UINavigationControllerDelegate
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    BOOL isHomePage = [viewController isKindOfClass:[self class]];
    
    [self.navigationController setNavigationBarHidden:isHomePage animated:YES];
}

#pragma mark - initialization Streamer
- (void)setStreamerCfg {
    //采集配置
    _kitCN.capPreset = AVCaptureSessionPreset640x480;
    _kitCN.previewDimension = CGSizeMake(360, 640);
    _kitCN.streamDimension = CGSizeMake(360, 640);
    _kitCN.videoFPS = 15;
    _kitCN.cameraPosition = AVCaptureDevicePositionFront;
    
    //推流配置
    _kitCN.streamerBase.videoCodec = CNLiveVideoCodec_AUTO;
    _kitCN.streamerBase.videoInitBitrate = 900;
    _kitCN.streamerBase.videoMaxBitrate = 900;
    _kitCN.streamerBase.videoMinBitrate = 300;
    _kitCN.streamerBase.maxKeyInterval = 2;
    _kitCN.streamerBase.audiokBPS = 48;
    
    // 如果有耳机,麦克风
    if ([CNLiveAudioCapture isHeadsetPluggedIn]) {
        // 音频采集器  自动播放采集声音
        [_kitCN.audioCapture setBPlayCapturedAudio:YES];
    }
    
    //设置画面朝向
    [_kitCN setVideoOrientationBy:[[UIApplication sharedApplication] statusBarOrientation]];
    
    // 启动预览
    [_kitCN startPreview:self.captureView];
    
}

- (LiveBaseView *)liveBaseView
{
    if (!_liveBaseView)
    {
        _liveBaseView = [LiveBaseView liveBaseView];
        _liveBaseView.jumpType = JumpControllerTypePresent;
        _liveBaseView.viewController = self;
        _liveBaseView.backgroundColor = [UIColor clearColor];
        [_liveBaseView.closeBtn addTarget:self action:@selector(quitBtnClick) forControlEvents:UIControlEventTouchUpInside];
    }
    return _liveBaseView;
}

#pragma mark - UIButton Action  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- (void)startCapture:(UIButton *)button {   // 开始推流

    // 设置标题
    if (_prepareView.titleTextField.text) {
        _kitCN.activityName = _prepareView.titleTextField.text;
    } else {
        _kitCN.activityName = @"主播很懒,没有标题~";
    }
    
    [_openFilterButton removeFromSuperview];
    [_changeCameraButton removeFromSuperview];
    [_openFlashButton removeFromSuperview];
    _openFilterButton = nil;
    _changeCameraButton = nil;
    _openFlashButton = nil;

    [_prepareView removeFromSuperview];
    
    [_kitCN startStream:^{
        NSLog(@"开启推流成功 ------- success");
        
        _isStreaming = YES;
        [_quitButton removeFromSuperview];
        [self.view insertSubview:self.liveBaseView atIndex:1];
        [self.liveBaseView.animationBaseView addSubview:self.openFilterButton];
        [self.liveBaseView.animationBaseView addSubview:self.changeCameraButton];
        [self.liveBaseView.animationBaseView addSubview:self.openFlashButton];
        
    } failure:^(NSDictionary *errorDic) {
        //NSString *str=[[NSMutableString alloc] initWithData:errorDic[@"errorMessage"] encoding:NSUTF8StringEncoding];
        NSLog(@"%@",errorDic);
        [self toast:errorDic[@"errorMessage"]];
    }];
}


- (void)openFilter:(UIButton *)button {  // 美颜滤镜
    
    button.selected = !button.selected;
    
    if (button.selected) {
        
        _filterView.hidden = NO;
        
        __weak LVCLiveViewController *weakselff = self;
        
        _filterView.filterViewBlock = ^(float grindRatio , float whitenRatio, float intensity){
            
            [weakselff.kitCN.beautifyFaceFilter filterAdjustingParameterWithGrindRatio:grindRatio
                                                                          whitenRatio:whitenRatio
                                                                            intensity:intensity];
        };
        
        _filterView.currentTypeBlock = ^(NSInteger currentType){
            [weakselff.kitCN.beautifyFaceFilter  setBeautyType:currentType];
        };
        
        _filterView.currentIdxBlock = ^(NSInteger currentIdx){
            weakselff.kitCN.beautifyFaceFilter.curEffectIdx = currentIdx;
        };
        
    } else {
        
        _filterView.hidden = YES;
    }
}


- (void)changeCamera:(UIButton *)button {   // 转换前后置摄像头
    
    button.selected = !button.selected;
    _openFlashButton.hidden = !_openFlashButton.hidden;
//        if (button.selected) {
//            _kitCN.cameraPosition = AVCaptureDevicePositionBack;
//        }else{
//            _kitCN.cameraPosition = AVCaptureDevicePositionFront;
//        }
    [_kitCN switchCamera];
    
}


- (void)openFlash:(UIButton *)button {   // 闪光灯
    
    button.selected = !button.selected;
    [_kitCN toggleTorch];
    //    [_kitCN setTorchMode:AVCaptureTorchModeOn];
}


- (void)quitBtnClick {    // 退出
    
    if (_isStreaming) {
        [self.view addSubview:self.endView];
    } else {
        if (_kitCN.captureState == CNLiveCaptureStateCapturing) {
            [_kitCN stopPreview];
        }
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

- (void)continueButtonClick {
    
    [_endView removeFromSuperview];
}

- (void)endButtonClick {
    
    if (_kitCN.streamState == CNLiveStreamStateConnected) {
        [_kitCN stopStream];
    }
    [self dismissViewControllerAnimated:YES completion:nil];
}


#pragma mark - UIGestureRecognizer Action !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- (void)onTap:(UIGestureRecognizer *)sender {  //对焦与曝光
    
    CGPoint current = [sender locationInView:self.view];
    CGPoint point = [self convertToPointOfInterestFromViewCoordinates:current];
    [_kitCN exposureAtPoint:point];
    [_kitCN focusAtPoint:point];
    
    if ([_prepareView.titleTextField isFirstResponder]) {
        [_prepareView.titleTextField resignFirstResponder];
    }
}

#pragma mark - notification  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- (void)enterBg {   // 进入后台
    
    [_kitCN appEnterBackground];
}

- (void)becameActive {   // 回到前台
    
    [_kitCN appBecomeActive];
}

- (void)captureStateChange {   // 采集状态改变
    
    if ( _kitCN.captureState == CNLiveCaptureStateIdle){
        //初始化时状态为空闲
        NSLog(@"---------CNLiveCaptureStateIdle");
        return;
    }
    else if (_kitCN.captureState == CNLiveCaptureStateCapturing ) {
        //设备工作中
        NSLog(@"---------CNLiveCaptureStateCapturing");
        return;
    }
    else if (_kitCN.captureState == CNLiveCaptureStateClosingCapture ) {
        //关闭采集设备中
        NSLog(@"---------CNLiveCaptureStateClosingCapture");
        return;
    }
    else if (_kitCN.captureState == CNLiveCaptureStateDevAuthDenied ) {
        //设备授权被拒绝
        NSLog(@"---------CNLiveCaptureStateDevAuthDenied");
        [self toast:@"设备未授权,请授权~"];
        
        return;
    }
    else if (_kitCN.captureState == CNLiveCaptureStateParameterError ) {
        // 参数错误，无法打开
        NSLog(@"---------CNLiveCaptureStateParameterError");
        
        return;
    }
    else if (_kitCN.captureState == CNLiveCaptureStateDevBusy ) {
        //设备正忙，请稍后尝试
        NSLog(@"---------CNLiveCaptureStateDevBusy");
        
    }
}

- (void)streamStateChange {   // 推流状态改变
    
    if (_kitCN.streamState == CNLiveStreamStateIdle) {
        
        NSLog(@"---------CNLiveStreamStateIdle");
    }
    
    if (_kitCN.streamState == CNLiveStreamStateConnecting) {
        
        NSLog(@"---------CNLiveStreamStateConnecting");
    }
    
    if (_kitCN.streamState == CNLiveStreamStateConnected) {
        
        NSLog(@"---------CNLiveStreamStateConnected");
    }
    
    //断开推流中
    if ( _kitCN.streamState == CNLiveStreamStateDisconnecting) {
        
        NSLog(@"---------CNLiveStreamStateDisconnecting");
    }
    
    //结束推流成功
    if ( _kitCN.streamState == CNLiveStopStreamSuccess) {
        
        NSLog(@"---------CNLiveStopStreamSuccess");
    }
    
    //结束推流失败
    if ( _kitCN.streamState == CNLiveStopStreamFailure) {
        
        NSLog(@"---------CNLiveStopStreamFailure");
    }
    
    //推流出错
    if (_kitCN.streamState == CNLiveStreamStateError) {
        
        NSLog(@"---------CNLiveStreamStateError");
        [self onStreamError];
    }
    
}

- (void)onStreamError {   // 推流失败
    
    CNLiveStreamErrorCode err = _kitCN.streamErrorCode;
    
    NSLog(@"onErr: %lu ", (unsigned long) err);
    
    if ( CNLiveStreamErrorCode_CNLiveAUTHFAILED == err ) {
        
    }
    else if ( CNLiveStreamErrorCode_CODEC_OPEN_FAILED == err) {
        
    }
    else if ( CNLiveStreamErrorCode_CONNECT_FAILED == err) {

    }
    else if ( CNLiveStreamErrorCode_CONNECT_BREAK == err) {

    }
    else if ( CNLiveStreamErrorCode_ABNORMAL == err) {

        [self toast:@"推流异常中断~~"];
        [self tryReconnect];
        
    } else if (err == CNLiveStreamErrorCode_CODEC_OPEN_FAILED) {
        NSLog(@"video codec open failed, try software codec");
        // 换个编码类型重新尝试
        _kitCN.streamerBase.videoCodec = CNLiveVideoCodec_VT264;
        [self tryReconnect];
        
    } else if (err == CNLiveStreamErrorCode_CONNECT_BREAK || err == CNLiveStreamErrorCode_AV_SYNC_ERROR) {
        [self tryReconnect];
    }
    
}


- (void) tryReconnect {   // 重试
    
    dispatch_time_t delay = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC));
    dispatch_after(delay, dispatch_get_main_queue(), ^{
        
        NSLog(@"try again");
        
        [_kitCN stopStream];
        
        [_kitCN startStream:^{
            NSLog(@"重试开启推流成功 ------- success");
            
        } failure:^(NSDictionary *errorDic) {
            [self toast:errorDic[@"errorMessage"]];
        }];
        
    });
}


- (void)toast:(NSString*)message { // 提示框
    
    UIAlertView *toast = [[UIAlertView alloc] initWithTitle:nil
                                                    message:message
                                                   delegate:nil
                                          cancelButtonTitle:nil
                                          otherButtonTitles:nil, nil];
    [toast show];
    double duration = 2.5;
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(duration * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [toast dismissWithClickedButtonIndex:0 animated:NO];
    });
}


- (CGPoint)convertToPointOfInterestFromViewCoordinates:(CGPoint)viewCoordinates {// 将UI的坐标转换成相机坐标
    
    CGPoint pointOfInterest = CGPointMake(.5f, .5f);
    CGSize frameSize = self.view.frame.size;
    CGSize apertureSize = [_kitCN captureDimension];
    CGPoint point = viewCoordinates;
    CGFloat apertureRatio = apertureSize.height / apertureSize.width;
    CGFloat viewRatio = frameSize.width / frameSize.height;
    CGFloat xc = .5f;
    CGFloat yc = .5f;
    
    if (viewRatio > apertureRatio) {
        CGFloat y2 = frameSize.height;
        CGFloat x2 = frameSize.height * apertureRatio;
        CGFloat x1 = frameSize.width;
        CGFloat blackBar = (x1 - x2) / 2;
        if (point.x >= blackBar && point.x <= blackBar + x2) {
            xc = point.y / y2;
            yc = 1.f - ((point.x - blackBar) / x2);
        }
    }else {
        CGFloat y2 = frameSize.width / apertureRatio;
        CGFloat y1 = frameSize.height;
        CGFloat x2 = frameSize.width;
        CGFloat blackBar = (y1 - y2) / 2;
        if (point.y >= blackBar && point.y <= blackBar + y2) {
            xc = ((point.y - blackBar) / y2);
            yc = 1.f - (point.x / x2);
        }
    }
    pointOfInterest = CGPointMake(xc, yc);
    return pointOfInterest;
}

#pragma mark - GetMethod   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

- (LVCUGCLivePrepareView *)prepareView {
    
    if (!_prepareView) {
        _prepareView = [[LVCUGCLivePrepareView alloc] initWithFrame:self.view.bounds];
        [_prepareView.startButton addTarget:self action:@selector(startCapture:) forControlEvents:UIControlEventTouchUpInside];
        UITapGestureRecognizer * tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onTap:)];
        tapRecognizer.delegate = self;
        [_prepareView addGestureRecognizer:tapRecognizer];
    }
    return _prepareView;
}

- (FilterFunctionView *)filterView
{
    if (!_filterView) {
        _filterView = [[FilterFunctionView alloc] initWithFrame:CGRectMake(0, 75, SCREEN_WIDTH, 200)];
        _filterView.hidden = YES;
    }
    return _filterView;
}

- (UIView *)captureView {  // 拍摄视图
    
    if (!_captureView) {
        _captureView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
        _captureView.backgroundColor = [UIColor blackColor];
    }
    return _captureView;
}

- (UIButton *)quitButton {
    
    if (!_quitButton) {
        _quitButton = [self createButtonWithFrame:CGRectMake(SCREEN_WIDTH - 50, 30, 35, 35) image:@"LiveCloseNormal" selected:@"LiveCloseTouch"];
        [_quitButton addTarget:self action:@selector(quitBtnClick) forControlEvents:UIControlEventTouchUpInside];
    }
    return _quitButton;
}

- (UIButton *)changeCameraButton {
    
    if (!_changeCameraButton) {
        _changeCameraButton = [self createButtonWithFrame:CGRectMake(SCREEN_WIDTH - 100, 30, 35, 35) image:@"camera" selected:@"Select the camera"];
        [_changeCameraButton addTarget:self action:@selector(changeCamera:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _changeCameraButton;
}

- (UIButton *)openFlashButton {
    
    if (!_openFlashButton) {
        _openFlashButton = [self createButtonWithFrame:CGRectMake(SCREEN_WIDTH - 100, 75, 35, 35) image:@"open flash" selected:@"Flash off"];
        _openFlashButton.hidden = YES;
        [_openFlashButton addTarget:self action:@selector(openFlash:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _openFlashButton;
}

- (UIButton *)openFilterButton {
    
    if (!_openFilterButton) {
        _openFilterButton = [self createButtonWithFrame:CGRectMake(SCREEN_WIDTH - 150, 30, 35, 35) image:@"Is closed" selected:@"Is open"];
        [_openFilterButton addTarget:self action:@selector(openFilter:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _openFilterButton;
}

- (LVCUGCLiveEndView *)endView {
    
    if (!_endView) {
        _endView = [[LVCUGCLiveEndView alloc] initWithFrame:CGRectMake(20, SCREEN_HEIGHT * 0.3, SCREEN_WIDTH - 40, SCREEN_WIDTH - 40)];
        _endView.layer.cornerRadius = 20;
        _endView.layer.masksToBounds = YES;
        [_endView.continueButton addTarget:self action:@selector(continueButtonClick) forControlEvents:UIControlEventTouchUpInside];
        [_endView.endButton addTarget:self action:@selector(endButtonClick) forControlEvents:UIControlEventTouchUpInside];
    }
    return _endView;
}

#pragma mark - Action !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

- (void)addObservers {
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(captureStateChange) name:CNLiveCaptureStateDidChangeNotification object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(streamStateChange)
                                                 name:CNLiveStreamStateDidChangeNotification
                                               object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(enterBg)
                                                 name:UIApplicationDidEnterBackgroundNotification
                                               object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(becameActive)
                                                 name:UIApplicationDidBecomeActiveNotification
                                               object:nil];
}

- (UIButton *)createButtonWithFrame:(CGRect)frame image:(NSString *)image selected:(NSString *)selected {
    
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn setFrame:frame];
    [btn setImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
    [btn setImage:[UIImage imageNamed:selected] forState:UIControlStateSelected];
    return btn;
}

- (NSString *)dictionaryToJson:(NSDictionary *)dic
{
    NSError *parseError = nil;
    // 序列化
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];
    
    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end