UI常用控件总结(三)

音频

 　　//1.设置背景音乐
    //初始化音乐链接
    NSURL *avUrl = [[NSBundle mainBundle] URLForResource:@"背景音乐" withExtension:@"caf"];
    //初始化音乐播放器类
    AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:avUrl error:nil];
    _player = player;
    //循环次数
    _player.numberOfLoops = 10;
    //音量(0~1)
    _player.volume = 0.3;
    //播放
    [_player play];

    //2.设置音效
    //设置系统音效ID
    SystemSoundID ID;
    //根据音效名称,获取音效所在地址
    NSString *audioPath = [[NSBundle mainBundle] pathForResource:@"胜利" ofType:@"aiff"];
    //根据地址把音效文件取出
    NSURL *audioUrl = [NSURL fileURLWithPath:audioPath];
    //将url转换为sound ID
    AudioServicesCreateSystemSoundID((__bridge CFURLRef _Nonnull)(audioUrl), &ID);
    //播放(带振动)
    AudioServicesPlayAlertSound(ID);
    //播放(不振动)
    AudioServicesPlaySystemSound(ID);

动画

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

 //动画方法一(复杂)
 //开始动画
 [UIView beginAnimations:nil context:nil];
 //设置动画时长
 [UIView setAnimationDuration:5];
 //设置动画延迟时间
 [UIView setAnimationDelay:1];
 //设置动画重复次数
 [UIView setAnimationRepeatCount:5];
 //设置自动返回动画
 [UIView setAnimationRepeatAutoreverses:YES];
 //设置动画状态
 [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
 //必须要设置代理才能调用其结束方法
 [UIView setAnimationDelegate:self];
 [UIView setAnimationDidStopSelector:@selector(stop)];
 //提交动画(不能缺少这一步)
 [UIView commitAnimations];

 //动画方法二(简单)
 [UIView animateWithDuration:5 animations:^{
 //动画代码

 }];

 [UIView animateWithDuration:5 animations:^{
 //动画代码

 } completion:^(BOOL finished) {
 //动画完成后执行的代码
 }];
 //设置动态缓冲效果
 [UIView animateWithDuration:5 delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:5 options:UIViewAnimationOptionLayoutSubviews animations:^{

 } completion:^(BOOL finished) {

 }];
 }

UITabBarController

　　 //初始化各个控制器
     MyFirstViewController *mFVC = [MyFirstViewController new];
     MySecondViewController *mSVC = [MySecondViewController new];
     MyThirdViewController *mTVC = [MyThirdViewController new];
     //添加到根控制器上
     self.viewControllers = @[mFVC,mSVC,mTVC];
     //给每个视图控制器添加 tab 选项 tabBarItem  ——系统自带的样式
     UITabBarItem *firstItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:101];
     UITabBarItem *secondItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemRecents tag:102];
     UITabBarItem *thirdItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemContacts tag:103];
     //给每个视图控制器添加 tab 选项 tabBarItem  ——自定义的样式（图片加文字描述）
     //取消系统渲染,始终显示用户所用图片
     UIImage *image = [UIImage imageNamed:@"1"];
     image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     UITabBarItem *firstItem1 = [[UITabBarItem alloc] initWithTitle:@"" image:image selectedImage:image];
     UITabBarItem *secondItem2 = [[UITabBarItem alloc] initWithTitle:@"" image:[UIImage imageNamed:@""] tag:104];
     //设置按钮上面的数字小气泡
     firstItem.badgeValue = @"99+";
     //给最下面的条形框加背景
     self.tabBar.backgroundImage = [UIImage imageNamed:@""];
     //设置item
     mFVC.tabBarItem = firstItem;
     mSVC.tabBarItem = secondItem;
     mTVC.tabBarItem = thirdItem;
     //利用数组设置item字体颜色
     NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize:12],NSForegroundColorAttributeName:[UIColor purpleColor]};
     [firstItem setTitleTextAttributes:dic forState:UIControlStateNormal];
     //隐藏tabBar
     self.tabBar.hidden = YES;