iOS开发实现简单抽屉效果

本文实例为大家分享了iOS实现简单抽屉效果的具体代码，供大家参考，具体内容如下抽屉效果的原理：其实就是把两个子控制器添加到一个RootViewController中，将子控制器的view添加到Root...

本文实例为大家分享了IOS实现简单抽屉效果的具体代码，供大家参考，具体内容如下

抽屉效果的原理：其实就是把两个子控制器添加到一个RootViewController中，将子控制器的view添加到RootViewController的view上，然后改变子控制器view的frame实现抽屉的效果。

下面直接看www.cppcns.com看我自己写的一个小demo。

RootViewController.h

//两个子控制器leftView和midView
@property(nonatomic,weak)UIViewController *leftView;
@property(nonatomic,weak)UIViewController *midView;

RootViewController.m

- (void)viewDidLoad {
  [super viewDidLoad];

  //将leftView和midView添加到self中作为子控制器。将他们的view添加到self.view中
  [self addChildViewController:self.leftView];
  [self.view addSubview:self.leftView.view];
  [self addChildViewController:self.midView];
  [self.view addSubview:self.midView.view];

  //设置一个按钮点击实现抽屉效果
  UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  leftButton.frame = CGRectMake(0, 50, 150, 150);
  [leftButton addTarget:self action:@selector(leftButtonPressed) forControlEvents:UIControlEventTouchUpInside];
  [leftButton setTitle:@"left" forState:UIControlStateNormal];
  [self.midView.view addSubview:leftButton];

}

-(void)leftButtonPressed
{
  //判断抽屉是否是展开状态
  if (self.midView.view.frame.origin.x == 0) {

    //通过动画实现view.fram的改变
    [UIView animateWithDuration:0.3 animations:^{
      /* W H 屏幕实际大小宏
      * #define ScreenWidth [UIScreen mainScreen].bounds.size.width
      * #define ScreenHeight [UIScreen mainScreen].bounds.size.height
      */
      self.leftView.view.frame = CGRectMake(0, 0, W, http://www.cppcns.comH);
      self.midView.view.frame = CGRectMake(200, 50, W, H-50*2);

    } completion:^(BOOL finished) {
    }];

  }else{

    [UIView animateWithDuration:0.3 animations:^{

      self.midView.view.frame = CGRectMake(0, 0, W, H);

    } completion:^(BOOL finished) {
    }];
  }
}

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  LeftViewController *leftView = [[LeftViewController alloc] init];
  MidViewController *midView = [[MidViewController alloc]init];
  RootViewController *rootView = [[RootViewController alloc]init];
  rootView.leftView = leftView;
  rootView.midView = midView;
  self.window.rootViewController = rootView;
  [self.window makeKeyAndVisible];
  return YES;
}

运行代码，效果图如下：

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