Question

我在单页应用程序上有一个图像视图，我点击它时它将其设置为全屏大小并且它可以正常工作。但我还希望它在全屏尺寸时点按它时缩小到原来的大小。怎么做？现在，点击它会使它全屏，然后我只能停止运行。这是我的代码：

- (void)Enlarge:(id)sender{
    [ImageView setFrame:CGRectMake(0, 20, (460/1.5), 480-20)]; //enlarge to fullscreen but exclude the status bar.
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(Enlarge:)];
    tapGesture.numberOfTapsRequired = 1;
    tapGesture.cancelsTouchesInView = YES;
    [ImageView setUserInteractionEnabled:YES];
    [ImageView addGestureRecognizer:tapGesture];
    [tapGesture release];
}

我的第二个问题是我有两个由这个视图控制器控制的故事板，一个用于3.5英寸，另一个用于4英寸屏幕。我希望我的放大适合两种屏幕尺寸，可以跟随改变吗？因为我此时没有iPhone5进行测试。

- (void)Enlarge:(id)sender{
    CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size;

    if (iOSDeviceScreenSize.height == 480){
        [ImageView setFrame:CGRectMake(0, 20, (460/1.5), 480-20)];
    }
    if (iOSDeviceScreenSize.height == 568){
        [ImageView setFrame:CGRectMake(0, 20, (548/1.775), 568-20)];
    }

}

非常感谢！

Answer 1

添加BOOL变量以跟踪它是否为fullScreen。

在.h添加属性

@property (nonatomic, assign) BOOL isFullScreen;

@property (nonatomic, assign) CGRect originalRect;

在viewDidLoad中，添加以下行

self.isFullScreen = NO;
self.originalRect = CGRectMake(0,0,153,230);//replace this by the zoomed out rect size that you want

并在你的放大中：

- (void)Enlarge:(id)sender{

if(!self.isFullScreen){
[ImageView setFrame:CGRectMake(0, 20, (460/1.5), 480-20)]; //enlarge to fullscreen but exclude the status bar.
}else {
[ImageView setFrame:originalFrame];//
}
self.isFullScreen = !self.isFullScreen;
}

关于第二个问题，是的，这应该有用。

如何再次点击ImageView在全屏时缩小？

1 个答案: