ios-hover Button

There may be a need in a project where a button is required at the top of an interface, which may be a post-information feature or a return to the top. So that we can use UIWindow this magical control implementation, very simple.

Full project Source:
Https://github.com/qxuewei/XWSuspendBtn

The final results are as follows:

Implementation logic:
1. Declare the button UIButton property and UIWindow property in the class where the hover button is required

/** window */@property (nonatomic, strong) UIWindow *window;/** 悬浮按钮 */@property (nonatomic, strong) UIButton *button;

2. Create UIWindow and hover button methods

-(void) creatsuspendbtn{//hover button_button = [UIButtonButtonwithtype:uibuttontypecustom]; [_button setimage:[UIImageimagenamed:@"Plus"] Forstate:uicontrolstatenormal];CGFloatScreenWidth = [UIScreen mainscreen]. Bounds. Size. Width;CGFloatScreenHeight = [UIScreen mainscreen]. Bounds. Size. Height; _button. Frame= CGRectMake (0,0, -, -); [_button AddTarget: SelfAction@selector(Suspendbtnclick) forcontrolevents:uicontroleventtouchupinside];///hover button at the top UIWindow_window = [[UIWindowAlloc] Initwithframe:cgrectmake (screenwidth*0.5- +, screenheight- -, -, -)];//Make new window on top_window. Windowlevel= Uiwindowlevelalert +1; _window. BackgroundColor= [UicolorClearcolor]; [_window Addsubview:_button];//Display window[_window makekeyandvisible];}

3. Create a hover button when the view is initialized

- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    [self.mainTableView setDelegate:self];    [self.mainTableView setDataSource:self];    //延时加载window,注意我们需要在rootWindow创建完成之后再创建这个悬浮的按钮    [self performSelector:@selector(creatSuspendBtn) withObject:nil afterDelay:0.2];}

Project GitHub Address:
Https://github.com/qxuewei/XWSuspendBtn

ios-hover Button