iOS开发悬浮按钮

释放双眼,带上耳机,听听看~!

 

 

 

#import "ViewController.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UITableView *tableView;

@property(strong,nonatomic)UIWindow *window;

@property(strong,nonatomic)UIButton *button;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self performSelector:@selector(createButton) withObject:nil afterDelay:0];

}

#pragma mark - 创建悬浮的按钮

- (void)createButton{

_window = [UIApplication sharedApplication].windows[0];

_button = [UIButton buttonWithType:UIButtonTypeCustom];

[_button setTitle:@"按钮" forState:UIControlStateNormal];

_button.frame = CGRectMake(kSize_width - 70, kSize_height - 150, 60, 60);

_button.titleLabel.font = [UIFont systemFontOfSize:13.0f];

[_button setBackgroundColor:[UIColor orangeColor]];

_button.layer.cornerRadius = 30;

_button.layer.masksToBounds = YES;

[_button addTarget:self action:@selector(resignButton) forControlEvents:UIControlEventTouchUpInside];

//    _window = [[UIWindow alloc]initWithFrame:CGRectMake(kSize_width - 70, kSize_height - 150, 50, 50)];

//    _window.windowLevel = UIWindowLevelAlert+1;

//    _window.backgroundColor = [UIColor greenColor];

//    _window.layer.cornerRadius = 25;

//    _window.layer.masksToBounds = YES;

[_window addSubview:_button];

//    [_window makeKeyAndVisible];//显示window

//放一个拖动手势,用来改变控件的位置

UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(changePostion:)];

[_button addGestureRecognizer:pan];

}

- (void)resignButton{

}

//手势事件 -- 改变位置

-(void)changePostion:(UIPanGestureRecognizer *)pan{

CGPoint point = [pan translationInView:_button];

CGFloat width = [UIScreen mainScreen].bounds.size.width;

CGFloat height = [UIScreen mainScreen].bounds.size.height;

CGRect originalFrame = _button.frame;

if (originalFrame.origin.x >= 0 && originalFrame.origin.x+originalFrame.size.width <= width) {

originalFrame.origin.x += point.x;

}if (originalFrame.origin.y >= 0 && originalFrame.origin.y+originalFrame.size.height <= height) {

originalFrame.origin.y += point.y;

}

_button.frame = originalFrame;

[pan setTranslation:CGPointZero inView:_button];

if (pan.state == UIGestureRecognizerStateBegan) {

_button.enabled = NO;

}else if (pan.state == UIGestureRecognizerStateChanged){

} else {

CGRect frame = _button.frame;

//是否越界

BOOL isOver = NO;

if (frame.origin.x < 0) {

frame.origin.x = 0;

isOver = YES;

} else if (frame.origin.x+frame.size.width > width) {

frame.origin.x = width - frame.size.width;

isOver = YES;

}if (frame.origin.y < 0) {

frame.origin.y = 0;

isOver = YES;

} else if (frame.origin.y+frame.size.height > height) {

frame.origin.y = height - frame.size.height;

isOver = YES;

}if (isOver) {

[UIView animateWithDuration:0.3 animations:^{

_button.frame = frame;

}];

}

_button.enabled = YES;

}

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

return 100;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

return [[UITableViewCell alloc] init];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

 

 

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