本文实例为大家分享了iOS实现背景滑动效果的具体代码,供大家参考,具体内容如下
1、在很多APP中,我们都可以看见那些特效绚丽的滑动选项条,那么如何才能够简单,快速的实现那样的效果呢
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController{
NSMutableArray *btnArray;
NSMutableArray *titleArray;
}
@property (nonatomic,strong) UIView *customView;
@property (nonatomic,strong) UIView *backView;
@property (nonatomic,strong) UIButton *myButton;
-(void)myButtonClcik:(id)sender;
@end
第二步:在我们的额viewdidload方法中,或者自定义一个方法中创建我么的界面元素。《这里我引日了QuartzCore框架,是为了使用其layer属性》
#import "ViewController.h"
#import <QuartzCore/QuartzCore.h>
@interface ViewController ()
@end
@implementation ViewController
@synthesize customView;
@synthesize backView;
@synthesize myButton;
//每行显示的button个数
#define kSelectNum 6
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//创建背景视图,并设置背景颜色或者图片
customView = [[UIView alloc]initWithFrame:CGRectMake(20, 100, 900, 60)];
customView.backgroundColor = [UIColor blackColor];
//设置customView的样式,变为圆角
customView.layer.cornerRadius = 15.0f;
customView.layer.masksToBounds = YES;
//将customView add 到当前主View中
[self.view addSubview:customView];
//创建button的背景视图
backView = [[UIView alloc] initWithFrame:CGRectMake(5, 5, 95, 50)];
backView.backgroundColor = [UIColor blueColor];
//设置为圆角。以免造成重叠显示
backView.layer.cornerRadius = 15.0f;
backView.layer.masksToBounds = YES;
//将backView视图add到customView中
[customView addSubview:backView];
//创建button,首先button的个数是不固定的,因此我们需要动态的生成button
//创建数组,保存button的title
btnArray = [[NSMutableArray alloc]init];
titleArray = [[NSMutableArray alloc]initWithObjects:@"热播大片",@"最新更新",@"最热观看",@"美剧大片",@"韩剧频道",@"综艺娱乐", nil];
//动态生成button
for (int i = 0; i < kSelectNum; i ++){
myButton = [UIButton buttonWithType:UIButtonTypeCustom];
myButton.titleLabel.font = [UIFont boldSystemFontOfSize:20.0f];
[myButton setTitle:[titleArray objectAtIndex:i] forState:UIControlStateNormal];
[myButton setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
[myButton setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected];
[myButton setFrame:CGRectMake(i%(kSelectNum + 1)*140+5, 5, 95, 50)];
[myButton addTarget:self action:@selector(myButtonClcik:) forControlEvents:UIControlEventTouchUpInside];
myButton.tag = i;
[btnArray addObject:myButton];
[customView addSubview:myButton];
//设置默认选择的button.title的颜色
if(i == 0){
myButton.selected = YES;
}
}
}
第三步:我们为button添加按钮点击事件,同时设置背景色滑动特效。
- (void)myButtonClcik:(id)sender{
// NSString *selectedBtn = [NSString stringWithFormat:@"%@",[titleArray objectAtIndex:button.tag]];
// UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil message:selectedBtn delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
// [alert show];
//添加动画过度效果
[UIView beginAnimations:@"slowGlide" context:nil];
[UIView setAnimationDuration:0.3f];
//设置每次只能选择一个button
UIButton *button = (UIButton *)sender;
if(!button.selected){
for (UIButton *eachBtn in btnArray) {
if(eachBtn.isSelected){
[eachBtn setSelected:NO];
}
}
[button setSelected:YES];
//设置点击那个按钮,那个按钮的背景改变为backView的颜色
[backView setFrame:button.frame];
}
[UIView commitAnimations];
}
最后成型,我们就可以根据我们的样式需要进行调整了。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程网。