IOS 自定义从底部弹上来的View

来源：互联网发布：网络运营提成方案编辑：程序博客网时间：2024/05/16 10:51

效果图：

／／从底部向上弹起的UIView类源码

#import "TFSheetView.h"@interface TFSheetView(){    UIView *_contentView;}@end@implementation TFSheetView- (id)initWithFrame:(CGRect)frame{    if (self == [super initWithFrame:frame])    {        [self initContent];    }    return self;}- (void)initContent{    self.frame = CGRectMake(0, 0, kDEVICEWIDTH, kDEVICEHEIGHT);        //alpha 0.0  白色   alpha 1 ：黑色   alpha 0～1 ：遮罩颜色，逐渐    self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.4];    self.userInteractionEnabled = YES;    [self addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(disMissView)]];    if (_contentView == nil)    {        _contentView = [[UIView alloc]initWithFrame:CGRectMake(0, kDEVICEHEIGHT - 216, kDEVICEWIDTH, 216)];        _contentView.backgroundColor = [UIColor redColor];        [self addSubview:_contentView];    }}- (void)loadMaskView{}//展示从底部向上弹出的UIView（包含遮罩）- (void)showInView:(UIView *)view{    if (!view)    {        return;    }        [view addSubview:self];    [view addSubview:_contentView];        [_contentView setFrame:CGRectMake(0, kDEVICEHEIGHT, kDEVICEWIDTH, 216)];     [UIView animateWithDuration:0.3 animations:^{             self.alpha = 1.0;         [_contentView setFrame:CGRectMake(0, kDEVICEHEIGHT - 216, kDEVICEWIDTH, 216)];            } completion:nil];}//移除从上向底部弹下去的UIView（包含遮罩）- (void)disMissView{    [_contentView setFrame:CGRectMake(0, kDEVICEHEIGHT - 216, kDEVICEWIDTH, 216)];    [UIView animateWithDuration:0.3f                     animations:^{                                                  self.alpha = 0.0;                                                  [_contentView setFrame:CGRectMake(0, kDEVICEHEIGHT, kDEVICEWIDTH, 216)];                     }                     completion:^(BOOL finished){                                                   [self removeFromSuperview];                          [_contentView removeFromSuperview];                                              }];}@end

使用方法：

1.在一个ViewController中，初始化一个button，添加点击事件

- (void)loadBtnView{    UIButton *_loginButton = [[UIButton alloc]initWithFrame:CGRectMake(40, 220, kDEVICEWIDTH - 40*2, 40)];    [_loginButton setTitle:@"加载" forState:UIControlStateNormal];    _loginButton.backgroundColor = [UIColor grayColor];    [_loginButton addTarget:self action:@selector(loadClicked) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:_loginButton];}

2. 加载从底部向上弹起的UIView（如效果图所示）

- (void)loadClicked{    //[_sheetView showInView:self.view];    _tfSheetView = [[TFSheetView alloc]init];    [_tfSheetView showInView:self.view];}

3. 点击一下遮罩，页面会自动下去（从上向下）

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