# HWPanModal 👍
HWPanModal 用于从底部弹出控制器(UIViewController),并用拖拽手势来关闭控制器。提供了自定义视图大小和位置,高度自定义弹出视图的各个属性。
APP中常见的从底部弹出视图,可以通过该框架快速实现,只需专注于相应的视图编写。常规热门app的UI示例:
1. 知乎APP的查看评论
2. 抖音的评论查看
3. 微信,网易音乐等app弹出分享
4. 嘀嗒出行行程进行页(地图上的浮层view效果)
5. iOS13 默认模态(present)效果
6. And more...
## 特别感谢
Special Thanks to JetBrains! I use AppCode IDE to develop my open source project.
## 截图
Basic |
Blur background |
Keyboard handle |
App demo |
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## 功能
1. 支持任意类型的 `UIViewController`
2. 支持继承自 `HWPanModalContentView` 的view
3. 平滑的转场动画
4. 支持2种类型的手势dismiss视图
1. 上下方向拖动关闭视图。
2. 侧滑关闭视图,支持全屏侧滑。
5. 支持为presenting VC编写自定义动画。
6. 支持配置动画时间,动画options,弹性spring值
7. 支持配置背景alpha,或者高斯模糊背景。注意:动态调整模糊效果仅工作于iOS9.0+。
8. 支持显示隐藏指示器,修改圆角
9. 自动处理键盘弹出消失事件。
10. 自定义指示器indicator view。
11. 事件可以穿透到下层presenting VC。
12. 可配置presented content 阴影。
更多配置信息请参阅 [_HWPanModalPresentable.h_](https://github.com/HeathWang/HWPanModal/blob/master/Sources/Presentable/HWPanModalPresentable.h) 声明。
## 特别注意
1. 任何情况下,内部嵌套scrollable(UIScrollView,UITableView,UIWebView,UICollectionView),如果scrollable的contentSize变化了,务必调用`- (void)hw_panModalSetNeedsLayoutUpdate`刷新UI!!!
2. 如果需要弹出浮层后push到下一层,使用`HWPanModalContentView`或者present vc用navigation 包一层。
3. 请仔细阅读md,编译run示例代码,95%的功能在示例中都有展示,不要什么都不看就来问问题!!!
### 支持UIViewController和继承自HWPanModalContentView弹出视图
从0.6.0版本后, 该框架支持使用 `HWPanModalContentView` 从底部弹出视图, 即实现了present ViewController同样的交互和动画。
不同点是 `HWPanModalContentView` 只是一个view视图, 通过添加一些动画实现了原本的功能。不像present ViewController的模式,你可以获得controller的整个生命周期,并且可以使用navigation栈来push VC。
`HWPanModalContentView` 目前的限制:
* 不支持转屏。
* 不支持屏幕边缘横向拖拽来dismiss。
* 不支持自定义presenting VC动画。(因为是view,没有presenting VC)
## 适配
**iOS 8.0+**, support Objective-C & Swift.
## 安装
### [CocoaPods](https://guides.cocoapods.org/using/using-cocoapods.html)
```ruby
pod 'HWPanModal', '~> 0.9.4'
```
## 如何使用
### 如何从底部弹出控制器
只需要视图控制器适配 `HWPanModalPresentable` 协议即可. 默认情况下,不用重写适配的各个方法,如果需要自定义,请实现协议方法。
更多的自定义UI配置,请参见`HWPanModalPresentable`协议中每个方法的说明。
```Objective-C
#import
@interface HWBaseViewController ()
@end
@implementation HWBaseViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
#pragma mark - HWPanModalPresentable
- (PanModalHeight)longFormHeight {
return PanModalHeightMake(PanModalHeightTypeMaxTopInset, 44);
}
@end
```
弹出控制器:
```Objective-C
#import
[self presentPanModal:[HWBaseViewController new]];
```
就是这么简单。
### 如何主动更新控制器UI
请查阅 `UIViewController+Presentation.h`,里面有详细说明。
* Change the state between short and long form. call `- (void)hw_panModalTransitionTo:(PresentationState)state;`
* Change ScrollView ContentOffset. call `- (void)hw_panModalSetContentOffset:(CGPoint)offset;`
* Reload layout. call `- (void)hw_panModalSetNeedsLayoutUpdate;`
* 注意:如果scrollable view的contentSize改变了,你必须调用改reload方法来更新UI。
### 自定义presenting VC动画编写
1. Create object conforms `HWPresentingViewControllerAnimatedTransitioning` .
```Objective-C
@interface HWMyCustomAnimation : NSObject
@end
@implementation HWMyCustomAnimation
- (void)presentAnimateTransition:(id)transitionContext {
NSTimeInterval duration = [transitionContext transitionDuration];
UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
// replace it.
[UIView animateWithDuration:duration delay:0 usingSpringWithDamping:0.8 initialSpringVelocity:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
fromVC.view.transform = CGAffineTransformMakeScale(0.95, 0.95);
} completion:^(BOOL finished) {
}];
}
- (void)dismissAnimateTransition:(id)transitionContext {
NSTimeInterval duration = [transitionContext transitionDuration];
UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
// replace it.
[UIView animateWithDuration:duration animations:^{
toVC.view.transform = CGAffineTransformIdentity;
}];
}
@end
```
1. Overwrite below two method.
```Objective-C
- (PresentingViewControllerAnimationStyle)presentingVCAnimationStyle {
return PresentingViewControllerAnimationStyleCustom;
}
- (id)customPresentingVCAnimation {
return self.customAnimation;
}
- (HWMyCustomAnimation *)customAnimation {
if (!_customAnimation) {
_customAnimation = [HWMyCustomAnimation new];
}
return _customAnimation;
}
```
### 自定义指示器indicator view
You just need to create your own UIView, then adopt `HWPanModalIndicatorProtocol`.
In your presented controller, return it:
```Objective-C
- (nullable UIView *)customIndicatorView {
HWTextIndicatorView *textIndicatorView = [HWTextIndicatorView new];
return textIndicatorView;
}
```
Here is `HWTextIndicatorView` code:
```Objective-C
@interface HWTextIndicatorView : UIView
@end
@interface HWTextIndicatorView ()
@property (nonatomic, strong) UILabel *stateLabel;
@end
@implementation HWTextIndicatorView
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
// init the _stateLabel
[self addSubview:_stateLabel];
}
return self;
}
- (void)didChangeToState:(HWIndicatorState)state {
switch (state) {
case HWIndicatorStateNormal: {
self.stateLabel.text = @"Please pull down to dismiss";
self.stateLabel.textColor = [UIColor whiteColor];
}
break;
case HWIndicatorStatePullDown: {
self.stateLabel.text = @"Keep pull down to dismiss";
self.stateLabel.textColor = [UIColor colorWithRed:1.000 green:0.200 blue:0.000 alpha:1.00];
}
break;
}
}
- (CGSize)indicatorSize {
return CGSizeMake(200, 18);
}
- (void)setupSubviews {
self.stateLabel.frame = self.bounds;
}
@end
```
### 如何使用HWPanModalContentView
你必须继承自 `HWPanModalContentView`. `HWPanModalContentView` 适配 `HWPanModalPresentable` 协议,就像你可用该协议来present一样。
```Objective-C
@interface HWSimplePanModalView : HWPanModalContentView
@end
@implementation HWSimplePanModalView
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
// add view and layout.
}
return self;
}
// present it.
HWSimplePanModalView *simplePanModalView = [HWSimplePanModalView new];
[simplePanModalView presentInView:nil];
```
## 例子
1. 克隆项目
2. 然后执行 `pod install`
3. 打开 HWPanModal.xcworkspace, 选择OC或者Swift项目运行
###### 我分别编写了纯`Objective-C` & `Swift`例子,基本涵盖了该framework的所有API使用。
## 联系我
Heath Wang
yishu.jay@gmail.com
## WX
## License
HWPanModal is released under a MIT License. See LICENSE file for details.