接口

可以通过以下属性启用或禁用阻力

/**
 *  This flag defines whether or not resistance is enabled on the scroll view.
 *  If this is set to NO, both @c resistanceFactor and @c resistanceProgressionRatio
 *  remain unused. Otherwise, if set to YES, resistance is applied based on those two values.
 */
@property (nonatomic, assign) IBInspectable BOOL shouldApplyResistance;

启用时，使用 resistanceFactor 和 resistanceProgressionRatio 应用阻力

/**
 *  This property defines the base value of how resistant the scroll view is when
 *  performing overscroll operations. Please look at @c resistanceProgressionRatio
 *  in order to achieve progressive resistance during an overscroll operation.
 */
@property (nonatomic, assign) IBInspectable CGFloat resistanceFactor;

/**
 *  This property affects how much more resistant the scroll view becomes as the user
 *  continues performing overscroll operations. If this value is 0 the resistance will
 *  be defined solely by @c resistanceFactor and it will remain the same throughout
 *  the overscroll operation; otherwise, it will impact how much resistance is seen
 *  when overscrolling.
 *
 *  Values between 0 and 1 seem to work best with the current implementation.
 */
@property (nonatomic, assign) IBInspectable CGFloat resistanceProgressionRatio;

还可能定义一个执行块，每次调用 UIScrollView 的代理方法 scrollViewDidScroll: 时都会执行此块。该块在应用阻力后执行，以便在运行块时调整 contentOffset 值

/**
 *  If defined, this block is run every time the scroll view's delegate method
 *  @c scrollViewDidScroll: is called. Since this class sets itself as the scroll 
 *  view's delegate, this may be used when external code needs to be executed.
 */
@property (nonatomic, copy) void (^scrollViewDidScrollExecutionBlock)(UIScrollView *);

如果此类使用的需要实现 UIScrollView 的代理方法以执行其他任务，它们可以通过设置代理来执行。 EAResistantScrollView 将负责将任何代理调用重定向到适当的对象。

用法

要运行示例项目，请先克隆仓库，然后从 Example 目录运行 pod install

安装

导入

#import <EAResistantScrollView/EAResistantScrollView.h>

作者

Edgar Antunes

许可协议

EAResistantScrollView 可在 MIT 许可协议下使用。有关更多信息，请参阅 LICENSE 文件。