Objective C 语言怎样实现自定义拖放效果

Objective-C 阿木发布于 15 天前 3 次阅读

摘要：在iOS开发中，拖放（Drag and Drop）是一种常见的用户交互方式。本文将围绕Objective-C语言，详细介绍如何在iOS应用中实现自定义拖放效果，包括拖放视图的创建、拖放代理的设置、拖放动画的处理以及拖放数据的传递等。

一、

拖放效果在iOS应用中广泛应用于游戏、编辑器、文件管理器等场景。通过自定义拖放效果，可以提升应用的交互体验和用户体验。本文将详细介绍如何在Objective-C中实现自定义拖放效果。

二、拖放视图的创建

1. 创建拖放视图

我们需要创建一个拖放视图，通常是一个UIView的子类。以下是一个简单的拖放视图的创建示例：

objective-c
@interface DragDropView : UIView

@property (nonatomic, strong) UIView draggingView;

@end

@implementation DragDropView

- (instancetype)initWithFrame:(CGRect)frame {

    self = [super initWithFrame:frame];

    if (self) {

        // 初始化拖放视图

        self.draggingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];

        self.draggingView.backgroundColor = [UIColor blueColor];

        [self addSubview:self.draggingView];

    }

    return self;

}

@end

2. 设置拖放视图的边界

为了限制拖放视图的移动范围，我们需要设置拖放视图的边界。以下是一个设置拖放视图边界的示例：

```objective-c

- (void)setupDragDropView {

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

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self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled = NO;

self.draggingView.userInteractionEnabled = YES;

self.draggingView.userInteractionEnabled =

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