让图片左右缓慢移动的MoveView
效果:
源码:
MoveView.h 与 MoveView.m
//
// MoveView.h
// AnimationView
//
// Created by XianMingYou on 15/1/28.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
// #import <UIKit/UIKit.h> typedef enum : NSUInteger {
MV_RIGHT = 0x19871220, // 开始时候向右移动
MV_LEFT, // 开始时候向左移动
} EStartMoveDirection; @interface MoveView : UIView @property (nonatomic) CGFloat animationDuration; // 移动动画持续的时间
@property (nonatomic) EStartMoveDirection direction; // 起始移动的方向(默认值向右)
@property (nonatomic, strong) UIImage *image; // 输入的图片 /**
* 创建出view
*/
- (void)buildView; /**
* 开始动画
*/
- (void)doAnimation; /**
* 透明百分比
*
* @param percent 百分比(0 ~ 1)
*/
- (void)alphaPercent:(CGFloat)percent; @end
//
// MoveView.m
// AnimationView
//
// Created by XianMingYou on 15/1/28.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
// #import "MoveView.h" @interface MoveView () @property (nonatomic, strong) UIImageView *imageView; @property (nonatomic) CGRect startFrame; // 起始frame值
@property (nonatomic) CGRect endFrame; // 结束frame值 @end @implementation MoveView - (void)buildView {
// 添加遮罩
self.layer.masksToBounds = YES; // 如果没有图片,则直接退出
if (self.image == nil) {
return;
} // 获取图片高度
CGFloat height = self.frame.size.height;
CGSize imageSize = self.image.size;
CGFloat imageViewWidth = height / imageSize.height * imageSize.width; // 获取到了尺寸
self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(, , imageViewWidth, height)];
self.imageView.image = self.image; // 获取初始尺寸
self.startFrame = self.imageView.frame;
self.endFrame = CGRectMake(self.frame.size.width - self.imageView.frame.size.width, , imageViewWidth, height); [self addSubview:self.imageView];
} - (void)doAnimation {
// 获取默认值
if (self.direction != MV_RIGHT && self.direction != MV_LEFT) {
self.direction = MV_RIGHT;
} if (self.direction == MV_RIGHT) {
self.imageView.frame = self.startFrame;
} else {
self.imageView.frame = self.endFrame;
} // 获取动画时间
self.animationDuration = (self.animationDuration <= ? .f : self.animationDuration); // 开始动画
[self startAnimation];
} - (void)alphaPercent:(CGFloat)percent {
self.alpha = percent;
} - (void)startAnimation { if (self.direction == MV_RIGHT) {
[UIView animateWithDuration:self.animationDuration
animations:^{
self.imageView.frame = self.endFrame;
} completion:^(BOOL finished) {
[UIView animateWithDuration:self.animationDuration
animations:^{
self.imageView.frame = self.startFrame;
} completion:^(BOOL finished) {
[self startAnimation];
}];
}];
} else {
[UIView animateWithDuration:self.animationDuration
animations:^{
self.imageView.frame = self.startFrame;
} completion:^(BOOL finished) {
[UIView animateWithDuration:self.animationDuration
animations:^{
self.imageView.frame = self.endFrame;
} completion:^(BOOL finished) {
[self startAnimation];
}];
}];
}
} @end
控制器源码:
//
// ViewController.m
// MoveView
//
// Created by YouXianMing on 15/1/28.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
// #import "ViewController.h"
#import "MoveView.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad {
[super viewDidLoad]; // 背景移动的图
MoveView *moveView = [[MoveView alloc] initWithFrame:self.view.bounds];
moveView.image = [UIImage imageNamed:@"1.jpg"];
moveView.animationDuration = ;
moveView.direction = MV_RIGHT;
[moveView buildView];
[moveView doAnimation]; [self.view addSubview:moveView];
} @end
核心要点: