如何为一组图像设置动画? [英] how to animate a set of images?

问题描述

如何为一组图像制作动画，但是我有大量的图像，准确地说是300张，

how to animate a set of images, but I have a large set of images, 300 to be exact,

 Background.animationImages = [NSArray arrayWithObjects:    
                                  [UIImage imageNamed:@"001.jpg"],
                                  [UIImage imageNamed:@"002.jpg"],
                                  [UIImage imageNamed:@"003.jpg"],
                                  [UIImage imageNamed:@"004.jpg"],
                                  [UIImage imageNamed:@"005.jpg"],
                                  [UIImage imageNamed:@"006.jpg"],
                                  [UIImage imageNamed:@"007.jpg"],
                                  [UIImage imageNamed:@"008.jpg"],
                                  [UIImage imageNamed:@"009.jpg"],
                                  [UIImage imageNamed:@"010.jpg"],
                                  nil];

而且我不想一路输入到300，这是否有解决方案? 我可以为此使用循环吗?

and I dont wanna go all the way up to 300 by typing, is there a solution for this? Could I use a loop for this?

推荐答案

一个循环可能看起来像这样

A loop might look like this

NSMutableArray *animationImages = [[NSMutableArray alloc] initWithCapacity:300];

for (int i = 1; i <= 300; i++) {
    NSString *imageName = [NSString stringWithFormat:@"%03d.jpg", i];
    [animationImages addObject:[UIImage imageNamed:imageName]];
}

Background.animationImages = animationImages;

格式说明符%03d表示用0填充的整数，以使最小字段宽度为3.

The format specifier %03d means an integer padded with 0's to give a minimum field width of 3.

但

根据图像的大小，您可能会耗尽内存并终止应用程序.

depending on the size of your images you may well run out of memory and have your app terminated.

Background对于Objective-C上的变量不是一个很好的名字.约定是使用小写字母开头的变量名，然后在其后使用驼峰大小写.

Background is not a very good name for a variable on Objective-C. The convention is to start variable names with a lowercase letter and then use camel case after that.

这篇关于如何为一组图像设置动画?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！