iOS中宏定义太长的话用反斜杠( \ )转义，则可写成多行；
<pre>
define Animation1Arr(arr) {NSBundle *bundle1 = [NSBundle bundleForClass:[SVProgressHUD class]];\
NSURL *url = [bundle1 URLForResource:@"SVProgressHUD" withExtension:@"bundle"];
NSBundle *bundle = [NSBundle bundleWithURL:url];
for (int i=0 ;i<8;i++) {
UIImage *img=[UIImage imageNamed:[NSString stringWithFormat:@"pull_end_image_frame_%02d",i] inBundle:bundle compatibleWithTraitCollection:nil];
[arr addObject:img];
}
}
</pre>
- 注意：写成多行时反斜杠( \ )后面不能有空格，否则编译器会报错！
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