iOS - UIButton大小随文本自适应及换行（笨鸟先飞中）

NSArray *Arr = @[@"123456",@"123456789",@"qwertyuiop",@"asdfghjkl",@"zxcvbnm",@"abcdefg",@"aaaa",@"bbbb",@"cccc",@"f",@"fretretq",@"fewrtewt",@"a beautiful day",@"够了没有呢",@"哎 还是多写几个吧",@"丰富特权",@"123456"

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