ios - 可以单独给UITextField中的placeholder设置字体大小吗？

Question

如题，应用中，有一处 TextField 需要填写数字，所以宽度比较窄，但是 placeholder 的提示语想使用中文：“请填写数字：”，导致比较宽，显示不全。不改变所输入文字的字体大小的前提下，是否可以单独设置 placeholder 的字体大小？

网上能查到的解决方案:

textField.placeholder = @"username is in here!";  
[textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"];  
[textField setValue:[UIFont boldSystemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"]; 

经过试验，好像已经失效了……

Answer 1

The failure is because the .textcolor .font attribute of this attribute cannot be found. You can print it to see if there is anything.

Answer 2

I set it in the category:

[self setValue:[UIColor lightGrayColor] forKeyPath:@"_placeholderLabel.textColor"];
[self setValue:[UIFont systemFontOfSize:15.f weight:UIFontWeightThin] forKeyPath:@"_placeholderLabel.font"];

It’s ok

Answer 3

attributedPlaceholder attribute?

Answer 4

Well, attributedPlaceholder attribute