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我正在使用子类UITextField来使用自定义字体。当我为此设置一个占位符时，textfield它会向上移动一点，但是当我开始输入文本时，frame文本没有问题。有没有办法解决占位符转移问题​​。

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2 回答 2

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self.txtFirstName.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
self.txtFirstName.autocapitalizationType = UITextAutocapitalizationTypeSentences;
self.txtFirstName.placeholder = @"Enter First Name here";
self.txtFirstName.textAlignment = UITextAlignmentLeft;
于 2013-02-26T04:42:40.473 回答
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我有同样的问题，我尝试setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter了解决我的问题。

            UITextField *txtPassword = [[UITextField alloc] initWithFrame:CGRectMake(15,55, 255, 25)];
            [txtPassword setPlaceholder:@"Password..."];
            [txtPassword setBackgroundColor:[UIColor whiteColor]];
            [txtPassword setFont:[UIFont fontWithName:@"Helvetica" size:15]];
            [txtPassword setSecureTextEntry:YES];
            [txtPassword setTextAlignment:NSTextAlignmentCenter];
            [txtPassword setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter];
            [txtPassword becomeFirstResponder];

希望这可以帮助。

于 2013-02-26T04:48:14.547 回答