UITextField set placeholderColor and UITextField set clearButton Image
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self.usernameTextField.tintColor = [UIColor whiteColor]; [self.usernameTextField setValue:UIColorFromRGBA(0xffffff, .6f) forKeyPath:@"_placeholderLabel.textColor"];
self.passwordTextField.tintColor = [UIColor whiteColor]; [self.passwordTextField setValue:UIColorFromRGBA(0xffffff, .6f) forKeyPath:@"_placeholderLabel.textColor"];
UIButton *pwdClearButton = [self.passwordTextField valueForKey:@"_clearButton"]; [pwdClearButton setImage:[UIImage imageNamed:@"login_icon_clear"] forState:UIControlStateNormal];
UIButton *userNameClearButton = [self.usernameTextField valueForKey:@"_clearButton"]; [userNameClearButton setImage:[UIImage imageNamed:@"login_icon_clear"] forState:UIControlStateNormal];
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