是可以改变一个UISearchBar占位符的alignment？

由于不同的input语言，我将需要以不同的alignment方式显示UISearchBar。
我看到了这个答案 ，但我无法find你在UISearchBar上实际alignment文本的位置。

有任何想法吗？
谢谢！

Answer 1

这就是我所做的：

 for (UIView *subView in self.subviews){ if ([subView isKindOfClass:[UITextField class]]) { UITextField *text = (UITextField*)subView; text.textAlignment = UITextAlignmentRight; text.rightViewMode = UITextFieldViewModeAlways; } } 

如果您还想移动放大镜图标，可以这样做：

 text.leftView = nil; text.rightView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"search_icon.png"]]; 

但是你将不得不提供search_icon.png图片。

Answer 2

这是解决scheme

 UITextField *searchTextField = [searchBar valueForKey:@"_searchField"]; UILabel *placeholderLabel = [searchTextField valueForKey:@"_placeholderLabel"]; [placeholderLabel setTextAlignment:NSTextAlignmentLeft]; 

Answer 3

设置属性的占位符文本来实现左alignment的占位符，试试这个代码…

  //Step1 : Make blank attributed string NSMutableAttributedString * attributedString = [[NSMutableAttributedString alloc] initWithString:@""]; //Step2 : Append placeholder to blank attributed string NSString *strSearchHere = @"Search here..."; NSDictionary * attributes = [NSDictionary dictionaryWithObject:[UIColor blackColor] forKey:NSForegroundColorAttributeName]; NSAttributedString * subString = [[NSAttributedString alloc] initWithString:strSearchHere attributes:attributes]; [attributedString appendAttributedString:subString]; //Step3 : Append dummy text to blank attributed string NSString *strLongText = @"LongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongTextLongText"; NSDictionary * attributesLong = [NSDictionary dictionaryWithObject:[UIColor clearColor] forKey:NSForegroundColorAttributeName]; NSAttributedString * subStringLong = [[NSAttributedString alloc] initWithString:strLongText attributes:attributesLong]; [attributedString appendAttributedString:subStringLong]; //Step4 : Set attributed placeholder string to searchBar textfield UITextField *searchTextField = [searchBarr valueForKey:@"_searchField"]; searchTextField.attributedPlaceholder = attributedString; searchTextField.leftView = nil; //To Remove Search icon searchTextField.textAlignment = NSTextAlignmentLeft;