UITextField 光标的位置设置获取
UITextField 光标的位置设置获取
通过给UITextField 加一个拓展
//#import "UITextField+ExtentRange.h"
#import <UIKit/UIKit.h> @interface UITextField (ExtentRange) - (NSRange) selectedRange; - (void) setSelectedRange:(NSRange) range; @end
// #import "UITextField+ExtentRange.m"
#import "UITextField+ExtentRange.h" @implementation UITextField (ExtentRange) - (NSRange) selectedRange { UITextPosition* beginning = self.beginningOfDocument; UITextRange* selectedRange = self.selectedTextRange; UITextPosition* selectionStart = selectedRange.start; UITextPosition* selectionEnd = selectedRange.end; const NSInteger location = [self offsetFromPosition:beginning toPosition:selectionStart]; const NSInteger length = [self offsetFromPosition:selectionStart toPosition:selectionEnd]; return NSMakeRange(location, length); } - (void) setSelectedRange:(NSRange) range { UITextPosition* beginning = self.beginningOfDocument; UITextPosition* startPosition = [self positionFromPosition:beginning offset:range.location]; UITextPosition* endPosition = [self positionFromPosition:beginning offset:range.location + range.length]; UITextRange* selectionRange = [self textRangeFromPosition:startPosition toPosition:endPosition]; [self setSelectedTextRange:selectionRange]; } @end