UITextview
1, 在光标位置插入输入的文本
NSUInteger location = self.selectedRange.location;
2, 对textView赋值以后默认滚动到最后 滚动到光标位置代码为
// 调整光标
self.selectedRange = NSMakeRange(location + result.length, 0);
// 滚动到光标位置
[self scrollRangeToVisible:self.selectedRange];
// 这个属性暂时记录, 没有用到 网上说有用 但是需要在viewdidappear
// self.textView.layoutManager.allowsNonContiguousLayout = NO;
http://www.jianshu.com/p/1a647f65b1b6
总的代码为
-(void)voiceKeyboardDidRecognitionResult:(NSString *)result {
// 获得光标所在的位置
NSUInteger location = self.selectedRange.location;
// 将UITextView中的内容进行调整（主要是在光标所在的位置进行字符串截取，再拼接你需要插入的文字即可）
NSString *content = self.text;
NSString *tempContent = [NSString stringWithFormat:@"%@%@%@",[content substringToIndex:location],result,[content substringFromIndex:location]];
// 将调整后的字符串添加到UITextView上面
self.text = tempContent;
GFVoiceToolBar *toolbar = (GFVoiceToolBar *)self.inputAccessoryView;
[toolbar setLabelText:[NSString stringWithFormat:@"已经输入 %zd 字", self.text.length]];
// 调整光标
self.selectedRange = NSMakeRange(location + result.length, 0);
// 滚动到光标位置
[self scrollRangeToVisible:self.selectedRange];
}
UITextField
1, UITextField没有selectedRange属性
所以创建分类 让他拥有
UITextField+TKExtentRange.h
#import <UIKit/UIKit.h>
@interface UITextField (TKExtentRange)
- (NSRange) selectedRange;
- (void) setSelectedRange:(NSRange) range;
@end
UITextField+TKExtentRange.m
#import "UITextField+TKExtentRange.h"
@implementation UITextField (TKExtentRange)
- (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 // 备注：UITextField必须为第一响应者才有效
{
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
