// 创建对象
UITextview *textView = [[UITextView alloc] init];
// 设置属性
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
// 设置行间距
paragraphStyle.lineSpacing = 5;
NSDictionary *attributes = @{
NSFontAttributeName:[UIFont systemFontOfSize:17],
NSParagraphStyleAttributeName:paragraphStyle
};
textView.attributedText = [[NSAttributedString alloc] initWithString:[self bejsonWithString:json] attributes:attributes];
- NSMutableParagraphStyle简单介绍
@property(NS_NONATOMIC_IOSONLY) CGFloat lineSpacing; // 行间距
@property(NS_NONATOMIC_IOSONLY) CGFloat paragraphSpacing; // 段落间距
@property(NS_NONATOMIC_IOSONLY) NSTextAlignment alignment;
@property(NS_NONATOMIC_IOSONLY) CGFloat firstLineHeadIndent; // 第一行头缩进
@property(NS_NONATOMIC_IOSONLY) CGFloat headIndent; // 头缩进
@property(NS_NONATOMIC_IOSONLY) CGFloat tailIndent; // 尾部缩进
@property(NS_NONATOMIC_IOSONLY) NSLineBreakMode lineBreakMode; // 换行模式
@property(NS_NONATOMIC_IOSONLY) CGFloat minimumLineHeight; // 最小行高
@property(NS_NONATOMIC_IOSONLY) CGFloat maximumLineHeight; // 最大行高
@property(NS_NONATOMIC_IOSONLY) NSWritingDirection baseWritingDirection; // The base writing direction for the receiver.
@property(NS_NONATOMIC_IOSONLY) CGFloat lineHeightMultiple; // The line height multiple
@property(NS_NONATOMIC_IOSONLY) CGFloat paragraphSpacingBefore;
@property(NS_NONATOMIC_IOSONLY) float hyphenationFactor;
// Adds tabStop to the receiver.
-(void)addTabStop:(NSTextTab *)anObject NS_AVAILABLE(10_0, 9_0);
// Removes the first text tab whose location and type are equal to those of tabStop.
-(void)removeTabStop:(NSTextTab *)anObject NS_AVAILABLE(10_0, 9_0);
-(void)setParagraphStyle:(NSParagraphStyle *)obj NS_AVAILABLE(10_0, 9_0);
// 开始编辑
-(BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
NSLog(@"%s",__FUNCTION__);
return YES;
}
// 结束编辑
-(BOOL)textViewShouldEndEditing:(UITextView *)textView
{
NSLog(@"%s",__FUNCTION__);
return NO;
}
// 编辑发生变化,再次编辑
-(void)textViewDidChange:(UITextView *)textView
{
NSLog(@"%s",__FUNCTION__);
}
// 是否替换range内的文字text
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
// 当输入换行符,退出编辑
if ([text isEqualToString:@"\n"]) {
[textView resignFirstResponder];
return NO;
}
return YES;
}