iOS7 TextKit：项目符号对齐

我正在为iOS 7编写一个应用程序,我正在尝试在不可编辑的UITextView中的子弹点上获得体面的格式.

只需插入一个项目符号字符就足够了,但是当然左侧的缩进不会随之而来. iOS 7上最简单的方法是在一个项目符号点之后设置一个左缩进？

提前致谢,

坦率

解决方法

下面我使用代码来设置一个项目符号的段落.这是直接从一个工作的应用程序,并用于将风格应用于整个段落,以响应用户单击格式化按钮.我试图把所有的依赖方法,但可能错过了一些.

请注意,我以厘米设置大多数缩进,因此在列表末尾使用转换功能.

我还在检查一个制表符的存在(iOS上没有标签键),并自动插入破折号和制表符.

如果你需要的是段落样式,那么看下面的最后几个方法,其中firstLineIndent等设置.

请注意,这些调用全部包装在[textStorage beginEditing / endEditing]中.尽管(IBAction)下面的方法没有被UI对象直接调用.

- (IBAction) styleBullet1:(id)sender
        {
            NSRange charRange = [self rangeForUserParagraphAttributeChange];
            NSTextStorage *myTextStorage = [self textStorage];

            // Check for "-\t" at beginning of string and add if not found
            NSAttributedString *attrString = [myTextStorage attributedSubstringFromRange:charRange];
            NSString *string = [attrString string];

            if ([string rangeOfString:@"\t"].location == NSNotFound) {
                NSLog(@"string does not contain tab so insert one");
                NSAttributedString * aStr = [[NSAttributedString alloc] initWithString:@"-\t"];
                // Insert a bullet and tab
                [[self textStorage] insertAttributedString:aStr atIndex:charRange.location];

            } else {
                NSLog(@"string contains tab");
            }

            if ([self isEditable] && charRange.location != NSNotFound)
            {
                [myTextStorage setAttributes:[self bullet1Style] range:charRange];
            }
        }

        - (NSDictionary*)bullet1Style
        {
            return [self createStyle:[self getBullet1ParagraphStyle] font:[self normalFont] fontColor:[UIColor blackColor] underlineStyle:NSUnderlineStyleNone];

        }

        - (NSDictionary*)createStyle:(NSParagraphStyle*)paraStyle font:(UIFont*)font fontColor:(UIColor*)color underlineStyle:(int)underlineStyle
        {
            NSMutableDictionary *style = [[NSMutableDictionary alloc] init];
            [style setValue:paraStyle forKey:NSParagraphStyleAttributeName];
            [style setValue:font forKey:NSFontAttributeName];
            [style setValue:color forKey:NSForegroundColorAttributeName];
            [style setValue:[NSNumber numberWithInt: underlineStyle] forKey:NSUnderlineStyleAttributeName];

            FLOG(@" font is %@",font);

            return style;
        }

        - (NSParagraphStyle*)getBullet1ParagraphStyle
        {
            NSMutableParagraphStyle *para;
            para = [self getDefaultParagraphStyle];
            NSMutableArray *tabs = [[NSMutableArray alloc] init];
            [tabs addObject:[[NSTextTab alloc] initWithTextAlignment:NSTextAlignmentLeft location:[self ptsFromCMF:1.0] options:nil]];
            //[tabs addObject:[[NSTextTab alloc] initWithType:NSLeftTabStopType location:[self ptsFromCMF:1.0]]];
            [para setTabStops:tabs];
            [para setDefaultTabInterval:[self ptsFromCMF:2.0]];
            [para setFirstLineHeadIndent:[self ptsFromCMF:0.0]];
            //[para setHeaderLevel:0];
            [para setHeadIndent:[self ptsFromCMF:1.0]];
            [para setParagraphSpacing:3];
            [para setParagraphSpacingBefore:3];
            return para;
        }
    - (NSMutableParagraphStyle*)getDefaultParagraphStyle
    {
        NSMutableParagraphStyle *para;
        para = [[NSParagraphStyle defaultParagraphStyle]mutableCopy];
        [para setTabStops:nil];
        [para setAlignment:NSTextAlignmentLeft];
        [para setBaseWritingDirection:NSWritingDirectionLeftToRight];
        [para setDefaultTabInterval:[self ptsFromCMF:3.0]];
        [para setFirstLineHeadIndent:0];
        //[para setHeaderLevel:0];
        [para setHeadIndent:0.0];
        [para setHyphenationFactor:0.0];
        [para setLineBreakMode:NSLineBreakByWordWrapping];
        [para setLineHeightMultiple:1.0];
        [para setLineSpacing:0.0];
        [para setMaximumLineHeight:0];
        [para setMinimumLineHeight:0];
        [para setParagraphSpacing:6];
        [para setParagraphSpacingBefore:3];
        //[para setTabStops:<#(NSArray *)#>];
        [para setTailIndent:0.0];
        return para;
    }
-(NSNumber*)ptsFromCMN:(float)cm
{
    return [NSNumber numberWithFloat:[self ptsFromCMF:cm]];
}
-(float)ptsFromCMF:(float)cm
{
    return cm * 28.3464567;
}