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;
}