ios开发--表情和文字混排

//对这样的字符串进行表情和文字混排，把表情[xx]替换才图片。例如：@"test[哈哈]，test[嘻嘻]。。。。"

//你需要建立一个[xx]和表情文件的映射表 

#define BEGIN_FLAG @"["
#define END_FLAG @"]"
#define KFacialSizeWidth  18
#define KFacialSizeHeight 18



-(void)getImageRange:(NSString*)message : (NSMutableArray*)array {
    NSRange range=[message rangeOfString: BEGIN_FLAG];
    NSRange range1=[message rangeOfString: END_FLAG];
    //判断当前字符串是否还有表情的标志。
    if (range.length>0 && range1.length>0) {
        if (range.location > 0) {
            [array addObject:[message substringToIndex:range.location]];
            [array addObject:[message substringWithRange:NSMakeRange(range.location, range1.location+1-range.location)]];
            NSString *str=[message substringFromIndex:range1.location+1];
            [self getImageRange:str :array];
        }else {
            NSString *nextstr=[message substringWithRange:NSMakeRange(range.location, range1.location+1-range.location)];
            //排除文字是“”的
            if (![nextstr isEqualToString:@""]) {
                [array addObject:nextstr];
                NSString *str=[message substringFromIndex:range1.location+1];
                [self getImageRange:str :array];
            }else {
                return;
            }
        }
        
    } else if (message != nil) {
        [array addObject:message];
    }
}

-(UIView *)assembleMessageAtIndex : (NSString *) message  maxW:(int)MAX_WIDTH
{
    NSMutableArray *array = [[NSMutableArray alloc] init];
    [self getImageRange:message :array];
    UIView *returnView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
    NSArray *data = array;
    UIFont *fon = [UIFont systemFontOfSize:16.0f];
    CGFloat upX = 0;
    CGFloat upY = 0;
    CGFloat X = 0;
    CGFloat Y = 0;
    NSArray* fStr=FACE_TEXT_ARRAY;
    NSArray* fImg=FACE_IMAGE_ARRAY;
    if (data) {
        for (int i=0;i < [data count];i++) {
            NSString *str=[data objectAtIndex:i];
            NSLog(@"str--->%@",str);
            if ([str hasPrefix: BEGIN_FLAG] && [str hasSuffix: END_FLAG])
            {
                if (upX >= MAX_WIDTH)
                {
                    upY = upY + KFacialSizeHeight;
                    upX = 0;
                    X = MAX_WIDTH;
                    Y = upY;
                }
                NSLog(@"str(image)---->%@",str);
                NSString *imageName=[[NSBundle mainBundle] pathForResource:[fImg objectAtIndex:[fStr indexOfObject:str]] ofType:nil];
                SCGIFImageView *img=[[SCGIFImageView alloc] initWithGIFFile:imageName];
                img.frame = CGRectMake(upX, upY, KFacialSizeWidth, KFacialSizeHeight);
                [returnView addSubview:img];
                [img release];
                upX=KFacialSizeWidth+upX;
                if (X= MAX_WIDTH)
                    {
                        upY = upY + KFacialSizeHeight;
                        upX = 0;
                        X = MAX_WIDTH;
                        Y =upY;
                    }
                    CGSize size=[temp sizeWithFont:fon constrainedToSize:CGSizeMake(MAX_WIDTH, 40)];
                    UILabel *la = [[UILabel alloc] initWithFrame:CGRectMake(upX,upY,size.width,size.height)];
                    la.font = fon;
                    la.text = temp;
                    la.backgroundColor = [UIColor clearColor];
                    [returnView addSubview:la];
                    [la release];
                    upX=upX+size.width;
                    if (X