環(huán)信聊天界面,如果是超鏈接,目前版本是不支持打開的,之前是有版本支持的,這個屬于UI層,需要我們自己處理;

思路

• 1.檢測聊天文本,如果是超鏈接,添加下劃線-->UILabel富文本屬性
• 2.監(jiān)聽文本點擊事件,如果是超鏈接打開-->chatViewController代理方法

具體代碼

1.EaseMessageCell添加分類,在分類里判斷是否是超鏈接,是超鏈接加下劃線

@implementation EaseMessageCell (DXLinkClick)

-(void)addLinks:(NSString*)str toLabel:(UILabel*)label
{
    NSMutableAttributedString*strMutable=[[NSMutableAttributedString alloc]initWithString:str];
    [strMutable addAttribute:NSFontAttributeName value:label.font range:NSMakeRange(0, str.length)];
    [strMutable addAttribute:NSForegroundColorAttributeName value:label.textColor range:NSMakeRange(0, str.length)];
    NSDataDetector*detect=[[NSDataDetector alloc]    initWithTypes:NSTextCheckingTypeLink error:nil];

    NSArray*matches=[detect matchesInString:str options:0 range:NSMakeRange(0, str.length)];

    for(NSTextCheckingResult*result in matches)
    {
        if (result.resultType==NSTextCheckingTypeLink) {
            [strMutable addAttribute:NSLinkAttributeName value:@"http://www.baidu.com" range:result.range ];
        }
    }
    if ([matches count]>0) {
        label.attributedText=strMutable;
    }
}
@end

2.在自定義的EaseMessageCell里,在模型的set方法里調(diào)用分類方法

- (void)setModel:(id<IMessageModel>)model
{
    _model = model;
    if ([self respondsToSelector:@selector(isCustomBubbleView:)] && [self isCustomBubbleView:model]) {
        [self setCustomModel:model];
    } else {
        switch (model.bodyType) {
            case eMessageBodyType_Text:
            {
                _bubbleView.textLabel.text = model.text;
                [self addLinks:model.text toLabel:_bubbleView.textLabel];

            }
                break;
   // 以下省略好多字

3.在chatViewController中,重寫代理方法

- (BOOL)messageViewController:(EaseMessageViewController *)viewController didSelectMessageModel:(id<IMessageModel>)messageModel
{
    BOOL flag = NO;
    NSString*str=[messageModel text];
    NSDataDetector*detector=[[NSDataDetector alloc]initWithTypes:NSTextCheckingTypeLink error:nil];
    NSArray*array=[detector matchesInString:str options:0 range:NSMakeRange(0, str.length)];
    if([array count]>0)
       {
        // 這里用Safari打開了,也可以自定義在app內(nèi)打開
          [[UIApplication sharedApplication] openURL:[NSURL URLWithString:resultStr]];
       }
    return flag;
}