我正在寻找一种方法来改变气泡中的消息文本颜色,我发现在objc示例中很容易,尝试在swift上做同样的事情,但失败了,有什么解决方案吗?
这是OBJC代码
- (UICollectionViewCell *)collectionView:(JSQMessagesCollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
/**
* Override point for customizing cells
*/
JSQMessagesCollectionViewCell *cell = (JSQMessagesCollectionViewCell *)[super collectionView:collectionView cellForItemAtIndexPath:indexPath];
/**
* Configure almost *anything* on the cell
*
* Text colors, label text, label colors, etc.
*
*
* DO NOT set `cell.textView.font` !
* Instead, you need to set `self.collectionView.collectionViewLayout.messageBubbleFont` to the font you want in `viewDidLoad`
*
*
* DO NOT manipulate cell layout information!
* Instead, override the properties you want on `self.collectionView.collectionViewLayout` from `viewDidLoad`
*/
JSQMessage *msg = [self.demoData.messages objectAtIndex:indexPath.item];
if (!msg.isMediaMessage) {
if ([msg.senderId isEqualToString:self.senderId]) {
cell.textView.textColor = [UIColor blackColor];
}
else {
cell.textView.textColor = [UIColor whiteColor];
}
cell.textView.linkTextAttributes = @{ NSForegroundColorAttributeName : cell.textView.textColor,
NSUnderlineStyleAttributeName : @(NSUnderlineStyleSingle | NSUnderlinePatternSolid) };
}
cell.accessoryButton.hidden = ![self shouldShowAccessoryButtonForMessage:msg];
return cell;
}**
我的快速审判
在根据需要使用override将其编辑为
collectionview
后,它再次崩溃。最佳答案
从上面发布的目标C代码中,您需要使用JSQMessagesCollectionViewCell
创建super.collectionView(_:cellForRowAt:)
实例,因此请尝试这样做。
let cell = super.collectionView(collectionView, cellForItemAt: indexPath) as! JSQMessagesCollectionViewCell
完整解决方案:
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = super.collectionView(collectionView, cellForItemAt: indexPath) as! JSQMessagesCollectionViewCell
// messages to show
let msg = incomingMessages[indexPath.row]
if !msg.isMediaMessage {
if msg.senderId! == senderId {
cell.textView.textColor = UIColor.white
}else{
cell.textView.textColor = UIColor.black
}
cell.textView.linkTextAttributes = [NSForegroundColorAttributeName: cell.textView.textColor ?? UIColor.white]
}
return cell
}
关于swift - 更改聊天气泡中的textview颜色,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/41346175/