Question

当我点击播放按钮时，

发件人按钮会发生变化，但是当我点击桌面视图中的另一个按钮时，按钮第一个按钮图像不会改变播放

 @IBAction func playSound(sender: UIButton) {
if self.player != nil && self.player.playing {
            player.stop()
            sender.setImage(UIImage(named: "play.png"), forState: UIControlState.Normal)            
        }
else {
sender.setImage(UIImage(named: "pause.png"), forState: UIControlState.Normal) 
}
}

Answer 1

listeners:{
          afterrender:function(combo){
              var me = this,
              values = me.getValueRecords();
              me.inputEl.set( {
              'placeholder': values.length ? '' :'Hello'});
              me.inputEl.set({'style':'background:red;text-decoration:underline;'});
          },
          change:function(tag){
              window.r = this;
              console.log(this);
              var me = this,
              values = me.getValueRecords();
              me.inputEl.set( {
              'placeholder': values.length ? '' :'Hello'});
          }
     }

Answer 2

尝试为按钮设置背景图像

let image = UIImage(named: "play.png") as UIImage
sender.setBackgroundImage(image, forState: UIControlState.Normal)

希望这有帮助。

Answer 3

是那个电话单选按钮。我从不在单元格中使用单选按钮。这对我来说很难。我是新手如果你需要它，那就是：Radio button logic in UItableViewCells。但我用其他方式：didSelectRowAtIndexPath。单击单元格时，按钮当前显示暂停图像，其他按钮显示播放图像。你可以参考它

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    currentIndexPath = indexPath;
    YourTableViewCell *cell = nil;

    if (!previousIndexPath) {
        previousIndexPath = currentIndexPath;
    } 
    if (previousIndexPath != currentIndexPath) {
        cell = (YourTableViewCell *) [_yourTableView cellForRowAtIndexPath:previousIndexPath];
        [cell.radioBtn setBackgroundImage:[UIImage imageNamed:@"play"] forState:UIControlStateNormal];
        cell = (YourTableViewCell *) [_yourTableView  cellForRowAtIndexPath:currentIndexPath];
        [cell.radioBtn setBackgroundImage:[UIImage imageNamed:@"pause"] forState:UIControlStateNormal];
        previousIndexPath = currentIndexPath;
    }


    if (previousIndexPath == currentIndexPath) {
        cell = (YourTableViewCell *) [_yourTableView  cellForRowAtIndexPath:previousIndexPath];
        [cell.radioBtn setBackgroundImage:[UIImage imageNamed:@"pause"] forState:UIControlStateNormal];
    }
}

播放快速完成时更改按钮图像

3 个答案: