如何使用jetpack compose创建圆形轮廓按钮

Question

我正在尝试创建一个圆形OutlinedButton，中间有一个图标，没有文字。

    OutlinedButton(onClick = { /*TODO*/ },
        shape = CircleShape,
        border= BorderStroke(1.dp, Color.Blue)
    ) {
        Icon(Icons.Default.Add, contentDescription = "content description")
    }

最后一个按钮是椭圆形的：

使用IconButton：

    IconButton(onClick = {  },
        modifier = Modifier
            .clip(CircleShape)
            .border(1.dp, Color.Red)
    ) {
        Icon(Icons.Default.Add, contentDescription = "content description",tint = Color.Red)
    }

这是最终结果：

Answer 1

有了1.0.x你可以使用OutlinedButton。
就像是：

    OutlinedButton(onClick = { /*TODO*/ },
        modifier= Modifier.size(50.dp),  //avoid the oval shape
        shape = CircleShape,
        border= BorderStroke(1.dp, Color.Blue),
        contentPadding = PaddingValues(0.dp),  //avoid the little icon
        colors = ButtonDefaults.outlinedButtonColors(contentColor =  Color.Blue)
    ) {
         Icon(Icons.Default.Add, contentDescription = "content description")
    }

或IconButton删除clip修饰符并使用shape内部border参数：

    IconButton(onClick = {  },
          modifier = Modifier
              .then(Modifier.size(50.dp))
              .border(1.dp, Color.Red, shape = CircleShape)
              ) {
        Icon(Icons.Default.Add, contentDescription = "content description", tint = Color.Red)
    }