Compose mutableStateOf
如果只使用var count = 1; 變數再重新繪製手機介面時就又變成1，所以要使用 by remeber
以下count為mutable類別，要使用count.value讀取
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var count = remember {
mutableStateOf(1)
}
Text(text = "xx${count.value}xxx", Modifier.clickable {
count.value++
Log.d("xxxx","I comin")
} )
以下count為int類別，就不用count.value
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var count by remember {
mutableStateOf(1)
}
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@Composable
fun StateSample() {
var count by remember {
mutableStateOf(1)
}
Log.d("xxxx","outter${count}")
Text(text = "xx${count}xxx", Modifier.clickable {
count++
Log.d("xxxx","I comin")
} )
}