android compose Switch开关 使用

android compose Switch开关 使用

/**
 * Author : wn
 * Email : maoning20080809@163.com
 * Date : 2026/1/4 20:44
 * Description : Switch 开关控件
 */
class SwitchActivity : ComponentActivity(){

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            testSwitch()
        }
    }

    @Preview
    @Composable
    private fun testSwitch(){
        var switchState by remember { mutableStateOf(false) }

        Column(
            modifier = Modifier.fillMaxWidth(),
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            Spacer(modifier = Modifier.height(30.dp))
            Text(text = "Switch开关使用", fontSize = 30.sp)
            Switch(switchState,
                onCheckedChange = {
                    switchState = it
                }, modifier = Modifier.padding(16.dp))
            Text(text = if(switchState) "Switch is On" else "Switch is OFF")
        }
    }
}