DropdownMenu
下拉列表菜单
@Composable
fun DropdownMenu(
expanded: Boolean?,
onDismissRequest: (() -> Unit)?,
modifier: Modifier? = Modifier,
offset: DpOffset? = DpOffset(0.dp, 0.dp),
properties: PopupProperties? = PopupProperties(focusable = true),
content: (@Composable @ExtensionFunctionType ColumnScope.() -> Unit)?
): Unit
- expanded 是否展开
- onDismissRequest 取消回调
- offset 设置偏移量
- properties 可以设置 focusable、dismissOnBackPress、dismissOnClickOutside、securePolicy
@Composable
fun DropdownMenuSample() {
var expanded by remember {
mutableStateOf(false)
}
Column() {
IconButton(onClick = {
expanded = !expanded
}) {
Icon(imageVector = Icons.Default.PinDrop, contentDescription = null)
}
DropdownMenu(
expanded = expanded, onDismissRequest = {
Log.i("======", "==========")
expanded = false
}, offset = DpOffset(x = 10.dp, y = 10.dp),
properties = PopupProperties(
focusable = true,
dismissOnBackPress = false,
dismissOnClickOutside = false,
securePolicy = SecureFlagPolicy.SecureOn,//设置安全级别，是否可以截屏
)
) {
DropdownMenuItem(onClick = { expanded = false }) {
Text(text = "Menu 0")
}
DropdownMenuItem(onClick = { expanded = false }) {
Text(text = "Menu 1")
}
DropdownMenuItem(onClick = { expanded = false }) {
Text(text = "Menu 2")
}
}
}
}
