[英]Avoid accidental tap/touch in a Jetpack Compose Slider which is placed inside in a scrollable column
我有一個 Slider 放置在可滾動的列內。 當我滾動瀏覽組件時,有時 slider 值會因意外觸摸而發生變化。 我怎樣才能避免這種情況?
我應該禁用 slider 上的水龍頭嗎? 如果是,我該怎么做?
有沒有像嵌套滾動而不是列這樣的替代方法可以防止這種情況發生?
@Composable fun ColumnScope.FilterRange( title: String, range: ClosedFloatingPointRange<Float>, rangeText: String, valueRange: ClosedFloatingPointRange<Float>, onValueChange: (ClosedFloatingPointRange<Float>) -> Unit, ) { Spacer(modifier = Modifier.height(Size_Regular)) Text( text = title, style = MaterialTheme.typography.h6 ) Spacer(modifier = Modifier.height(Size_X_Small)) Text( text = rangeText, style = MaterialTheme.typography.subtitle1 ) RangeSlider( modifier = Modifier.fillMaxWidth(), values = range, valueRange = valueRange, onValueChange = { onValueChange(it) }) Spacer(modifier = Modifier.height(Size_Small)) Divider(thickness = DividerSize) }
我會禁用 RangeSlider 並僅在您點擊它時啟用它。 您可以通過點擊列中的其他任何位置來禁用它。 這是用於模仿失去焦點的類似行為。 這是一個例子:
class MainActivity : ComponentActivity() {
@ExperimentalMaterialApi
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
startActivity(intent)
setContent {
var rangeEndabled by remember { mutableStateOf(false)}.apply { this.value }
var sliderPosition by remember { mutableStateOf(0f..100f) }
Text(text = sliderPosition.toString())
Column(modifier = Modifier
.fillMaxSize()
.verticalScroll(rememberScrollState())
.pointerInput(Unit) {
detectTapGestures(
onTap = {
rangeEndabled = false
}
)
}) {
repeat(30) {
Text(it.toString())
}
RangeSlider(
enabled = rangeEndabled,
values = sliderPosition,
onValueChange = { sliderPosition = it },
valueRange = 0f..100f,
onValueChangeFinished = {
// launch some business logic update with the state you hold
// viewModel.updateSelectedSliderValue(sliderPosition)
},
modifier = Modifier.pointerInput(Unit) {
detectTapGestures(
onTap = {
rangeEndabled = true
}
)
}
)
repeat(30) {
Text(it.toString())
}
}
}
}
}
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