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@OptIn(ExperimentalFoundationApi::class) | |
@Composable | |
fun HorizontalPagerWithNextPrevButtonExample() { | |
val pagerState = rememberPagerState() | |
val coroutineScope = rememberCoroutineScope() | |
Box ( | |
modifier = Modifier | |
.fillMaxWidth() | |
.height(300.dp) | |
) { | |
HorizontalPager(pageCount = 5, state = pagerState) { pageIndex -> | |
Box( | |
modifier = Modifier | |
.fillMaxSize() | |
.background(Color.Gray), | |
contentAlignment = Alignment.Center | |
) { | |
Text(text = "Current Page Index $pageIndex") | |
} | |
} | |
Row(modifier = Modifier | |
.align(Alignment.BottomCenter) | |
.padding(bottom = 16.dp), | |
horizontalArrangement = Arrangement.spacedBy(8.dp) | |
) { | |
val prevButtonVisible = remember { | |
derivedStateOf { | |
pagerState.currentPage > 0 | |
} | |
} | |
val nextButtonVisible = remember { | |
derivedStateOf { | |
pagerState.currentPage < 4 // total pages are 5 | |
} | |
} | |
Button( | |
enabled = prevButtonVisible.value, | |
onClick = { | |
val prevPageIndex = pagerState.currentPage - 1 | |
coroutineScope.launch { pagerState.animateScrollToPage(prevPageIndex) } | |
}, | |
) { | |
Text(text = "Prev") | |
} | |
Button( | |
enabled = nextButtonVisible.value , | |
onClick = { | |
val nextPageIndex = pagerState.currentPage + 1 | |
coroutineScope.launch { pagerState.animateScrollToPage(nextPageIndex) } | |
}, | |
) { | |
Text(text = "Next") | |
} | |
} | |
} | |
} |
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