There is no ripple effect when I click on MyBox() I've added MyTheme(){} to main #Composable screen but it doesn't work. Is something missing?
#Composable
private MyBox(onClickInvoked: () -> Unit) {
MyAppTheme(isSystemInDarkTheme()) {
Box(
modifier = Modifier
.fillMaxWidth()
.wrapContentHeight()
.clip(RoundedCornerShape(10.dp))
.background(MaterialTheme.colors.onBackground)
.clickable(onClick = { onClickInvoked.invoke() })
.padding(horizontal = 10.dp, vertical = 15.dp)
) {
Text(
text = "My text",
modifier = Modifier
.align(Alignment.CenterStart)
.padding(end = 95.dp)
.wrapContentWidth()
.wrapContentHeight(),
color = MaterialTheme.colors.primary
)
Image(
painter = painterResource(R.drawable.icon),
modifier = Modifier
.align(Alignment.CenterEnd)
.padding(end = 20.dp)
.size(60.dp)
)
}
}
}
With compose 1.0.5, I see the default indication after set clickable is
LocalIndication.current. And LocalIndication.current is PlatformRipple. Therefore, after you set clickable to your Box, it will have ripple effect.
In your case, I think the ripple effect won't display because your Box background is too dark (normally MaterialTheme.colors.onBackground is black on Light theme)
I think you can change the ripple effect color to make it easy to see.
Surface(
onClick = { onClickInvoked.invoke() },
modifier = Modifier.fillMaxWidth(),
shape = RoundedCornerShape(10.dp),
color = MaterialTheme.colors.onBackground, // normally it is black on Light theme
indication = rememberRipple(color = Color.White) // color for your ripple, you can use other suitable MaterialTheme.colors for your case to support Light/Dark mode
) {
Box(modifier = Modifier.padding(horizontal = 10.dp, vertical = 15.dp)) {
// your Box content
...
}
}
There is a Modifier.indication but after testing I see it not working with Modifier.clickable so I use Surface
I don't really know if there is a problem with your theme. I try to pass the material theme, and the ripples will display normally
MaterialTheme() {
Box(
modifier = Modifier
.fillMaxWidth()
.wrapContentHeight()
.clip(RoundedCornerShape(10.dp))
.background(MaterialTheme.colors.secondary)
.clickable(onClick = { t = "My text" })
.padding(horizontal = 10.dp, vertical = 15.dp)
) {
Text(
text = t,
modifier = Modifier
.align(Alignment.CenterStart)
.padding(end = 95.dp)
.wrapContentWidth()
.wrapContentHeight(),
color = MaterialTheme.colors.primary
)
Image(
painter = painterResource(R.drawable.ic_launcher_foreground),
modifier = Modifier
.align(Alignment.CenterEnd)
.padding(end = 20.dp)
.size(60.dp),
contentDescription = ""
)
}
}
Related
The dragging part is possible on whole rectangle (Yellow in video) and I want it to be only allowed on the Grey icon
I can drag any part of the yellow part, whether up or down, I want to allow that behavior of dragging only on the Grey part
Left Video is the same as right video, except I made the right's sheetBackgroundColor transparent
#OptIn(ExperimentalMaterialApi::class)
#Composable
fun HomeScreen(modifier: Modifier = Modifier) {
BottomSheetScaffold(
topBar = { AppBar() },
sheetElevation = ZERO_DP,
sheetPeekHeight = BOTTOM_ICON_CONTAINER_SIZE,
sheetBackgroundColor = Color.Transparent,
sheetContent = {
BottomSheetContent(modifier)
}
) {
HomeContent()
}
#Composable
fun BottomSheetContent(
modifier: Modifier = Modifier,
) {
Column(
modifier = modifier
.fillMaxWidth()
.fillMaxHeight(0.8f)
) {
Box(
modifier = modifier
.padding(end = SPACING_QUADRUPLE)
.align(Alignment.End)
.clip(
RoundedCornerShape(
topStart = TRIPLE_CORNER_DP,
topEnd = TRIPLE_CORNER_DP
)
)
.size(BOTTOM_ICON_CONTAINER_SIZE)
.background(MaterialTheme.colors.secondary)
,
contentAlignment = Alignment.BottomCenter
)
{
Icon(
modifier = modifier,
painter = painterResource(id = R.drawable.ic_qr_code),
contentDescription = stringResource(
id = R.string.bottom_sheet_puller
),
tint = Color.Unspecified
)
}
Text(
modifier = modifier
.fillMaxWidth()
.background(MaterialTheme.colors.surface)
.padding(
start = SPACING_DOUBLE,
end = SPACING_DOUBLE,
bottom = SPACING_NORMAL
),
text = "Scan Serial With QR",
style = MaterialTheme.typography.h3,
)
Box(
modifier = modifier
.fillMaxSize()
.background(color = Color.DarkGray)
)
}
}
Wrong Behavior:
Correct Intended Behavior:
I tried replacing a rectangle composables with simple box, but bottom sheet was still considering the full width of the composable
There must be a better solution to intercept a drag gesture and leave all of it within the green box only, but this might suffice.
I made some changes to your BottomSheetContent, intercepting a drag gesture from a Row weighted transparent component and leaving it empty, you can try this one, and the drag gesture is only accepted by the green box,
#Composable
fun BottomSheetContent(
modifier: Modifier = Modifier,
) {
Column(
modifier = modifier
.fillMaxWidth()
.fillMaxHeight(0.8f)
) {
Row {
Box(
modifier = Modifier
.weight(1f)
.draggable(
orientation = Orientation.Vertical,
state = rememberDraggableState {
Toast.makeText(context, "Non Draggable Area", Toast.LENGTH_SHORT).show()
}
).fillMaxWidth().height(150.dp).background(Color.Transparent)) {
}
Box(
modifier = modifier
.padding(end = 8.dp)
.clip(
RoundedCornerShape(
topStart = 12.dp,
topEnd = 12.dp
)
)
.size(150.dp)
.background(MaterialTheme.colors.secondary),
contentAlignment = Alignment.BottomCenter
) {
Icon(
modifier = modifier,
imageVector = Icons.Default.Add,
contentDescription = "",
)
}
}
Text(
modifier = modifier
.fillMaxWidth()
.background(MaterialTheme.colors.surface)
.padding(
start = 8.dp,
end = 8.dp,
bottom = 4.dp
),
text = "Scan Serial With QR",
style = MaterialTheme.typography.h3,
)
Box(
modifier = modifier
.fillMaxSize()
.background(color = Color.DarkGray)
)
}
}
I can't show my pointer click here, but the toast shows when the left area outside of the green box is being dragged.
I am trying to overlap two different compose elements. I want to show a toast kind of message at the top whenever there is an error message. I don't want to use a third party lib for such an easy use case. I plan to use the toast in every other composable screen for displaying error message. Below is the layout which i want to achieve
So I want to achieve the toast message saying "Invalid PIN, please try again".
#Composable
fun MyToast(title: String) {
Card(
modifier = Modifier
.absoluteOffset(x = 0.dp, y = 40.dp)
.background(
color = MaterialTheme.colors.primaryVariant,
shape = RoundedCornerShape(10.dp)
), elevation = 20.dp
) {
Row(
modifier = Modifier
.background(color = MaterialTheme.colors.primaryVariant)
.padding(12.dp),
horizontalArrangement = Arrangement.Start,
verticalAlignment = Alignment.CenterVertically
) {
Image(
painter = painterResource(id = R.drawable.error_circle),
contentDescription = title
)
Text(
text = title,
fontFamily = FontFamily(Font(R.font.inter_medium)),
fontSize = 12.sp,
color = MaterialTheme.colors.primary,
modifier = Modifier.padding(horizontal = 10.dp)
)
}
}
}
and my screen composable is as follows
#Composable
fun Registration(navController: NavController, registrationViewModel: RegistrationViewModel) {
Scaffold() {
Box(){
MyToast(
title = "Invalid pin, please try again"
)
Column() {
//my other screen components
}
}
}
I will add the AnimatedVisibility modifier later to MyToast composable. First I need to overlap MyToast over all the other elements and somehow MyToast is just not visible
If you want the child of a Box to overlay/overlap its siblings behind, you should put it at the last part in the code
Box(
modifier = Modifier.fillMaxSize(),
contentAlignment = Alignment.Center
) {
Box(
modifier = Modifier.background(Color.Red).size(150.dp)
)
// your Toast
Box(
modifier = Modifier.background(Color.Green).size(80.dp)
)
}
So if I put the green box before the bigger red box like this
Box(
modifier = Modifier.fillMaxSize(),
contentAlignment = Alignment.Center
) {
// your Toast
Box(
modifier = Modifier.background(Color.Green).size(80.dp)
)
Box(
modifier = Modifier.background(Color.Red).size(150.dp)
)
}
the green box will hide behind the red one
You have to solutions, you can either put the Toast in the bottom of your code because order matters in compose:
#Composable
fun Registration(navController: NavController, registrationViewModel: RegistrationViewModel) {
Scaffold() {
Box() {
Column() {
//my other screen components
}
MyToast(
title = "Invalid pin, please try again"
)
}
}
}
Or you can keep it as it is, but add zIndex to the Toast:
#Composable
fun MyToast(title: String) {
Card(
modifier = Modifier
.absoluteOffset(x = 0.dp, y = 40.dp)
.zIndex(10f) // add z index here
.background(
color = MaterialTheme.colors.primaryVariant,
shape = RoundedCornerShape(10.dp)
), elevation = 20.dp
) {
Row(
modifier = Modifier
.background(color = MaterialTheme.colors.primaryVariant)
.padding(12.dp),
horizontalArrangement = Arrangement.Start,
verticalAlignment = Alignment.CenterVertically
) {
Image(
painter = painterResource(id = R.drawable.error_circle),
contentDescription = title
)
Text(
text = title,
fontFamily = FontFamily(Font(R.font.inter_medium)),
fontSize = 12.sp,
color = MaterialTheme.colors.primary,
modifier = Modifier.padding(horizontal = 10.dp)
)
}
}
}
Note: elevation in Card composable is not the same as elevation in XML so it's not going to make the composable in the top, it will just add a shadow but if you want to give the composable a higher z order use Modifier.zIndex(10f)
I am trying to have a splash screen in our application and I got stuck Abit with the jetpack Compose design. So I want to have a background gradient, I am now using the image which does not fit well in the phone and want to center my logo and text in the middle of the screen how can I achieve that. Mostly centering since I have tried the gradient part and I have no success. Here is my code
Here is my background component
#Composable
fun BackgroundComponents(
#DrawableRes backgroundDrawableRes: Int,
contentDescription: String?,
modifier: Modifier = Modifier,
painter: Painter,
alignment: Alignment = Alignment.Center,
) {
Box(
modifier = modifier
) {
Image(
painter = painterResource(id = backgroundDrawableRes),
contentDescription = contentDescription,
modifier = modifier.matchParentSize()
)
Box(
contentAlignment = Alignment.Center
) {
Image(
painter = painter,
contentDescription = contentDescription,
alignment = alignment
)
}
Text(
modifier =
modifier.padding(top = 36.dp),
text = "Hello and welcome to our app",
color = (colorResource(id = R.color.white)),
fontSize = 16.sp,
)
}
}
This is how I am calling it on the Screen
#Composable
fun Splash(modifier: Modifier = Modifier) {
Column(modifier = modifier.fillMaxSize()) {
BackgroundComponents(
backgroundDrawableRes = R.drawable.ic_launcher_foreground,
contentDescription = "",
modifier = modifier.fillMaxSize(),
painter = painterResource(id = coil.base.R.drawable.notification_bg)
)
}
}
I would like to push the icon and text in the middle and centered, also instead of using an image can I draw that gradient?
You can apply the gradient to the parent Box as background modifier and then just apply the expected alignment to the composable inside the Box.
Something like:
Box(
modifier = Modifier
.fillMaxSize()
.background(
Brush.horizontalGradient(
colors = listOf(
Color.Blue,
Teal200
)
)
),
contentAlignment = Alignment.Center
) {
Column(horizontalAlignment = Alignment.CenterHorizontally) {
Image(
painter = painterResource(id = R.drawable.xx),
contentDescription = "contentDescription",
)
Spacer(Modifier.height(36.dp))
Text(
text = "Hello and welcome to our app",
color = White,
fontSize = 16.sp,
)
}
}
I have comment box and need to put icon on specific position ( bottom right ). I need to make something like position absolute where my icon button need to be bottom right inside comment box. Here is image what I am trying to achieve. Any help or idea?
You can do it by using Modifier.offset{} and putting your Icon inside a Box with Modifier.align(Alignment.BottomEnd)
#Composable
private fun Test() {
Column(modifier = Modifier.padding(10.dp)) {
Box(
modifier = Modifier
.width(200.dp)
.background(Color.LightGray.copy(alpha = .5f), RoundedCornerShape(8.dp))
.padding(4.dp)
) {
Column(
modifier = Modifier.fillMaxWidth()
) {
Text("Title", fontSize = 20.sp)
Text("Comment")
}
val offsetInPx = with(LocalDensity.current) {
16.dp.roundToPx()
}
Icon(
imageVector = Icons.Default.Settings,
contentDescription = null,
modifier = Modifier
.offset {
IntOffset(-offsetInPx, offsetInPx)
}
.shadow(2.dp, RoundedCornerShape(40))
.background(Color.White)
.padding(horizontal = 10.dp, vertical = 4.dp)
.size(30.dp)
.align(Alignment.BottomEnd),
tint = Color.LightGray
)
}
Spacer(modifier = Modifier.height(4.dp))
Text("Reply", color = Color.Blue)
}
}
In the code the image border only on the sides, not on the corners.
for the button, the background goes out of the shape/border.
I only managed to "fix" the button by using a fixed height but I don't understand why a fixed height help and I wonder if there is another way to do this.
#Composable
fun Test(){
Column(modifier = Modifier.padding(5.dp)) {
Image(
painter = painterResource(id = R.drawable.ic_close),
contentDescription = null,
modifier = Modifier
.clip(CircleShape)
.border(1.dp, Color.Red)
.size(20.dp)
)
OutlinedButton(
onClick = { },
border = BorderStroke(1.dp, Color.Red),
shape = RoundedCornerShape(5.dp),
modifier = Modifier
.clip(RoundedCornerShape(5.dp))
.fillMaxWidth()
.background(Color.Green)
) {}
}
}
For the Image, remove the clip modifier and use the shape inside the border parameter:
Image(
painter = painterResource(id = R.drawable.ic_xxx),
contentDescription = null,
modifier = Modifier
//.clip(CircleShape)
.border(1.dp, Color.Red, CircleShape)
.size(20.dp)
)
For the OutlinedButton use the colors attribute to assign the background color instead of the Modifier.background
OutlinedButton(
onClick = { },
border = BorderStroke(1.dp, Color.Red),
shape = RoundedCornerShape(5.dp),
modifier = Modifier
//.clip(RoundedCornerShape(5.dp))
.fillMaxWidth(),
//.background(Color.Green),
colors = ButtonDefaults.outlinedButtonColors(backgroundColor = Green),
)