composable | docker compose file based on git repo branches | Continuous Deployment library
kandi X-RAY | composable Summary
kandi X-RAY | composable Summary
A tool for generating a docker compose file based on git repo branches
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QUESTION
how can we pass parameter to viewModel in jetpack compose?
this is my composable
...ANSWER
Answered 2021-Jun-15 at 08:00you need to create a factory to pass dynamic parameter to ViewModel like this:
QUESTION
When navigating from Composable A -> Composable B, say Composable A is a Lazy List scrolled halfway down and Composable B is a Lazy List Item Details Screen. Currently, the lazy list scroll position isn't stored, and when navigating back to Composable A from B, the list starts from item index 0. We could store it in a ViewModel, and read the value back, as well as use rememberSaveable, however, I am unsure as to how to implement rememberSaveable so that it scrolls to the saved position after back navigation.
Which method would be preferred to use following good code practices?
Edit: My problem arises from the fact that the listState isn't stored when navigating back from composable B to A. So if we scroll to the bottom and select an item and look at its details, when we navigate back to the list it is scrolled to the top, instead of saving its scrollState.
My composable
...ANSWER
Answered 2021-Jun-15 at 14:10I'm leaving this question up in case anyone else ever gets stuck in my situation, but the code works as it is meant to, I just committed a folly.
I didn't account for height changes with asynchronous image loading and as such, the list would not be at its saved position upon composable navigation, due to the list state being smaller than the screen height on returning to the composable.
However, If the images were given static containers to load into to that don't change their size, then upon back navigation, the composable would correctly display the saved list state.
QUESTION
I want the size of the text to be in .dp so that it doesn't change according to the system font.
How to achieve this in Jetpack Compose "Text" composable
ANSWER
Answered 2021-Jun-14 at 02:46Using em made my font size consistent, irrespective of the system font size
Eg.Text("ABCD", fontSize = 10.em)
The question was also asked in google's issuetracker https://issuetracker.google.com/190644747
QUESTION
I wanted to build a very simple demo. A button which you can click, and it counts the clicks.
Code looks like this:
...ANSWER
Answered 2021-Jun-09 at 08:12You need to use the "remember" keyword for the recomposition to happen each time, as explained here: https://foso.github.io/Jetpack-Compose-Playground/general/state/
In short, your composable would look like this:
QUESTION
I'm currently trying out Android Compose. I have a Text that shows price of a crypto coin. If a price goes up the color of a text should be green, but if a price goes down it should be red. The function is called when a user clicks a button. The problem is that the function showPrice() is called multiple times (sometimes just once, sometimes 2-4 times). And because of that the user can see the wrong color. What can I do to ensure that it's only called once?
MainActivity:
...ANSWER
Answered 2021-Jun-13 at 03:17What can I do to ensure that it's only called once?
Nothing, that's how it's meant to work. In the View system you would not ask "Why is my view invalidated 3 times?". The framework invalidates (recomposes) the view as it needs, you should not need to know or care when that happens.
The issue with your code is that your Composable is reading the old value from preferences, that is not how it should work, that value should be provided by the viewmodel as part of the state. Instead of providing just the new price, expose a Data Class that has both the new and old price and then use those 2 values in your composable to determine what color to show, or expose the price and the color to use.
QUESTION
I have a following composable:
...ANSWER
Answered 2021-Jun-15 at 09:08Judging from the curry api, curry a function either calls the function if all its parameters are provided or returns a new function that requires only a subset of parameters if some are provided.
For example in your code
QUESTION
I have installed VSCode Keymap plugin in Android Studio. When I press Command . to import Text composable it says org.w3c.dom.Text? (multiple choices...) ⌘.. In vscode if there were multiple classes with same name then it would show me a dropdown to choose what class to import.
How can I do the same in Android Studio? I am on macOS Big Sur with Android Studio 2020.3.1 Beta 3.
...ANSWER
Answered 2021-Jun-15 at 06:29Just press optionKey & Enter (or return key) together
QUESTION
I have viewModel for my ProfileScreen.
...ANSWER
Answered 2021-May-16 at 17:09Your viewModel gets destroyed whenever you destroy the composable, it can survive re-compositions but as soon as your composable gets destroyed it will be destroyed.
What you can do is create the viewModel in a scope that lives longer than the ProfileScreen composable and then pass the viewModel as parameter to it.
Something like this should work.
QUESTION
setContent {
AndroidView(modifier = Modifier) {
SurfaceView(it).apply {
holder.addCallback(this@MainActivity)
}
}
Column {
Button(onClick = {}) {
Text(text = "Button")
}
...
}
}
ANSWER
Answered 2021-Jun-14 at 19:55If anyone stumbles over this question:
This is a known bug in the current Jetpack Compose build (1.0.0-beta08) which is supposed to be fixed with the next version.
As a workaround I was able to do it the other way round, creating the SurfaceView as well as a ComposableView in XML and adding my content to the ComposableView.
QUESTION
I would like to create a composable component very similar to Instagram story loading bar with 10 seconds of duration.
I had an idea how to do it but I'm not how to executed. I was thinking about adding a static bar (grey color) using a BOX and then add another bar (white color) which animates from 0 to final of composable width in 10 seconds.
Do you have any idea how I can implement this component?
...ANSWER
Answered 2021-Jun-11 at 19:55You can animate the progress of a LinearProgressIndicator.
Something like:
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