I want to take screenshot of specific composable function on Jetpack Compose. How can I do this? Please, anyone help me
There is currently no support for this. Compose applications have only one view (window.decorView). You can use traditional methods to get a screenshot of the root view but that is for the entire screen. If you know the location of the composable compoenent on the screen that you want the screenshot of, you will have to apply clipping to the bitmap that you get from the whole screen.
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I'm practicing Jetpack Compose, I'm trying to create a screen that load texts and image content when navigated to.
Here's what I mean;
[Referencing the android developer soothe app.] If I make the rows clickable. And I want to navigate to a screen containing details of Inversions, quick yoga or stretching, depending on which is clicked.
What compose navigation feature should I use to create it??
I did a bit of research previously but I haven't been able to find what I need.
Just in case it's needed, I'll add these.
my compose navigation version;
def nav_version = "2.5.2"
implementation "androidx.navigation:navigation-compose:$nav_version"
I'll be sinerely greatful for any help. Thanks in advance.
If I understood you correctly, you want to navigate to a seperate screen when you click one of the items inside the Horizontal LazyRow. In order to do this you will need to implement navigation using compose navigation library: https://developer.android.com/jetpack/compose/navigation
and you will need to add an onClick event for each item in that LazyRow. For this you would need to set up a NavController, Navhost and Routes for each item.
I have set up something similar but with a navigation Drawer, maybe it will help you understand how the navigation works in jetpack compose!
Navigating between composable's using a Navigation Drawer in Jetpack Compose
Hope this will help you!
I'm hoping to understand how I can achieve this behavior using Jetpack Compose in Android when displaying a dialog on top of the current Composable view.
Desired State:
Animation when clicking on the Filter button at the bottom. This is from the app Culture Trip on iOS.
I currently have a dialog like below. If you notice, my content is still visible but I would like to have it appear as if it's a page layer that's in the background.
Notice the red arrow in the desired state picture. I can mimic that behavior by having a row and setting the background color with padding but looking for a more elegant solution or wondering if there is standard behavior that I don't know about.
Actual State:
For displaying your dialog above, you need to use Box and call dialog at the very bottom of this Box.
The goal is a simple and clean implementation to build a pop-up window similar to the search-filters from the YouTube-App, see picture. Tapping on the half-transparent border should close the pop-up. The same pop-up is supposed to be called from several screens (within nested navigation-structures) and just give back the choices to the respective screen.
I did quite some search and documentation reading, so I seem to have the following four options:
Use an Alert window and heavily modifying the alert message, but this option does not allow me to cancel by clicking on the transparent area.
Using some promising-looking component which is very beta like react-native-popupwindow is not really an option either.
Use a modal component which claims to be a simple way to present content above an enclosing view. According to How to dim a background in react native modal? and Tap outside of modal to close modal (react-native-modal)" this seems to be a possible option.
However, some people say that you should rather use Overlay and use Modal only as a last resort.
Please advice which of the solutions you tested in real life. What do you suggest? Maybe there is even an easier solution?
Related question(s) here on StackOverflow:
Transparent overlay in React Native
Modal is totally your way to go.
My personal choice would be https://github.com/react-native-community/react-native-modal which has the best performances and flexibility overall.
all!
Is there any way to build custom camera component in codename one?
I googled and got about PeerComponents, however don't know how to use it.
I just would like to use it as Label component with 2 buttons (Taking picture button and retaking picture button)
Kindly provide some small sample code for me. Best regards.
[UPDATE]
I need this because of following reason.
First of all, I need square Image taken by camera, and user should be able to know how the picture will be taken.
2 resolutions here:
First, if I have to use full screen camera, it will be better to draw or overlay square rectangle on camera view so that user can know which area will be taken.
Second, if overlaying and drawing is difficult (or should use native code for that), I need some custom components for camera area such like PeerComponent. So I would like to place it anywhere of screen area as square rectangle. Then, users won't need any overlay or drawing something on it because it is already square.
That's all what I need.
Regards.
Yes, it's certainly possible to create a component like this, and we do intend to create one at some point in the future. You can beat us to the punch.
First, you should familiarize yourself with how native interfaces work. This video is a good start:
https://www.codenameone.com/how-do-i---access-native-device-functionality-invoke-native-interfaces.html
This series of blog posts demonstrates how to wrap 3rd party SDKs into codename one on Android and iOS.
https://www.codenameone.com/blog/integrating-3rd-party-native-sdks-part-1.html
https://www.codenameone.com/blog/integrating-3rd-party-native-sdks-part-2.html
https://www.codenameone.com/blog/integrating-3rd-party-native-sdks-part-3.html
Although it doesn't include an example with PeerComponent, it is helpful for getting a grasp on the process. Adding peer components into the mix is really just a matter of returning the corresponding "View" type from a native interface. On Android, that is an android.view.View, on iOS it is a UIView, in Javascript it is an DOM element, in UWP it is a FrameworkElement, and in the simulator, it is a javax.swing.JComponent.
This blog post does include an example of a peer component, but it is targeting UWP:
https://www.codenameone.com/blog/uwp-native-interfaces-mix-c-java.html
Once you have a grasp of the material, you should look at relevant examples. Currently the most complete example I'm aware of of a cn1lib that implements a native peer is the Google Maps lib:
https://github.com/codenameone/codenameone-google-maps
You can see the Android native implementation here, and the iOS native implementation here
You may want to refer to the existing code for image capture in Codename One as well.
Android: https://github.com/codenameone/CodenameOne/blob/master/Ports/Android/src/com/codename1/impl/android/AndroidImplementation.java#L5788-L5811
https://github.com/codenameone/CodenameOne/blob/master/Ports/Android/src/com/codename1/impl/android/AndroidImplementation.java#L5701-L5714
Though it uses intent to open the native capture dialog, so it may not be too relevant.
IOS: https://github.com/codenameone/CodenameOne/blob/master/Ports/iOSPort/nativeSources/IOSNative.m#L2879-L2927
First of all, thanks to everything of codenameone.
I would like to customize camera view, simply overlaying PNG image on the full camera view screen.
Any way how to do it?
Here is code snippet.
Form mainForm = new Form();
ImageViewer iv = new ImageViewer();
mainForm.getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_CAMERA_ALT, 4, (ev) -> {
filePath = Capture.capturePhoto();
setImage(filePath, iv);
});
I couldn't any view component of camera view, because Capture.capturePhoto() works automatically.
Or is there any way to build custom camera component in codename one?
I googled and got about PeerComponents, however don't know how to use it.
Just please provide some small sample code for me.
Best regards.
Currently Capture.capturePhoto() opens its own "window" over the app so you can't customize it. In the future we will likely add a more flexible API to embed the camera into your UI, especially now that we have Z-layering (we can draw over top of native widgets).
If you need this functionality right now, you would need to write a native interface and make your own capture component.