kotlinlang #anko

Hey all! I’ve posted an issue on the anko github (https://github.com/Kotlin/anko/issues/311) that has a couple of my colleagues at Jongla scratching our heads. It looks like the type of black magic that is usually won’t even compile (missing method implementation) but is only caught at runtime. Perhaps there’s some sort of reflection error? The code in question is pretty simple. Alternatively, if anyone has a working implementation of

ViewPager

with

FragmentPagerAdapter

, I'll take it!

adeln

02/28/2017, 12:16 PM

remember that it’s not the instantiation that’s expensive, it’s measure + layout passes

adeln

03/01/2017, 10:08 AM

here’s my blog post on this issue https://meoyawn.tumblr.com/post/154221726637/anko-viewholders-and-applicative-lifting

redrield

03/02/2017, 9:44 PM

Cannot load project: com.intellij.ide.plugins.PluginManager$StartupAbortedException: com.intellij.diagnostic.PluginException: org/jetbrains/android/uipreview/AndroidLayoutPreviewToolWindowManager [Plugin: org.jetbrains.kotlin.android.dsl]

I get this error when trying to load projects in Android Studio after getting the Anko preview plugin

redrield

03/11/2017, 10:59 PM

i.e. centerVertically() doesn't work for any children of the relative layout

tmseiler

03/12/2017, 12:30 AM

I'm pretty new to android development -- should I refer to the main android docs to learn about the UI controls, layouts, and views?

david.bilik

03/13/2017, 7:23 PM

Hello. Do you have any code styling conventions when you define layout with anko? With xml layouts the AS formatter will reorder attributes and you have attributes by definition at the top, but with anko dsl you can do whatever you want and the code can be really messy

adambl4

03/17/2017, 12:44 PM

databinding for rescue

ra1nmak3r

03/17/2017, 9:37 PM

Any news about anko preview in android studio 2.3+?

☝️ 5

:trollface: 5

eygraber

03/24/2017, 1:03 AM

Is there any easy way to get Anko to use theming constructors on API 21+ The trick that is in place now with

AnkoInternals.wrapContextIfNeeded

doesn't always work (e.g. I pass

Widget.AppCompat.Button.Borderless

and instead of a flat button, I get a raised button with certain flat button attributes). I've worked around it for now by declaring my own version of

ViewManager.ankoView

, but it's annoying to either have a generic function (

themedView

) or make a function for every

View

that I would want it for:

inline fun <reified T : View> ViewManager.themedView(theme: Int, init: T.() -> Unit): T {
  val ctx = AnkoInternals.wrapContextIfNeeded(AnkoInternals.getContext(this), theme)
  val view = initiateView(ctx, T::class.java, theme)
  view.init()
  AnkoInternals.addView(this, view)
  return view
}

fun <T : View> initiateView(ctx: Context, viewClass: Class<T>, theme: Int): T {
  fun getConstructor() = viewClass.getConstructor(Context::class.java, AttributeSet::class.java, Int::class.java, Int::class.java)
  fun getConstructor2() = viewClass.getConstructor(Context::class.java)
  fun getConstructor3() = viewClass.getConstructor(Context::class.java, AttributeSet::class.java)

  return try {
    getConstructor().newInstance(ctx, null, 0, theme)
  } catch (e: NoSuchMethodException) {
    try {
      getConstructor2().newInstance(ctx)
    }
    catch (e: NoSuchMethodException) {
      try {
        getConstructor3().newInstance(ctx, null)
      }
      catch (e: NoSuchMethodException) {
        throw AnkoException("Can't initiate View of class ${viewClass.name}: can't find proper constructor")
      }
    }
  }
}

blakelee

03/26/2017, 6:21 AM

How do you add a fragment to an activity? I'm trying to add caldroid. I tried using 'FragmentActivity().supportFragmentManager.beginTransaction().replace(R.id.calendar_view, CalendarFragment()).commit()' That's inside my onCreate method for my activity. It keeps giving me 'java.lang.IllegalStateException: Activity has been destroyed'

redrield

03/28/2017, 12:02 AM

Any way that I can achieve that?

Mark McCormick

04/05/2017, 5:40 PM

I am wondering if there is a way to set elevation = 0 for appBarLayout from API 16? For backwards compatibility I would like to use app:elevation (from support library) not android:elevation, not quite sure how to acomplish that. Thank you for your feedback

ghosalmartin

04/07/2017, 10:04 AM

does anyone know how doAsync can modify the UI without being on the UI threaD?

miha-x64

04/11/2017, 1:04 PM

Anko grew up since 0.9.1, try using
+
last version is

0.10.0-beta-2

😱 1

👎 1

joe_androidsecurity

04/16/2017, 3:19 PM

I don't know how to solve this. I have an Anko layout, inside I have a button with onClick. In the onClick I want to change properties of other layouts, for example I have a verticalLayout whom background I want to change. Giving the verticalLayout a variable does not work. example code verticalLayout{ button.onClick{ // change the background of verticalLayout } }

anthonyeef

04/19/2017, 2:12 AM

try to use

imageView

with svg resource but svg is not showing. Anyone met the same issue?

blakelee

04/19/2017, 9:46 PM

Now there is another issue. I got it working except when I open the keyboard it collapses it. Here is a picture of it before: http://imgur.com/ghj0gnm and after http://imgur.com/UPfeo1H Edit: note to self, use layout_toRightOf instead of percentages

anthaugh

04/24/2017, 7:57 AM

has anyone succeeded in setting drawerLayout with navigationView header? If so, has anyone succeeded in showing drawer menu OVER the action bar? so far this is what i got:

coordinatorLayout {
			drawerLayout {
				relativeLayout {
					MY MAIN CONTENT
				}
				navigationView {
					inflateHeaderView(R.layout.header) <- UGLY HACK, I CANNOT GET IT TO WORK ANY OTHER WAY
				}
			}

			appBarLayout(R.style.AppTheme_AppBarOverlay) {
				toolbar()
			}
	}

but still it shows under the action bar (it's overlapped by it)

blakelee

04/24/2017, 11:42 PM

I'm trying to make a addTextChangedListener on an edit Text but it's being strange. I tried

editText { addTextChangedListener (object : TextWatcher) {...}}

There is no member onTextChanged

mikesol

05/05/2017, 10:40 PM

hey all! do any anko-ninjas know how to reduce the tabPadding of a tabLayout in anko? it is part of the app namespace in the XML, so maybe it’s not possible yet…

mikesol

05/11/2017, 1:09 PM

hey guys! do you know if anko 10 is backward compatible with anko 9? if not, what are the api breaking changes? i tried to update a project but saw that onClick for views is no longer there (or at least not where it used to be) but perhaps I messed up the update…?

deviant

05/12/2017, 7:34 PM

is there a way to

include

AnkoComponent into another AnkoComponent? like we do it with xml layout

blakelee

05/15/2017, 7:40 AM

Does anyone know if there is an issue with setting an image for an image view? I'm trying to set it by uri and it's just a gray image :(

deviant

05/16/2017, 7:11 PM

guys, is it possible to apply xml style to the view?

than_

05/19/2017, 1:18 PM

Did anybody succeed to use anko with AS 3.0?

aakaashjois

05/22/2017, 11:03 AM

I have declared the

frameLayout

inside the onCreate method. I tried to create

var enableCheckBox: CheckBox

before declaring the frameLayout. But when i tried to access

enableCheckBox

in the rest of the onCreate method, it gave an error saying

Variable "enableCheckBox" must be initialized

miha-x64

05/22/2017, 11:08 AM

You want to use a view within a method, not within a class, right?

var enableCheckBox: CheckBox? = null

... {
    enableCheckBox = checkBox { ... }
}

enableCheckBox!!....

anthaugh

05/30/2017, 4:02 PM

how can I apply bottomMargin recursively? I can set width and height like this

applyRecursively { v: View ->
                when (v) {
                    is EditText -> v.lparams(matchParent, wrapContent) { bottomMargin = dip(8) }
                     }
                }

but the margin isn't set. How should I code this?

antonioleiva

05/31/2017, 7:44 AM

🤔 not sure about the difference between

launch(UI)

and

async(UI)

tbh, but worth trying

Title

antonioleiva

05/31/2017, 7:44 AM

🤔 not sure about the difference between

launch(UI)

and

async(UI)

tbh, but worth trying

louiscad

06/03/2017, 11:29 PM

antonioleiva: launch returns

Unit

while

async

returns a

Deffered

on which you can call

await()

from a coroutine. I use

async

for methods in a Repository, so the UI code using it can await for completion without blocking UI thread in coroutines

View count: 3