android-jetpack

How to add extra colors into MaterialTheme in Android Jetpack Compose?

by

Just a small change to Valeriy Katkov’s answer In some versions of the android studio, the following code will not work @Composable val Colors.myExtraColor: Color get() = if (isLight) Color.Red else Color.Green @Composable fun ExtraColorExample() { Text( text = “test”, color = MaterialTheme.colors.myExtraColor // <– the newly added color ) } It will show an … Read more

How clear focus for BasicTextField in Jetpack Compose?

by

To clear focus from the currently focused component you can use the FocusManager.clearFocus method: val focusRequester = remember { FocusRequester() } val focusManager = LocalFocusManager.current var value by rememberSaveable { mutableStateOf(“initial value”) } BasicTextField( value = value, onValueChange = { value = it }, decorationBox = { innerTextField -> Row( Modifier .background(Color.LightGray, RoundedCornerShape(percent = 30)) … Read more

Android Jetpack Navigation with ViewPager and TabLayout

by

Experimented with different approaches to handle TabLayout with Jetpack Navigation. But hit issues like having a full history of switching between tabs multiple times etc. Browsing known Google Android Issues before raising a request for a demo, I found this existing issue. Its status is Closed marked as Intended Behavior with the following explanation: Navigation … Read more

How to navigate from a composable to an activity or a fragment in Jetpack Compose?

by

In newer version of compose use LocalContext. In older versions (1.0.0-alpha08 and before) use AmbientContext: @Composable fun MainScreen() { val context = LocalContext.current Button(onClick = { context.startActivity(Intent(context, ListActivity::class.java)) }) { Text(text = “Show List”) } }

How to do latest jetpack “View binding” in adapter, bind the views?

by

You can use static bind method of ViewBinding to create binding from already existing layout. Add it as a property to viewholder: class ViewHolder(view: View) : RecyclerView.ViewHolder(view) { val binding = ItemListBinding.bind(view) } then you can access all the views through the binding field, for example: override fun onBindViewHolder(holder: ViewHolder, position: Int) { with(holder) { … Read more