Background
I have a layout that has some views at the top, which should be scrollable together with an EditText below them.
The EditText takes the rest of the space, as much space as it needs.
Here's a sample POC layout that demonstrate it (used just 2 EditTexts here) :
<android.support.v4.widget.NestedScrollView android:id="@+id/nestedScrollView"
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent" android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical">
<EditText
android:id="@+id/titleEditText" android:layout_width="match_parent" android:layout_height="wrap_content"
android:ellipsize="end" android:hint="title" android:imeOptions="actionNext|flagNoExtractUi"
android:inputType="text|textAutoCorrect|textCapSentences" android:maxLines="1"
android:nextFocusDown="@id/contentEditText" android:nextFocusForward="@id/contentEditText"
android:scrollHorizontally="true" android:textColor="#2a2f3b" android:textColorHint="#a3a3a3"
android:textSize="21sp"/>
<EditText
android:id="@+id/contentEditText" android:layout_width="match_parent" android:layout_height="match_parent"
android:gravity="top" android:hint="content" android:background="@android:drawable/alert_light_frame"
android:imeOptions="actionDone|flagNoEnterAction|flagNoExtractUi" android:textSize="18sp"
android:inputType="textMultiLine|textAutoCorrect|textCapSentences"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
I've set a background frame to have a visual indication of how large the EditText is.
The problem
I've found so many solutions to what I wrote, but none of them actually handles the scrolling well.
What I'm always seeing, is at least one of those issues:
- Unable to scroll entire page (only EditText might be scrollable, which I'm trying to avoid), so can't get to the views at the top anymore.
- When I enter text, the caret might go outside of the visible area
- As I type more and more lines, it doesn't scroll the entire page. Only in the EditText itself.
What I've tried
I've tried those solutions:
- All from here, here, here , here. Maybe more, but I didn't keep enough track...
- I tried various
windowSoftInputModevalues in the manifest, and tried to setisNestedScrollingEnabledin the NestedScrollView. - Tried various configurations in the XML, to let the EditText take as much space as it needs, to prevent it from being scrollable within it.
The question
How can I make the bottom EditText to take as much space as it needs, and still be able to scroll entire NestedScrollView, without an issue in editing ?
EDIT: since the original app is a bit more complex, having some views at the bottom (inside what is like a toolbar) that auto-hide when you are not in focus on the bottom EditText , this made the answer I've found not to work.
Also, I've accidentally granted the bounty to the wrong answer, so here's a new bounty, on the more complex POC. The question stays the same. The NestedScrollView should remain on the same place, without scrolling when focusing on the bottom EditText.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:orientation="vertical">
<View
android:layout_width="0dp" android:layout_height="0dp" android:focusable="true"
android:focusableInTouchMode="true"/>
<android.support.v4.widget.NestedScrollView
android:id="@+id/nestedScrollView" android:layout_width="match_parent" android:layout_height="0px"
android:layout_weight="1" android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical">
<EditText
android:id="@+id/titleEditText" android:layout_width="match_parent" android:layout_height="wrap_content"
android:ellipsize="end" android:hint="title" android:imeOptions="actionNext|flagNoExtractUi"
android:inputType="text|textAutoCorrect|textCapSentences" android:maxLines="1"
android:nextFocusDown="@id/contentEditText" android:nextFocusForward="@id/contentEditText"
android:scrollHorizontally="true" android:textColor="#2a2f3b" android:textColorHint="#a3a3a3"
android:textSize="21sp"/>
<android.support.constraint.ConstraintLayout
android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent"
android:background="@android:drawable/alert_light_frame" android:clickable="true"
android:focusable="false">
<EditText
android:id="@+id/contentEditText" android:layout_width="match_parent"
android:layout_height="wrap_content" android:background="@null" android:gravity="top"
android:hint="content" android:imeOptions="actionDone|flagNoEnterAction|flagNoExtractUi"
android:inputType="textMultiLine|textAutoCorrect|textCapSentences" android:textSize="18sp"/>
</android.support.constraint.ConstraintLayout>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<LinearLayout
android:layout_width="match_parent" android:layout_height="wrap_content" android:animateLayoutChanges="true"
android:orientation="vertical">
<LinearLayout
android:id="@+id/autoHideLayout" android:layout_width="match_parent" android:layout_height="wrap_content"
android:orientation="horizontal" android:visibility="gone" tools:visibility="visible">
<Button
android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="button"/>
<Button
android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="button2"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
container.setOnClickListener {
contentEditText.requestFocus()
contentEditText.setSelection(contentEditText.length())
}
contentEditText.setOnFocusChangeListener { view, hasFocus ->
autoHideLayout.visibility = if (hasFocus) View.VISIBLE else View.GONE
if (hasFocus)
nestedScrollView.scrollTo(0, 0)
}
}
}
