ScrollView不能完全滚动到子视图

Question

So I' added a bunch of EditTexts programatically to a ScrollView (the quantity depends on users' input) and I'm trying to check if the user left one empty, set an error and focus the particular edittext. The problem is that when I try to scroll to that specific edittext, it doesn´t scroll enough, so some of those won't event reach the visible part of the scrollview.

I want the EditText to be in the uppest visible part of the ScrollView so that the keyboard won't hide it.

Any ideas?

Here is that part of the method:

public void StartNextActivity(View view) {
    String et = null;
    ArrayList<String> ids = new ArrayList<String>();
    for (int i = 0; i < x; i++) {                    //x is users' input
        et = editTexts.get(i).getText().toString();
        if (TextUtils.isEmpty(et)){
            editTexts.get(i).setError("Please insert an Id")
            ScrollView sView = (ScrollView) findViewById(R.id.scrollView3);
            sView.fullScroll(editTexts.get(i).getTop());
            return;
        }else {
            ids.add(et);
        }
    }
    Intent next_intent = new Intent(this, NextActivity.class);
    startActivity(next_intent);
}

And this is the xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:fillViewport="true"
tools:context=".FirstActivity"
tools:layout_editor_absoluteY="25dp">


<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="50dp"
    android:layout_marginEnd="16dp"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:text="Please insert something"
    android:textSize="18sp"
    app:layout_constraintBottom_toTopOf="@+id/scrollView3"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<ScrollView
    android:id="@+id/scrollView3"
    android:layout_width="379dp"
    android:layout_height="0dp"
    android:layout_marginBottom="16dp"
    android:layout_marginEnd="16dp"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:fillViewport="true"
    android:isScrollContainer="true"
    app:layout_constraintBottom_toTopOf="@+id/button4"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/textView">

    <LinearLayout
        android:id="@+id/layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" />
</ScrollView>

<Button
    android:id="@+id/button4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="16dp"
    android:layout_marginEnd="16dp"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:onClick="StartCarRentActivity"
    android:text="Continue"
    android:textSize="18sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/scrollView3" />

Answer 1

你可以试试这个

sView.smoothScrollTo((int)editTexts.getX(),(int)editTexts.getY());

Answer 2

try using a view below scrollview and set its visibility to invisible

<view
    android:layout_width="match_parent"
    android:layout_height="70dp"
    android:layout_alignBottom="@+id/relDisplayName"
    android:layout_alignParentStart="true"
    android:visibility="invisible"
    android:layout_alignParentLeft="true" />