Why does my android activity always start scrolled

Question

Whenever I start this activity, it always starts bottomed out--scrolled all the way to the bottom. I am not doing anything weird in the activity OnCreate (or anywhere for that matter) that I would expect to change the scroll position. I have tried setting focus to the topmost focusable control, and the scrollto method, but neither of them are working. Besides, none of my other activities has this problem. Here's the layout:

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scroll"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/edit_refresh_update_header"
            android:textSize="18sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Variable:"
            android:textSize="18sp"/>

        <Spinner
            android:id="@+id/edit_refresh_variables_spinner"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Network:"
            android:textSize="18sp"/>

        <RadioGroup
            android:id="@+id/widget1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:orientation="vertical">

            <RadioButton
                android:text="Web"
                android:id="@+id/edit_refresh_update_rb_web"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="NetRadioButtonSelected"
                android:checked="true"/>

            <RadioButton
                android:text="Socket Server"
                android:id="@+id/edit_refresh_update_rb_socket_server"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="NetRadioButtonSelected"/>
        </RadioGroup>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Socket server request type:"
            android:textSize="18sp"/>

        <Spinner
            android:id="@+id/edit_refresh_socket_server_req_types_spinner"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Socket server body:"
            android:textSize="18sp"/>

        <EditText
            android:layout_width="match_parent"
            android:id="@+id/edit_refresh_update_ss_body"
            android:layout_height="wrap_content"
            android:enabled="false"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Url:"
            android:textSize="18sp"/>

        <EditText
            android:layout_width="match_parent"
            android:id="@+id/edit_refresh_update_url"
            android:layout_height="wrap_content"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>

        <Button
            android:text="Save refresh update"
            android:id="@+id/edit_refresh_save_btn"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:layout_marginLeft="20dip"
            android:layout_marginRight="20dip"
            android:layout_marginBottom="20dp"
            android:layout_alignParentBottom="true"
            android:onClick="SaveRefreshUpdate">
        </Button>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="\n"
            android:textSize="4sp"/>
    </LinearLayout>
</ScrollView>

Answer 1

Just make it not focusable in onCreate()

editText.setFocusable(false);

and use

editText.setOnClickListener(new ....){
 ......
  editText.setFocusable(true);
  editText.setFocusableInTouchMode(true);
  editText.requestFocus();

  showSoftKeyboard(); //Use InputMethodManager to open soft Keyboard

 ......
 };

and it will not scroll down to Edittext next time, a fragment or activity is created.

Answer 2

Instead of polluting items in your layout, you can add this into your Activity/Class:

    ScrollView scrollView = (ScrollView) findViewById(R.id.scrollView);
    scrollView.setFocusableInTouchMode(true); 
    scrollView.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);

This way it isn't an element within your scrollView getting focus, it's your scrollView as a container which get's the first focus, moving onto the child view's after this.

Answer 3

Add these two lines in your ScrollView

 android:focusableInTouchMode="true"
 android:descendantFocusability="blocksDescendants"

Answer 4

For Xamarin Android development, if you want to do @Graeme solution then:

// Set Focus to ScrollView
ScrollView scrollView = (ScrollView)FindViewById(Resource.Id.scrollView);
scrollView.FocusableInTouchMode = true;
scrollView.DescendantFocusability = Android.Views.DescendantFocusability.BeforeDescendants;

Answer 5

I don't know why but you could experiment with

ScrollView sv = (ScrollView) findViewById(R.id.scroll);
sv.scrollTo(0,0);

in your onCreate to manually scroll it to where you like it to be.

Answer 6

When Android starts an activity, some control needs to take focus. When there's no designated control to take focus, the system chooses the first eligible control that wants focus. If you set the following property in your LinearLayout - android:focusableInTouchMode="true" your LinearLayout will be focused on start and your activity won't scroll to EditText in the bottom.