CODEWITHSUNDEEP
androidandroid-layoutandroid-fragments
j0chn
j0chn

Reputation: 1113

ScrollView Layout does not fill the whole screen

I got an Activity with two Fragments (one list one normal). And the normal Fragment inflates a Scrollview containing a LineaLayout (vertical) and this layout contains TextViews. The ScrollView and layout_width and layout_height are match_parent, so I think the whole screen should be used. But on the bottom there is still a "gap". I hope you can help me.

ScrollView.xml

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/titlescreen_bg"
    android:orientation="vertical"
    android:paddingTop="60dp"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/tv_headline"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:paddingBottom="60dp"
        android:paddingTop="60dp"
        android:textIsSelectable="false"
        android:textSize="@dimen/fontsize_slogan_titlescreen" />

    <TextView
        android:id="@+id/tv_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:paddingBottom="30dp"
        android:paddingTop="30dp"
        android:textIsSelectable="false"
        android:textSize="@dimen/fontsize_slogan_titlescreen" />
</LinearLayout>

</ScrollView>

the fragment inflating this layout.

package wak.iage.layout;

import wak.iage.R;
import android.app.Fragment;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MenuContentFragment extends Fragment
{
LinearLayout.LayoutParams   relativeParams  = new LinearLayout.LayoutParams(
                                                    LayoutParams.MATCH_PARENT,
                                                    LayoutParams.MATCH_PARENT);
LinearLayout                topLayout       = null;
TextView                    body            = null;
TextView                    head            = null;

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.menu_content_main, container);
    return v;
}

public void changeText(String title, String content) {
    topLayout = (LinearLayout) getActivity().findViewById(
            R.id.LinearLayout1);
    head = (TextView) getActivity().findViewById(R.id.tv_headline);
    body = (TextView) getActivity().findViewById(R.id.tv_content);

    if (body == null) {
        topLayout.removeViews(1, topLayout.getChildCount() - 1);
        body = new TextView(getActivity().getApplicationContext());
        body.setPadding(0, 30, 0, 20);
        body.setTextColor(Color.BLACK);
        body.setTextSize(22);
        body.setGravity(Gravity.CENTER_HORIZONTAL);
        topLayout.addView(body, relativeParams);
    }

    body.setText(content);
    head.setText(title);
}

public void addGlossary() {
    if (body != null) {
        topLayout.removeView(body);
    }

    int i = 0;

    for (int id : GLOSSARY) {
        TextView glossary = new TextView(getActivity()
                .getApplicationContext());
        glossary.setText(getString(id));
        glossary.setTextColor(Color.BLACK);
        if (i % 2 == 0) {
            glossary.setTypeface(Typeface.DEFAULT_BOLD);
            glossary.setTextSize(22);
            glossary.setPadding(0, 10, 0, 10);
        }
        topLayout.addView(glossary, relativeParams);
        i += 1;
    }
}

public static final int[]   GLOSSARY    = {
        R.string.GlossaryAndroidOSTitle, R.string.GlossaryAndroidOSContent,
        R.string.GlossaryAppTitle, R.string.GlossaryAppContent,
        R.string.GlossaryCloudTitle, R.string.GlossaryCloudContent,
        R.string.GlossaryDonwloadTitle, R.string.GlossaryDonwloadContent,
        R.string.GlossaryFacebookTitle, R.string.GlossaryFacebookContent,
        R.string.GlossaryGPSTitle, R.string.GlossaryGPSContent,
        R.string.GlossaryHomescreenTitle,
        R.string.GlossaryHomescreenContent, R.string.GlossaryPasswordTitle,
        R.string.GlossaryPasswordContent, R.string.GlossaryRouterTitle,
        R.string.GlossaryRouterContent, R.string.GlossarySDTitle,
        R.string.GlossaySDContent, R.string.GlossayStandbyTitle,
        R.string.GlossayStandbyContent, R.string.GlossaryTabletTitle,
        R.string.GlossaryTabletContent, R.string.GlossaryTouchscreenTitle,
        R.string.GlossaryTouchscreenContent, R.string.GlossayWidgetsTitle,
        R.string.GlossayWidgetsContent, R.string.GlossayWLANTitle,
        R.string.GlossayWLANContent };
}

Thanks a lot.

Edit: Even the proble is already fixed with: android:fillViewPort="true", I want to show you the problem.

But I don't have enough reputation to post a picture. Sorry!

Upvotes: 87

Views: 75985

Answers (5)

RUSHIKESH KARDE
RUSHIKESH KARDE

Reputation: 281

Replace ScrollView with NestedScrollView it will also solve the problem of nested scrolling.

<androidx.core.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent">

</androidx.core.widget.NestedScrollView>

Upvotes: 1

Dan Oprean
Dan Oprean

Reputation: 56

I had a similar problem and could only fix it with a Helper Class. I found the original code online and this is my implementation of it.

Java class:

public class ImageViewHelper extends android.support.v7.widget.AppCompatImageView {

    public ImageViewHelper(Context context) {
        super(context);
    }

    public ImageViewHelper(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ImageViewHelper(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        Drawable d = getDrawable();
        if (d != null) {
            int w = MeasureSpec.getSize(widthMeasureSpec);
            int h = w * d.getIntrinsicHeight() / d.getIntrinsicWidth();
            setMeasuredDimension(w, h);
        }
        else super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

XML:

<com.example.app.ImageViewHelper
    android:id="@+id/img"
    android:src="@drawable/start"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:adjustViewBounds="true" />

Upvotes: 0

Trojan Horse
Trojan Horse

Reputation: 213

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true"
    android:fadeScrollbars="false"
    android:scrollbars="vertical" >

In your ScrollView add an attribute ie.

android:fillViewport="true"

Upvotes: 12

Streets Of Boston
Streets Of Boston

Reputation: 12596

If i'm not mistaken, the ViewGroup's height (LinearLayout's height in your case), that is the (only) child inside a ScrollView, is always interpreted as wrap_content, since that content can be larger than the ScrollView's height (hence the scrollbars).

This also means that if the content is smaller, the ScrollView's content (child) may not necessarily stretch to fill the screen.

In order to visually help you fix this, we need to see a screenshot of your problem.

Maybe setting android:fillViewport="true" on the ScrollView will fix your issue:

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/scrollView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true">

Upvotes: 312

alex
alex

Reputation: 6409

inflater.inflate(R.layout.menu_content_main, container);

should be

inflater.inflate(R.layout.menu_content_main, container, false);

Upvotes: 2

Related Questions