android studio add - ScrollView Layout non riempie l'intero schermo





2 Answers

<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" >

Nel tuo ScrollView aggiungi un attributo es.

android:fillViewport="true"
xml java wrap_content

Ho ottenuto un'attività con due Fragment (una lista una normale). E il normale Fragment gonfia una Scrollview contenente un LineaLayout (verticale) e questo layout contiene TextViews . ScrollView e layout_width e layout_height sono match_parent , quindi penso che si debba usare l'intero schermo. Ma in fondo c'è ancora un "vuoto". Spero che puoi aiutarmi.

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>

il frammento che gonfia questo 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 };
}

Molte grazie.

Modifica: Anche il problema è già stato risolto con: android: fillViewPort = "true", voglio mostrarti il ​​problema.

Ma non ho abbastanza reputazione per pubblicare una foto. Scusate!




Ho avuto un problema simile e ho potuto risolverlo solo con una classe di supporto. Ho trovato il codice originale online e questa è la mia implementazione.

Classe Java:

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" />





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