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POAndroid: How to change Items created with a ViewPager?
 

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  1. POAndroid: How to change Items created with a ViewPager?
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    <p>I'm rebuilding my app design and would like to use a ViewPager for it. The implementation wasn't quite the problem, but I can't figure out how to change my TextViews inside the pages. Hours of googling didn't help me either. Maybe you can help me. I simply need to know how to change the text, textcolor and stuff of my TextViews. main.xml includes my ViewPager and speiseplan.xml includes the TextViews inside a ScrollView, each with an id.</p> <p>main.xml:</p> <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;android.support.v4.view.ViewPager android:layout_height="fill_parent" android:layout_width="fill_parent" android:id="@+id/awesomepager" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>I won't write the whole speiseplan.xml here, since it simply includes a ScrollView and a bunch of TextViews.</p> <p>Implementation in Java is the following:</p> <pre><code>public class Speiseplan extends Activity { private ViewPager myPager; private static int NUM_VIEWS = 14; private MyPagerAdapter myAdapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myAdapter = new MyPagerAdapter(); myPager = (ViewPager) findViewById(R.id.awesomepager); myPager.setAdapter(myAdapter); } private class MyPagerAdapter extends PagerAdapter{ @Override public int getCount() { // TODO Auto-generated method stub return NUM_VIEWS; } @Override public Object instantiateItem(View collection, int position){ LayoutInflater inflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = inflater.inflate(R.layout.speiseplan, null); ((ViewPager) collection).addView(view, 0); return view; } @Override public void destroyItem(View arg0, int arg1, Object arg2){ ((ViewPager) arg0).removeView((View) arg2); } @Override public boolean isViewFromObject(View arg0, Object arg1) { // TODO Auto-generated method stub return arg0 == ((View) arg1); } @Override public Parcelable saveState() { return null; } } } </code></pre> <p>Now how can I access my TextViews and change them. And how can I detect the user sqiping to another page.</p> <p>Thanks for helping!</p>
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