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POViewPager won't scroll to next page
 

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    <p>I have a FragmentActivity that has tabs in it. The first tab has a ViewPager in it. The ViewPager does not work. It displays the first page, but will not scroll to the next page. I saw the instantiateItem get called for the next page. I think maybe the touch is being intercepted by something else, not quite sure.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/tabHost" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;LinearLayout android:id="@+id/main" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:src="@drawable/topbanner" /&gt; &lt;TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /&gt; &lt;FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;LinearLayout android:id="@+id/hometab" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;android.support.v4.view.ViewPager android:id="@+id/product_viewpager" android:layout_width="wrap_content" android:layout_height="wrap_content" /&gt; &lt;/LinearLayout&gt; &lt;ScrollView android:id="@+id/scroller" android:layout_width="fill_parent" android:layout_height="fill_parent" android:fillViewport="true" &gt; &lt;LinearLayout android:id="@+id/articlestab" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;/LinearLayout&gt; &lt;/ScrollView&gt; &lt;LinearLayout android:id="@+id/videostab" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;TextView android:id="@+id/txt3" android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="This is tab 3" /&gt; &lt;/LinearLayout&gt; &lt;/FrameLayout&gt; &lt;/LinearLayout&gt; &lt;/TabHost&gt; </code></pre> <p>And here is the image_page that I put into the ViewPager, I add 6 of them.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/image_page" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/border" android:orientation="horizontal" &gt; &lt;ImageView android:id="@+id/image" android:layout_width="100dip" android:layout_height="100dip" android:layout_gravity="center_vertical" android:src="@drawable/app" /&gt; &lt;TextView android:id="@+id/caption" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Title" android:textStyle="bold" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>here is where I add the adapter:</p> <pre><code> MyPagerAdapter adapter = new MyPagerAdapter(); ViewPager myPager = (ViewPager) findViewById(R.id.product_viewpager); myPager.setAdapter(adapter); myPager.setCurrentItem(0); </code></pre> <p>Here is the adapter:</p> <pre><code>private class MyPagerAdapter extends PagerAdapter { public int getCount() { return 6; } public Object instantiateItem(View collection, int position) { String image = null; String caption = null; Log.d(TAG, "instantiateItem called for position: " + position); if (sliderResults != null) { LinearLayout layout1 = null; LayoutInflater inflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); JSONArray jArray = null; try { jArray = new JSONArray(sliderResults); JSONObject j = jArray.getJSONObject(0); layout1 = (LinearLayout) inflater.inflate(R.layout.image_page, null); switch (position) { case 0: image = "img1"; caption = "capt1"; break; case 1: image = "img2"; caption = "capt2"; break; case 2: image = "img3"; caption = "capt3"; break; case 3: image = "img4"; caption = "capt4"; break; case 4: image = "img5"; caption = "capt5"; break; case 5: image = "img6"; caption = "capt6"; break; } new DownloadImageTask((ImageView) layout1.findViewById(R.id.image), 100).execute("http://removed" + j.getString(image)); ((TextView) layout1.findViewById(R.id.caption)).setText(j.getString(caption)); } catch (JSONException e) { Log.d(TAG, "JSONException"); e.printStackTrace(); } // View view = inflater.inflate(resId, null); ((ViewPager) collection).addView(layout1, 0); return layout1; }else{ Log.d(TAG, "slider results not ready yet"); } return null; } @Override public void destroyItem(View arg0, int arg1, Object arg2) { ((ViewPager) arg0).removeView((View) arg2); } @Override public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == ((View) arg1); } @Override public Parcelable saveState() { return null; } } </code></pre> <p>I created a test view activity with the same code and the ViewPager works. It has something to do with the TabHost I believe. Maybe it is interception the touch events or something?</p>
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