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POinflate custom Gallery Layout change properties fail
 

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  1. POinflate custom Gallery Layout change properties fail
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    <p>I tried to build my first custom gui element but I get problems when I try to change appearance or adapter (using Gallery) later in code.</p> <p>My Problem: I can't change Custom Gallery properties</p> <p>My actual Code:</p> <p>First I create an XML which is the widget customGallery.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;merge xmlns:android="http://schemas.android.com/apk/res/android"&gt; &lt;ImageButton android:id="@+id/toLeft" android:background="@drawable/arrow_left" android:layout_width="wrap_content" android:layout_height="40dip" android:layout_marginBottom="1dip" /&gt; &lt;Gallery android:id="@+id/gallery" android:layout_width="fill_parent" android:layout_height="40dip" android:layout_toRightOf="@+id/toLeft" android:spacing="40dip" android:scrollbars="horizontal"/&gt; &lt;ImageButton android:id="@+id/toRight" android:background="@drawable/arrow_right" android:layout_width="wrap_content" android:layout_height="40dip" android:layout_toRightOf="@+id/gallery" /&gt; &lt;/merge&gt; </code></pre> <p>Later i create a test.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/lin_layout" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;com.Test.GallerySlider android:id="@+id/choose" android:layout_span="2" android:layout_width="300dip" android:layout_height="wrap_content" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>My next Step was to include this custom Widget into my project and change the adapter from my Widget:</p> <pre><code>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); LinearLayout lineLayout = (LinearLayout) findViewById(R.id.lin_layout); ViewStub st3 = new ViewStub(TestwidgetActivity.this); LinearLayout.LayoutParams paramst3 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); lineLayout.addView(st3,paramst3); st3.setLayoutResource(R.layout.test); View st3InflaView =st3.inflate(); GallerySlider gSlider= (GallerySlider) st3InflaView.findViewById(R.id.choose); gSlider.setNewAdapter( new ArrayAdapter&lt;String&gt;(this, android.R.layout.customGallery, new String[] {"1 ","2","3","4"})); } </code></pre> <p>This is the Widgetclass I wrote:</p> <pre><code> public class GallerySlider extends RelativeLayout implements OnClickListener { private ArrayAdapter&lt;String&gt; adapter; private Gallery gallery; private ImageButton toLeftBtn = null; private ImageButton toRightbtn = null; public GallerySlider(Context context) { super(context, null); init(context); } public GallerySlider(Context context, AttributeSet attrs) { super(context, attrs); init(context); } public GallerySlider(Context context, AttributeSet attrs, int defStyle) { super(context, attrs); init(context); } public void init(Context ctx){ LayoutInflater inflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE) ; inflater.inflate(R.layout.customGallery, this, true); toLeftBtn = (ImageButton) findViewById(R.id.toLeft); toLeftBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(gallery.getSelectedItemPosition() &gt; 0){ gallery.setSelection(gallery.getSelectedItemPosition()-1); } } }); toRightbtn = (ImageButton) findViewById(R.id.toRight); toRightbtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(gallery.getSelectedItemPosition() &lt; gallery.getAdapter().getCount()-1){ gallery.setSelection(gallery.getSelectedItemPosition()+1); } } }); adapter = new ArrayAdapter&lt;String&gt;(ctx, android.R.layout.simple_gallery_item, new String[] {"1","1", "1")}); gallery = (Gallery) findViewById(R.id.gallery); gallery.setBackgroundResource(R.drawable.h_sliderl); gallery.setAdapter(adapter); } @Override public void onClick(DialogInterface dialog, int which) { switch(which){ case R.id.toLeft: gallery.setSelection(gallery.getFocusedChild().getId()-1); break; case R.id.toRight: gallery.setSelection(gallery.getFocusedChild().getId()+1); break; } } public void setNewAdapter(ArrayAdapter&lt;String&gt; _adapter){ gallery.setAdapter(_adapter); ((ArrayAdapter) gallery.getAdapter()).notifyDataSetChanged (); } </code></pre> <p>}</p> <p>If I call setNewAdapter(ArrayAdapter _adapter) nothing change.. . I also tried to change the size of the gallery but it also fails(nothig happen). Is my approach false?<br> greetings marcel</p>
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