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POLayout params of loaded view are ignored
 

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    <p>I'm trying to write my own custom <code>View</code> and I have problem with <code>LayoutParams</code>. </p> <p>The idea is to extend <code>ViewGroup</code> (<code>LinearLayout</code>)</p> <pre><code>public class MyView extends LinearLayout{ public MyView(Context context, AttributeSet attrs) { super(context, attrs); } public MyView(Context context) { super(context); } public void putContent(){ setOrientation(HORIZONTAL); LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); for (int i = 0; i &lt; 5; i++){ View view = inflater.inflate(R.layout.item, null); TextView tv = (TextView)view.findViewById(R.id.item_text); tv.setText("Item " + i); addView(view); } } } </code></pre> <p>As you can see <code>putContent</code> method inflates an items and adds to my view. Here is an item layout</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="match_parent" android:layout_height="match_parent" android:background="#FFFFFF"&gt; &lt;TextView android:text="TextView" android:id="@+id/item_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#000000"/&gt; &lt;/LinearLayout&gt; </code></pre> <p>And main screen layout</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="match_parent" android:layout_height="match_parent" android:orientation="vertical"&gt; &lt;TextView android:layout_width="match_parent" android:layout_height="wrap_content" android_layout_weight="1" android:text="@string/hello" /&gt; &lt;my.test.MyView android:id="@+id/my_view" android:layout_width="match_parent" android:layout_height="match_parent" android_layout_weight="1" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>And activity code</p> <pre><code>public class Start extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); MyView myView = (MyView)findViewById(R.id.my_view); myView.putContent(); } } </code></pre> <p>Here is screenshot of what i get </p> <p><img src="https://i.stack.imgur.com/EG5Of.png" alt="enter image description here"></p> <p>So problem is: attributes of item's root element is ignored</p> <pre><code>android:layout_width="match_parent" android:layout_height="match_parent" </code></pre> <p>But in result I want to get something like this (I get this result when replace <code>addView(view);</code> with this line)</p> <pre><code>addView(view, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1F)); </code></pre> <p><img src="https://i.stack.imgur.com/3QCQj.png" alt="enter image description here"></p> <p>So question is: how I can achieve this result without hard coded LayoutParams ? Thanks for any help!</p> <p><strong>update</strong></p> <p>I also look at the <code>view</code> variable fields in debug mode - the <code>mLayoutParams</code> is <code>null</code>, and became not null when I add inflated <code>view</code> into parent with <code>addView(view, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1F));</code>. <img src="https://i.stack.imgur.com/vY4nU.png" alt="enter image description here"> </p> <p>But <code>mLayoutParams</code> of child of just-loaded view is not null. Why LayoutParams of only root element in xml layout are ignored when view inflated?</p>
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    1. USKevin Crain
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    1. COI'ts hard to comment on your code without your actual code....
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    2. COIt's not really clear. I'm assuming that above is the xml you're inflating? But what is the `ll` in your code? Or are you adding something to the xml, and if so, what are you adding to it?
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    3. CO`ll` created dynamically in code, i inflate given xml and put it into `ll`
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