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    <p>what do you want do achiev? this is what you actually doing:</p> <pre><code>setContentView(R.layout.game_board); </code></pre> <p>->game_board is inflatet with both childs layoutTopicGrade and layoutGames</p> <pre><code>topicGrade = (LinearLayout)findViewById(R.id.layoutTopicGrade); </code></pre> <p>->this is a instance of layoutTopicGrade</p> <pre><code>scroll = new ScrollView(this); </code></pre> <p>->you create a scroll view</p> <pre><code>scroll.addView(topicGrade); </code></pre> <p>->you add topicGrade to the scroll view</p> <p><strong>This failed, because topicGrade already has a parent (layoutFilterContent)</strong> </p> <pre><code>this.setContentView(scroll); </code></pre> <p>->you set the croll view as content.<br> (why did you set R.layout.game_board as content before?)</p> <p>if you only want topicGrade in a <code>ScrollView</code> as <code>ContentView</code>, why didn't you create a xml with this structure?</p> <p>if it is recommended to do it like you do, the solution is: </p> <pre><code>topicGrade = (LinearLayout)findViewById(R.id.layoutTopicGrade); ((LinearLayout)topicGrade.getParent()).removeView(topicGrade) </code></pre> <p>but i can't see why you should do it in this way ^^</p> <p>--edit: now i've got it, here is the you need:</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="horizontal" android:weightSum="4" &gt; &lt;ScrollView android:id="@+id/scrollView1" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"&gt; &lt;LinearLayout android:id="@+id/vertical_container" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" &gt; &lt;/LinearLayout&gt; &lt;/ScrollView&gt; &lt;HorizontalScrollView android:id="@+id/horizontalScrollView1" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="3"&gt; &lt;LinearLayout android:id="@+id/horizontal_container" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" &gt; &lt;/LinearLayout&gt; &lt;/HorizontalScrollView&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. COThank you for your response. line `this.setContentView(scroll);` was added by mistake, I've removed this line. I want to divide the `activity` in 2 parts `(Say if 4 is total, then 1/4 and 3/4)` as I've mentioned in my question and you can see the Layout in the image I provided. How can I divide the layout to `1/4` with `Vertical Scroll` and `3/4` with `Horizontal Scroll`?
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