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POsetContentView() not working
 

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    <p>Here's my code:</p> <pre> <code> public class MyActivity extends Activity implements View.OnClickListener { private Button mHorizontalButton; private Button mVerticalButton; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mHorizontalButton = (Button) findViewById(R.id.horizontal_button); mVerticalButton = (Button) findViewById(R.id.vertical_button); mHorizontalButton.setOnClickListener(this); mVerticalButton.setOnClickListener(this); } public void onClick(View v) { switch (v.getId()) { case R.id.horizontal_button: setContentView(R.layout.horizontal); break; case R.id.vertical_button: setContentView(R.layout.main); break; } } } </code> </pre> <p><strong>main.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="This layout is vertical." /&gt; &lt;Button android:text="Click for a horizontal layout" android:id="@+id/horizontal_button" android:layout_width="wrap_content" android:layout_height="wrap_content" /&gt; &lt;/LinearLayout&gt; </code></pre> <p><strong>horizontal.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent"&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="This layout is horizontal." /&gt; &lt;Button android:text="Click for a vertical layout" android:id="@+id/vertical_button" android:layout_width="wrap_content" android:layout_height="wrap_content" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>It is supposed, that by clicking on button I'll get the horizontal view, and then after clicking once again - vertical. </p> <p>But after clicking nothing happens. What might be the issue?</p>
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    1. COHow are you doing now? Why not follow my answer?
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    2. COIt seemed to me too complicated. Then I noticed someone left negative feedback (-1), though it was not efficient, sorry.
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    3. COOk, I just want to point that: if you just call `setContentView()` to show different layout, then every time when you show a new view, you have to bind the listener again.You have to call `button.setOnclickListener(this);` again after set a new view. The most effecient way to bind the listener is to set the `onClick` attribute in the layout file. Also, I tested, you can use `v==button` to determine which button is clicked.
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