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POHow to make the drawableLeft of a Android Button keep rotating?
 

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  1. POHow to make the drawableLeft of a Android Button keep rotating?
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    <p>I need to create a button where there is a icon in the left and a text in the right. After pressing the button, I want to see there is an animation of rotating image at the place of the left icon in the button.</p> <h2>I know how to rotate a image with ImageView, but it is not helpful to my current requirement.</h2> <p>I tried to use AnimationDrawable, but it did not work either, there is no animation but only the first png file shown. It is then same whatever I use the background or leftDrawable of the button to run the AnimationDrawable. The code is as below:</p> <pre><code>package com.example.layout; import android.app.Activity; import android.graphics.drawable.AnimationDrawable; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.widget.Button; public class TestLinearlayoutActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } @Override public void onStart() { super.onStart(); Button locationTitleButton = (Button) findViewById(R.id.LocationTitleButton); //locationTitleButton.setBackgroundResource(R.drawable.loading); locationTitleButton.setCompoundDrawablesWithIntrinsicBounds(R.drawable.loading, 0, 0, 0); Drawable[] locationTitleButtonDrawables = locationTitleButton.getCompoundDrawables(); AnimationDrawable animDrawable = (AnimationDrawable) locationTitleButtonDrawables[0]; //AnimationDrawable animDrawable = (AnimationDrawable) locationTitleButton.getBackground(); animDrawable.start(); } } //loading.xml: &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false"&gt; &lt;item android:drawable="@drawable/loc1" android:duration="200" /&gt; &lt;item android:drawable="@drawable/loc2" android:duration="200" /&gt; &lt;item android:drawable="@drawable/loc3" android:duration="200" /&gt; &lt;item android:drawable="@drawable/loc4" android:duration="200" /&gt; &lt;/animation-list&gt; // layout file, main.xml: &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:orientation="horizontal" android:padding="0dp" android:layout_height="wrap_content" android:gravity="fill_horizontal" android:layout_margin="0dp"&gt; &lt;Button android:id="@+id/LocationTitleButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="0dip" android:layout_gravity="center_vertical" android:gravity="center_vertical" android:layout_weight="1" android:ellipsize="end" android:scrollHorizontally="true" android:singleLine="true" android:text="Add location" android:textStyle="bold" /&gt; &lt;Button android:textColor="#FF000000" android:layout_weight="0" android:id="@+id/AddLocationButton" android:text="Search" android:gravity="center_vertical" android:layout_gravity="center_vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="-8dp" /&gt; &lt;/LinearLayout&gt; </code></pre>
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