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  • How to implement Drawable Animation in Android.

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    To implement Drawable Animation in Android follow the steps :-

    1) Prepare a series of images with the individual frames of your animation. Add the images to your projects drawable folder.

    2) Declare a XML file that defines the animation sequence that holds the list of drawables. Create a new file named pro_frame.xml and paste it to your project resource res/anim or res/drawable folder.

    pro_frame.xml

    <?xml version="1.0" encoding="utf-8"?>
    <animation-list xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:drawable="@drawable/run1" android:duration="80" />
        <item android:drawable="@drawable/run2" android:duration="80" />
        <item android:drawable="@drawable/run3" android:duration="80" />
        <item android:drawable="@drawable/run4" android:duration="80" />
        <item android:drawable="@drawable/run5" android:duration="80" />
        <item android:drawable="@drawable/run6" android:duration="80" />
        <item android:drawable="@drawable/run7" android:duration="80" />
        <item android:drawable="@drawable/run8" android:duration="80" />
        <item android:drawable="@drawable/run1" android:duration="210" />
        <item android:drawable="@drawable/run2" android:duration="210" />
        <item android:drawable="@drawable/run3" android:duration="210" />
        <item android:drawable="@drawable/run4" android:duration="210" />
        <item android:drawable="@drawable/run5" android:duration="210" />
        <item android:drawable="@drawable/run6" android:duration="210" />
        <item android:drawable="@drawable/run7" android:duration="210" />
        <item android:drawable="@drawable/run8" android:duration="210" />
    </animation-list>
    

    3) Now declare an image view to your activity layout where the animation will be shown. In this example, I have declared an image view and two buttons Start and Stop to control the animation.

    activity_main.xml

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.androinahi ..................d.com/tools" android:layout_width="match_parent"
        android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
    
    
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:adjustViewBounds="true" />
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_marginBottom="20dp"
            android:orientation="horizontal">
    
            <Button
                android:id="@+id/start"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="0.5"
                android:text="Start" />
    
            <Button
                android:id="@+id/stop"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="0.5"
                android:text="Stop" />
        </LinearLayout>
    
    </RelativeLayout>
    

    4) Now that we are ready with the animation sequence, we need to add this Drawable as a background resource for our ImageView in our MainActivity.

    MainActivity.java

    public class MainActivity extends Activity {
        private ImageView mImageView;
        private Button mStartButton,mStopButton;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            mImageView=(ImageView)findViewById(R.id.imageView); // Type casting the Image View
            mStartButton=(Button)findViewById(R.id.start);
            mStopButton=(Button)findViewById(R.id.stop);
            mImageView.setBackgroundResource(R.drawable.pro_frame);// Setting animation_list.xml as the background of the image view
            final AnimationDrawable frameAnimation=(AnimationDrawable) mImageView.getBackground();// Type casting the Animation drawable
            frameAnimation.setOneShot(true);//set true if you want to animate only once
            mStartButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    frameAnimation.start();
                }
            });
            mStopButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    frameAnimation.stop();
                }
            });
        }
    

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