How To Create a Rotating Wheel Control?

Question

I am trying to implement the Rotatory wheel in android, just like the image displayed below.I came across the tutorial from this link. But i want to impleme

Answer 1

Here is the complete code for this:

import android.animation.ObjectAnimator;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.graphics.Matrix;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import java.util.Random;

public class MainActivity extends Activity{
//  Button rotate;
ImageView i;
ImageView ii;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    i= (ImageView) findViewById(R.id.i);
    i.setImageResource(R.drawable.gg);
    ii= (ImageView) findViewById(R.id.ii);
    ii.setImageResource(R.drawable.gg);

    // i.setBackgroundColor(Color.rgb(255, 255, 255));
}

public void ii(View v)
{

    RotateAnimation rotate =
            //new RotateAnimation(0f,generateRandomNumber(),55f,55f);
            new RotateAnimation(0, generateRandomNumber(), 
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

    rotate.setDuration(1500);
    rotate.setInterpolator(new LinearInterpolator());
    i.startAnimation(rotate);
    i.setRotation(generateRandomNumber());
    RotateAnimation rotate1 =
            //new RotateAnimation(0f,generateRandomNumber(),55f,55f);
            new RotateAnimation(0, 999999999, Animation.RELATIVE_TO_SELF, 
 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    rotate1.setDuration(99999);

    rotate1.setInterpolator(new LinearInterpolator());
    // i= (ImageView) findViewById(R.id.i);
    //     i.setImageResource(R.drawable.g);

    ii.startAnimation(rotate1);

/*i= (ImageView) findViewById(R.id.i);
    i.setImageResource(R.drawable.g);
    ObjectAnimator animator = ObjectAnimator.ofFloat(i,"rotationY", 360f);
    animator.setDuration(1000);
    animator.start();
 */

   /* Matrix matrix = new Matrix();
   i.setScaleType(ImageView.ScaleType.CENTER_INSIDE);   //required
    matrix.postRotate(generateRandomNumber());
  i.setImageMatrix(matrix);
 */




   /* Matrix matrix = new Matrix();
    Bitmap bMap = BitmapFactory.decodeResource(getResources(), 
 R.drawable.g);
   matrix.postRotate(generateRandomNumber());

    Bitmap bMapRotate = Bitmap.createBitmap(bMap, 0, 
 0,bMap.getWidth(),bMap.getHeight(), matrix, true);
    i.setImageBitmap(bMapRotate);*/
}


public float generateRandomNumber() {

    Random rand = new Random();
    int randomNum = rand.nextInt((10000000 - 125000) + 1);

    return (float)randomNum;
}



int backpressed=0;
@Override
public void onBackPressed() {
    backpressed++;
    if(backpressed>1)
    {
        super.onBackPressed();
        finish();
    }
    else
    {
        Toast.makeText(this, "Press back again to exit", 
  Toast.LENGTH_LONG).show();
        new Thread(new Runnable() {
            @Override
            public void run() {
                try{
                    Thread.sleep(2000);}
                catch (Exception e)
                {
                    e.printStackTrace();
                }
                backpressed=0;
            }
        });
    }
}
}

Here is the XML:

tools:context=".MainActivity">