이미지뷰 두번째 공부.

public class ImageVT2 extends Activity 

implements View.OnTouchListener {

    private ImageView iv;

    

    /*private static final int IMGS[] = {

    R.drawable.ys01, R.drawable.ys02, R.drawable.ys03,

    R.drawable.ys04, R.drawable.ys05, R.drawable.ys06,

    R.drawable.ys07, R.drawable.ys08, R.drawable.ys09,

    R.drawable.ys10, R.drawable.ys11, R.drawable.ys12,

    R.drawable.ys13, R.drawable.ys14, R.drawable.ys15,

    R.drawable.ys16, R.drawable.ys17, R.drawable.ys18,

    R.drawable.ys19, R.drawable.ys20, R.drawable.ys21

    };*/

    private Field fields[] = R.drawable.class.getFields();

    @Override

    public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        iv = (ImageView)findViewById(R.id.ImageView01);       

        iv.setOnTouchListener(this);

    }

    int i = 0;

    float x1, x2, y1, y2;

    @Override

public boolean onTouch(View v, MotionEvent event) {  

   

    if(event.getAction() == MotionEvent.ACTION_DOWN){

    x1 = event.getX();

    y1 = event.getY();

   

    //Log.i("(x1, y1)", "("+x1+", "+y1+")");

}else if(event.getAction() == MotionEvent.ACTION_UP){

x2 = event.getX();

    y2 = event.getY();

   

    //Log.i("(x2, y2)", "("+x2+", "+y2+")");

    float valueX = x1 - x2;

    if(valueX > 0){

    //if(i >= (IMGS.length-1) ) i = -1;

    if(i >= (fields.length-1) ) i = -1;

    i++;

    }else if(valueX < 0){

    //if(i <= 0) i = (IMGS.length);

    if(i <= 0) i = (fields.length);

    i--;

    }  

   

//iv.setImageResource(IMGS[i]);

    try{

    iv.setImageResource(fields[i].getInt(new Object()));

    }catch(Exception e){}

}

   

    return true;

}

}

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