Monday, August 27, 2012
Rotate Image with SeekBar - Programmetically
public class ImageLoadActivity extends Activity implements OnSeekBarChangeListener{
private ImageView i;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout m_linear = new LinearLayout(this);
m_linear.setOrientation(LinearLayout.VERTICAL);
Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.akb48);
Matrix matrix = new Matrix();
matrix.postRotate(0);
SeekBar bar = new SeekBar(this);
bar.setOnSeekBarChangeListener(this);
m_linear.addView(bar);
i = new ImageView(this);
rotateImage(0);
m_linear.addView(i);
setContentView(m_linear);
}
private void rotateImage(int degree)
{
Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.akb48);
Matrix matrix = new Matrix();
matrix.postRotate(degree);
Bitmap rotated = Bitmap.createBitmap(image, 0, 0, image.getWidth(), image.getHeight(), matrix, true);
i.setImageBitmap(rotated);
}
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
rotateImage((int)Math.round(progress*3.6));
}
public void onStartTrackingTouch(SeekBar arg0) {
}
public void onStopTrackingTouch(SeekBar arg0) {
}
}
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Nice,Simple Example
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