I have a TableLayout with cells of ImageView
s. What I am trying to do is create a zooming effect by incrementing the size of the ImageView
s in the tabel. This works perfectly for zooming out( the picture resizes with the ImageView
) but, the problem is with zooming in. The picture does not resize when the ImageView
is made bigger.
Here is an example:
I want the image to be the same size as the ImageView(each black square is an ImageView)
Here is my code for the zooming ( any tips on better implementation would be appreciated, don't want to use pinch zoom ).
zoomIndex ranges from -2, 2. (only allow them to zoom twice in each direction)
zoomInThreshold = 2, zoomOutThreshold = -2.
defaultSize = 50, zoomIncrement = 15;
if(zoomIndex < zoomInThreshold)
defaultSize += zoomIncrement;
for(int i = 0; i < table.getChildCount(); ++i)
{
TableRow row = (TableRow)table.getChildAt(i);
for(int r = 0; r < row.getChildCount(); ++r)
{
ImageView img = (ImageView)row.getChildAt(r);
if(zoomIndex < zoomInThreshold)
{
TableRow.LayoutParams imgLayoutParams = new TableRow.LayoutParams(
defaultSize,
defaultSize
);
img.setLayoutParams(imgLayoutParams);
if(img.getDrawable() != null)
{
img.setAdjustViewBounds(true);
img.setMaxHeight(defaultSize);
img.setMaxWidth(defaultSize);
img.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
}
}
}
}
if(zoomIndex < zoomInThreshold)
zoomIndex++;
Figured out the problem, this problem only happens when I load my drawings from the xml files. All I had to do was add this line when loading the drawing
img.setAdjustViewBounds(true);
This is how it fits in:
if(drawableID != -1)
{
Bitmap pic = BitmapFactory.decodeResource(getResources(), drawableID);
Bitmap resizedBitmap = Bitmap.createScaledBitmap(pic, 50, 50, true);
im.setImageBitmap(resizedBitmap);
ic.setImage(im);
im.setTag(ic);
im.setAdjustViewBounds(true);
//rotate the icon
im.setScaleType(ImageView.ScaleType.MATRIX);
Matrix matrix = new Matrix();
matrix.set(im.getImageMatrix());
matrix.postRotate(rotAngle, pic.getWidth() / 2, pic.getHeight() / 2);
im.setImageMatrix(matrix);
im.setOnLongClickListener(longListen);//only set this listener if there is something there
}
I only had img.setAdjustViewBounds(true);
in my zoom buttons press.