You can customize the location of your Toast by using:
setGravity(int gravity, int xOffset, int yOffset)
docs
This allows you to be very specific about where you want the location of your Toast to be.
One of the most useful things about the xOffset and yOffset parameters is that you can use them to place the Toast relative to a certain View.
For example, if you want to make a custom Toast that appears on top of a Button, you could create a function like this:
// v is the Button view that you want the Toast to appear above
// and messageId is the id of your string resource for the message
private void displayToastAboveButton(View v, int messageId)
{
int xOffset = 0;
int yOffset = 0;
Rect gvr = new Rect();
View parent = (View) v.getParent();
int parentHeight = parent.getHeight();
if (v.getGlobalVisibleRect(gvr))
{
View root = v.getRootView();
int halfWidth = root.getRight() / 2;
int halfHeight = root.getBottom() / 2;
int parentCenterX = ((gvr.right - gvr.left) / 2) + gvr.left;
int parentCenterY = ((gvr.bottom - gvr.top) / 2) + gvr.top;
if (parentCenterY <= halfHeight)
{
yOffset = -(halfHeight - parentCenterY) - parentHeight;
}
else
{
yOffset = (parentCenterY - halfHeight) - parentHeight;
}
if (parentCenterX < halfWidth)
{
xOffset = -(halfWidth - parentCenterX);
}
if (parentCenterX >= halfWidth)
{
xOffset = parentCenterX - halfWidth;
}
}
Toast toast = Toast.makeText(getActivity(), messageId, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, xOffset, yOffset);
toast.show();
}