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    <p>OK adapting some code I found <a href="https://stackoverflow.com/questions/18754722/detecting-if-rectangles-buttons-overlap-on-x-or-y-axis/18756547?noredirect=1#18756547">here</a>, I have come up with a solution which works perfectly:</p> <pre><code>Float newX = ev.getX() - (b.getMeasuredWidth()/2); Float newY = ev.getY() - (b.getMeasuredHeight()/2); for (TouchButton t:myButtons) { if(!(t.equals(b))) { Rectangle r1 = new Rectangle(t.getX(), t.getY(), (float)t.getMeasuredWidth(), (float)t.getMeasuredHeight()); Rectangle r2 = new Rectangle(newX, b.getY(), (float)b.getMeasuredWidth(), (float) b.getMeasuredHeight()); Rectangle r3 = new Rectangle(b.getX(), newY, (float)b.getMeasuredWidth(), (float) b.getMeasuredHeight()); if(r1.interects(r2)) { MoveX = false; } if(r1.interects(r3)) { MoveY = false; } } } </code></pre> <p>and here is Rectangle.java:</p> <pre><code>public class Rectangle { private Float startX; private Float startY; private Float width; private Float height; private Float endX; private Float endY; public Rectangle(Float _x, Float _y, Float _width, Float _height) { startX = _x; startY = _y; width = _width; height = _height; endX = _width + _x; endY = _height + _y; } public Float getX() { return startX; } public Float getY() { return startY; } public float getWidth() { return width; } public float getHeight() { return height; } public float getEndX() { return endX; } public float getEndY() { return endY; } public boolean interects (Rectangle _r2) { return rectOverlap(this, _r2); } private boolean valueInRange(float value, float min, float max) { return (value &gt;= min) &amp;&amp; (value &lt;= max); } private boolean rectOverlap(Rectangle A, Rectangle B) { boolean xOverlap = valueInRange(A.getX(), B.getX(), B.getEndX()) || valueInRange(B.getX(), A.getX(), A.getEndX()); boolean yOverlap = valueInRange(A.getY(), B.getY(), B.getEndY()) || valueInRange(B.getY(), A.getY(), A.getY() + B.getHeight()); return xOverlap &amp;&amp; yOverlap; } } </code></pre> <p>[old choppy answer here] </p> <p>[for historical purposes]</p> <p>I'm not sure how elegant this is, maybe somebody can come up with something better?</p> <p>Building on Khaled A Khunaifer's answer, I've realized I need to check where the buttons WOULD be placed if the move was to take place, then only perform each move if there would be no collisions after:</p> <pre><code>Boolean MoveX = true; Boolean MoveY = true; Float newX = ev.getX() - (b.getMeasuredWidth()/2); Float newY = ev.getY() - (b.getMeasuredHeight()/2); for (TouchButton t:myButtons) { if(!(t.equals(b))) { if (areOverlapping(t,b.getX(), newY)) { MoveY=false; } if(areOverlapping(t,newX,b.getY())) { MoveX = false; } } } if (MoveX) { b.setX(newX); } if (MoveY) { b.setY(newY); } boolean areOverlapping (TouchButton a, double x, double y) { return (y &gt;= a.getY() &amp;&amp; (y &lt;= (a.getY() + a.getMeasuredHeight())) &amp;&amp; x &gt;= a.getX() &amp;&amp; (x &lt;= (a.getX() + a.getMeasuredWidth()))); } </code></pre> <p>This kind of achieves what I'm looking for but it's a bit choppy and sometimes allows the buttons to overlap. I'll try experimenting with the areTouching but I need to decode the logic first as the way it's written is producing errors.</p>
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