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POCustom CompoundButton in (Expandable)ListView is not clickable (but a CheckBox is)
 

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  1. POCustom CompoundButton in (Expandable)ListView is not clickable (but a CheckBox is)
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    <p>I have a nearly finished app that uses an ExpandableListView, and a single toggle button per each child row. I can use a CheckBox or a ToggleButton fine, but the underlying CompoundButton does not support horizontal centering of the button graphic (wtf?). So I built my own, but somehow using it instead renders it unclickable in the listview.</p> <p>In a regular layout, the custom compoundbutton works perfectly.</p> <p>Some magic incantation appears missing and I'm not quite sure what that would be. I'll thank you for any insights.</p> <pre class="lang-java prettyprint-override"><code>package net.shangtai.listener; import android.widget.CompoundButton; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.Gravity; class ImageToggle extends CompoundButton { private Drawable buttonDrawable; public ImageToggle(Context context) { super(context, null); } public ImageToggle(Context context, AttributeSet attrs) { super(context, attrs, 0); } public ImageToggle(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override public void setButtonDrawable(Drawable d) { super.setButtonDrawable(d); buttonDrawable=d; } @Override protected void onDraw(Canvas canvas) { if (buttonDrawable != null) { final int gravity = getGravity(); final int height = buttonDrawable.getIntrinsicHeight(); final int width = buttonDrawable.getIntrinsicWidth(); int top=0; int bottom=0; int left=getWidth(); int right=getHeight(); switch (gravity) { case Gravity.TOP: top=0; bottom=height; break; case Gravity.BOTTOM: top=getHeight() - height; bottom=0; break; case Gravity.CENTER_VERTICAL: top=(getHeight() - height)/2; bottom=top+height; break; case Gravity.LEFT: left=0; right=width; break; case Gravity.RIGHT: left=getWidth() - width; right=0; break; case Gravity.CENTER_HORIZONTAL: left=(getWidth() - width)/2; right=left+width; break; case Gravity.CENTER: left=(getWidth() - width)/2; right=left+width; top=(getHeight() - height)/2; bottom=top+height; break; } buttonDrawable.setBounds(left, top, right, bottom); buttonDrawable.draw(canvas); } } } </code></pre>
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