我正在以编程方式创建单选按钮,它工作正常,
RadioImageButton RadioImageButton = new RadioImageButton(this);
RadioImageButton.setGravity(Gravity.CENTER);
RadioImageButton.setId(buttonId);
RadioImageButton.setTextColor(Color.BLACK);
RadioImageButton.setCompoundDrawablesWithIntrinsicBounds(icon, null,null, null)// use this to set the icon
RadioImageButton.setBackgroundDrawable(drawable);
RadioGroup.LayoutParams radioImageButtonParams = new RadioGroup.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT, 1f);
radioImageButtonParams.setMargins(0, 0, 1, 0);
RadioGroup.addView(RadioImageButton, radioImageButtonParams);
在 RadioImageButton 类中
Drawable image;
public RadioImageButton(Context context) {
super(context);
setButtonDrawable(android.R.color.transparent);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (image != null) {
image.setState(getDrawableState());
final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
final int height = image.getIntrinsicHeight();
int y = 0;
switch (verticalGravity) {
case Gravity.BOTTOM:
y = getHeight() - height;
break;
case Gravity.CENTER_VERTICAL:
y = (getHeight() - height) / 2;
break;
}
int buttonWidth = image.getIntrinsicWidth();
int buttonLeft = (getWidth() - buttonWidth) / 3;
image.setBounds(buttonLeft, y, buttonLeft + buttonWidth, y + height);
image.draw(canvas);
}
}
但是正在显示的图标很大,我需要减小该图标的大小。我试过了,setHeight
但它不起作用。
RadioImageButton.setCompoundDrawablesWithIntrinsicBounds(icon, null,null, null)
this is used to set the icon