我有一个单选按钮,需要放置在单选组的中心。
这是我的代码:
RadioImageButton RadioImageButton = new RadioImageButton(activity);
RadioImageButton.setGravity(Gravity.CENTER);
RadioImageButton.setId(buttonId);
RadioImageButton.setTextColor(Color.BLACK);
RadioImageButton.setButtonDrawable(icon); // this is where i am replacing the default circle with an image
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);
}
}
目前它是这样的:
radiobutton ------ text
文本只放在中心,但不是单选按钮我希望文本和单选按钮都放在中心。