Android Radiobutton Image

I have a radiogroup with custom radiobuttons. Icons are set using rbFirst.setButtonDrawable(R.drawable.first); But icon is not in the center, how do I fix it? I tried different at

Solution 1:

Try using setGravity(Gravity.CENTER); of setting it as a background drawable.

Or if it does not help you will have to derive a new class from RadioButton and override onDraw().

Here's layout

<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"
    ><org.test.TestProj.RadioButtonCenterandroid:id="@+id/myview"android:layout_width="fill_parent"android:layout_height="100dp"android:layout_centerInParent="true"android:text="Button test"
    /></RelativeLayout>

The code:

package org.test.TestProj;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.RadioButton;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;

publicclassRadioButtonCenterextendsRadioButton {

    publicRadioButtonCenter(Context context, AttributeSet attrs) {
        super(context, attrs);
        TypedArraya= context.obtainStyledAttributes(attrs, R.styleable.CompoundButton, 0, 0);
        buttonDrawable = a.getDrawable(1);
        setButtonDrawable(android.R.color.transparent);
    }
    Drawable buttonDrawable;


     @OverrideprotectedvoidonDraw(Canvas canvas) {
            super.onDraw(canvas);

            if (buttonDrawable != null) {
                buttonDrawable.setState(getDrawableState());
                finalintverticalGravity= getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
                finalintheight= buttonDrawable.getIntrinsicHeight();

                inty=0;

                switch (verticalGravity) {
                    case Gravity.BOTTOM:
                        y = getHeight() - height;
                        break;
                    case Gravity.CENTER_VERTICAL:
                        y = (getHeight() - height) / 2;
                        break;
                }

            intbuttonWidth= buttonDrawable.getIntrinsicWidth();
            intbuttonLeft= (getWidth() - buttonWidth) / 2;
            buttonDrawable.setBounds(buttonLeft, y, buttonLeft+buttonWidth, y + height);
                buttonDrawable.draw(canvas);
            }
        }   
}

Finally, here's an attrs.xml file you need to put in res/values so the code can get at platform-defined attributes.

<?xml version="1.0" encoding="utf-8"?><resources><declare-styleablename="CompoundButton"><attrname="android:button" /></declare-styleable></resources>