android自定义的RadioButton_android extends radiobutton

<declare-styleable name="RadioButton_draw">
        <attr name="drawableSize" format="dimension" />
        <attr name="drawableTop" format="reference" />
        <attr name="drawableLeft" format="reference" />
        <attr name="drawableRight" format="reference" />
        <attr name="drawableBottom" format="reference" />
    </declare-styleable>

二、自定义的RadioButton

package com.example.customradiobutton;
 
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.RadioButton;
 
 
/*
* 描述：RadioButton  图片大小
* 文件名：RadioButtonDrawSize.java7
*/
public class RadioButtonDrawSize extends RadioButton {
 
    private int mDrawableSize;// xml文件中设置的大小  
 
    public RadioButtonDrawSize(Context context) {
        this(context, null, 0);
    }
 
    public RadioButtonDrawSize(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }
 
    public RadioButtonDrawSize(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        Drawable drawableLeft = null, drawableTop = null, drawableRight = null, drawableBottom = null;
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RadioButton_draw);
 
        int n = a.getIndexCount();
        for (int i = 0; i < n; i++) {
            int attr = a.getIndex(i);
            if (attr == R.styleable.RadioButton_draw_drawableSize) {
                mDrawableSize = a.getDimensionPixelSize(R.styleable.RadioButton_draw_drawableSize, 50);
 
            } else if (attr == R.styleable.RadioButton_draw_drawableTop) {
                drawableTop = a.getDrawable(attr);
 
            } else if (attr == R.styleable.RadioButton_draw_drawableBottom) {
                drawableRight = a.getDrawable(attr);
 
            } else if (attr == R.styleable.RadioButton_draw_drawableRight) {
                drawableBottom = a.getDrawable(attr);
 
            } else if (attr == R.styleable.RadioButton_draw_drawableLeft) {
                drawableLeft = a.getDrawable(attr);
 
            } else {
            }
        }
        a.recycle();
        setCompoundDrawablesWithIntrinsicBounds(drawableLeft, drawableTop, drawableRight, drawableBottom);
    }
 
    /**
     * RadioButton上、下、左、右设置图标
     */
    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top, Drawable right, Drawable bottom) {
        if (left != null) {
            left.setBounds(0, 0, mDrawableSize, mDrawableSize);
        }
        if (right != null) {
            right.setBounds(0, 0, mDrawableSize, mDrawableSize);
        }
        if (top != null) {
            top.setBounds(0, 0, mDrawableSize, mDrawableSize);
        }
        if (bottom != null) {
            bottom.setBounds(0, 0, mDrawableSize, mDrawableSize);
        }
        setCompoundDrawables(left, top, right, bottom);
    }
}  

三、在activity_main.xml使用

<?xml version="1.0" encoding="utf-8"?>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.customradiobutton.MainActivity">
 
    <com.example.customradiobutton.RadioButtonDrawSize
        android:id="@+id/radioButton"
        style="@style/inform_dialog_RadioButtonDrawSize"
        android:layout_margin="10dp"
        android:clickable="true"
        android:checked="true"
        android:text="自定义的button1"
        app:drawableLeft="@drawable/jubao_check"
        app:drawableSize="30dp" />
    <com.example.customradiobutton.RadioButtonDrawSize
        android:id="@+id/radioButton2"
        style="@style/inform_dialog_RadioButtonDrawSize"
        android:layout_margin="10dp"
        android:clickable="true"
        android:text="自定义的button2"
        app:drawableLeft="@drawable/jubao_check"
        app:drawableSize="30dp" />
 
    <com.example.customradiobutton.RadioButtonDrawSize
        android:id="@+id/radioButton3"
        style="@style/inform_dialog_RadioButtonDrawSize"
        android:layout_margin="10dp"
        android:text="自定义的button3"
        android:clickable="true"
        app:drawableLeft="@drawable/jubao_check"
        app:drawableSize="30dp" />
 
</RadioGroup>

项目地址：http://download.csdn.net/download/zhang106209/10040731