android自定义的RadioButton

自定义的RadioButton：可以调节选中框与字体的距离，可以设置选中框的位置

效果如下：

一.在strings.xml里加入下列代码

<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