android 重写RadioButton

来源：互联网发布：帝王三国作弊软件编辑：程序博客网时间：2024/06/05 08:52

转载是一种美德 http://hi.baidu.com/545057627/blog/item/bd154f0bfef4e5181c9583d6.html

package com.cloud.test;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.RadioButton;

public class MyRadioButton extends RadioButton{

public MyRadioButton(Context context) {
super(context);
}

public MyRadioButton(Context context,AttributeSet attrs) {
super(context,attrs);
}

@Override
public boolean isChecked() {
return super.isChecked();
}

@Override
public void setButtonDrawable(int resid) {
super.setButtonDrawable(resid);
}

@Override
protected void onDraw(Canvas canvas) {
if(isChecked()){
super.setButtonDrawable(R.drawable.circle_green); //为选中RadioButton的图片
}else{
super.setButtonDrawable(R.drawable.circle_grey); //未选中RadioButton的图片
}
super.onDraw(canvas);
}

}

package com.cloud.test;

import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.RadioGroup;

public class RadioButtonTestActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        LinearLayout layout=(LinearLayout)findViewById(R.id.layout);
        RadioGroup rg=new RadioGroup(this);
        MyRadioButton mBtn=new MyRadioButton(getApplicationContext());
        mBtn.setWidth(100);
        mBtn.setText("RadioBtnOne");
        mBtn.setHeight(60);

        MyRadioButton mBtn2=new MyRadioButton(getApplicationContext());
        mBtn2.setWidth(100);
        mBtn2.setText("RadioBtnTwo");

mBtn2.setHeight(60);

        rg.addView(mBtn);
        rg.addView(mBtn2);
        layout.addView(rg);

    }
}