显示效果：

java代码

genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){
    public void onCheckedChanged(RadioGroup group,int chackedId){
        if (femalButton.getId() == chackedId){
            System.out.println("female");
            Toast.makeText(Activity9.this,"famle",Toast.LENGTH_SHORT).show();
        }
        else if(maleButton.getId() == chackedId){
            System.out.println("male");
        }
    }
});
这个监听是用来显示男女的，其中男女是单选只能在其中选择一个，不能选择两个
swimBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
    public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){
        if (isChecked){

            System.out.println("swim is checked");
        }
        else {
            System.out.println("swim is unchecked");
        }
    }

});
runBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
    public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){
        if (isChecked){
            System.out.println("run is checked");
        }
        else{
            System.out.println("run is unchecked");
        }
    }

});
readBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
    public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){
        if (isChecked){
            System.out.println("read is checked");
        }
        else{
            System.out.println("read is unchecked");
        }
    }
});
这三个判断是用来判断你选择的哪一个！这三个可以多选，当你选着其中任意一个的时候都会打印出一句话如一下效果

Android studio第四次作业