RadioGroup、RadioButton、CheckBox、Toast用法

  xml布局文件如下:

  <RadioGroup
    android:id="@+id/sex"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/number2"
    android:orientation="vertical">
    <RadioButton
      android:id="@+id/female"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="女"/>
    <RadioButton
      android:id="@+id/male"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="男"/>
  </RadioGroup>
  <CheckBox
    android:id="@+id/swim"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/sex"
    android:text="游泳"/>
  <CheckBox
    android:id="@+id/football"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/swim"
    android:text="足球"/>

     MainActivity.java的OnCreate方法中相应的代码如下:

    genderGroup = (RadioGroup)findViewById(R.id.sex);
    femaleButton = (RadioButton)findViewById(R.id.female);
    maleButton = (RadioButton)findViewById(R.id.male);
    genderGroup.setOnCheckedChangeListener(new GenderGroupListener());
    swimBox = (CheckBox)findViewById(R.id.swim);
    footBallBox = (CheckBox)findViewById(R.id.football);
    swimBox.setOnCheckedChangeListener(new HobbykBoxListener());
    footBallBox.setOnCheckedChangeListener(new HobbykBoxListener());

  定义genderGroup、CheckBox的监听器,注意二者的监听器的参数不同:

  class GenderGroupListener implements OnCheckedChangeListener{

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
      // TODO Auto-generated method stub
      //group点击的组的对象,checkedId组中的RadioButton对象的ID
      if(femaleButton.getId() == checkedId){
        Toast.makeText(MainActivity.this, "女", Toast.LENGTH_SHORT).show();
      }
      else if(maleButton.getId() == checkedId){
        Toast.makeText(MainActivity.this, "男", Toast.LENGTH_SHORT).show();
      }
    }
  }

  class HobbykBoxListener implements android.widget.CompoundButton.OnCheckedChangeListener{

    @Override
    public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
      // TODO Auto-generated method stub
      //isChecked是否选中,如果选中则传入真,否则传入假
      if(isChecked){
        Toast.makeText(MainActivity.this, buttonView.getText().toString(), Toast.LENGTH_SHORT).show();
      }
    }
  }

posted @ 2015-07-18 23:10  best.lei  阅读(311)  评论(0编辑  收藏  举报