Android RadioGroup/RadioButton

RadioGroup

     RadioButton的集合，提供多选一的机制

     属性：

  android:orientation="horizontal/vertical"

          vertical     垂直排布

          horizontal     水平排布          决定当前RadioGroup中RadioButton以什么形式排列

 

private RadioGroup rg ;

        @Override

        protected void onCreate(Bundle savedInstanceState) {

               super.onCreate(savedInstanceState);

               rg=(RadioGroup) findViewById(R.id. radioGroup1);

               //实现RadioGroup的监听事件

               rg.setOnCheckedChangeListener( new OnCheckedChangeListener() {

                      @Override

                      public void onCheckedChanged(RadioGroup group, int checkedId) {

                            // TODO Auto-generated method stub

                            switch (checkedId) {

                            case R.id.radio :

                                  System. out.println();

                                   break;

                            case R.id.radio0 :

                                  System. out.println();

                                   break;

                            case R.id.radio1 :

                                  System. out.println();

                                   break;

                            default:

                                   break;

                            }

                     }

              });

       }

 

 

 <RadioGroup

        android:id="@+id/radioGroup1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal"

         >

 

        <RadioButton

            android:id="@+id/radio0"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:checked="true"

            android:text="0" />

 

        <RadioButton

            android:id="@+id/radio1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="1" />

    </RadioGroup >