switch控件的使用

java中：

 public class MainActivity extends Activity implements OnCheckedChangeListener{

     private Switch aSwitch;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         aSwitch = (Switch)findViewById(R.id.switch1);
         aSwitch.setOnCheckedChangeListener(this);
     }
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         if(isChecked){
             Log.e("", "checked");
         }
         if(!isChecked){
             Log.e("", "not checked");
         }

     }

xml中：

             <Switch
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:id="@+id/switch1"
                 android:checked="true" />

注意记住要再onCreate时.setOnCheckedChangeListener(this)