安卓入门4：CheckBox

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <CheckBox
        android:id="@+id/checkBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="篮球" />
</LinearLayout>

public class MainActivity extends AppCompatActivity {
    private CheckBox checkBox;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        checkBox = findViewById(R.id.checkBox);
        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                //通过onCheckedChanged来监听当前的checkBox是否被选中
                switch (buttonView.getId()) {
                    case R.id.checkBox:
                        if (isChecked) {
                            Log.i("tag", checkBox.getText().toString() + "被选中");
                        }
                        break;
                    default:
                }
            }
        });
    }
}