ANDROID_MARS学习笔记_S01_005CheckBox

一、

1.checkbox_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <CheckBox 
        android:id="@+id/checkAllId"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:text="全选"/>
    <CheckBox
        android:id="@+id/eatId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#ff0000"
        android:textSize="50dp"
        android:text="吃饭"/>
    <CheckBox
        android:id="@+id/sleepId" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#0000ff"
        android:textSize="50sp"
        android:text="睡觉"/>

</LinearLayout>

2.MainActivity.java

@SuppressLint("NewApi")
public class MainActivity extends ActionBarActivity {

    private TextView textView;
    private Button button;
    int count = 0;
    //CheckBox
    private CheckBox eateBox;
    private CheckBox sleepBox;
    private CheckBox checkAll;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.checkbox_layout);
        
        //checkbox
        eateBox = (CheckBox) findViewById(R.id.eatId);
        sleepBox = (CheckBox) findViewById(R.id.sleepId);
        checkAll = (CheckBox) findViewById(R.id.checkAllId);
        OnBoxChickListener boxListener = new OnBoxChickListener();
//        eateBox.setOnClickListener(boxListener);
//        sleepBox.setOnClickListener(boxListener);
        OnBoxChangeListener changeListener = new OnBoxChangeListener();
        eateBox.setOnCheckedChangeListener(changeListener);
        sleepBox.setOnCheckedChangeListener(changeListener);
        checkAll.setOnCheckedChangeListener(changeListener);
        
//        setContentView(R.layout.dpsp_layout);
//        setContentView(R.layout.activity_main);
        //setContentView(R.layout.first_layout);
        
        /*TextView textView = (TextView) findViewById(R.id.textView);
        textView.setText("Hello View");
        textView.setBackgroundColor(Color.CYAN);
        
        button = (Button) findViewById(R.id.button);
        ButtonListener buttonListener = new ButtonListener();
        button.setOnClickListener(buttonListener);*/

    }

    class OnBoxChickListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            System.out.println(v.getId());
            CheckBox box = (CheckBox) v;
            System.out.println(box.isChecked());
            System.out.println("CheckBox is clicked");
        }
        
    }
    
    class OnBoxChangeListener implements OnCheckedChangeListener {

        @Override
        public void onCheckedChanged(CompoundButton buttonView,
                boolean isChecked) {
            if(R.id.eatId == buttonView.getId()) {
                System.out.println("eatButton");
            } else if(R.id.sleepId == buttonView.getId()) {
                System.out.println("sleepButton");
            } else if(R.id.checkAllId == buttonView.getId()) {
                eateBox.setChecked(isChecked);
                sleepBox.setChecked(isChecked);
            }
            System.out.println(isChecked ? "选中" : "取消");
        }
        
    }