android 单选（RadioGroup ）复选（CheckBox）按钮的应用

第一步，还是创建android项目。

第二步，修改已经生成的res/layout/main.xml

 

"1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
>

        android:id="@+id/checkBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="复选框1" />

        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="复选框2" />

        android:id="@+id/radioGroup"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        "@+id/radion1"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="北京" />
        "@+id/radion2"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="天津" />
        "@+id/radion3"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="上海" />
        "@+id/radion4"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="重庆" />

 

第三步，添加主要代码

 

import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.CompoundButton.OnCheckedChangeListener;


public class checkBox extends Activity implements OnCheckedChangeListener  {
    /** Called when the activity is first created. */


    RadioButton  r1 = null;
    RadioButton  r2 = null;
    RadioButton  r3 = null;
    RadioButton  r4 = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox);
        CheckBox checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
        //获得单选按钮组
        RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup);
        //获得单选按钮
        r1 = (RadioButton )findViewById(R.id.radion1);
        r2 = (RadioButton )findViewById(R.id.radion2);
        r3 = (RadioButton )findViewById(R.id.radion3);
        r4 = (RadioButton )findViewById(R.id.radion4);

        checkBox.setChecked(true);

        r1.setClickable(true);
        //监听多选按钮
        checkBox.setOnCheckedChangeListener(this);
        checkBox1.setOnCheckedChangeListener(this);
        //监听单选按钮
        radioGroup.setOnCheckedChangeListener(mChangeRadio);

    }
//参考

   http://blog.csdn.net/applezhengxd/archive/2010/05/06/5563512.aspx