<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical">
<!-- 定义CheckBox控件 ,代表篮球选项-->
<CheckBox
android:id="@+id/CbBasketball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="篮球" />
<!-- 定义CheckBox控件 ,代表乒乓球选项-->
<CheckBox
android:id="@+id/CbPingpangball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="乒乓球" />
<!-- 定义CheckBox控件 ,代表足球选项-->
<CheckBox
android:id="@+id/CbFootball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="足球" />
<!-- 定义TextView控件,来显示选中结果 -->
<TextView
android:id="@+id/TvResult"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/str" />
</LinearLayout>
package com.example.yanlei.yl2;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
//导入必备的包
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.CompoundButton.OnCheckedChangeListener;
public class MainActivity extends AppCompatActivity {
private CheckBox CbBasketball; //定义篮球的复选框对象
private CheckBox CbPingpangball; //定义乒乓球的复选框对象
private CheckBox CbFootball; //定义足球的复选框对象
private TextView TvResult; //定义结果文本便签对象
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); //调用父类的onCreate方法
//通过setContentView方法设置当前页面的布局文件为activity_main
setContentView(R.layout.activity_main);
findView(); //获取页面中的控件
setListener(); //设置控件的监听器
}
private void setListener() {
// TODO Auto-generated method stub
//设置所有CheckBox的状态改变监听器
CbBasketball.setOnCheckedChangeListener(myCheckChangelistener);
CbPingpangball.setOnCheckedChangeListener(myCheckChangelistener);
CbFootball.setOnCheckedChangeListener(myCheckChangelistener);
}
OnCheckedChangeListener myCheckChangelistener = new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
//设置TextView的内容显示CheckBox的选择结果
setText();
}
};
private void findView() {
// TODO Auto-generated method stub
//通过findViewById得到对应的控件对象
CbBasketball = (CheckBox)findViewById(R.id.CbBasketball);
CbPingpangball = (CheckBox)findViewById(R.id.CbPingpangball);
CbFootball = (CheckBox)findViewById(R.id.CbFootball);
TvResult = (TextView)findViewById(R.id.TvResult);
}
private void setText(){
String str;
TvResult.setText(""); //清空TextView的内容
//如果CbBasketball被选中,则加入TvResult内容显示
if (CbBasketball.isChecked()) {
str = TvResult.getText().toString()+CbBasketball.getText().toString()+",";
TvResult.setText(str);
}
//如果CbPingpangball被选中,则加入TvResult内容显示
if (CbPingpangball.isChecked()) {
str = TvResult.getText().toString()+CbPingpangball.getText().toString()+",";
TvResult.setText(str);
}
//如果CbFootball被选中,则加入TvResult内容显示
if (CbFootball.isChecked()) {
str = TvResult.getText().toString()+CbFootball.getText().toString();
TvResult.setText(str);
}
}
}