Android简单获取多个复选框的值

<?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"
android:weightSum="1">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1">
<CheckBox
android:id="@+id/checkbox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="篮球" />
<CheckBox
android:id="@+id/checkbox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="足球" />
<CheckBox
android:id="@+id/checkbox3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="乒乓球" />
<CheckBox
android:id="@+id/checkbox4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="羽毛球" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center_horizontal">
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="获取选中的值"/>
</LinearLayout>
</LinearLayout>

package com.example.lolli.myapplication;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

private CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
private Button button1;
private List<CheckBox> checkBoxList = new ArrayList<CheckBox>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

// 初始化控件
checkBox1 = (CheckBox) findViewById(R.id.checkbox1);
checkBox2 = (CheckBox) findViewById(R.id.checkbox2);
checkBox3 = (CheckBox) findViewById(R.id.checkbox3);
checkBox4 = (CheckBox) findViewById(R.id.checkbox4);
button1 = (Button) findViewById(R.id.button1);

// 将所有的checkbox放到一个集合中
checkBoxList.add(checkBox1);
checkBoxList.add(checkBox2);
checkBoxList.add(checkBox3);
checkBoxList.add(checkBox4);

//给按钮设置点击事件
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
StringBuffer sb = new StringBuffer();
//遍历集合中的checkBox,判断是否选择，获取选中的文本
for (CheckBox checkbox : checkBoxList) {
if (checkbox.isChecked()){
sb.append(checkbox.getText().toString() + " ");
}
}
if (sb!=null && "".equals(sb.toString())){
Toast.makeText(getApplicationContext(), "请至少选择一个", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getApplicationContext(), sb.toString(), Toast.LENGTH_SHORT).show();
}

}
});
}
}