demo例子

1. 布局xml文件

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <CheckBox
        android:id="@+id/apple"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="apple"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

    <CheckBox
        android:id="@+id/banana"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="banana"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

    <CheckBox
        android:id="@+id/grape"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="grape"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

    <CheckBox
        android:id="@+id/orange"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="orange"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

    <CheckBox
        android:id="@+id/peach"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="peach"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="SHOW TOAST"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="20dp"
        />

</LinearLayout>

2. Actiivity

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public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {

    List<String> list = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //获取控件
        CheckBox apple = findViewById(R.id.apple);
        CheckBox banana = findViewById(R.id.banana);
        CheckBox grape = findViewById(R.id.grape);
        CheckBox orange = findViewById(R.id.orange);
        CheckBox peach = findViewById(R.id.peach);

        //设置监听者
        apple.setOnCheckedChangeListener(this);
        banana.setOnCheckedChangeListener(this);
        grape.setOnCheckedChangeListener(this);
        orange.setOnCheckedChangeListener(this);
        peach.setOnCheckedChangeListener(this);

        //按钮
        findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String text = " ";
                for (String s : list) {
                    text = text + s + " ";
                }

                Toast.makeText(MainActivity.this,text,Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        //是否被选中
        if (isChecked){
            list.add(buttonView.getText().toString());
        }else{
            list.remove(buttonView.getText().toString());
        }
    }
}

3. 运行结果