一、前言：很多app都有开关这个功能，开关控件的使用跟checkbox好像也差不多。

二、上代码

创建一个activity:SwitchDefaultActivity

public class SwitchDefaultActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {

    private Switch sw_status;
    private TextView tv_result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_switch_default);
        sw_status = findViewById(R.id.sw_status);
        tv_result = findViewById(R.id.tv_result);
        sw_status.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
        String desc = String.format("Swith按钮的状态是%s",b ? "开":"关");
        tv_result.setText(desc);
    }
}

对应的xml

<?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"
    android:orientation="vertical"
    android:padding="5dp"
    tools:context=".switchpg.SwitchDefaultActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="Switch开关"
            android:layout_weight="1"
            android:layout_gravity="start"
            android:padding="5dp"/>
        <Switch
            android:id="@+id/sw_status"
            android:layout_width="80dp"
            android:layout_height="30dp"
            android:layout_gravity="end"/>
    </LinearLayout>
    <TextView
        android:id="@+id/tv_result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="start"
        android:layout_marginTop="10dp"/>


</LinearLayout>

 三、效果展示