Android 切換按鈕示例

Android 切換按鈕 可用于在按鈕上顯示選中/未選中（開/關）狀態。愛掏網 - it200.com

如果用戶需要在兩種狀態之間更改設置，則這非常有益。愛掏網 - it200.com 它可用于開/關聲音、Wifi、藍牙等。愛掏網 - it200.com

自從 Android 4.0，還有另一種稱為“切換”的切換按鈕類型，它提供滑塊控制。愛掏網 - it200.com

Android ToggleButton 和 Switch 都是 CompoundButton 類的子類。愛掏網 - it200.com

ToggleButton 類提供了創建切換按鈕的功能。愛掏網 - it200.com

ToggleButton 類的 XML 屬性

ToggleButton 類的 3 個 XML 屬性。愛掏網 - it200.com

ToggleButton類的方法

ToggleButton類常用的方法如下：

Android ToggleButton示例

activity_main.xml

在布局中拖動兩個toggle按鈕和一個按鈕。愛掏網 - it200.com現在activity_main.xml文件的內容如下：

<?xml version="1.0" encoding="utf-8"?>  
<android.support.constraint.ConstraintLayout 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="example.javatpoint.com.togglebutton.MainActivity">  

    <ToggleButton  
        android:id="@+id/toggleButton"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginLeft="8dp"  
        android:layout_marginTop="80dp"  
        android:text="ToggleButton"  
        android:textOff="Off"  
        android:textOn="On"  
        app:layout_constraintEnd_toStartOf="@+id/toggleButton2"  
        app:layout_constraintStart_toStartOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  

    <ToggleButton  
        android:id="@+id/toggleButton2"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginRight="60dp"  
        android:layout_marginTop="80dp"  
        android:text="ToggleButton"  
        android:textOff="Off"  
        android:textOn="On"  
        app:layout_constraintEnd_toEndOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  

    <Button  
        android:id="@+id/button"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="144dp"  
        android:layout_marginLeft="148dp"  
        android:text="Submit"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintStart_toStartOf="parent" />  
</android.support.constraint.ConstraintLayout>  

Activity類

讓我們編寫代碼來檢查哪個切換按鈕是開/關狀態。愛掏網 - it200.com

package example.javatpoint.com.togglebutton;

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

public class MainActivity extends AppCompatActivity {
    private ToggleButton toggleButton1, toggleButton2;
    private Button buttonSubmit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        addListenerOnButtonClick();
    }

    public void addListenerOnButtonClick(){
        //Getting the ToggleButton and Button instance from the layout xml file
        toggleButton1=(ToggleButton)findViewById(R.id.toggleButton);
        toggleButton2=(ToggleButton)findViewById(R.id.toggleButton2);
        buttonSubmit=(Button)findViewById(R.id.button);

        //Performing action on button click
        buttonSubmit.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View view) {
                StringBuilder result = new StringBuilder();
                result.append("ToggleButton1 : ").append(toggleButton1.getText());
                result.append("\nToggleButton2 : ").append(toggleButton2.getText());
                //Displaying the message in toast
                Toast.makeText(getApplicationContext(), result.toString(),Toast.LENGTH_LONG).show();
            }

        });

    }
}

輸出: