android.widget.Switch-이벤트 리스너를 켜거나 끕니다?

android.widget.Switch-이벤트 리스너를 켜거나 끕니다?

---

스위치 버튼 android.widget.Switch (API v.14에서 사용 가능)를 구현하고 싶습니다.

<Switch
    android:id="@+id/switch1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Switch" />

그러나 버튼에 이벤트 리스너를 추가하는 방법을 잘 모르겠습니다. "onClick"리스너 여야합니까? "켜짐"으로 설정되어 있는지 아닌지 어떻게 알 수 있습니까?

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스위치는 CompoundButton의 속성을 상속 하므로 OnCheckedChangeListener를 권장합니다.

mySwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        // do something, the isChecked will be
        // true if the switch is in the On position
    }
});

---

다음 스 니펫을 사용하여 XML을 통해 레이아웃에 스위치를 추가하십시오.

<Switch
     android:id="@+id/on_off_switch"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:textOff="OFF"
     android:textOn="ON"/>

그런 다음 Activity의 onCreate 메소드에서 Switch에 대한 참조를 가져 와서 OnCheckedChangeListener를 설정하십시오.

Switch onOffSwitch = (Switch)  findViewById(R.id.on_off_switch); 
onOffSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    Log.v("Switch State=", ""+isChecked);
}       

});

---

XML 레이아웃을 정의하십시오.

<RelativeLayout 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"
    tools:context="com.neoecosystem.samplex.SwitchActivity">

    <Switch
        android:id="@+id/myswitch"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content" />

</RelativeLayout> 

그런 다음 활동을 작성하십시오.

public class SwitchActivity extends ActionBarActivity implements CompoundButton.OnCheckedChangeListener {

    Switch mySwitch = null;


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


        mySwitch = (Switch) findViewById(R.id.myswitch);
        mySwitch.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // do something when check is selected
        } else {
            //do something when unchecked
        }
    }

    ****
}

======== API 14 이하 에서는 SwitchCompat =========

XML

<RelativeLayout 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"
    tools:context="com.neoecosystem.samplex.SwitchActivity">

    <android.support.v7.widget.SwitchCompat
        android:id="@+id/myswitch"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content" />

</RelativeLayout>

활동

public class SwitchActivity extends ActionBarActivity implements CompoundButton.OnCheckedChangeListener {

    SwitchCompat mySwitch = null;


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


        mySwitch = (SwitchCompat) findViewById(R.id.myswitch);
        mySwitch.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // do something when checked is selected
        } else {
            //do something when unchecked
        }
    }
   *****
}

---

For those using Kotlin, you can set a listener for a switch (in this case having the ID mySwitch) as follows:

    mySwitch.setOnCheckedChangeListener { _, isChecked ->
         // do whatever you need to do when the switch is toggled here
    }

isChecked is true if the switch is currently checked (ON), and false otherwise.

---

The layout for Switch widget is something like this.

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <Switch
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="20dp"
        android:gravity="right"
        android:text="All"
        android:textStyle="bold"
        android:textColor="@color/black"
        android:textSize="20dp"
        android:id="@+id/list_toggle" />
</LinearLayout>

In the Activity class, you can code by two ways. Depends on the use you can code.

First Way

public class ActivityClass extends Activity implements CompoundButton.OnCheckedChangeListener {
Switch list_toggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.return_vehicle);

    list_toggle=(Switch)findViewById(R.id.list_toggle);
    list_toggle.setOnCheckedChangeListener(this);
    }
}

public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
    if(isChecked) {
        list_toggle.setText("Only Today's");  //To change the text near to switch
        Log.d("You are :", "Checked");
    }
    else {
        list_toggle.setText("All List");   //To change the text near to switch
        Log.d("You are :", " Not Checked");
    }
}

Second way

public class ActivityClass extends Activity {
Switch list_toggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.return_vehicle);

    list_toggle=(Switch)findViewById(R.id.list_toggle);
    list_toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
       @Override
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
          if(isChecked) {
             list_toggle.setText("Only Today's");  //To change the text near to switch
             Log.d("You are :", "Checked");
          }
          else {
             list_toggle.setText("All List");  //To change the text near to switch
             Log.d("You are :", " Not Checked");
          }
       }       
     });
   }
}

참고URL : https://stackoverflow.com/questions/11278507/android-widget-switch-on-off-event-listener