widget

widget basic code

 

1. manifest에 receiver 코드를 작성합니다.

manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapplication">

    <uses-permission android:name="android.permission.VIBRATE"/>

    <application
        android:name=".App"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainBctivity"
            android:theme="@style/AppTheme.Custom"/>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver android:name="ExampleAppWidgetProvider" >
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data android:name="android.appwidget.provider"
                android:resource="@xml/example_appwidget_info" />
        </receiver>

    </application>

</manifest>

 

2. res -> xml에 example_appwidget_info.xml 파일을 만들고 코드를 작성합니다.

example_appwidget_info.xml

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="40dp"
    android:minHeight="40dp"
    android:updatePeriodMillis="86400000"
    android:previewImage="@drawable/ic_launcher_foreground"
    android:initialLayout="@layout/example_appwidget"
    android:resizeMode="horizontal|vertical"
    android:widgetCategory="home_screen">
</appwidget-provider>

여기에서 previewImage에 위젯 미리 보기 이미지를 정합니다.

 

 

3. ExampleAppWidgetProvider 클래스를 만들고 코드를 작성합니다.

ExampleAppWidgetProvider.kt

class ExampleAppWidgetProvider : AppWidgetProvider() {

    override fun onUpdate(
        context: Context,
        appWidgetManager: AppWidgetManager,
        appWidgetIds: IntArray
    ) {
        // Perform this loop procedure for each App Widget that belongs to this provider
        appWidgetIds.forEach { appWidgetId ->
            // Create an Intent to launch ExampleActivity
            val pendingIntent: PendingIntent = Intent(context, MainActivity::class.java)
                .let { intent ->
                    PendingIntent.getActivity(context, 0, intent, 0)
                }

            // Get the layout for the App Widget and attach an on-click listener
            // to the button
            val views: RemoteViews = RemoteViews(
                context.packageName,
                R.layout.example_appwidget
            ).apply {
                setOnClickPendingIntent(R.id.btn, pendingIntent)
            }

            // Tell the AppWidgetManager to perform an update on the current app widget
            appWidgetManager.updateAppWidget(appWidgetId, views)
        }

    }
}

pendingIntent가 MainActivity로 이동하도록 하고

 

 

RemoteViews에 두 번째 변수에 R.layout.example_appwidget으로 위젯 레이아웃을 작성합니다.

example_appwidget.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="위젯"
        android:textSize="16sp"/>

</FrameLayout>

 

 

4. 그리고 마지막으로 MainActivity 코드를 작성합니다.

MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    }

    override fun onResume() {
        super.onResume()

        val appWidgetManager: AppWidgetManager? = getSystemService(AppWidgetManager::class.java)
        val myProvider = ComponentName(this, ExampleAppWidgetProvider::class.java)

        val successCallback: PendingIntent? = if (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                appWidgetManager!!.isRequestPinAppWidgetSupported
            } else {
                TODO("VERSION.SDK_INT < O")
            }
        ) {
            Intent(this, MainActivity::class.java).let { intent ->
                PendingIntent.getBroadcast(applicationContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
            }
        } else {
            null
        }

        btn.setOnClickListener {
            successCallback?.also { pendingIntent ->
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                    appWidgetManager.requestPinAppWidget(myProvider, null, pendingIntent)
                }
            }
        }

    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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=".MainActivity">

    <Button
        android:id="@+id/btn"
        android:layout_width="160dp"
        android:layout_height="80dp"
        android:text="@string/btn"
        android:textSize="25sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        />

</androidx.constraintlayout.widget.ConstraintLayout>

 

 

출처 : https://niqrid2020.pe.kr/?cat=3