在 Android 中建立和管理通知渠道
此示例演示瞭如何在 Android 中建立和管理通知渠道。
步驟 1 - 在 Android Studio 中建立一個新專案,轉到檔案 ⇒ 新建專案,並填寫所有必需的詳細資訊以建立新專案。
步驟 2 - 將以下程式碼新增到 res/layout/activity_main.xml 中。
<? 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" android :padding = "16dp" tools :context = ".MainActivity" > <Button android :id = "@+id/btnCreateNotification" android :layout_width = "0dp" android :layout_height = "wrap_content" android :text = "Create notification" app :layout_constraintBottom_toBottomOf = "parent" app :layout_constraintEnd_toEndOf = "parent" app :layout_constraintStart_toStartOf = "parent" app :layout_constraintTop_toTopOf = "parent" /> </android.support.constraint.ConstraintLayout>
步驟 3 - 將聲音新增到 raw 資料夾中。
步驟 4 - 將以下程式碼新增到 src/MainActivity.java 中。
package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.content.ContentResolver ; import android.content.Context ; import android.graphics.Color ; import android.media.AudioAttributes ; import android.net.Uri ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.os.Bundle ; import android.view.View ; import android.widget.Button ; public class MainActivity extends AppCompatActivity { public static final String NOTIFICATION_CHANNEL_ID = "10001" ; private final static String default_notification_channel_id = "default" ; @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; Button btnCreateNotification = findViewById(R.id. btnCreateNotification ) ; btnCreateNotification.setOnClickListener( new View.OnClickListener() { @Override public void onClick (View v) { Uri sound = Uri. parse (ContentResolver. SCHEME_ANDROID_RESOURCE + "://" + getPackageName() + "/raw/quite_impressed.mp3" ) ; NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(MainActivity. this, default_notification_channel_id ) .setSmallIcon(R.drawable. ic_launcher_foreground ) .setContentTitle( "Test" ) .setSound(sound) .setContentText( "Hello! This is my first push notification" ); NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context. NOTIFICATION_SERVICE ) ; if (android.os.Build.VERSION. SDK_INT >= android.os.Build.VERSION_CODES. O ) { AudioAttributes audioAttributes = new AudioAttributes.Builder() .setContentType(AudioAttributes. CONTENT_TYPE_SONIFICATION ) .setUsage(AudioAttributes. USAGE_ALARM ) .build() ; int importance = NotificationManager. IMPORTANCE_HIGH ; NotificationChannel notificationChannel = new NotificationChannel( NOTIFICATION_CHANNEL_ID , "NOTIFICATION_CHANNEL_NAME" , importance) ; notificationChannel.enableLights( true ) ; notificationChannel.setLightColor(Color. RED ) ; notificationChannel.enableVibration( true ) ; notificationChannel.setVibrationPattern( new long []{ 100 , 200 , 300 , 400 , 500 , 400 , 300 , 200 , 400 }) ; notificationChannel.setSound(sound , audioAttributes) ; mBuilder.setChannelId( NOTIFICATION_CHANNEL_ID ) ; assert mNotificationManager != null; mNotificationManager.createNotificationChannel(notificationChannel) ; } assert mNotificationManager != null; mNotificationManager.notify(( int ) System. currentTimeMillis (), mBuilder.build()) ; } }) ; } }
步驟 5 - 將以下程式碼新增到 androidManifest.xml 中。
<? xml version = "1.0" encoding = "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android" package = "app.tutorialspoint.com.notifyme" > <application 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 = ".MainActivity" > <intent-filter> <action android :name = "android.intent.action.MAIN" /> <category android :name = "android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
讓我們嘗試執行您的應用程式。我假設您已將您的實際 Android 移動裝置連線到您的計算機。要從 Android Studio 執行應用程式,請開啟您的一個專案活動檔案,然後單擊工具欄中的執行 圖示。選擇您的移動裝置作為選項,然後檢查您的移動裝置,它將顯示您的預設螢幕 -
點選 這裡 下載專案程式碼。
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