Android 创建悬停通知栏

Android 在API26之后NotificationCompat.Builder (Context context)被废弃，创建通知需要使用新的构造器NotificationCompat.Builder (Context context, String channelId)

so:

NotificationManager manager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
String CHANNEL_ID = "com.example.test";//自定义的字符串
String CHANNEL_NAME = "TEST";
NotificationChannel notificationChannel = null;
NotificationCompat.Builder builder = null;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.createNotificationChannel(notificationChannel);
}
Intent intent = new Intent(this, HomeActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

builder = new NotificationCompat.Builder(this, CHANNEL_ID).
setContentTitle(getResources().getString(R.string.app_name)).
setContentText(getResources().getString(R.string.notice_001)).
setWhen(System.currentTimeMillis()).
setSmallIcon(R.mipmap.app_icon).
setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.app_icon)).
setContentIntent(pendingIntent).setDefaults(NotificationCompat.FLAG_ONGOING_EVENT)
.setPriority(Notification.PRIORITY_MAX);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {//SDK版本>=21才能设置悬挂式通知栏
builder.setCategory(String.valueOf(Notification.FLAG_ONGOING_EVENT))
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setColor(getResources().getColor(R.color.white));
Intent intent2 = new Intent();
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent2, 0);
builder.setFullScreenIntent(pi, true);
}
Notification notification = builder.build();
manager.notify(1, notification);

最后

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