通知
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentTitle("标题");
builder.setContentText("内容");
builder.setWhen(System.currentTimeMillis());
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
builder.setLargeIcon(bitmap);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setAutoCancel(true);
Intent intent = new Intent(this, SkipActivity.class);
PendingIntent activity = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(activity);
manager.notify(1,builder.build());