我正在尝试在 Java 中实现新的“命令 2”推送通知,并且不能让它推送多个警报。第一个警报已成功推送。如果您能在此代码上发现任何问题,请提供帮助
for (DeviceApps deviceApps : deviceAppsList) {
outputStream.write(getByteArray(deviceApps, pushAlert));
}
private byte[] getByteArray(DeviceApps deviceApps, PushAlert pushAlert) {
ByteArrayOutputStream dataBao = new ByteArrayOutputStream();
// Write the TokenLength as a 16bits unsigned int, in big endian
dataBao.write((byte)1);
dataBao.write(intTo2ByteArray(32));
dataBao.write(deviceTokenAsBytes);
// Write the PayloadLength as a 16bits unsigned int, in big endian
dataBao.write((byte)2);
dataBao.write(intTo2ByteArray(payLoadAsBytes.length));
dataBao.write(payLoadAsBytes);
// 4 bytes. Notification identifier
dataBao.write((byte)3);
dataBao.write(intTo2ByteArray(4));
dataBao.write(intTo4ByteArray(random.nextInt()));
// 4 bytes Expiration date
dataBao.write((byte)4);
dataBao.write(intTo2ByteArray(4));
dataBao.write(intTo4ByteArray(pushAlert.getUtcExpireTime()));
LOG.error("UtcExpireTime="+ pushAlert.getUtcExpireTime());
// 1 bytes Priority
dataBao.write((byte)5);
dataBao.write(intTo2ByteArray(1));
dataBao.write((byte)10);
//Frame Info
bao = new ByteArrayOutputStream();
bao.write((byte)2);
byte [] data = dataBao.toByteArray();
bao.write(intTo4ByteArray(data.length));
LOG.error(" data.length "+data.length);
bao.write(data);
return bao.toByteArray();
}
Support Methods
private static final byte[] intTo4ByteArray(int value) {
return ByteBuffer.allocate(4).putInt(value).array();
}
private static final byte[] intTo2ByteArray(int value) {
int s1 = (value & 0xFF00) >> 8;
int s2 = value & 0xFF;
return new byte[] { (byte) s1, (byte) s2 };
}