如何获取设备令牌 [英] How to get the device token

问题描述

安装完成后，我需要获取deviceToken用于其他目的.这是我到目前为止开发的:

After the installation has been made I need to get the deviceToken for other purposes. This is what I developed so far:

Parse.initialize(this, "qqd423WEfwWEF32FewferT434fs323rfRT", "g7Rre4g7gsGRwgGw458Hdf443gFHk534Mrtg34");
    final ParseInstallation currentInstallation = ParseInstallation.getCurrentInstallation();

    currentInstallation.saveInBackground(new SaveCallback() {
        public void done(ParseException e) {
            if (e == null) {
                System.out.println("ok");
                deviceToken = currentInstallation.get("deviceToken").toString();
                System.out.println(deviceToken);
            } else {
                System.out.println("not ok");
            }
        }
    });

问题是，如果我执行代码，应用程序将崩溃，这是生成的错误:

The problem is that if I execute the code the app crashes and this is the error generated:

02-02 09:44:17.151    ﹕ FATAL EXCEPTION: main, PID: 5855 java.lang.NullPointerException

生成此代码的这段代码是

and the piece of code that generates this is this piece:

deviceToken = currentInstallation.get("deviceToken").toString();

有人可以帮助我吗?安装完成后，我只需要获取deviceToken.

is there anybody who can help me? I simply need to get the deviceToken after the installation is made.

推荐答案

可能会迟到，但也可能会有所帮助:)

Might be Late but also might be helpfull :)

Parse有时会延迟到何时调用done()方法，我在应用程序运行3分钟并退出后便看到了它的调用.

Parse sometimes has some delays to when the done() method is called, I've seen it being called after I played around with the application for 3 minutes and exit it.

我对方法调用使用了不同的顺序:

I used a different order for the method calls:

Parse.initialize(this, "*******", "*******");

    ParsePush.subscribeInBackground("", new SaveCallback()
    {
        @Override
        public void done(ParseException e)
        {
            if (null == e)
            {
                ParseInstallation install = ParseInstallation.getCurrentInstallation();
                String token = install.getString("deviceToken");
                if (token != null)
                {
                    //saved it locally and other stuff
                }
                else
                 {
                   //saved a temporary default value locally
                 }
            }
        }
    });
    ParseInstallation.getCurrentInstallation().saveInBackground();

希望这会有所帮助.

这篇关于如何获取设备令牌的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！