如果从Google Play下载了应用，则android facebook登录将停止工作 [英] android facebook login stops working if app is downloaded from google play

问题描述

我将功能全面的应用程序上传到Google Play，从那里下载该应用程序后，facebook登录无法正常进行！！我正确配置了我的Facebook应用程序，并且可以在Eclipse环境中使用.搜索后，由于facebook键哈希，可以完成此操作.但是，我得到的像是:

I uploaded my fully working app on Google Play and when download it from there, facebook login doesn't work!! I properly configure my facebook app and works with eclipse environment. After searching, it can be done due to facebook key hashes. However, I obtained it like:

如何为facebook SDK生成密钥哈希Mac

似乎还必须获得用于分发的密钥哈希...但是如何?谢谢.

Seems that a key hash for distribution must be also obtained... but how? Thank you.

推荐答案

替代1:

将此功能与使用您的发布密钥签名的应用 结合使用. 不是是从Eclipse部署的.

Use this with the app signed with your release key. Not the one that is deployed from Eclipse.

在应用程序的第一个活动中运行以下代码:

Run this piece of code in the first Activity of your app:

try {
    PackageInfo info = getPackageManager().getPackageInfo(
            "YOUR_PACKAGE_NAME", PackageManager.GET_SIGNATURES);
    for (Signature signature: info.signatures)  {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        Log.e("FACEBOOK APP SIGNATURE", Base64.encodeToString(md.digest(), Base64.DEFAULT));
    }
} catch (Exception e) {
    // TODO: handle exception
    e.printStackTrace();
}

此行:Log.e("FACEBOOK APP SIGNATURE", Base64.encodeToString(md.digest(), Base64.DEFAULT));将在DDMS中记录密钥哈希.

This line: Log.e("FACEBOOK APP SIGNATURE", Base64.encodeToString(md.digest(), Base64.DEFAULT)); will log the Key Hash in DDMS.

替代2:

1. 下载适用于Windows的OpenSSl ，然后将.zip解压缩到一个简单的位置，例如:c:\ openssl，所有zip内容都提取到该文件夹​​的根目录中.
2. 将您的签名密钥文件复制到JRE安装的bin文件夹中.例如，在我的情况下:C:\Program Files\Java\jre7\bin
3. 在复制签名密钥的bin文件夹中，按 SHIFT +右键单击->在此处打开命令窗口.
4. 运行此命令:keytool -exportcert -alias YOUR_ALIAS -keystore YOUR_SIGNING_KEY> c:\ openssl \ bin \ debug.txt
5. 输入签名密钥的密码
6. 现在，导航至c:\ openssl \ bin文件夹并键入以下命令:

1. Download OpenSSl for Windows and extract the .zip to a simple location like: c:\openssl with all the contents of the zip extracted in this folder's root.
2. Copy your signing key file to your JRE installation's bin folder. For example, in my case: C:\Program Files\Java\jre7\bin
3. While in the bin folder where you copied the signing key, Press SHIFT+ Right Click -> Open command window here.
4. Run this command: keytool -exportcert -alias YOUR_ALIAS -keystore YOUR_SIGNING_KEY > c:\openssl\bin\debug.txt
5. Enter your password for the signing key
6. Now, navigate to the c:\openssl\bin folder and type in the following commands:

openssl sha1 -binary debug.txt > debug_sha.txt

然后

openssl base64 -in debug_sha.txt > debug_base64.txt

完成！ debug_base64.txt 包含您的密钥哈希.将其复制到您的应用程序控制台中，一切就绪.

Done! The debug_base64.txt contains your Key Hash. Copy this in your app console and you are all set.

在我的实验中，这两种方法都为我提供了正确的密钥哈希.但是，在少数情况下(而不是随机的情况)，第一种选择没有提供正确的密钥哈希，而第二种选择始终有效.看看哪个适合您.

In my experiece, both the methods have given me the correct Key Hash. However, in a few cases (rather random ones), the first alternative did not give the correct Key Hash while the second alternative has always worked. See which works for you.

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