要生成释放密钥的散列，请在Mac或Windows上运行以下命令，替换释放密钥别名和密钥存储库的路径。

在Windows上，使用:

keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64

这个命令应该生成一个28个字符的字符串。记住，复制并粘贴这个释放键哈希到你的Facebook应用ID的Android设置。

图片:fbcdn-dragon-a.akamaihd.net/hphotos-ak-xpa1/t39.2178-6/851568_627654437290708_1803108402_n.png

参考网址:https://developers.facebook.com/docs/android/getting-started#release-key-hash和http://note.taable.com

以下是步骤

Download openssl from Google code (If you have a 64 bit machine you must download openssl-0.9.8e X64 not the latest version) Extract it. create a folder- OpenSSL in C:/ and copy the extracted code here. detect debug.keystore file path. If u didn't find, then do a search in C:/ and use the Path in the command in next step. detect your keytool.exe path and go to that dir/ in command prompt and run this command in 1 line- $ keytool -exportcert -alias androiddebugkey -keystore "C:\Documents and Settings\Administrator.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -binary |"C:\OpenSSL\bin\openssl" base64 it will ask for password, put android that's all. u will get a key-hash

欲了解更多信息，请访问这里

你需要通过keytool为android签名应用程序创建一个密钥库，就像android站点中描述的过程一样，然后你必须安装cygwin，然后你需要从谷歌代码安装openssl，然后只需执行以下命令，你就会得到android的哈希密钥，然后把哈希密钥放入你创建的facebook应用程序。然后你可以通过Android应用程序访问facebook应用程序的张贴墙(“publish_stream”)可以是一个例子。

$ keytool -exportcert -alias alias_name -keystore sample_keystore。Keystore | openssl sha1 -binary | openssl base64 . Keystore | openssl sha1 -binary

您需要从cygwin执行上面的命令。

[EDIT 2020]->现在我完全推荐这里的答案，使用android studio更容易，更快，不需要写任何代码-下面这个是在eclipse时代的:)-。

您可以在任何活动中使用此代码。它将在logcat中记录hashkey，这是调试键。这很简单，而且比使用SSL轻松。

PackageInfo info;
try {
    info = getPackageManager().getPackageInfo("com.you.name", PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md;
        md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        String something = new String(Base64.encode(md.digest(), 0));
        //String something = new String(Base64.encodeBytes(md.digest()));
        Log.e("hash key", something);
    }
} catch (NameNotFoundException e1) {
    Log.e("name not found", e1.toString());
} catch (NoSuchAlgorithmException e) {
    Log.e("no such an algorithm", e.toString());
} catch (Exception e) {
    Log.e("exception", e.toString());
}

你可以在知道密钥后删除代码;)

Simply Open you Main Activity File and create below mention function: try { PackageInfo info = getPackageManager().getPackageInfo( "your.application.package.name", PackageManager.GET_SIGNATURES); for (Signature signature : info.signatures) { MessageDigest md = MessageDigest.getInstance("SHA"); md.update(signature.toByteArray()); Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT)); } } catch (PackageManager.NameNotFoundException e) { } catch (NoSuchAlgorithmException e) { }

1.1运行你的应用程序，这将为你的应用程序生成一个哈希键。

现在，打开日志猫和搜索“KeyHash”和复制哈希键。 一旦你生成了哈希键，你可以删除这个函数。

keytool -exportcert -alias androiddebugkey -keystore       C:\Users\pravin\.android\debug.keystore | "H:\OpenSSL\bin\openssl" sha1 -binary | "H:\OpenSSL\bin\openssl" base64

这对我很管用……

步骤:

1) Open command line go to - > java Keytool..... for me C:\Program Files\Java\JDK1.7\bin
2) Download OpenSSL from google
3) paste this with changing your paths -
   keytool -exportcert -alias androiddebugkey -keystore C:\Users\pravin\.android\debug.keystore | "H:\OpenSSL\bin\openssl" sha1 -binary | "H:\OpenSSL\bin\openssl" base64 

    ....................   give proper debug.keystore path and openSSL path .. 

4) Finley it may be ask u password .. so give password -> android   ...
5) you will get 28 characters that will be your has key