对于Android应用程序

这段代码用于在Android应用程序中获取Facebook集成的哈希键。我已经测试了所有的设备，一切正常。只更改此代码的包名:

private void facebookHashKey() {

    try {
        PackageInfo info = getPackageManager().getPackageInfo("com.app.helpcove", PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String hashCode  = Base64.encodeToString(md.digest(), Base64.DEFAULT);
            System.out.println("Print the hashKey for Facebook :"+hashCode);
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }
}

我找到的最简单的解决方法是:

打开原木猫 尝试使用Android SDK访问Facebook 在日志中寻找这样的行: 04-24 01:14:08.605: I/System.out(31395): invalid_key:Android key mismatch。 您的密钥“abcdefgHIJKLMN+OPqrstuvwzyz”与您的 应用程序设置。检查您的应用程序设置 http://www.facebook.com/developers 复制“abcdefgHIJKLMN+OPqrstuvwzyz”，并将其粘贴到Facebook Android密钥哈希区。

facebook开发者网站上的官方文件:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Add code to print out the key hash
    try {
        PackageInfo info = getPackageManager().getPackageInfo(
                "com.facebook.samples.hellofacebook", 
                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 (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

最好的方法是使用以下代码:

private void getHashKey(String pkgName)
{
    try
    {
        PackageInfo info = getPackageManager().getPackageInfo(pkgName, PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures)
        {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String hashKey = Base64.encodeBytes(md.digest());
            _hashKey_et.setText(hashKey);
            Log.i("KeyTool", pkgName + " -> hashKey = " + hashKey);
        }
    }
    catch (NameNotFoundException e)
    {
        e.printStackTrace();
    }
    catch (NoSuchAlgorithmException e)
    {
        e.printStackTrace();
    }
}

但我很沮丧，因为没有简单的工具来为Facebook应用程序生成HashKey。每次我都必须使用Openssl和Keytool，或者使用代码从签名中获得哈希值……

所以我写了一个简单的KeyGenTool，将为您做这项工作:-> KeyGenTool谷歌播放<-

享受:)

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import android.os.Bundle;
import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.Signature;
import android.text.Editable;
import android.util.Base64;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {

    Button btn;
    EditText et;
    PackageInfo info;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn=(Button)findViewById(R.id.button1);
        et=(EditText)findViewById(R.id.editText1);
        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                try {
                    info = getPackageManager().getPackageInfo("com.example.id", 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()));
                        et.setText("" + something);
                        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());
                }
            }
        });
    }



}

下载openSSL ->安装它->通常会安装在C:\ openSSL

然后打开CMD并键入

cd../../Program Files (Enter)

java (Enter)

dir (Enter)

cd jdk1.6.0_17 (varies with jdk versions) (Enter)

查看jdk版本到C:/program files/java/jdk_version

cd bin (enter)

keytool -exportcert -alias androiddebugkey -keystore C:Users\Shalini\.android\debug.keystore | "C:\OpenSSL\bin\openssl sha1 -binary | "C:\OpenSSL\bin\openssl base64 (Enter)

它会问你密码是android。