如果你使用React Native，调试。Keystore在android/app中，但可能不在~/.android中。

设置调试。Keystore路径如下:

keytool -list -v -keystore {PROJECT_ROOT}/android/app/debug.keystore -alias androiddebugkey -storepass android -keypass android

控制台将打印如下内容:

Alias name: androiddebugkey
Creation date: Jan 1, 2014
Entry type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: CN=Android Debug, OU=Android, O=Unknown, L=Unknown, ST=Unknown, C=US
Issuer: CN=Android Debug, OU=Android, O=Unknown, L=Unknown, ST=Unknown, C=US
Serial number: 2==Serial Number==2
Valid from: Wed Jan 01 06:35:04 CST 2014 until: Wed May 01 06:35:04 CST 2052
Certificate fingerprints:
     SHA1: 5E:=========== SHA1 SIGNING KEY ===========:25
     SHA256: FA:============ SHA 256 ===================9C
Signature algorithm name: SHA1withRSA
Subject Public Key Algorithm: 2048-bit RSA key
Version: 3

首先有一个与fb-sdk android-support-v4.jar相同的.jar文件。 然后使用以下命令生成SHA1密钥:

PackageInfo info;
try {

    info = getPackageManager().getPackageInfo(
        "com.example.worldmission", 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));
        Log.e("Hash key", something);
        System.out.println("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());
}

如果你使用的是Android studio，这很简单。

创建一个新的谷歌映射活动，你可以看到如下图所示的sha1指纹。

[![更改构建变量，然后您可以看到应用程序的运行，这将导致错误

你必须找到释放密钥的SHA1代码，并在开发人员控制台输入它。(对我来说，开发人员控制台是firebase，有些人可能使用不同的服务)找到SHA1代码。简单的方法是

Go to Build --- Select Build Variant -- On the left Side Select "Release" as build variant -- now go to module settings ( or try to run project , android studio will tell you about a error and click fix error button) --- Select Signing tab --- add your release key and passwords -- now goto build types -- select release -- on signing config select your release key config -- now run your project -- now run your signing report --- you can find SHA1 under release build -- enter that sha1 code on your developer console

对我来说，这是一个循序渐进的过程。

首先运行应用程序，然后按照以下步骤(也显示在截图)

点击签署报告 打开gradle控制台对话框 它会显示你的SHA-1证书编号

右边Gradle—>签名项目获得所有密钥