keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android 

在Android studio 4+(不确定版本)中，如果你点击右边栏的Gradle，它不会显示任何生成签名报告的选项。它会告诉你:

点击任务列表未构建…不构建gradle任务列表。并保存设置。

然后点击gradle同步按钮:

然后你会看到signingreport选项:

如果你需要SHA1谷歌地图，你可以在LogCat中看到你的错误日志。

获取生产密钥库的SHA1:

Build --> Generate Signed APK... Create keystore with password and follow the steps Go to your Mac/Library/Java/JavaVirtualMachines/jdk1.8.0_20.jdk/Contents/Home/bin and drag the bin folder to the terminal after cd command to point at it so you can use the keytool tool. So, in terminal write cd (drag bin here) then press enter. Then, copy and paste this in the terminal: keytool -exportcert -alias Your_keystore_AliasName -keystore /Users/Home/Development/AndroidStudioProjects/YoutubeApp/app/YoutubeApp_keystore.jks -list -v Erase my path and go where you stored your keystore and drag your keystone and drop it after -keystore in the command line so the path will get created. Also, erase Your_keystore_AliaseName to put your alias keystone name that you used when you created it. Press Enter and enter the password :) When you enter the password, the terminal won't show that it receives keyboard entries, but it actually does, so put the password and press Enter even if you don't see the password is typed out.

我是这样做的:

步骤1:进入这个文件夹

On Mac: /Users/<username>/.android/

On Windows: C:\Documents and Settings\<username>\.android\

On Linux: ~/.android/

第二步:运行命令行:

keytool -list -v -keystore debug.keystore -storepass android

您将看到SHA-1密钥。

简单，在你的启动屏幕中调用这个方法:hash()和getCertificateSHA1Fingerprint()，然后键将在日志中可见

private void hash() {


            PackageInfo info;
            try {

                info = getPackageManager().getPackageInfo(
                        this.getPackageName(), PackageManager.GET_SIGNATURES);

                for (android.content.pm.Signature signature : info.signatures) {
                    MessageDigest md;
                    md = MessageDigest.getInstance("SHA");
                    md.update(signature.toByteArray());
                    Log.e("sagar sha key", md.toString());
                    String something = new String(Base64.encode(md.digest(), 0));
                    Log.e("sagar Hash key", something);
                    System.out.println("Hash key" + something);
                }

            } catch (PackageManager.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());
            }
        }

        private void getCertificateSHA1Fingerprint() {
            PackageManager pm = this.getPackageManager();
            String packageName = this.getPackageName();
            int flags = PackageManager.GET_SIGNATURES;
            PackageInfo packageInfo = null;
            try {
                packageInfo = pm.getPackageInfo(packageName, flags);
            } catch (PackageManager.NameNotFoundException e) {
                e.printStackTrace();
            }
            Signature[] signatures = packageInfo.signatures;
            byte[] cert = signatures[0].toByteArray();
            InputStream input = new ByteArrayInputStream(cert);
            CertificateFactory cf = null;
            try {
                cf = CertificateFactory.getInstance("X509");
            } catch (CertificateException e) {
                e.printStackTrace();
            }
            X509Certificate c = null;
            try {
                c = (X509Certificate) cf.generateCertificate(input);
            } catch (CertificateException e) {
                e.printStackTrace();
            }
            String hexString = "";
            try {
                MessageDigest md = MessageDigest.getInstance("SHA1");
                byte[] publicKey = md.digest(c.getEncoded());
                Log.e("sagar SHA",byte2HexFormatted(publicKey));
            } catch (NoSuchAlgorithmException e1) {
                e1.printStackTrace();
            } catch (CertificateEncodingException e) {
                e.printStackTrace();
            }
        }

        public static String byte2HexFormatted(byte[] arr) {
            StringBuilder str = new StringBuilder(arr.length * 2);
            for (int i = 0; i < arr.length; i++) {
                String h = Integer.toHexString(arr[i]);
                int l = h.length();
                if (l == 1) h = "0" + h;
                if (l > 2) h = h.substring(l - 2, l);
                str.append(h.toUpperCase());
                if (i < (arr.length - 1)) str.append(':');
            }
            return str.toString();
        }

谢谢你！