android根据包名获取签名MD5信息

private Signature[] getRawSignature(Context paramContext, String paramString) {        if ((paramString == null) || (paramString.length() == 0)) {            errout("getSignature, packageName is null");            return null;        }        PackageManager localPackageManager = paramContext.getPackageManager();        PackageInfo localPackageInfo;        try {            localPackageInfo = localPackageManager.getPackageInfo(paramString, PackageManager.GET_SIGNATURES);            if (localPackageInfo == null) {                errout("info is null, packageName = " + paramString);                return null;            }        } catch (PackageManager.NameNotFoundException localNameNotFoundException) {            errout("NameNotFoundException");            return null;        }        return localPackageInfo.signatures;    }

private void getSign(String packageName) {        Signature[] arrayOfSignature = getRawSignature(this, packageName);        if ((arrayOfSignature == null) || (arrayOfSignature.length == 0)) {            errout("signs is null");            return;        }        stdout(MD5.getMessageDigest(arrayOfSignature[0].toByteArray()));    }

源码地址： GenSignature

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