public staticString sHA1(Context context) {
try{
PackageInfo info = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES);
byte[] cert = info.signatures[0].toByteArray();
MessageDigest md = MessageDigest.getInstance("SHA1");
byte[] publicKey = md.digest(cert);
StringBuffer hexString =newStringBuffer();
for(inti =0; i < publicKey.length; i++) {
String appendString = Integer.toHexString(0xFF& publicKey[i]).toUpperCase(Locale.US);
if(appendString.length() ==1) hexString.append("0");
hexString.append(appendString);
hexString.append(":");
}
String result = hexString.toString();
returnresult.substring(0, result.length() -1);
}catch(PackageManager.NameNotFoundException e) {
e.printStackTrace();
}catch(NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
