apk文件需要利用jks進行簽名,可以防止應用被惡意篡改替換,標識開發者身份,加強了應用的安全性.(keystore也可以)
第一種利用keytool工具
keytool -list -v -keystore canvaskeystore.jks
第二種利用代碼獲取
從高德獲取:
public static String 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 = new StringBuffer();
for (int i = 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();
return result.substring(0, result.length()-1);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
3 第三種最簡單的方法
Android Studio :