FMXExpress
[help me] ]I used android-object-pascal-wrapper, and need some help
Excuse me, I downloaded the file from https://github.com/FMXExpress/android-object-pascal-wrapper and made some minor changes, JClass => Jlang_Class Otherwise I will get a lot of circular references. I tried to use them in delphi, but I got an error "java.lang.IllegalArgumentException: andriod.hardware.fingerprint.FingerprintManager $ AuthenticationCallback is not an interface." I am a beginner of delphi. Can you help me, thank you!
uses ... ... android.Hardware.fingerprint.FingerprintManager, android.app.KeyguardManager, android.Hardware.fingerprint.FingerprintManager_AuthenticationCallback, android.Hardware.fingerprint.FingerprintManager_AuthenticationResult;
type
TAuthCallback = class(TJavaLocal, JFingerprintManager_AuthenticationCallback)
{ [JavaSignature('android/hardware/fingerprint/FingerprintManager$AuthenticationCallback')]
JFingerprintManager_AuthenticationCallback = interface(IJavaInstance) //Fixed me: JObject => IJavaInstance }
public
procedure onAuthenticationError(errorCode : Integer; errString : JCharSequence) ; cdecl;
procedure onAuthenticationFailed ; cdecl;
procedure onAuthenticationHelp(helpCode : Integer; helpString : JCharSequence) ; cdecl;
procedure onAuthenticationSucceeded(result : JFingerprintManager_AuthenticationResult) ; cdecl;
end;
... ...
var JObject: JObject; FingerprintManager: JFingerprintManager; begin JObject:= TAndroidHelper.Context.getSystemService (TJContext.JavaClass.FINGERPRINT_SERVICE); FingerprintManager := TJFingerprintManager.Wrap ((JObject as ILocalObject).GetObjectID);
if FingerprintManager.isHardwareDetected then begin if FingerprintManager.hasEnrolledFingerprints then begin FingerprintManager.authenticate(nil, nil, 0, AuthCallback, nil); //AuthCallback := TAuthCallback.Create; end else raise Exception.Create(''没有指纹录入！'); end else raise Exception.Create('不支持指纹识别！'); end;
No idea. All of this code is auto generated. Which version of the Android SDK wrapper are you using? Some of the older ones may not be cleaned of circular references.
