我一直在开发我的个人Android应用程序来存储我的密码。 (因为lastpass是为移动支付的)。我目前使用simple password authentication
,但我希望能够利用我的fingerprint
scanner
。
AndroidManifest.xml:
<uses-permission android:name="android.permission.USE_FINGERPRINT" />
MainActivity.java:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
//Fingerprint API only available on from Android 6.0 (M)
FingerprintManager fingerprintManager = (FingerprintManager) context.getSystemService(Context.FINGERPRINT_SERVICE);
if (!fingerprintManager.isHardwareDetected()) {
// Device doesn't support fingerprint authentication
} else if (!fingerprintManager.hasEnrolledFingerprints()) {
// User hasn't enrolled any fingerprints to authenticate with
} else {
// Everything is ready for fingerprint authentication
}
}
但我如何authenticate
电话拥有者使用他的fingerprints
?
更新
我使用了Lubomir Babev的答案和它的完美。你填写你在onAuthSucceded实现的两个方法,onAuthFailed来处理如果authorizartion成功,我还必须添加一些权限检查,因为Android工作室让我这样做
public void startListening() {
if (isFingerScannerAvailableAndSet()) {
try {
if (ActivityCompat.checkSelfPermission(mContext.getApplicationContext(), Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
}
mFingerprintManager.authenticate(null, mCancellationSignal, 0 /* flags */, mAuthenticationCallback, null);
} catch (Exception e) {
e.printStackTrace();
}
}
}
和
public void startListening() {
if (isFingerScannerAvailableAndSet()) {
try {
if (ActivityCompat.checkSelfPermission(mContext.getApplicationContext(), Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
}
mFingerprintManager.authenticate(null, mCancellationSignal, 0 /* flags */, mAuthenticationCallback, null);
} catch (Exception e) {
e.printStackTrace();
}
}
}
答案 0 :(得分:1)
我为指纹事件创建了一个自定义处理程序类:
import android.content.Context;
import android.hardware.fingerprint.FingerprintManager;
import android.os.Build;
import android.os.CancellationSignal;
public class FingerprintHandler {
private Context mContext;
private FingerprintManager mFingerprintManager = null;
private CancellationSignal mCancellationSignal;
private FingerprintManager.AuthenticationCallback mAuthenticationCallback;
private OnAuthenticationSucceededListener mSucceedListener;
private OnAuthenticationErrorListener mFailedListener;
public interface OnAuthenticationSucceededListener {
void onAuthSucceeded();
}
public interface OnAuthenticationErrorListener {
void onAuthFailed();
}
public void setOnAuthenticationSucceededListener (OnAuthenticationSucceededListener listener){
mSucceedListener = listener;
}
public void setOnAuthenticationFailedListener(OnAuthenticationErrorListener listener) {
mFailedListener = listener;
}
public FingerprintHandler(Context context){
mContext = context;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
mFingerprintManager = context.getSystemService(FingerprintManager.class);
mCancellationSignal = new CancellationSignal();
mAuthenticationCallback = new FingerprintManager.AuthenticationCallback() {
@Override
public void onAuthenticationError(int errorCode, CharSequence errString) {
super.onAuthenticationError(errorCode, errString);
}
@Override
public void onAuthenticationHelp(int helpCode, CharSequence helpString) {
super.onAuthenticationHelp(helpCode, helpString);
}
@Override
public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) {
super.onAuthenticationSucceeded(result);
if( mSucceedListener != null )
mSucceedListener.onAuthSucceeded();
}
@Override
public void onAuthenticationFailed() {
super.onAuthenticationFailed();
if (mFailedListener != null)
mFailedListener.onAuthFailed();
}
};
}
}
public void startListening(){
if (isFingerScannerAvailableAndSet() ) {
try{
mFingerprintManager.authenticate(null, mCancellationSignal, 0 /* flags */, mAuthenticationCallback, null);
} catch (Exception e){
e.printStackTrace();
}
}
}
public void stopListening(){
if ( isFingerScannerAvailableAndSet() ) {
try {
mCancellationSignal.cancel();
mCancellationSignal = null;
} catch (Exception e){
e.printStackTrace();
}
}
}
public boolean isFingerScannerAvailableAndSet(){
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return false;
if( mFingerprintManager == null )
return false;
if( !mFingerprintManager.isHardwareDetected() )
return false;
if( !mFingerprintManager.hasEnrolledFingerprints())
return false;
return true;
}
}
然后在您的活动工具
中 FingerprintHandler.OnAuthenticationSucceededListener, FingerprintHandler.OnAuthenticationErrorListener
创建指纹参数:
private FingerprintHandler mFingerprintHandler;
之后在onCreate方法中初始化此指纹处理程序:
mFingerprintHandler = new FingerprintHandler(this);
mFingerprintHandler.setOnAuthenticationSucceededListener(this);
mFingerprintHandler.setOnAuthenticationFailedListener(this);
您可以检查指纹是否可以使用并在您的活动中设置:
if( mFingerprintHandler.isFingerScannerAvailableAndSet() ){
// show image or text or do something
}
您可以使用已实施的方法处理指纹响应:
@Override
public void onAuthSucceeded() {
//fingerprint auth succeded go to next activity (or do something)
}
@Override
public void onAuthFailed() {
//fingerpring auth failed, show error toast (or do something)
}
你准备好了! :) 不要忘记停止并开始在onPause和onResume方法中监听指纹:
@Override
public void onResume() {
super.onResume();
mFingerprintHandler.startListening();
}
@Override
public void onPause() {
super.onPause();
mFingerprintHandler.stopListening();
}
快乐编码:)))
答案 1 :(得分:0)
你可以用它。它支持所有锁定机制(PIN,模式,密码,指纹扫描仪)。
Intent credentialsIntent = null;
KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP)
credentialsIntent = keyguardManager.createConfirmDeviceCredentialIntent("title", "desc"), context.getString(R.string.verification_desc));
//If phone lock is set, launch the unlock screen
if (credentialsIntent != null) {
((Activity) context).startActivityForResult(credentialsIntent, CREDENTIALS_RESULT);
}
//Phone is not locked
else {
doTheWork();
}
@Override
public void onActivityResult(int requestCode) {
if (requestCode == CREDENTIALS_RESULT) {
doTheWork;
}
else
Log.e("TA", "Error");
}