1、指纹工具类：
/**
* 作者：created by meixi
* 邮箱：[email protected]
* 日期：2018/8/30 09
*/
public class FingerprintManagerUtil {
private static FingerprintManagerCompat fingerprintManagerCompat;
private static CancellationSignal cancellationSignal;
private FingerprintManagerUtil() {
}
/**
* 开始进行指纹验证
*
* @param context 上下文
* @param fingerprintListener 指纹验证回调接口
*/
public static void startFingerprinterVerification(Context context, final FingerprintListener fingerprintListener) {
fingerprintManagerCompat = FingerprintManagerCompat.from(context);
// 是否支持指纹验证
if (fingerprintManagerCompat == null || !fingerprintManagerCompat.isHardwareDetected()) {
if (fingerprintListener != null)
fingerprintListener.onNonsupport();
return;
}
// 是否录入了指纹
if (!fingerprintManagerCompat.hasEnrolledFingerprints()) {
if (fingerprintListener != null)
fingerprintListener.onEnrollFailed();
return;
}
// 回调可以开始进行认证
if (fingerprintListener != null)
fingerprintListener.onAuthenticationStart();
cancellationSignal = new CancellationSignal();
fingerprintManagerCompat.authenticate(null, 0, cancellationSignal, new FingerprintManagerCompat.AuthenticationCallback() {
@Override
public void onAuthenticationError(int errMsgId, CharSequence errString) {
// 验证出错回调，指纹传感器会关闭一段时间
super.onAuthenticationError(errMsgId, errString);
if (fingerprintListener != null)
fingerprintListener.onAuthenticationError(errMsgId, errString);
}
@Override
public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {
// 验证帮助回调
super.onAuthenticationHelp(helpMsgId, helpString);
if (fingerprintListener != null)
fingerprintListener.onAuthenticationHelp(helpMsgId, helpString);
}
@Override
public void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result) {
// 验证成功
super.onAuthenticationSucceeded(result);
if (fingerprintListener != null)
fingerprintListener.onAuthenticationSucceeded(result);
}
@Override
public void onAuthenticationFailed() {
// 验证失败 指纹验证失败后,指纹传感器不会立即关闭指纹验证,
// 系统会提供5次重试的机会,即调用5次onAuthenticationFailed()后,才会调用onAuthenticationError()
super.onAuthenticationFailed();
if (fingerprintListener != null)
fingerprintListener.onAuthenticationFailed();
}
}, null);
}
/**
* 取消指纹验证
*/
public static void cancel() {
if (cancellationSignal != null && !cancellationSignal.isCanceled())
cancellationSignal.cancel();
}
/**
* 指纹验证回调监听
*/
public interface FingerprintListener {
/**
* 手机或系统不支持指纹验证时回调
*/
void onNonsupport();
/**
* 手机支持指纹验证，但是还没有录入指纹时回调
*/
void onEnrollFailed();
/**
* 可以进行指纹验证时回调，该方法主要作用用于在进行指纹验证之前做一些操作，比如弹出对话框
*/
void onAuthenticationStart();
/**
* 指纹验证成功时回调
*
* @param result {@link FingerprintManagerCompat.AuthenticationResult} 对象
*/
void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result);
/**
* 验证失败时回调
* <br/>
* 指纹验证失败后,指纹传感器不会立即关闭指纹验证，系统会提供5次重试的机会,即调用
* 5次 {@link #onAuthenticationFailed()} 后，才会调用 {@link #onAuthenticationError(int, CharSequence)}
*/
void onAuthenticationFailed();
/**
* 验证出错时回调，指纹传感器会关闭一段时间，具体时间根据厂商不同有所区别
*
* @param errMsgId 错误信息id
* @param errString 错误信息描述
*/
void onAuthenticationError(int errMsgId, CharSequence errString);
/**
* 验证帮助回调
*
* @param helpMsgId 帮助信息id
* @param helpString 帮助信息描述
*/
void onAuthenticationHelp(int helpMsgId, CharSequence helpString);
}
/**
* FingerprintListener 回调监听适配器，减少不必要方法的重写，只需要重写需要处理的对应方法即可
*/
public abstract static class FingerprintListenerAdapter implements FingerprintListener {
@Override
public void onNonsupport() {
}
@Override
public void onEnrollFailed() {
}
@Override
public void onAuthenticationStart() {
}
@Override
public void onAuthenticationFailed() {
}
@Override
public void onAuthenticationError(int errMsgId, CharSequence errString) {
}
@Override
public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {
}
}
}
2、activity调用以及指纹识别验证回调方法（调用后，触摸手机指纹按钮即可实现指纹识别）
private AlertDialog alertDialog;
// 调用指纹验证方法
private void startVerification() {
FingerprintManagerUtil.startFingerprinterVerification(this,
new FingerprintManagerUtil.FingerprintListenerAdapter() {
@Override
public void onAuthenticationStart() {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this)
.setTitle("指纹验证")
.setMessage("指纹验证测试")
.setCancelable(false)
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
FingerprintManagerUtil.cancel();
}
});
alertDialog = builder.create();
alertDialog.show();
}
@Override
public void onNonsupport() {
Log.i("MainActivity", "onNonsupport");
Toast.makeText(MainActivity.this, "不支持指纹验证", Toast.LENGTH_SHORT).show();
}
@Override
public void onEnrollFailed() {
Log.i("MainActivity", "onEnrollFailed");
Toast.makeText(MainActivity.this, "没有录入指纹", Toast.LENGTH_SHORT).show();
}
@Override
public void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result) {
alertDialog.dismiss();
Log.i("MainActivity", "onAuthenticationSucceeded result = [" + result + "]");
Toast.makeText(MainActivity.this, "验证成功", Toast.LENGTH_SHORT).show();
}
@Override
public void onAuthenticationFailed() {
Log.i("MainActivity", "onAuthenticationFailed");
Toast.makeText(MainActivity.this, "验证失败", Toast.LENGTH_SHORT).show();
}
@Override
public void onAuthenticationError(int errMsgId, CharSequence errString) {
Log.i("MainActivity", "onAuthenticationError errMsgId = [" + errMsgId + "], errString = [" + errString + "]");
Toast.makeText(MainActivity.this, "提示: " + errString, Toast.LENGTH_SHORT).show();
}
@Override
public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {
Log.i("MainActivity", "onAuthenticationHelp helpMsgId = [" + helpMsgId + "], helpString = [" + helpString + "]");
Toast.makeText(MainActivity.this, "提示: " + helpString, Toast.LENGTH_SHORT).show();
}
});
}
需要指纹识别权限：
<uses-permission android:name="android.permission.USE_FINGERPRINT" />