activity_main.xml源码
[html] view plain copy
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:gravity="center"
- android:orientation="vertical"
- android:paddingBottom="@dimen/activity_vertical_margin"
- android:paddingLeft="@dimen/activity_horizontal_margin"
- android:paddingRight="@dimen/activity_horizontal_margin"
- android:paddingTop="@dimen/activity_vertical_margin"
- tools:context="com.liu.finger.MainActivity">
- <TextView
- android:id="@+id/textView"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="Hello World!"
- android:textSize="18sp" />
- <Button
- android:id="@+id/btn_activity_main_finger"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:layout_alignParentStart="true"
- android:layout_below="@+id/textView"
- android:layout_marginTop="54dp"
- android:text="指纹识别" />
- </LinearLayout>
[html] view plain copy
- package com.liu.finger;
- import android.Manifest;
- import android.app.KeyguardManager;
- import android.content.Context;
- import android.content.Intent;
- import android.content.pm.PackageManager;
- import android.hardware.fingerprint.FingerprintManager;
- import android.os.Bundle;
- import android.os.CancellationSignal;
- import android.support.v4.app.ActivityCompat;
- import android.support.v4.app.FragmentActivity;
- import android.util.Log;
- import android.view.View;
- import android.widget.Button;
- import android.widget.Toast;
- public class MainActivity extends FragmentActivity {
- FingerprintManager manager;
- KeyguardManager mKeyManager;
- private final static int REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS = 0;
- private final static String TAG = "finger_log";
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- manager = (FingerprintManager) this.getSystemService(Context.FINGERPRINT_SERVICE);
- mKeyManager = (KeyguardManager) this.getSystemService(Context.KEYGUARD_SERVICE);
- Button btn_finger = (Button) findViewById(R.id.btn_activity_main_finger);
- btn_finger.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- if (isFinger()) {
- Toast.makeText(MainActivity.this, "请进行指纹识别", Toast.LENGTH_LONG).show();
- Log(TAG, "keyi");
- startListening(null);
- }
- }
- });
- }
- public boolean isFinger() {
- //android studio 上,没有这个会报错
- if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
- Toast.makeText(this, "没有指纹识别权限", Toast.LENGTH_SHORT).show();
- return false;
- }
- Log(TAG, "有指纹权限");
- //判断硬件是否支持指纹识别
- if (!manager.isHardwareDetected()) {
- Toast.makeText(this, "没有指纹识别模块", Toast.LENGTH_SHORT).show();
- return false;
- }
- Log(TAG, "有指纹模块");
- //判断 是否开启锁屏密码
- if (!mKeyManager.isKeyguardSecure()) {
- Toast.makeText(this, "没有开启锁屏密码", Toast.LENGTH_SHORT).show();
- return false;
- }
- Log(TAG, "已开启锁屏密码");
- //判断是否有指纹录入
- if (!manager.hasEnrolledFingerprints()) {
- Toast.makeText(this, "没有录入指纹", Toast.LENGTH_SHORT).show();
- return false;
- }
- Log(TAG, "已录入指纹");
- return true;
- }
- CancellationSignal mCancellationSignal = new CancellationSignal();
- //回调方法
- FingerprintManager.AuthenticationCallback mSelfCancelled = new FingerprintManager.AuthenticationCallback() {
- @Override
- public void onAuthenticationError(int errorCode, CharSequence errString) {
- //但多次指纹密码验证错误后,进入此方法;并且,不能短时间内调用指纹验证
- Toast.makeText(MainActivity.this, errString, Toast.LENGTH_SHORT).show();
- showAuthenticationScreen();
- }
- @Override
- public void onAuthenticationHelp(int helpCode, CharSequence helpString) {
- Toast.makeText(MainActivity.this, helpString, Toast.LENGTH_SHORT).show();
- }
- @Override
- public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) {
- Toast.makeText(MainActivity.this, "指纹识别成功", Toast.LENGTH_SHORT).show();
- }
- @Override
- public void onAuthenticationFailed() {
- Toast.makeText(MainActivity.this, "指纹识别失败", Toast.LENGTH_SHORT).show();
- }
- };
- public void startListening(FingerprintManager.CryptoObject cryptoObject) {
- //android studio 上,没有这个会报错
- if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
- Toast.makeText(this, "没有指纹识别权限", Toast.LENGTH_SHORT).show();
- return;
- }
- manager.authenticate(cryptoObject, mCancellationSignal, 0, mSelfCancelled, null);
- }
- /**
- * 锁屏密码
- */
- private void showAuthenticationScreen() {
- Intent intent = mKeyManager.createConfirmDeviceCredentialIntent("finger", "测试指纹识别");
- if (intent != null) {
- startActivityForResult(intent, REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS);
- }
- }
- @Override
- protected void onActivityResult(int requestCode, int resultCode, Intent data) {
- if (requestCode == REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS) {
- // Challenge completed, proceed with using cipher
- if (resultCode == RESULT_OK) {
- Toast.makeText(this, "识别成功", Toast.LENGTH_SHORT).show();
- } else {
- Toast.makeText(this, "识别失败", Toast.LENGTH_SHORT).show();
- }
- }
- }
- private void Log(String tag, String msg) {
- Log.d(tag, msg);
- }
- }