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
activity_main.xml源码
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:gravity="center"
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android:orientation="vertical"
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android:paddingBottom="@dimen/activity_vertical_margin"
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android:paddingLeft="@dimen/activity_horizontal_margin"
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android:paddingRight="@dimen/activity_horizontal_margin"
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android:paddingTop="@dimen/activity_vertical_margin"
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tools:context="com.liu.finger.MainActivity">
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<TextView
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android:id="@+id/textView"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Hello World!"
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android:textSize="18sp" />
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<Button
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android:id="@+id/btn_activity_main_finger"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_alignParentStart="true"
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android:layout_below="@+id/textView"
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android:layout_marginTop="54dp"
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android:text="指纹识别" />
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</LinearLayout>
MainActivity.java源码
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package com.liu.finger;
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import android.Manifest;
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import android.app.KeyguardManager;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.hardware.fingerprint.FingerprintManager;
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import android.os.Bundle;
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import android.os.CancellationSignal;
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import android.support.v4.app.ActivityCompat;
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import android.support.v4.app.FragmentActivity;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import android.widget.Toast;
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public class MainActivity extends FragmentActivity {
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FingerprintManager manager;
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KeyguardManager mKeyManager;
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private final static int REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS = 0;
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private final static String TAG = "finger_log";
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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manager = (FingerprintManager) this.getSystemService(Context.FINGERPRINT_SERVICE);
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mKeyManager = (KeyguardManager) this.getSystemService(Context.KEYGUARD_SERVICE);
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Button btn_finger = (Button) findViewById(R.id.btn_activity_main_finger);
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btn_finger.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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if (isFinger()) {
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Toast.makeText(MainActivity.this, "请进行指纹识别", Toast.LENGTH_LONG).show();
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Log(TAG, "keyi");
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startListening(null);
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}
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}
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});
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}
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public boolean isFinger() {
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//android studio 上，没有这个会报错
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
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Toast.makeText(this, "没有指纹识别权限", Toast.LENGTH_SHORT).show();
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return false;
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}
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Log(TAG, "有指纹权限");
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//判断硬件是否支持指纹识别
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if (!manager.isHardwareDetected()) {
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Toast.makeText(this, "没有指纹识别模块", Toast.LENGTH_SHORT).show();
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return false;
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}
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Log(TAG, "有指纹模块");
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//判断 是否开启锁屏密码
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if (!mKeyManager.isKeyguardSecure()) {
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Toast.makeText(this, "没有开启锁屏密码", Toast.LENGTH_SHORT).show();
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return false;
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}
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Log(TAG, "已开启锁屏密码");
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//判断是否有指纹录入
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if (!manager.hasEnrolledFingerprints()) {
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Toast.makeText(this, "没有录入指纹", Toast.LENGTH_SHORT).show();
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return false;
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}
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Log(TAG, "已录入指纹");
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return true;
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}
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CancellationSignal mCancellationSignal = new CancellationSignal();
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//回调方法
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FingerprintManager.AuthenticationCallback mSelfCancelled = new FingerprintManager.AuthenticationCallback() {
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@Override
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public void onAuthenticationError(int errorCode, CharSequence errString) {
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//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
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Toast.makeText(MainActivity.this, errString, Toast.LENGTH_SHORT).show();
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showAuthenticationScreen();
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}
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@Override
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public void onAuthenticationHelp(int helpCode, CharSequence helpString) {
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Toast.makeText(MainActivity.this, helpString, Toast.LENGTH_SHORT).show();
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}
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@Override
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public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) {
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Toast.makeText(MainActivity.this, "指纹识别成功", Toast.LENGTH_SHORT).show();
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}
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@Override
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public void onAuthenticationFailed() {
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Toast.makeText(MainActivity.this, "指纹识别失败", Toast.LENGTH_SHORT).show();
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}
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};
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public void startListening(FingerprintManager.CryptoObject cryptoObject) {
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//android studio 上，没有这个会报错
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
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Toast.makeText(this, "没有指纹识别权限", Toast.LENGTH_SHORT).show();
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return;
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}
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manager.authenticate(cryptoObject, mCancellationSignal, 0, mSelfCancelled, null);
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}
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/**
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* 锁屏密码
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*/
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private void showAuthenticationScreen() {
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Intent intent = mKeyManager.createConfirmDeviceCredentialIntent("finger", "测试指纹识别");
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if (intent != null) {
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startActivityForResult(intent, REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS);
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}
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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if (requestCode == REQUEST_CODE_CONFIRM_DEVICE_CREDENTIALS) {
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// Challenge completed, proceed with using cipher
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if (resultCode == RESULT_OK) {
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Toast.makeText(this, "识别成功", Toast.LENGTH_SHORT).show();
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} else {
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Toast.makeText(this, "识别失败", Toast.LENGTH_SHORT).show();
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}
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}
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}
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private void Log(String tag, String msg) {
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Log.d(tag, msg);
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}
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}
android 6.0 指纹识别调用
转载https://www.codesocang.com/appboke/36433.html
