[安卓] 15、用NFC解锁手机并自动打开应用

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.beautifulzzzz.nfc_test"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk
 8         android:minSdkVersion="14"
 9         android:targetSdkVersion="19" />
10 
11   <!--
12         see http://www.developer.com/ws/android/nfc-programming-in-android.html for reference (note
13         that the minimum API version must be set as 10 in build.gradle (Module: app) for this to work,
14         and that classes being used from the nfc package require a minimum API version 14):
15     -->
16     <uses-feature
17         android:name="android.hardware.nfc"
18         android:required="true" />
19     <uses-permission android:name="android.permission.NFC" />
20     
21     <uses-permission android:name="android.permission.WAKE_LOCK"/>    
22     <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>  
23 
24     <application
25         android:allowBackup="true"
26         android:icon="@drawable/ic_launcher"
27         android:label="@string/app_name"
28         android:theme="@style/AppTheme" >
29         <activity
30             android:name=".Activity_Main"
31             android:label="@string/app_name" >
32             <intent-filter>
33                 <action android:name="android.intent.action.MAIN" />
34                 <category android:name="android.intent.category.LAUNCHER" />
35             </intent-filter>                
36             
37             <intent-filter>
38                 <action android:name="android.nfc.action.TAG_DISCOVERED" />
39                 <category android:name="android.intent.category.DEFAULT" />
40             </intent-filter>  
41         </activity>
42     </application>
43 
44 </manifest>

 1 public class Activity_Main extends Activity {
 2 
 3     NfcAdapter nfcAdapter;  
 4     TextView promt;  
 5     @Override  
 6     public void onCreate(Bundle savedInstanceState) {  
 7         super.onCreate(savedInstanceState);  
 8         setContentView(R.layout.ui_main); 
 9         promt = (TextView) findViewById(R.id.promt);  
10         // 获取默认的NFC控制器  
11         nfcAdapter = NfcAdapter.getDefaultAdapter(this);  
12         if (nfcAdapter == null) {  
13             promt.setText("设备不支持NFC！");  
14             System.out.println("设备不支持NFC！");  
15             finish();  
16             return;  
17         }  
18         if (!nfcAdapter.isEnabled()) {  
19             promt.setText("请在系统设置中先启用NFC功能！");  
20             System.out.println("请在系统设置中先启用NFC功能！");  
21             finish();  
22             return;  
23         }
24         promt.setText("正常启用APP！");  
25         System.out.println("正常启用APP！"); 
26     }  
27   
28     @Override  
29     protected void onResume() {  
30         super.onResume(); 
31         promt.setText(getIntent().getAction());  
32         System.out.println("正常启用APP！"); 
33         
34         PowerManager pm=(PowerManager) getSystemService(Context.POWER_SERVICE);  
35         //获取电源管理器对象  
36         PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "bright");  
37         //获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag  
38         wl.acquire();  
39         //点亮屏幕  
40         wl.release();  
41         //释放  
42    
43         KeyguardManager  km= (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);  
44         //得到键盘锁管理器对象  
45         KeyguardLock kl = km.newKeyguardLock("unLock");    
46         //参数是LogCat里用的Tag  
47         kl.disableKeyguard();   
48         //解锁</pre><br><br>  
49     } 
50 }