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 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 (note13         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-feature17         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     <application25         android:allowBackup="true"26         android:icon="@drawable/ic_launcher"27         android:label="@string/app_name"28         android:theme="@style/AppTheme" >29         <activity30             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         // 獲取默認(rèn)的NFC控制器  11         nfcAdapter = NfcAdapter.getDefaultAdapter(this);  12         if (nfcAdapter == null) {  13             promt.setText("設(shè)備不支持NFC！");  14             System.out.println("設(shè)備不支持NFC！");  15             finish();  16             return;  17         }  18         if (!nfcAdapter.isEnabled()) {  19             promt.setText("請(qǐng)?jiān)谙到y(tǒng)設(shè)置中先啟用NFC功能！");  20             System.out.println("請(qǐng)?jiān)谙到y(tǒng)設(shè)置中先啟用NFC功能！");  21             finish();  22             return;  23         }24         promt.setText("正常啟用APP！");  25         System.out.println("正常啟用APP！"); 26     }  27   28     @Override  29     protected void onResume() {  30         super.onResume(); 31         promt.setText(getIntent().getAction());  32         System.out.println("正常啟用APP！"); 33         34         PowerManager pm=(PowerManager) getSystemService(Context.POWER_SERVICE);  35         //獲取電源管理器對(duì)象  36         PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "bright");  37         //獲取PowerManager.WakeLock對(duì)象,后面的參數(shù)|表示同時(shí)傳入兩個(gè)值,最后的是LogCat里用的Tag  38         wl.acquire();  39         //點(diǎn)亮屏幕  40         wl.release();  41         //釋放  42    43         KeyguardManager  km= (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);  44         //得到鍵盤(pán)鎖管理器對(duì)象  45         KeyguardLock kl = km.newKeyguardLock("unLock");    46         //參數(shù)是LogCat里用的Tag  47         kl.disableKeyguard();   48         //解鎖</pre><br><br>  49     } 50 }