From 509fbb4df3bdbc8c78614f5297459f7afe2b1ba6 Mon Sep 17 00:00:00 2001
From: Jeff Hamilton <jham@android.com>
Date: Tue, 18 Jan 2011 09:01:51 -0800
Subject: [PATCH] Sample code for foreground NDEF Push APIs.

---
 samples/ApiDemos/AndroidManifest.xml          |  7 ++
 .../android/apis/nfc/ForegroundNdefPush.java  | 86 +++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundNdefPush.java

diff --git a/samples/ApiDemos/AndroidManifest.xml b/samples/ApiDemos/AndroidManifest.xml
index 61b124346..71c3a06b1 100644
--- a/samples/ApiDemos/AndroidManifest.xml
+++ b/samples/ApiDemos/AndroidManifest.xml
@@ -1975,6 +1975,13 @@
             />
         </activity>
 
+        <activity android:name=".nfc.ForegroundNdefPush" android:label="NFC/ForegroundNdefPush">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.SAMPLE_CODE" />
+            </intent-filter>
+        </activity>
+
     </application>
 
     <instrumentation android:name=".app.LocalSampleInstrumentation"
diff --git a/samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundNdefPush.java b/samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundNdefPush.java
new file mode 100644
index 000000000..fe478ed1a
--- /dev/null
+++ b/samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundNdefPush.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.example.android.apis.nfc;
+
+import com.example.android.apis.R;
+
+import android.app.Activity;
+import android.nfc.NdefMessage;
+import android.nfc.NdefRecord;
+import android.nfc.NfcAdapter;
+import android.os.Bundle;
+import android.widget.TextView;
+
+import java.nio.charset.Charset;
+import java.util.Locale;
+
+/**
+ * An example of how to use the NFC foreground NDEF push APIs.
+ */
+public class ForegroundNdefPush extends Activity {
+    private NfcAdapter mAdapter;
+    private TextView mText;
+    private NdefMessage mMessage;
+
+    public static NdefRecord newTextRecord(String text, Locale locale, boolean encodeInUtf8) {
+        byte[] langBytes = locale.getLanguage().getBytes(Charset.forName("US-ASCII"));
+
+        Charset utfEncoding = encodeInUtf8 ? Charset.forName("UTF-8") : Charset.forName("UTF-16");
+        byte[] textBytes = text.getBytes(utfEncoding);
+
+        int utfBit = encodeInUtf8 ? 0 : (1 << 7);
+        char status = (char) (utfBit + langBytes.length);
+
+        byte[] data = new byte[1 + langBytes.length + textBytes.length]; 
+        data[0] = (byte) status;
+        System.arraycopy(langBytes, 0, data, 1, langBytes.length);
+        System.arraycopy(textBytes, 0, data, 1 + langBytes.length, textBytes.length);
+
+        return new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], data);
+    }
+
+    @Override
+    public void onCreate(Bundle savedState) {
+        super.onCreate(savedState);
+
+        mAdapter = NfcAdapter.getDefaultAdapter(this);
+
+        setContentView(R.layout.foreground_dispatch);
+        mText = (TextView) findViewById(R.id.text);
+        if (mAdapter != null) {
+            mText.setText("Tap another Android phone with NFC to push 'NDEF Push Sample'");
+        } else {
+            mText.setText("This phone is not NFC enabled.");
+        }
+
+        // Create an NDEF message with some sample text
+        mMessage = new NdefMessage(
+                new NdefRecord[] { newTextRecord("NDEF Push Sample", Locale.ENGLISH, true)});        
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mAdapter != null) mAdapter.enableForegroundNdefPush(this, mMessage);
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        if (mAdapter != null) mAdapter.disableForegroundNdefPush(this);
+    }
+}