增加写入拨号，读取数据，优化无障碍

app/src/main/java/com/ttstd/elderlyassistant/utils/WriteMessageUtils.java

@@ -0,0 +1,45 @@
+package com.ttstd.elderlyassistant.utils;
+
+import android.net.Uri;
+import android.nfc.FormatException;
+import android.nfc.NdefMessage;
+import android.nfc.NdefRecord;
+import android.nfc.Tag;
+import android.nfc.tech.Ndef;
+
+import java.io.IOException;
+
+public class WriteMessageUtils {
+    public static void writePhoneToTag(Tag tag, String phoneNumber) {
+        // 构建tel:协议的URI
+        Uri uri = Uri.parse("tel:" + phoneNumber);
+        // 创建URI类型的NdefRecord
+        NdefRecord uriRecord = NdefRecord.createUri(uri);
+        NdefMessage message = new NdefMessage(new NdefRecord[]{uriRecord});
+
+        try {
+            Ndef ndef = Ndef.get(tag);
+            ndef.connect();
+            ndef.writeNdefMessage(message); // 写入NDEF消息
+            ndef.close();
+        } catch (IOException | FormatException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void writeUrlToTag(Tag tag, String url) {
+        // 确保URL包含协议（如http://）
+        Uri uri = Uri.parse(url);
+        NdefRecord uriRecord = NdefRecord.createUri(uri);
+        NdefMessage message = new NdefMessage(new NdefRecord[]{uriRecord});
+
+        try {
+            Ndef ndef = Ndef.get(tag);
+            ndef.connect();
+            ndef.writeNdefMessage(message);
+            ndef.close();
+        } catch (IOException | FormatException e) {
+            e.printStackTrace();
+        }
+    }
+}