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Contact.java

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+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * 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 net.micode.notes.data;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.provider.ContactsContract.CommonDataKinds.Phone;
+import android.provider.ContactsContract.Data;
+import android.telephony.PhoneNumberUtils;
+import android.util.Log;
+
+import java.util.HashMap;
+
+public class Contact {
+    // 静态缓存，用于存储已查询过的电话号码对应的联系人姓名
+    private static HashMap<String, String> sContactCache;
+    // 用于日志记录的标签
+    private static final String TAG = "Contact";
+
+    // 查询条件，用于根据电话号码查询联系人姓名
+    private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
+    + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
+    + " AND " + Data.RAW_CONTACT_ID + " IN "
+            + "(SELECT raw_contact_id "
+            + " FROM phone_lookup"
+            + " WHERE min_match = '+')";
+
+    /**
+     * 获取电话号码对应的联系人姓名
+     * @param context 应用程序的上下文
+     * @param phoneNumber 要查询的电话号码
+     * @return 返回电话号码对应的联系人姓名，如果找不到则返回null
+     */
+    public static String getContact(Context context, String phoneNumber) {
+        // 初始化缓存
+        if(sContactCache == null) {
+            sContactCache = new HashMap<String, String>();
+        }
+
+        // 如果缓存中已经有该电话号码的联系人信息，直接返回
+        if(sContactCache.containsKey(phoneNumber)) {
+            return sContactCache.get(phoneNumber);
+        }
+
+        // 使用电话号码生成查询条件
+        String selection = CALLER_ID_SELECTION.replace("+",
+                PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
+
+        // 查询联系人信息
+        Cursor cursor = context.getContentResolver().query(
+                Data.CONTENT_URI,
+                new String [] { Phone.DISPLAY_NAME },  // 需要获取的字段，这里是联系人姓名
+                selection,  // 查询条件
+                new String[] { phoneNumber },  // 查询参数，填充到查询条件中
+                null);  // 排序方式，null表示不排序
+
+        // 检查查询结果并返回联系人姓名
+        if (cursor != null && cursor.moveToFirst()) {
+            try {
+                String name = cursor.getString(0);  // 获取查询到的联系人姓名
+                sContactCache.put(phoneNumber, name);  // 将结果缓存起来
+                return name;  // 返回联系人姓名
+            } catch (IndexOutOfBoundsException e) {
+                // 捕捉异常并记录错误日志
+                Log.e(TAG, " Cursor get string error " + e.toString());
+                return null;
+            } finally {
+                // 关闭游标，释放资源
+                cursor.close();
+            }
+        } else {
+            // 如果没有匹配的联系人，记录日志并返回null
+            Log.d(TAG, "No contact matched with number:" + phoneNumber);
+            return null;
+        }
+    }
+}

Notes.java

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+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * 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 net.micode.notes.data;
+
+import android.net.Uri;
+
+public class Notes {
+    // 认证标识符，用于在内容提供者中区分不同的数据集合
+    public static final String AUTHORITY = "micode_notes";
+
+    // 用于日志记录的标签
+    public static final String TAG = "Notes";
+
+    // 用于表示不同类型的文件
+    public static final int TYPE_NOTE = 0;
+    public static final int TYPE_FOLDER = 1;
+    public static final int TYPE_SYSTEM = 2;
+
+    /**
+     * 以下ID是系统文件夹的标识符
+     * {@link Notes#ID_ROOT_FOLDER} 表示默认文件夹
+     * {@link Notes#ID_TEMPARAY_FOLDER} 表示临时文件夹
+     * {@link Notes#ID_CALL_RECORD_FOLDER} 表示用于存储通话记录的文件夹
+     */
+    public static final int ID_ROOT_FOLDER = 0;
+    public static final int ID_TEMPARAY_FOLDER = -1;
+    public static final int ID_CALL_RECORD_FOLDER = -2;
+    public static final int ID_TRASH_FOLER = -3;
+
+    // Intent 额外数据的键，用于传递提醒日期、背景颜色、Widget ID、文件夹ID等信息
+    public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
+    public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
+    public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
+    public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
+    public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
+    public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
+
+    // Widget 类型常量
+    public static final int TYPE_WIDGET_INVALIDE = -1;
+    public static final int TYPE_WIDGET_2X = 0;
+    public static final int TYPE_WIDGET_4X = 1;
+
+    public static class DataConstants {
+        // 文本便签的 MIME 类型
+        public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
+        // 通话记录便签的 MIME 类型
+        public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
+    }
+
+    /**
+     * Uri 用于查询所有的便签和文件夹
+     */
+    public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
+
+    /**
+     * Uri 用于查询具体数据
+     */
+    public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
+
+    /**
+     * NoteColumns 接口定义了便签和文件夹表中的列
+     */
+    public interface NoteColumns {
+        // 唯一标识符
+        public static final String ID = "_id";
+
+        // 父文件夹的 ID
+        public static final String PARENT_ID = "parent_id";
+
+        // 创建日期
+        public static final String CREATED_DATE = "created_date";
+
+        // 最新修改日期
+        public static final String MODIFIED_DATE = "modified_date";
+
+        // 提醒日期
+        public static final String ALERTED_DATE = "alert_date";
+
+        // 文件夹名称或便签内容的摘要
+        public static final String SNIPPET = "snippet";
+
+        // 便签对应的 Widget ID
+        public static final String WIDGET_ID = "widget_id";
+
+        // 便签对应的 Widget 类型
+        public static final String WIDGET_TYPE = "widget_type";
+
+        // 便签的背景颜色 ID
+        public static final String BG_COLOR_ID = "bg_color_id";
+
+        // 是否有附件，1 表示有，0 表示无
+        public static final String HAS_ATTACHMENT = "has_attachment";
+
+        // 文件夹中的便签数量
+        public static final String NOTES_COUNT = "notes_count";
+
+        // 文件类型：文件夹或便签
+        public static final String TYPE = "type";
+
+        // 最近同步的 ID
+        public static final String SYNC_ID = "sync_id";
+
+        // 本地修改标记
+        public static final String LOCAL_MODIFIED = "local_modified";
+
+        // 移动到临时文件夹之前的原父文件夹 ID
+        public static final String ORIGIN_PARENT_ID = "origin_parent_id";
+
+        // Gtask 的 ID
+        public static final String GTASK_ID = "gtask_id";
+
+        // 版本号
+        public static final String VERSION = "version";
+    }
+
+    /**
+     * DataColumns 接口定义了数据表中的列
+     */
+    public interface DataColumns {
+        // 唯一标识符
+        public static final String ID = "_id";
+
+        // MIME 类型
+        public static final String MIME_TYPE = "mime_type";
+
+        // 关联的便签 ID
+        public static final String NOTE_ID = "note_id";
+
+        // 创建日期
+        public static final String CREATED_DATE = "created_date";
+
+        // 最新修改日期
+        public static final String MODIFIED_DATE = "modified_date";
+
+        // 数据内容
+        public static final String CONTENT = "content";
+
+        // 通用数据列，用于存储整数类型数据
+        public static final String DATA1 = "data1";
+
+        // 通用数据列，用于存储整数类型数据
+        public static final String DATA2 = "data2";
+
+        // 通用数据列，用于存储文本类型数据
+        public static final String DATA3 = "data3";
+
+        // 通用数据列，用于存储文本类型数据
+        public static final String DATA4 = "data4";
+
+        // 通用数据列，用于存储文本类型数据
+        public static final String DATA5 = "data5";
+    }
+
+    /**
+     * TextNote 类继承自 DataColumns，专门处理文本便签相关的数据
+     */
+    public static final class TextNote implements DataColumns {
+        // 模式，表示便签是否处于检查列表模式，1 为检查列表模式，0 为普通模式
+        public static final String MODE = DATA1;
+
+        public static final int MODE_CHECK_LIST = 1;
+
+        // MIME 类型，用于表示文本便签的集合
+        public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
+
+        // MIME 类型，用于表示单个文本便签
+        public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
+
+        // Uri 用于查询文本便签
+        public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
+    }
+
+    /**
+     * CallNote 类继承自 DataColumns，专门处理通话记录便签相关的数据
+     */
+    public static final class CallNote implements DataColumns {
+        // 通话日期
+        public static final String CALL_DATE = DATA1;
+
+        // 通话的电话号码
+        public static final String PHONE_NUMBER = DATA3;
+
+        // MIME 类型，用于表示通话记录便签的集合
+        public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
+
+        // MIME 类型，用于表示单个通话记录便签
+        public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
+
+        // Uri 用于查询通话记录便签
+        public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
+    }
+}