Diff: dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/util/PreferenceUtil.java

Revision:

45:2aa9f933c8d2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/util/PreferenceUtil.java	Tue Jul 18 16:34:48 2017 +0800
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
+ * 
+ * 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.baidu.duer.dcs.util;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.os.Build;
+
+import java.util.Map;
+
+/**
+ * 提供统一的Preference util方法
+ * <p>
+ * Created by zhangyan42@baidu.com on 2017/5/24.
+ */
+public class PreferenceUtil {
+    private static final String APP_SHARD = "com.baidu.duer.dcs";
+
+    /**
+     * 保存数据的方法，拿到保存数据的具体类型，然后根据类型调用不同的保存方法
+     *
+     * @param context 上下文
+     * @param key     key
+     * @param object  value
+     */
+    public static void put(Context context, String key, Object object) {
+        put(context, APP_SHARD, key, object);
+    }
+
+    public static void put(Context context, String spName, String key, Object object) {
+        SharedPreferences sp = context.getSharedPreferences(spName,
+                Context.MODE_PRIVATE);
+        Editor editor = sp.edit();
+
+        if (object instanceof String) {
+            editor.putString(key, (String) object);
+        } else if (object instanceof Integer) {
+            editor.putInt(key, (Integer) object);
+        } else if (object instanceof Boolean) {
+            editor.putBoolean(key, (Boolean) object);
+        } else if (object instanceof Float) {
+            editor.putFloat(key, (Float) object);
+        } else if (object instanceof Long) {
+            editor.putLong(key, (Long) object);
+        } else {
+            editor.putString(key, object.toString());
+        }
+        editSubmit(editor);
+    }
+
+    private static void editSubmit(Editor editor) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
+            editor.apply();
+        } else {
+            editor.commit();
+        }
+    }
+
+    /**
+     * 得到保存数据的方法，
+     * 根据默认值得到保存的数据的具体类型，
+     * 然后调用相对于的方法获取值
+     *
+     * @param context       上下文
+     * @param key           key
+     * @param defaultObject default-value
+     */
+    public static Object get(Context context, String key, Object defaultObject) {
+        return get(context, APP_SHARD, key, defaultObject);
+    }
+
+    public static Object get(Context context, String spName, String key, Object defaultObject) {
+        SharedPreferences sp = context.getSharedPreferences(spName,
+                Context.MODE_PRIVATE);
+
+        if (defaultObject instanceof String) {
+            return sp.getString(key, (String) defaultObject);
+        } else if (defaultObject instanceof Integer) {
+            return sp.getInt(key, (Integer) defaultObject);
+        } else if (defaultObject instanceof Boolean) {
+            return sp.getBoolean(key, (Boolean) defaultObject);
+        } else if (defaultObject instanceof Float) {
+            return sp.getFloat(key, (Float) defaultObject);
+        } else if (defaultObject instanceof Long) {
+            return sp.getLong(key, (Long) defaultObject);
+        }
+        return null;
+    }
+
+    /**
+     * 移除某个key值已经对应的值
+     *
+     * @param context 上下文
+     * @param key     key
+     */
+    public static void remove(Context context, String key) {
+        remove(context, APP_SHARD, key);
+    }
+
+    public static void remove(Context context, String spName, String key) {
+        SharedPreferences sp = context.getSharedPreferences(spName,
+                Context.MODE_PRIVATE);
+        Editor editor = sp.edit();
+        editor.remove(key);
+        editSubmit(editor);
+    }
+
+    /**
+     * 清除所有数据
+     *
+     * @param context 上下文
+     */
+    public static void clear(Context context) {
+        clear(context, APP_SHARD);
+    }
+
+    public static void clear(Context context, String spName) {
+        SharedPreferences sp = context.getSharedPreferences(spName, Context.MODE_PRIVATE);
+        Editor editor = sp.edit();
+        editor.clear();
+        editSubmit(editor);
+    }
+
+    /**
+     * 查询某个key是否已经存在
+     *
+     * @param context 上下文
+     * @param key     key
+     */
+    public static boolean contains(Context context, String key) {
+        return contains(context, APP_SHARD, key);
+    }
+
+    public static boolean contains(Context context, String spName, String key) {
+        SharedPreferences sp = context.getSharedPreferences(spName, Context.MODE_PRIVATE);
+        return sp.contains(key);
+    }
+
+    /**
+     * 返回所有的键值对
+     *
+     * @param context 上下文
+     */
+    public static Map<String, ?> getAll(Context context) {
+        return getAll(context, APP_SHARD);
+    }
+
+    public static Map<String, ?> getAll(Context context, String spName) {
+        SharedPreferences sp = context.getSharedPreferences(spName,
+                Context.MODE_PRIVATE);
+        return sp.getAll();
+    }
+}