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0csy/TestDevToolProject/devcommlib/src/main/java/com/tool/csy/devcsytool/utils/sp/SpUtils.java

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+package com.tool.csy.devcsytool.utils.sp;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.util.Base64;
+import android.util.Log;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+
+/**
+ * Created by chenshouyin on 2017/11/29.
+ * 我的博客:http://blog.csdn.net/e_inch_photo
+ * 我的Github:https://github.com/chenshouyin
+ * SpUtils存储基本类型以及对象
+ * 也可拓展存储图片,Base64编码,存字符串
+ */
+
+
+public class SpUtils {
+
+    private static SpUtils SpUtils = null;
+
+    //单例模式，把Context传进去  
+    public static SpUtils getInstance(Context context) {
+        if (SpUtils == null) {
+            synchronized (SpUtils.class) {
+                if (SpUtils == null) {
+                    SpUtils = new SpUtils();
+                    SpUtils.setContext(context);
+                    return SpUtils;
+                }
+            }
+        }
+
+        return SpUtils;
+    }
+
+    private Context context;
+
+    public void setContext(Context context) {
+        this.context = context;
+    }
+
+
+
+    //存Boolean 型数据  
+    public void putBoolean(String key, boolean value) {
+        try {
+            SharedPreferences.Editor editor = getSP().edit();
+            editor.putBoolean(key, value);
+            editor.commit();
+        } catch (NullPointerException exception) {
+            Log.d("sp", "" + exception);
+        }
+    }
+
+    //取Boolean 型数据
+    public boolean getBoolean(String key, boolean defValue) {
+        try {
+            return getSP().getBoolean(key, defValue);
+        } catch (NullPointerException exception) {
+            Log.d("sp", "" + exception);
+            return defValue;
+        }
+    }
+
+    //存Long 型数据
+    public void putLong(String key, long value) {
+        try {
+            SharedPreferences.Editor editor = getSP().edit();
+            editor.putLong(key, value);
+            editor.commit();
+        } catch (NullPointerException exception) {
+            Log.d("sp", "" + exception);
+        }
+    }
+
+
+    //取Long 型数据  
+    public long getLong(String key, long defValue) {
+        try {
+            return getSP().getLong(key, defValue);
+        } catch (NullPointerException exception) {
+            Log.d("sp", "" + exception);
+            return defValue;
+        }
+    }
+
+    //存整型
+    public void putInt(String key, int value) {
+        try {
+            SharedPreferences.Editor editor = getSP().edit();
+            editor.putInt(key, value);
+            editor.commit();
+        } catch (Exception e) {
+            Log.d("sp", "" + e);
+        }
+    }
+
+    //取整型  
+    public int getInt(String key, int defaultValue) {
+        try {
+            return getSP().getInt(key, defaultValue);
+        } catch (Exception e) {
+            Log.d("sp", "" + e);
+            return defaultValue;
+
+        }
+    }
+
+
+    //取String  
+    public String getString(String key, String defValue) {
+        try {
+            return getSP().getString(key, defValue);
+        } catch (NullPointerException e) {
+            Log.d("sp", "" + e);
+            return defValue;
+        }
+    }
+
+    //存String  
+    public void putString(String key, String value) {
+        try {
+            SharedPreferences.Editor editor = getSP().edit();
+            editor.putString(key, value);
+            editor.commit();
+        } catch (NullPointerException e) {
+            Log.d("sp", "" + e);
+        }
+    }
+
+    //清除数据  
+    public void clear() {
+        try {
+            SharedPreferences.Editor editor = getSP().edit();
+            editor.clear();
+            editor.commit();
+        } catch (NullPointerException e) {
+            Log.d("sp", "" + e);
+        }
+    }
+
+    //获得SharedPreferences对象  
+    private SharedPreferences getSP() {
+        return context.getSharedPreferences("_sp_file_", Context.MODE_PRIVATE);
+    }
+
+    private SharedPreferences getSP(String name) {
+        return context.getSharedPreferences(name, Context.MODE_PRIVATE);
+    }
+
+
+    /**
+     * 保存实体类,实际上是当做string存的
+     * 也可保存List<Enty>只要是可序列化的
+     * @param key
+     * @param obj
+     */
+    public void putBean(String key, Object obj) {
+        if (obj instanceof Serializable) {// obj必须实现Serializable接口，否则会出问题
+            try {
+                ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                ObjectOutputStream oos = new ObjectOutputStream(baos);
+                oos.writeObject(obj);
+                String string64 = new String(Base64.encode(baos.toByteArray(), 0));
+                putString(key,string64);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+        } else {
+            throw new IllegalArgumentException(
+                    "the obj must implement Serializble");
+        }
+
+    }
+
+    public Object getBean(String key) {
+        Object obj = null;
+        try {
+            String base64 = getString(key,"");
+            if (base64.equals("")) {
+                return null;
+            }
+            byte[] base64Bytes = Base64.decode(base64.getBytes(), 1);
+            ByteArrayInputStream bais = new ByteArrayInputStream(base64Bytes);
+            ObjectInputStream ois = new ObjectInputStream(bais);
+            obj = ois.readObject();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return obj;
+    }
+}
+