03.SharedPreUtil

一直想写下SharePreUtil，结合网上和自己的东西，最终结果就是这样的，大家看看怎么样？

public class SharedPreUtil {

    private static SharedPreUtil singleTon;
    private static SharedPreferences sp;
    private static SharedPreferences.Editor editor;

    private static final String SHARED_NAME = "SHARED_NAME";
    public static final String STRING = "String";
    public static final String INTEGER = "Integer";
    public static final String BOOLEAN = "Boolean";
    public static final String FLOAT = "Float";
    public static final String LONG = "Long";


    public static SharedPreUtil builder(Context context) {
        if (singleTon == null) {
            synchronized (SharedPreUtil.class) {
                if (singleTon == null) {
                    singleTon = new SharedPreUtil();
                }
            }
        }
        if (sp == null) {
            sp = context.getSharedPreferences(SHARED_NAME, Context.MODE_PRIVATE);
            editor = sp.edit();
        }
        return singleTon;
    }


    public void save(String key, @NonNull Object object) {
        if (object == null) object = "";
        String type = object.getClass().getSimpleName();
        if (STRING.equals(type)) {
            editor.putString(key, (String) object);
        } else if (INTEGER.equals(type)) {
            editor.putInt(key, (Integer) object);
        } else if (BOOLEAN.equals(type)) {
            editor.putBoolean(key, (Boolean) object);
        } else if (FLOAT.equals(type)) {
            editor.putFloat(key, (Float) object);
        } else if (LONG.equals(type)) {
            editor.putLong(key, (Long) object);
        }
        editor.apply();
    }


    public Object get(String key, @NonNull Object defaultObject) {
        String type = defaultObject.getClass().getSimpleName();
        if (STRING.equals(type)) {
            return sp.getString(key, (String) defaultObject);
        } else if (INTEGER.equals(type)) {
            return sp.getInt(key, (Integer) defaultObject);
        } else if (BOOLEAN.equals(type)) {
            return sp.getBoolean(key, (Boolean) defaultObject);
        } else if (FLOAT.equals(type)) {
            return sp.getFloat(key, (Float) defaultObject);
        } else if (FLOAT.equals(type)) {
            return sp.getLong(key, (Long) defaultObject);
        }
        return null;
    }


    //移除某个值
    public void remove(String key) {
        editor.remove(key);
        editor.apply();
    }

    //清楚所有值
    public void clear() {
        editor.clear();
        editor.apply();
    }

    //是否包含这个key
    public boolean contains(String key) {
        return sp.contains(key);
    }
}

//SharedPreference存储
 SharedPreUtil.builder(this).save("zsl-s", "好");
 SharedPreUtil.builder(this).save("zsl-b", true);
 SharedPreUtil.builder(this).save("zsl-i", 100);
 SharedPreUtil.builder(this).save("zsl-f", 10f);
 SharedPreUtil.builder(this).save("zsl-l", 99l);

//取值和清除等操作
String s = (String) SharedPreUtil.builder(this).get("zsl-s", "李四");
boolean b = SharedPreUtil.builder(this).contains("zsl-b");
SharedPreUtil.builder(this).remove("zsl-s");
SharedPreUtil.builder(this).clear();