SPUtils是针对Android SharedPreferences的工具，主要是为了对SharedPreferences进行简化操作，提供了一系列非常实用方法。 It is cool。
编写这个工具主要是因为工作中写的App比较简单，每次都会使用Sharedpreferences，用多了，觉得麻烦，所以就想能不能操作更简单一点，于是这个工具就诞生了。
- 对SharedPreferences获取数据提供了如下类似方法：
public static String getString(Application application, String name, String key) {
if (checkApplicationAndStrings(application, name, key)) {
return getSP(application, name).getString(key, "").trim();
}
return "";
}
public static String getString(Application application, String key) {
return getString(application, spFileName, key);
}
public static String getString(Activity activity, String key) {
return getString(activity.getApplication(), spFileName, key);
}
public static String getString(String name, String key) {
return getString(application, name, key);
}
public static String getString(String key) {
return getString(application, spFileName, key);
}- 对SharedPreferences设置数据提供了如下类似方法：
public static void pushString(Application application, String name, String key, String value) {
if (checkApplicationAndStrings(application, name, key, value)) {
getSP(application, name).edit().putString(key, value.trim()).commit();
}
}
public static void pushString(Application application, String key, String value) {
pushString(application, spFileName, key, value);
}
public static void pushString(Activity activity, String key, String value) {
pushString(activity.getApplication(), spFileName, key, value);
}
public static void pushString(String name, String key, String value) {
pushString(application, name, key, value);
}
public static void pushString(String key, String value) {
pushString(application, spFileName, key, value);
}- 使用如下方法先设置Application对象：
SPUtils.setApplication(application);- 后续的方法就可以随意使用，本人建议在使用之前，粗略的看一下源代码。
- 从下面的Demo中你就知道该怎么使用这个工具了:
public static void testSPUtils(Application application) {
setApplication(application);
pushString("name", "China");
Log.e("SPUtils", "name = " + (String)getValue("name", new String()));
pushInt("int", 3);
Log.e("SPUtils", "int = " + getValue("int", Integer.valueOf(0)));
pushFloat("float", 3.14f);
Log.e("SPUtils", "float = " + getValue("float", Float.valueOf(0)));
HashMap<String, Object> keyValues = new HashMap<String, Object>();
keyValues.put("name", "SZ");
keyValues.put("address", "shenzhen");
keyValues.put("float", 3.14f);
keyValues.put("int", 3);
keyValues.put("boolean", true);
pushValues(keyValues);
HashMap<String, Object> keyTypes = new HashMap<String, Object>();
keyTypes.put("name", new String());
keyTypes.put("address", new String());
keyTypes.put("float", Float.valueOf(0));
keyTypes.put("int", Integer.valueOf(0));
keyTypes.put("boolean", Boolean.valueOf(false));
Log.e(TAG, getValues(keyTypes).toString());
Log.e("SPUtils", "age = " + getValue("age", Integer.valueOf(0)));
Log.e("SPUtils", "int = " + getValue("int", Integer.valueOf(0)));
Log.e("SPUtils", "float = " + getValue("float", Float.valueOf(0)));
Log.e("SPUtils", "name = " + (String)getValue("name", new String()));
/**
* output:
* E/SPUtils(8456): name = China
* E/SPUtils(8456): int = 3
* E/SPUtils(8456): float = 3.14
* E/SPUtils(8456): {boolean=true, address=shenzhen, float=3.14, int=3, name=SZ}
* E/SPUtils(8456): age = 0
* E/SPUtils(8456): int = 3
* E/SPUtils(8456): float = 3.14
* E/SPUtils(8633): name = SZ
*/
}
}- 曾剑锋
- 程梦真
在这里得感谢程梦真，他在这个工具诞生的过程中，提供了宝贵的意见。