SharedPreferences存储 单例模式

public class SharedUtils {
private static SharedUtils sharedUtils;
public static String SHARED_PREFS_NAME = Constants.APPNAME_ENGLISH;

public static SharedUtils singleton() {
if (sharedUtils == null) {
sharedUtils = new SharedUtils(UIUtil.getContext(), SHARED_PREFS_NAME);
}
return sharedUtils;
}

private SharedPreferences mSharedPrefs;

private SharedUtils(Context context, String sharedPrefsName) {
mSharedPrefs = context.getSharedPreferences(sharedPrefsName, Context.MODE_PRIVATE);
}

public <T> void put(String key, T value) {
put(new String[] { key }, new Object[] { value });
}

public <T> void put(String[] keys, T[] values) {
if (values != null && keys != null) {
Editor edit = mSharedPrefs.edit();
for (int i = 0; i < values.length; i++) {
T value = values[i];
int index = i;
if (index >= keys.length) {
index = keys.length - 1;
}
String key = keys[index];
Class<? extends Object> cls = value.getClass();
if (cls == Integer.class || cls == int.class) {
edit.putInt(key, (Integer) value);
} else if (cls == Boolean.class || cls == boolean.class) {
edit.putBoolean(key, (Boolean) value);
} else if (cls == Float.class || cls == float.class) {
edit.putFloat(key, (Float) value);
} else if (cls == Long.class || cls == long.class) {
edit.putLong(key, (Long) value);
} else if (cls == String.class) {
edit.putString(key, (String) value);
}
}
edit.commit();
}
}

@SuppressWarnings("unchecked")
public <T> T get(String key, T defValue) {
Object result = null;
if (defValue != null && key != null) {
Class<? extends Object> cls = defValue.getClass();
if (cls == Integer.class || cls == int.class) {
result = mSharedPrefs.getInt(key, (Integer) defValue);
} else if (cls == Boolean.class || cls == boolean.class) {
result = mSharedPrefs.getBoolean(key, (Boolean) defValue);
} else if (cls == Float.class || cls == float.class) {
result = mSharedPrefs.getFloat(key, (Float) defValue);
} else if (cls == Long.class || cls == long.class) {
result = mSharedPrefs.getLong(key, (Long) defValue);
} else if (cls == String.class) {
result = mSharedPrefs.getString(key, (String) defValue);
}
}
return (T) result;
}

public void clear() {
Editor edit = mSharedPrefs.edit();
edit.clear();
edit.commit();
}

public void clear(String key) {
Editor edit = mSharedPrefs.edit();
edit.remove(key);
edit.commit();
}

sharedUtils.put(String key, T value);

获取存储方式：

SharedUtils sharedUtils = SharedUtils.singleton();

sharedUtils.get(String key, T value);