package licola.demo.com.huabandemo.Util;
import java.util.Map;
import java.util.Set;
import android.content.ContentProvider;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.SharedPreferences;
public class SPUtils {
public SPUtils() {
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* 保存在手机里面的文件名 和读写模式
*/
public static final String FILE_NAME = "share_data";
public static final int MODE = Context.MODE_PRIVATE;
/**
* 异步提交方法
* @param context
* @param key
* @param object
*/
public static void putApply(Context context, String key, Object object) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
SharedPreferences.Editor editor = sp.edit();
judgePutDataType(key, object, editor);
editor.apply();
}
/**
* 同步提交方法
* @param context
* @param key
* @param object
* @return
*/
public static boolean putCommit(Context context, String key, Object object){
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
SharedPreferences.Editor editor = sp.edit();
judgePutDataType(key, object, editor);
return editor.commit();
}
/**
* 根据不同类型 使用不同的写入方法
* @param key
* @param object
* @param editor
*/
private static void judgePutDataType(String key, Object object, SharedPreferences.Editor editor) {
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 if (object instanceof Set) {
editor.putStringSet(key, (Set<String>) object);
} else {
editor.putString(key, object.toString());
}
}
public static void putAdd(SharedPreferences.Editor editor, String key, Object object) {
judgePutDataType(key, object, editor);
}
/**
* 得到保存数据的方法,我们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
* @param key
* @param defaultObject
* @return
*/
public static Object get(Context context, String key, Object defaultObject) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
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);
} else if (defaultObject instanceof Set) {
return sp.getStringSet(key, (Set<String>) defaultObject);
}
return null;
}
/**
* 移除某个key值已经对应的值
*
* @param context
* @param key
*/
public static void remove(Context context, String key) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
SharedPreferences.Editor editor = sp.edit();
editor.remove(key);
editor.apply();
}
/**
* 清除所有数据
*
* @param context
*/
public static void clear(Context context) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
SharedPreferences.Editor editor = sp.edit();
editor.clear();
editor.apply();
}
/**
* 查询某个key是否已经存在
*
* @param context
* @param key
* @return
*/
public static boolean contains(Context context, String key) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
return sp.contains(key);
}
/**
* 返回所有的键值对
*
* @param context
* @return
*/
public static Map<String, ?> getAll(Context context) {
SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
MODE);
return sp.getAll();
}
}