Android开发10个常用工具类.docxVIP

Android开发10个常用工具类 L日志工具类Ljava package com.zhy.utils; import android.util.Log; ** * Log统一管理类 */ public class L private L() /* cannot be instantiated */ throw new UnsupportedOperationException(cannot be instantiated); *保存在手机里面的文件名 public static final String FILE_NAME = share_data; /** *保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保 存方法 * @param context @param key @param object */ public static void put(Context context. String key. Object object) { SharedPreferences sp = context.getSharedPreferences(FILE_NAMEJ Context.MODE_PRIVATE); SharedPreferences.Editor editor = sp.edit(); if (object instanceof String) editor. putSt ring (key,, (String) object); } else if (object instanceof Integer) editor.putInt(key(Integer) object); } else if (object instanceof Boolean) editor.putBoolean(keyJ (Boolean) object); } else if (object instanceof Float) editor.putFloat(key(Float) object); } else if (object instanceof Long) editor.putLong(key(Long) object); } else editor.putString(key, object.toString()); ) SharedPreferencesCompat.apply(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 contextString key. Object defaultobject) SharedPreferences sp = context.getSharedPreferences(FILE_NAME^ Context.MODE_PRIVATE); if (defaultobject instanceof String) return sp.getString(key^ (String) defaultobject); } else if (defaultobject instanceof Integer) return sp.get工nt(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); ) 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_NAMEJ Context.MODE_PRIVATE); SharedPreferences.Editor editor =