SharedPreferences.Editor.clear()方法

2019年6月19日 291次阅读 来源: dongbaoming 
SharedPreferences sd = this.getSharedPreferences("MainActivity", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sd.edit();
editor.putString("name", "dongbaoming");
editor.putString("age", "27");
editor.commit();
Log.i("MainActivity", sd.getString("name", "..") + sd.getString("age", "00"));
editor.clear();
editor.commit();
Log.i("MainActivity", sd.getString("name", "..") + sd.getString("age", "00"));

结果：MainActivity: dongbaoming27
      MainActivity: ..00




SharedPreferences sd = this.getSharedPreferences("MainActivity", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sd.edit();
editor.putString("name", "dongbaoming");
editor.putString("age", "27");
editor.commit();
Log.i("MainActivity", sd.getString("name", "..") + sd.getString("age", "00"));
editor.putString("class", "class three");
editor.clear();
editor.commit();
Log.i("MainActivity", sd.getString("name", "..") + sd.getString("age", "00")+sd.getString("class","no"));

结果：03-28 15:57:54.791 12798-12798/? I/MainActivity: dongbaoming27

03-28 15:57:54.794 12798-12798/? I/MainActivity: ..00class three

SharedPreferences.Editor.clear()方法是把之前commit后保存的所有信息全部进行清空，同一次commit进行的操作如果含有clear()操作，则先执行clear()再执行其他，与代码前后顺序没有关系。

    原文作者：dongbaoming
    原文地址: https://blog.csdn.net/dongbaoming/article/details/67637832
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
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