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第五次实验 | ||
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1.实验目标 | ||
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(1)掌握在Android App中存储数据 | ||
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2.实验步骤 | ||
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(1)打开已建好的项目soft1614080902217 | ||
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(2)在SecondActivity中加入存储功能,每一次下载都把下载地址记录到外部txt文件并且刷新记录,每次打开该界面时读入txt中的记录数据 | ||
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(3)在activity_Second_xml中加入一个文本框用于显示历史记录 | ||
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(4)完成并运行成功 | ||
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(5)用git上交 | ||
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## 3.实验结果 | ||
![image](https://github.com/curtain2017xxxx/android-labs-2018/blob/master/soft1614080902217/shiyan5/1.jpg) | ||
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## 4.实验体会 | ||
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这次实验比较有意思,学会了简单的存储,利用java.io类提供的方法简单读写数据来存储历史记录,以后要更深入学习。 |