如何在 Android 上创建文本文件并将数据插入该文件 [英] How to create text file and insert data to that file on Android
问题描述
如何创建 file.txt 并在我的代码中包含一些变量内容的文件中插入数据,例如:population [][];在Android上,因此文件资源管理器中我们的包上会有文件夹文件(data/data/ourpackage/files/ourfiles.txt)谢谢
How can I create file.txt and insert data on file with content of some of variable on my code for example : population [][]; on Android, so there will be folder files on our package in file explorer (data/data/ourpackage/files/ourfiles.txt) Thank You
推荐答案
使用此代码,您可以写入 SDCard 中的文本文件.除此之外,您还需要在 Android Manifest 中设置权限.
Using this code you can write to a text file in the SDCard. Along with it, you need to set a permission in the Android Manifest.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
这是代码:
public void generateNoteOnSD(Context context, String sFileName, String sBody) {
try {
File root = new File(Environment.getExternalStorageDirectory(), "Notes");
if (!root.exists()) {
root.mkdirs();
}
File gpxfile = new File(root, sFileName);
FileWriter writer = new FileWriter(gpxfile);
writer.append(sBody);
writer.flush();
writer.close();
Toast.makeText(context, "Saved", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
}
在写入文件之前,您还必须检查您的 SDCard 是否已挂载 &外部存储状态是可写的.
Before writing files you must also check whether your SDCard is mounted & the external storage state is writable.
Environment.getExternalStorageState()
这篇关于如何在 Android 上创建文本文件并将数据插入该文件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!