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【保存文件到SD卡】
//文件名字
String fileName = "storage/sdcard0/001.txt";
String content = "要保存的内容";
//new一个该文件对象
File file = new File(fileName);
try {
//得到输出流
FileOutputStream outputStream = new FileOutputStream(file);
//直接往里面写一个字节数组
outputStream.write(content.getBytes());
//关闭输入流
outputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
外部储存的写入权限：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
//文件名字
String fileName = "storage/sdcard0/001.txt";
String content = "要保存的内容";
//new一个该文件对象
File file = new File(fileName);
try {
//得到输出流
FileOutputStream outputStream = new FileOutputStream(file);
//直接往里面写一个字节数组
outputStream.write(content.getBytes());
//关闭输入流
outputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
外部储存的写入权限：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
