Android 如何获取已保存文本文件的内容(Java)
有没有办法将文本文件的内容作为字符串获取 例如,我将文件的内容设置为: 姓名:约翰,年龄:34岁,电子邮件:someone@example.com 我也见过类似的问题,但它们并没有让我明白 编辑:我的代码-Android 如何获取已保存文本文件的内容(Java),android,android-studio,text-files,tostring,Android,Android Studio,Text Files,Tostring,有没有办法将文本文件的内容作为字符串获取 例如,我将文件的内容设置为: 姓名:约翰,年龄:34岁,电子邮件:someone@example.com 我也见过类似的问题,但它们并没有让我明白 编辑:我的代码- String fileName = "Sample" + ".txt"; File file = new File(Environment.getExternalStoragePublicDirectory(
String fileName = "Sample" + ".txt";
File file = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOCUMENTS) + File.separator + fileName);
try {
BufferedReader br = new BufferedReader(new FileReader(file));
String currentLine;
String content;
StringBuilder stringBuilder = new StringBuilder();
while ((currentLine = br.readLine()) != null) {
stringBuilder.append(currentLine);
}
content = stringBuilder.toString();
System.out.println(content);
} catch (IOException e) {
e.printStackTrace();
}
}
// somewhere else in the code
final Button viewData = findViewById(R.id.viewData); // Defining the viewData button
viewData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
viewFileData();
}
});
谢谢你的帮助。你可以试试这样的想法
public class Main {
public static void main(String[] args) throws IOException {
File file = new File("C:\\Users\\Hasindu\\Desktop\\javaSample\\src\\sample\\sample.txt");//Text file location
BufferedReader br = new BufferedReader(new FileReader(file));
String currentLine;
String content = null;
StringBuilder stringBuilder = new StringBuilder();//Using the StringBuilder class of java for the concatenation.
while ((currentLine = br.readLine()) != null) {
stringBuilder.append(currentLine); //Read all the lines in the text file and concatenate them for a single stringBulder object.
}
content = stringBuilder.toString();//Coverting the StringBuilder object to a String
System.out.println(content);
}
}
是的,为什么不可能呢。您可以读取字符串中的文本。那是标准的。到目前为止你都试过什么?