java bufferedReader.readline 返回 null
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bufferedReader.readline is returning null
提问by Canvas
just a really quick question i have a file in AFC/save.txt which has this in it
只是一个非常简单的问题，我在 AFC/save.txt 中有一个文件，里面有这个
peter
彼得
now I use this code in Java and it returns null, any idea why?
现在我在 Java 中使用这段代码，它返回 null，知道为什么吗？
//Android
try {
InputStream fis = game.getFileIO().readFile("AFC/save.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
if(br.readLine() != null)
{
Log.d("File", "Value : " + br.readLine() );
player = br.readLine();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
the value is null.
该值为空。
回答by frogmanx
Which value is null?
哪个值为空？
At if(br.readLine() != null)you are reading in the first line of the file.
在if(br.readLine() != null)您正在阅读的文件的第一行。
At Log.d("File", "Value : " + br.readLine() );you are at the second line of the file.
在Log.d("File", "Value : " + br.readLine() );你在文件的第二行。
At player = br.readLine();you are reading the third line of the file. If there is only one line in the file, this line will return null.
在 player = br.readLine();您阅读的文件中的第三行。如果文件中只有一行，该行将返回 null。
Try:
尝试：
try {
String temp;
InputStream fis = game.getFileIO().readFile("AFC/save.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
if((temp = br.readLine()) != null)
{
player = temp;
Log.d("File", "Value : " + player );
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
