[英]FileOutputStream creates a file, but FileInputStream
我正在使用FileOutputStream
在不是MainActivity
的活動中創建文件。 創建文件后,銷毀活動時,將寫入所需的數據,但是當我從MainActivity
重新啟動活動時,找不到文件。 我可以在代碼中進行哪些更改,以免出現fileNotFoundException
? 相關代碼在這里:
try {
fis = new FileInputStream("words");
ois = new ObjectInputStream(fis);
} catch (FileNotFoundException e1) {
fnfexception = e1;
} catch (IOException ioe) {
ioe.printStackTrace();
}
EOFException eof = null;
int counter = 0;
if (fnfexception == null) {
while (eof == null) {
try {
if (words == null) words = new Dict[1];
else words = Arrays.copyOf(words, counter + 1);
words[counter] = (Dict) ois.readObject();
counter++;
} catch (EOFException end) {
eof = end;
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
}
}
}
wordStartCount = counter;
wordCount = counter;
fnfexception = null;
try {
fos = openFileOutput("words", Context.MODE_PRIVATE);
oos = new ObjectOutputStream(fos);
} catch (FileNotFoundException e1) {
fnfexception = e1;
} catch (IOException ioe) {
ioe.printStackTrace();
}
您使用錯誤的方式讀取內部文件,請使用以下代碼
try {
FileInputStream fis = context.openFileInput("file_name");
int content;
StringBuilder str = new StringBuilder();
while ((content = fis.read()) != -1)
str.append((char) content);
fis.close();
String savedText = str.toString();
} catch (IOException e) {
e.printStackTrace();
}
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