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我正在制作应用程序,它将使用文本文件来存储密码。我目前正试图将该密码保存到该文件,它看起来像保存但我不知道,因为我无法从文件中读取。使用openFileOutput从文本文件读取/写入
直接尝试将密码保存到文件后,我试图在文本内容中显示文件的内容,它们用于输入字符串(这只是为了测试它是否保存),但没有出现。
public class setPin extends ActionBarActivity {
private final static String STORETEXT = "storetext.txt";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_set_pin);
}
public void buttonClick(View v) {
EditText txtEditor=(EditText)findViewById(R.id.editText);
try {
FileOutputStream fos = openFileOutput(STORETEXT, Context.MODE_PRIVATE);
Writer out = new OutputStreamWriter(fos);
out.write(txtEditor.getText().toString());
txtEditor.setText("");
fos.close();
Toast.makeText(this, "Saved password", Toast.LENGTH_LONG).show();
}
catch (Throwable t) {
Toast.makeText(this, "Exception: " + t.toString(), Toast.LENGTH_LONG).show();
}
//HERE I TRY TO PRINT THE SAVED STRING INTO THE TEXTFIELD
try {
BufferedReader inputReader = new BufferedReader(new InputStreamReader(
openFileInput(STORETEXT)));
String inputString;
StringBuffer stringBuffer = new StringBuffer();
while ((inputString = inputReader.readLine()) != null) {
stringBuffer.append(inputString + "\n");
}
txtEditor.setText(stringBuffer.toString());
} catch (IOException e) {
e.printStackTrace();
}
}
行fos.write(txtEditor.getText()。toString()); 无法解析方法'write(java.lang.String)。 – user3343264 2015-03-08 22:34:29
Woops。检查更新它实际上需要一个字节[] – 2015-03-08 22:37:11
它现在显示在文本字段,所以它看起来像它的工作,非常感谢 – user3343264 2015-03-08 22:39:40