我的应用程序将多行文本保存EditView到一个文本文件中,但问题是如果我重新启动我的应用程序,只会恢复最后一行。(也许也有可能是FileOutputStreamonly保存了最后一行,我不确定¯_(ツ)_/¯)
这是我的代码:
private static final String TAG = "EditDataActivity";
public static String Textfile = "test.txt";
private Button btnSave,btnDelete;
private EditText editable_item;
EditText Zutaten, Zubereitung;
DatabaseHelper mDatabaseHelper;
private String selectedName;
private int selectedID;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_data_layout);
btnSave = (Button) findViewById(R.id.btnSave);
btnDelete = (Button) findViewById(R.id.btnDelete);
editable_item = (EditText) findViewById(R.id.editable_item);
mDatabaseHelper = new DatabaseHelper(this);
Zutaten = (EditText)findViewById(R.id.editText4);
Zubereitung = (EditText)findViewById(R.id.editText2);
Zutaten.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
try{
EditText test = (EditText)findViewById(R.id.editable_item);
String testText = test.getText().toString();
String Textfile2 = testText + ".txt";
EditText field = (EditText)findViewById(R.id.editText4);
String text = field.getText().toString();
FileOutputStream fos = openFileOutput(Textfile2, Context.MODE_PRIVATE);
fos.write(text.getBytes());
fos.close();
}catch (IOException e){
System.out.println("Error");
}
}
});
完全希望你能帮助我 :) 谢谢!
慕勒3428872
相关分类