I admittedly am still learning and would consider myself a novice (at best) regarding programming. I am having trouble with appending a file in android. Whenever I save, it will rewrite over the file, and I am having trouble understanding how to keep the file that is already there and only add a new line. Hoping for some clarity/advice. Here is how I am saving to the file (which rewrites the file each time I save).
public void saveText(View view){
try {
//open file for writing
OutputStreamWriter out = new OutputStreamWriter(openFileOutput("save.txt", MODE_PRIVATE));
//write information to file
EditText text = (EditText)findViewById(R.id.editText1);
String text2 = text.getText().toString();
out.write(text2);
out.write('\n');
//close file
out.close();
Toast.makeText(this,"Text Saved",Toast.LENGTH_LONG).show();
} catch (java.io.IOException e) {
//if caught
Toast.makeText(this, "Text Could not be added",Toast.LENGTH_LONG).show();
}
}
Change this,
OutputStreamWriter out = new OutputStreamWriter(openFileOutput("save.txt", MODE_PRIVATE));
to,
OutputStreamWriter out = new OutputStreamWriter(openFileOutput("save.txt", Context.MODE_APPEND));
This will append your new contents to the already existing file.
I Hope it helps!
Use this method, pass filename and the value to be added in the file
public void writeFile(String mValue) {
try {
String filename = Environment.getExternalStorageDirectory()
.getAbsolutePath() + mFileName;
FileWriter fw = new FileWriter("ENTER_YOUR_FILENAME", true);
fw.write(mValue + "\n\n");
fw.close();
} catch (IOException ioe) {
}
}
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