I couldn't get that one to work so I'm trying something else.
Here's where the button is pressed:
btnMP.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
memNum = memNum +
Double.parseDouble(txtCalc.getText().toString());
operator = 0; }
});
Here's a thingie I hammered together from parts:
// Save MEMORY
public void WriteMemory(OnClickListener onClickListener, double
memNum){
File sdcard = Environment.getExternalStorageDirectory();
File destinationdir = new File(sdcard,"/download/calculator");
destinationdir.mkdir();
File destinationfile = new File(destinationdir,"memory.dat");
FileOutputStream fOut = null;
OutputStreamWriter osw = null;
try{
destinationfile.createNewFile();
fOut = new FileOutputStream(destinationfile);
osw = new OutputStreamWriter(fOut);
osw.write((int) memNum);
osw.flush();
Toast.makeText((Context) onClickListener, "Memory
saved",Toast.LENGTH_SHORT).show();
}
catch (Exception e) {
e.printStackTrace();
// Toast.makeText((Context) onClickListener, "Memory not
saved",Toast.LENGTH_SHORT).show();
}
finally {
try {
osw.close();
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
This is called by inserting WriteMemory(this,memNum); in the button
routine thusly:
btnMP.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
memNum = memNum +
Double.parseDouble(txtCalc.getText().toString());
operator = 0; }
WriteMemory(this,memNum);
});
The file is created but nothing is written in it. What's missing?
Brian
On Sep 28, 3:38 pm, "Yusuf Saib (T-Mobile USA)" <yusuf.s...@t-
Mobile.com> wrote:
> txt is declared inside your "if (hasChanged) {" scope. Then you use it
> after the corresponding "}".
>
> Yusuf Saib
> Android
> ·T· · ·Mobile· stick together
> The views, opinions and statements in this email are those of the
> author solely in their individual capacity, and do not necessarily
> represent those of T-Mobile USA, Inc.
>
> On Sep 27, 10:02 am, bgoody <bgoody...@gmail.com> wrote:
>
> > Hi. I am trying to hack this bit of code tosavethe results of a
> > calculation to disk but it says that the variable (txt) cannot be
> > resolved.
> > Any ideas!
>
> > private void handleEquals(int newOperator) {
> > if (hasChanged) {
> > switch (operator) {
> > case 1:
> > num = num +Double.parseDouble(txtCalc.getText().toString());
> > break;
> > case 2:
> > num = num -Double.parseDouble(txtCalc.getText().toString());
> > break;
> > case 3:
> > num = num *Double.parseDouble(txtCalc.getText().toString());
> > break;
> > case 4:
> > num = num /Double.parseDouble(txtCalc.getText().toString());
> > break;
>
> > }
>
> > String txt =Double.toString(num);
> > txtCalc.setText(txt);
> > txtCalc.setSelection(txt.length());
>
> > readyToClear = true;
> > hasChanged = false;
>
> > }
>
> > FileOutputStream fOut = openFileOutput
> > ("samplefile.txt",MODE_WORLD_READABL E);
> > OutputStreamWriter osw = new OutputStreamWriter(fOut);
> > osw.write(txt);
> > osw.flush();
> > fOut.close();
> > osw.close();
> > operator = newOperator;
>
> > }
>
>
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