[android-beginners] Re: Saving calculator result problem
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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[android-beginners] Re: Saving calculator result problem
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 to save the 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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[android-beginners] Re: Saving
Can you explain more about what you are trying to do? On Fri, Aug 14, 2009 at 6:09 AM, RustedApple kim00...@gmail.com wrote: I am trying to understand what data is saved when I change the phone's orientation. For instance, I have a couple guys walking around and when I flip the orientation, they are still there walking. However, in a different part of code, I also spawn more guys, but this time, they wont be there when I flip the orientation. So how would one be saved while the other isn't? Thanks -- Regards, Michael Leung http://www.itblogs.info http://www.michaelleung.info --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to android-beginners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: saving data to text file using eclipse
Thank you Jack,
It works.
On Aug 11, 5:16 pm, Jack Ha jack...@t-mobile.com wrote:
Context.openFileOutput() opens a private file associated with this
Context's application package for writing and the name of the file to
open can not contain path separators.
Try this:
try {
File root = Environment.getExternalStorageDirectory();
if (root.canWrite()){
File f = new File(root, test.txt);
FileWriter fw = new FileWriter(f);
BufferedWriter out = new BufferedWriter(fw);
out.write(Hello world);
out.close();
}
} catch (IOException e) {
}
--
Jack Ha
Open Source Development Center
・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 Aug 11, 1:57 pm, Saeed saeed.pourbagh...@gmail.com wrote:
Hi everyone,
I am trying to save data to my google phone G1. I am able to create
the text file in sdcard by using the following code in eclipse :
//++
try {
FileWriter f = new FileWriter(/sdcard/test.txt);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//+
but I am not able to save any data to the created file. I found this
code from http://www.anddev.org/working_with_files-t115.html; which
says I can write to text file by running this code.
//+++
try { // catches IOException below
final String TESTSTRING = new String(hello);
FileOutputStream fOut = openFileOutput(/sdcard/test.txt,
MODE_WORLD_READABLE);
OutputStreamWriter osw = new OutputStreamWriter(fOut);
// Write the string to the file
osw.write(TESTSTRING);
// ensure that everything is
// really written out and close
osw.flush();
osw.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
//+
I run it but I do not see any change in my file.
first, I thought my problem is permission to file. The permission
setting on my phone is:
data : drwxrwx--x
sdcard : d---rwxrwx
system : drwxr-xr-x
would you please help me in either in correcting the code or finding a
way to save data into text file (saved in sdcard or the phone) in
eclipse environment
thanks in advance
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[android-beginners] Re: saving data to text file using eclipse
Context.openFileOutput() opens a private file associated with this
Context's application package for writing and the name of the file to
open can not contain path separators.
Try this:
try {
File root = Environment.getExternalStorageDirectory();
if (root.canWrite()){
File f = new File(root, test.txt);
FileWriter fw = new FileWriter(f);
BufferedWriter out = new BufferedWriter(fw);
out.write(Hello world);
out.close();
}
} catch (IOException e) {
}
--
Jack Ha
Open Source Development Center
・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 Aug 11, 1:57 pm, Saeed saeed.pourbagh...@gmail.com wrote:
Hi everyone,
I am trying to save data to my google phone G1. I am able to create
the text file in sdcard by using the following code in eclipse :
//++
try {
FileWriter f = new FileWriter(/sdcard/test.txt);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//+
but I am not able to save any data to the created file. I found this
code from http://www.anddev.org/working_with_files-t115.html; which
says I can write to text file by running this code.
//+++
try { // catches IOException below
final String TESTSTRING = new String(hello);
FileOutputStream fOut = openFileOutput(/sdcard/test.txt,
MODE_WORLD_READABLE);
OutputStreamWriter osw = new OutputStreamWriter(fOut);
// Write the string to the file
osw.write(TESTSTRING);
// ensure that everything is
// really written out and close
osw.flush();
osw.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
//+
I run it but I do not see any change in my file.
first, I thought my problem is permission to file. The permission
setting on my phone is:
data : drwxrwx--x
sdcard : d---rwxrwx
system : drwxr-xr-x
would you please help me in either in correcting the code or finding a
way to save data into text file (saved in sdcard or the phone) in
eclipse environment
thanks in advance
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[android-beginners] Re: Saving a preference isn't working
You need to get an instance of the SharedPreferences.Editor and carry out all your operations on it. Try this. SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit(); editor.putString( DrinkName , chai); editor.commit(); SharedPreferences prefs = getPreferences(MODE_PRIVATE); String favdrink = prefs.getString( DrinkName , ); //it should return chai Every call to getPreferences( MODE_PRIVATE ).edit() is returning a new instance of the SharedPreferences.Editor object which is never being committed, hence you don't see your values being saved. For more details, check out http://developer.android.com/reference/android/content/SharedPreferences.Editor.html Hope this helps, Balwinder Kaur Open Source Development Center ·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 Jun 22, 8:15 pm, bear123434...@comcast.net wrote: I have a screen where a user can enter information about a Favorite drink. I want to save it to be recalled in the current an future sessions, but the save doesn't seem to be working. Here is my code where I do the save. getPreferences( MODE_PRIVATE ).edit().putString( DrinkName , FavName); getPreferences( MODE_PRIVATE ).edit().putFloat( Volume , ( float ) AlcVol); getPreferences( MODE_PRIVATE ).edit().putFloat( Percent , ( float ) AlcPerc); getPreferences( MODE_PRIVATE ).edit().commit(); MODE_PRIVATE ).edit().putString( DrinkName , FavName); getPreferences( MODE_PRIVATE ).edit().putFloat( Volume , ( float ) AlcVol); getPreferences( MODE_PRIVATE ).edit().putFloat( Percent , ( float ) AlcPerc); getPreferences( MODE_PRIVATE ).edit().commit(); MODE_PRIVATE ).edit().putFloat( Volume , ( float ) AlcVol); getPreferences( MODE_PRIVATE ).edit().putFloat( Percent , ( float ) AlcPerc); getPreferences( MODE_PRIVATE ).edit().commit(); MODE_PRIVATE ).edit().putFloat( Percent , ( float ) AlcPerc); getPreferences( MODE_PRIVATE ).edit().commit(); MODE_PRIVATE ).edit().commit(); Here is the code where I try to retrieve the saved infromation. String strName = getPreferences( MODE_PRIVATE ).getString( DrinkName , ); float fVolume = getPreferences( MODE_PRIVATE ).getFloat( Volume , ( float ) 0.0); float fPercent = getPreferences( MODE_PRIVATE ).getFloat( Precent , ( float ) 0.0); MODE_PRIVATE ).getString( DrinkName , ); float fVolume = getPreferences( MODE_PRIVATE ).getFloat( Volume , ( float ) 0.0); float fPercent = getPreferences( MODE_PRIVATE ).getFloat( Precent , ( float ) 0.0); float fVolume = getPreferences( MODE_PRIVATE ).getFloat( Volume , ( float ) 0.0); float fPercent = getPreferences( MODE_PRIVATE ).getFloat( Precent , ( float ) 0.0); float fPercent = getPreferences( MODE_PRIVATE ).getFloat( Precent , ( float ) 0.0); When I retrieve the information, I always end up with the Default values. Does anyone have any ideas? Kevin --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to android-beginners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: Saving image to SD Card
I changed my code to :
FileOutputStream fos = new FileOutputStream(filepath + / +
filename);
This allowed me to save the image, I loaded the device using DDMS and
noticed the image had been saved. I've tried using the
MediaScannerConnection to refresh the sd card so that I can view the
image, I need some help with that..
On Apr 17, 2:17 pm, jwesonga crazylun...@gmail.com wrote:
I'm using Android SDK-1.0_rc2 on windows, I've emulated the sd card
and created on my D:\ drive as sdcard1.iso. My code for saving to the
SD card is as follows:
try
{
Log.e(filename,filename);
String filepath=Environment.getExternalStorageDirectory
().getAbsolutePath();
Log.e(FilePath,filepath);
FileOutputStream fos = openFileOutput(filepath +
filename, MODE_APPEND);
BufferedOutputStream bos = new BufferedOutputStream
(fos);
b.compress(CompressFormat.JPEG, 100, fos);
bos.flush();
bos.close();
}
When I view the Logcat I see the following error:
java.lang.IllegalArgumentException: File /sdcardobama.jpg contains a
path separator
So I changed the code to:
FileOutputStream fos = openFileOutput(filepath + / + filename,
MODE_APPEND);
The error is still occuring, so I tried to push the image using the
command:
adb push obama.jpg /sdcard/obama.jpg
I noticed 0 bytes are being pushed, any idea where I'm going wrong?
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[android-beginners] Re: Saving Files
Search for SharedPreferences class. http://code.google.com/android/reference/android/content/SharedPreferences.html Cheers. On Dec 31 2008, 4:53 am, Neelima neelima.neelu...@gmail.com wrote: Hi.. Is it possible to store application specific data in android phone. Please help if anyone knows. Thanks in advance. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to android-beginners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
