Question 1: Presumingly i wanted to allocate only 1GB of space to store my videos in a particular self declared directory how should i do it?
Question 2: And i wanted my directory to capped at 1GB after which how is it going to auto-delete the oldest video file in that directory once its about to reach 1GB?
Sorry i'm kinna new in java and android and currently creating an car blackbox app can someone help me... Thanks
This is what I have tried so far can someone tell me how should i implement the above function into my mainActivity:
Code:
public class CameraTest extends Activity implements SurfaceHolder.Callback {
private static final String TAG = "Exception";
public static SurfaceView surfaceView;
public static SurfaceHolder surfaceHolder;
public static Camera camera;
public static boolean previewRunning;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
surfaceView = (SurfaceView)findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Button btnStart = (Button) findViewById(R.id.button4);
btnStart.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
startService(new Intent(getApplicationContext(), ServiceRecording.class));
}
});
Button btnStop = (Button) findViewById(R.id.button5);
btnStop.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
stopService(new Intent(getApplicationContext(), ServiceRecording.class));
}
});
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
camera = Camera.open();
if (camera != null) {
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
}
else {
Toast.makeText(getApplicationContext(), "Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (previewRunning) {
camera.stopPreview();
}
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(320, 240);
p.setPreviewFormat(PixelFormat.JPEG);
camera.setParameters(p);
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
}
catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
@Override
public void onResume(){
super.onResume();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder){
camera.stopPreview();
previewRunning = false;
camera.release();
}
}
My RecordingService.java Service file
Code:
public class ServiceRecording extends Service {
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private Camera camera;
private boolean recordingStatus;
private MediaRecorder mediaRecorder;
private final int maxDurationInMs = 20000;
private static final String TAG = "Exception";
@Override
public void onCreate() {
super.onCreate();
recordingStatus = false;
camera = CameraTest.camera;
surfaceView = CameraTest.surfaceView;
surfaceHolder = CameraTest.surfaceHolder;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
if (recordingStatus == false)
startRecording();
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
stopRecording();
//camera.stopPreview();
recordingStatus = false;
//camera.release();
}
public boolean startRecording(){
try {
Toast.makeText(getBaseContext(), "Recording Started", Toast.LENGTH_SHORT).show();
try{
camera.unlock();
}
catch(Exception e){
camera.reconnect();
}
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mediaRecorder.setMaxDuration(maxDurationInMs);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
//mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH_mm_ss");
Date date = new Date();
File directory = new File(Environment.getExternalStorageDirectory() + "/VideoList");
if(!(directory.exists()))
directory.mkdir();
File FileSaved = new File(Environment.getExternalStorageDirectory() + "/VideoList", dateFormat.format(date) + ".3gp");
mediaRecorder.setOutputFile(FileSaved.getPath());
mediaRecorder.setVideoSize(surfaceView.getWidth(),surfaceView.getHeight());
//mediaRecorder.setVideoFrameRate(videoFramesPerSecond);
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
mediaRecorder.prepare();
mediaRecorder.start();
recordingStatus = true;
return true;
}
catch (IllegalStateException e) {
Log.d(TAG,e.getMessage());
e.printStackTrace();
return false;
}
catch (IOException e) {
Log.d(TAG,e.getMessage());
e.printStackTrace();
return false;
}
}
public void stopRecording() {
Toast.makeText(getBaseContext(), "Recording Stopped", Toast.LENGTH_SHORT).show();
mediaRecorder.stop();
try {
camera.reconnect();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recordingStatus = false;
}
}
Anyone can help please...
I've tried my best to do my coding but i'm really in a desperate bit to get some help from you guys here... Could someone please help me, not that i'm lazy or what to do the coding myself but its just that i'm really bad in programming and new to android but yet force to do this project so decided to ask for help from you guys here...
I found this online but it seems that it answer part of my question isn't it but i don't seem to know how to integrate it into my codes... Can someone help me with this problem?
Code:
private static long dirSize(File dir) {
long result = 0;
Stack<File> dirlist= new Stack<File>();
dirlist.clear();
dirlist.push(dir);
while(!dirlist.isEmpty())
{
File dirCurrent = dirlist.pop();
File[] fileList = dirCurrent.listFiles();
for (int i = 0; i < fileList.length; i++) {
if(fileList[i].isDirectory())
dirlist.push(fileList[i]);
else
result += fileList[i].length();
}
}
return result;
}
Could someone guide me along with the above codes??
Hi i am new to android developing. I don't know is this the right section to post but i really need help on this. My app is a remote control and and it has to send strings to the server (PC) by clicking the buttons. Somehow my app crashes when i click the button . I cant figure out the problem. Can anyone help me please?? .
here I'm pasting the code:
Code:
public class MyAppActivity extends Activity {
/** Called when the activity is first created. */
Button mButton;
EditText mEdit;
TextView mTextView;
String ip;
Socket s;
InputStream is;
InputStreamReader isr;
BufferedReader br;
DataOutputStream os;
//PrintWriter pw;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.addip);
mButton = (Button) findViewById(R.id.button1);
mEdit = (EditText) findViewById(R.id.editText1);
mTextView = (TextView) findViewById(R.id.tConnectStatus);
mButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String ip = mEdit.getText().toString();
try {
s = new Socket(ip, 2222);
is = s.getInputStream();
isr = new InputStreamReader(is);
br = new BufferedReader(isr);
os = new DataOutputStream(s.getOutputStream());
//pw = new PrintWriter(os, true);
// s.close();
} catch (Exception ex) {
// System.out.println(ex);
CharSequence statusMesg = "Please Enter the Correct IP ";
mTextView.setText(statusMesg);
}
// Wificlient conState = new Wificlient();
if (s.isConnected()) {
CharSequence statusMesg = "Connected";
mTextView.setText(statusMesg);
Intent startAcontroller = new Intent(
"my.hasham.joy.app.ACONTROLLER");
startActivity(startAcontroller);
} else {
CharSequence statusMesg = "Please Enter the Correct IP ";
mTextView.setText(statusMesg);
// finish();
}
// Intent startAcontroller = new
// Intent("my.hasham.joy.app.ACONTROLLER");
// startActivity(startAcontroller);
}
});
}
public void sendForward(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendBackward(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendLeft(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendRight(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendStart(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendSelect(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendB(String cmd) throws IOException {
os.writeUTF(cmd);
}
public void sendA(String cmd) throws IOException {
os.writeUTF(cmd);
}
}
and the other activity:
Code:
public class Acontroller extends Activity {
Button bForward;
Button bBackward;
Button bRight;
Button bLeft;
Button bSelect;
Button bStart;
Button bB;
Button bA;
public MyAppActivity command = new MyAppActivity();
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.nesskin);
bForward = (Button) findViewById(R.id.bForward);
bBackward = (Button) findViewById(R.id.bBackward);
bRight = (Button) findViewById(R.id.bRight);
bLeft = (Button) findViewById(R.id.bLeft);
bSelect = (Button) findViewById(R.id.bSelect);
bStart = (Button) findViewById(R.id.bStart);
bA = (Button) findViewById(R.id.bA);
bB = (Button) findViewById(R.id.bB);
bForward.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
try {
command.sendForward("forward");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bBackward.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendBackward("backward");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bLeft.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendLeft("Left");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bRight.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendRight("right");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bSelect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendSelect("select");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendStart("start");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bA.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendA("a");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
bB.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// MyAppActivity command = new MyAppActivity();
try {
command.sendB("b");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
Please if anyone can help me . I really need to get this done.
I'm building a complete build of Android with tropo: (Google tropo)
Here's my tropo hosted script in javascript:
Code:
if (typeof number == 'undefined') {//IF the call doesn't come from me (there's no variable set)
var callerId=currentCall.callerID;
var textmessage=currentCall.initialText
hangup()
call('(Put your phone number Here', {network: 'SMS'});
//Analyse message and format it for sending
var message = new Array();
var nbMessages=((textmessage.length())/149) ;//.length() ????? why????
var i=0;
for(i=0;i<nbMessages;i++){
message[i]=callerId+textmessage.substr(i*149,149);
say(message[i]);
wait(1000);
}
hangup()
}
else //SENDING PART:number and text are parameters
{
call(number, {network:"SMS"});
say(text);
}
I've used the CM9 source code for the galaxy s2 that I downloaded and builded following this guide: (Google teamhacksung CyanogenMod9 How to build)
For sending, I simply post an HTTP Post request to my tropo app
Here's the code
I modified the SMSManager.java class in android.telephony package
Code:
public void sendTextMessage(
String destinationAddress, String scAddress, String text,
PendingIntent sentIntent, PendingIntent deliveryIntent) {
if (TextUtils.isEmpty(destinationAddress)) {
throw new IllegalArgumentException("Invalid destinationAddress");
}
if (TextUtils.isEmpty(text)) {
throw new IllegalArgumentException("Invalid message body");
}
/* OLD METHOD FOR SMS BY CARRIER
try {
ISms iccISms = ISms.Stub.asInterface(ServiceManager.getService("isms"));
if (iccISms != null) {
iccISms.sendText(destinationAddress, scAddress, text, sentIntent, deliveryIntent);
}
} catch (RemoteException ex) {
// ignore it
}*/
//My new Method via tropo
//Création de l'objet Tropo SMS
TropoSms sms = new TropoSms(destinationAddress, text, sentIntent,deliveryIntent);
sms.send();
}
/**/
public void sendMultipartTextMessage(
String destinationAddress, String scAddress, ArrayList<String> parts,
ArrayList<PendingIntent> sentIntents, ArrayList<PendingIntent> deliveryIntents) {
if (TextUtils.isEmpty(destinationAddress)) {
throw new IllegalArgumentException("Invalid destinationAddress");
}
if (parts == null || parts.size() < 1) {
throw new IllegalArgumentException("Invalid message body");
}
if (parts.size() > 1) {
/*//OLD METHOD FOR SMS CARRIER
try {
ISms iccISms = ISms.Stub.asInterface(ServiceManager.getService("isms"));
if (iccISms != null) {
iccISms.sendMultipartText(destinationAddress, scAddress, parts,
sentIntents, deliveryIntents);
}
} catch (RemoteException ex) {
// ignore it
}*/
//My tropo Method
for(int i=0; i< parts.size();i++){
TropoSms sms = new TropoSms(destinationAddress, parts.get(i), sentIntents.get(i),deliveryIntents.get(i));
sms.send();
}
} else {
PendingIntent sentIntent = null;
PendingIntent deliveryIntent = null;
if (sentIntents != null && sentIntents.size() > 0) {
sentIntent = sentIntents.get(0);
}
if (deliveryIntents != null && deliveryIntents.size() > 0) {
deliveryIntent = deliveryIntents.get(0);
}
sendTextMessage(destinationAddress, scAddress, parts.get(0),
sentIntent, deliveryIntent);
}
}
Here I created the Tropo SMS class in the android.telephony.tropo package
Code:
/**
*
*/
package android.telephony.tropo;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpConnectionParams;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.PendingIntent;
import android.app.PendingIntent.CanceledException;
import android.telephony.SmsManager;
/**
* @author kevmegforest
*
*/
public class TropoSms {
protected String destinationAddress="Undefined";
protected String message="Undefined";
protected PendingIntent sentIntent;
protected PendingIntent deliveryIntent;
private static String token="1...4c";
public TropoSms(){
}
public TropoSms(String sendAddress, String text, PendingIntent sendIntent, PendingIntent deliverIntent){
destinationAddress=sendAddress;
message=text;
sentIntent=sendIntent;
deliveryIntent=deliverIntent;
}
/**------------------------------------------
* SETTERS AND GETTERS
* @return
*/
public String getDestinationAddress() {
return destinationAddress;
}
public String getMessage() {
return message;
}
//--------------------------------------------------
/**
* Methods
*/
public void send(){ //Success return true //Fail return false
boolean success=true;
this.message=manageText();
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); //Timeout Limit
HttpResponse response;
HttpPost post = new HttpPost("https://api.tropo.com/1.0/sessions");
//Creating JSON object
JSONObject json= new JSONObject();
try {
json.put("token", token);
json.put("number", this.destinationAddress );
json.put("text", this.message);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
success=false;
}
try {
StringEntity se = new StringEntity(json.toString());
post.setEntity(se);
//Post headers Setup
post.addHeader("accept", "application/json");
post.addHeader("content-type","application/json");
response=client.execute(post);
//Checking response
//HOW TO
if(response.getStatusLine().getStatusCode() !=200)
success=false;
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
success =false;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
success=false;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
success=false;
}
this.manageIntent(success);
client.getConnectionManager().shutdown();//Ending connection
}
private void manageIntent(boolean sendsuccess)
{
if(sendsuccess)
{
try {
this.sentIntent.send(Activity.RESULT_OK);
} catch (CanceledException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
try {
this.sentIntent.send(SmsManager.RESULT_ERROR_GENERIC_FAILURE);
} catch (CanceledException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private String manageText()
{
String correctedText=this.message;//The last character in each table is the one to replace with
char characterToReplaceA[]={'à','â','ä','a'};
char characterToReplaceC[]={'ç','c'};
char characterToReplaceE[]={'é','è','ê','ë','e'};
char characterToReplaceI[]={'ì','î','ï','i'};
char characterToReplaceO[]={'ò','ô','ö','o'};
char characterToReplaceU[]={'ù','û','ü','u'};
char characterToReplace[][]={characterToReplaceA,characterToReplaceC,characterToReplaceE,characterToReplaceI,characterToReplaceO,characterToReplaceU};
for(int i=0;i<characterToReplace.length;i++){
for(int j=0;j<(characterToReplace[i].length-1);j++){
correctedText=correctedText.replace(characterToReplace[i][j],characterToReplace[i][characterToReplace[i].length-1]);
correctedText=correctedText.replace(Character.toUpperCase(characterToReplace[i][j]),Character.toUpperCase(characterToReplace[i][characterToReplace[i].length-1]));
}
}
return correctedText;
}
}
The sending part works really well. Since it's an API change I can use any SMS App in android and it would work.
But I have a problem with receiving.
My tropo script can only modify the body message of the sms. So when someone send a SMS message to tropo, I prefixed the body message with 10 characters representing it's phone number like this:
original message: "Hello"
new message:"15551231234Hello"
I then send this message to my phone
The modified class SubmitPdu in android.telephony package in the SMSMessage.java file
It's wherethe SMS app get the sms with the createfrompdu() method
Code:
public static SmsMessage createFromPdu(byte[] pdu, String format) {
SmsMessageBase wrappedMessage;
if (FORMAT_3GPP2.equals(format)) {
wrappedMessage = com.android.internal.telephony.cdma.SmsMessage.createFromPdu(pdu);
} else if (FORMAT_3GPP.equals(format)) {
wrappedMessage = com.android.internal.telephony.gsm.SmsMessage.createFromPdu(pdu);
} else {
Log.e(LOG_TAG, "createFromPdu(): unsupported message format " + format);
return null;
}
//Verify here if it comes from TROPO
Log.d("SMSNumberCompare", "Original number:"+wrappedMessage.getOriginatingAddress());
Log.d("SMSNumberCompare", "Tropo number:"+TropoSmsReceiver.TROPO_APP_PHONE_NUMBER);
if(PhoneNumberUtils.compare(wrappedMessage.getOriginatingAddress(), TropoSmsReceiver.TROPO_APP_PHONE_NUMBER)){
Log.d("SMSNumberCompare", "Comparison:"+(PhoneNumberUtils.compare(wrappedMessage.getOriginatingAddress(), TropoSmsReceiver.TROPO_APP_PHONE_NUMBER)));
//Creating TropoReceive Object
TropoSmsReceiver tropo = (TropoSmsReceiver) wrappedMessage; //Downcasting
tropo.formatFromTropo();
//upcasting
wrappedMessage=tropo;
}
return new SmsMessage(wrappedMessage);
}
And here's my TropoSmsReceiver Class which extends the SmsMessageBase class
Code:
package com.android.internal.telephony.tropo;
import android.telephony.PhoneNumberUtils;
import android.telephony.SmsMessage.MessageClass;
import android.util.Log;
import com.android.internal.telephony.SmsMessageBase;
public class TropoSmsReceiver extends SmsMessageBase {
public final static String TROPO_APP_PHONE_NUMBER="###########";
//My new Methods
//this method will format the text to get the parameters transferred from the tropo text
public void formatFromTropo(){
Log.d("TropoFormat", "old address"+this.originatingAddress.address);
this.originatingAddress.address=PhoneNumberUtils.formatNumber(this.messageBody.substring(0, 10), PhoneNumberUtils.FORMAT_NANP );
Log.d("TropoFormat", "new address"+this.originatingAddress.address);
this.messageBody=this.messageBody.substring(11);
Log.d("TropoFormat", "new Body"+this.messageBody);
}
@Override
public MessageClass getMessageClass() {
// TODO Auto-generated method stub
return null;
}
@Override
public int getProtocolIdentifier() {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean isReplace() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isCphsMwiMessage() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isMWIClearMessage() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isMWISetMessage() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isMwiDontStore() {
// TODO Auto-generated method stub
return false;
}
@Override
public int getStatus() {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean isStatusReportMessage() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isReplyPathPresent() {
// TODO Auto-generated method stub
return false;
}
}
The interesting part is my new method formatFromTropo()
But I have a problem, it doesn't work.
It builds sucessfully
In the logcat, the debug log says it goes in the if statement (it says Comparison: true and it's placement is in the if)
But when the tropo.formatFromTropo() is called the catlog has no mention of any log declared in the TropoSmsReceiver File. How is that possible? Can you help me?
It's my first android project (app or android Source change) and java project so you can give me many recommendations(and comments) too.
Thank you
I just released my first update for my app, and apparently it wiped all data from each person's app as if it was a fresh install. There are list objects primarily that are stored with a FileInputStream as shown in the code and the settings are stored with SharedPreferences. Does anyone know how to make it where each time I update, these don't dissappear? Thanks!
Code:
public ObjectStorage readListFromFile()
{
ObjectStorage temp = null;
String filename = "storefileobj";
FileInputStream fis;
try {
fis = getActivity().openFileInput(filename);
ObjectInputStream is = new ObjectInputStream(fis);
temp = (ObjectStorage) is.readObject();
is.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (StreamCorruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return temp;
}
public void updateStorage()
{
String filename = "storefileobj";
FileOutputStream fos;
try {
fos = getActivity().openFileOutput(filename, Context.MODE_PRIVATE);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(mainObjectList);
os.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
When I am starting Stack activity a blank page is being displayed, so could you please help me out.
public class Stack extends Activity {
LinearLayout linear;
ScrollView scroll;
@override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
scroll = new ScrollView(this);
linear = new LinearLayout(this);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
linear.setLayoutParams(lp);
linear.setOrientation(LinearLayout.HORIZONTAL);
scroll.setLayoutParams(lp);
linear.addView(new AnimateNode(this));
scroll.addView(linear);
setContentView(scroll);
}
public class AnimateNode extends View {
public AnimateNode(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
@override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
Paint paint = new Paint();
paint.setStyle(Style.STROKE);
paint.setPathEffect(new DashPathEffect(new float[] { 10, 20 }, 0));
canvas.drawLine(0, 10, 200, 10, paint);
}
}
}
Hello,
Please post your question here:
http://forum.xda-developers.com/general/help
The members there will be able to help you, good luck.