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Android calculator app decimal results

I'm Mikamocha, and I just started programming Android apps. I have problems in my first calculator app (the results). What I mean is so that 2+2 will be 4 instead of 4.0, 5-2 will be 3 instead of 3.0, etc.
package com.yeshua.mikamocha.myxcalculator;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private EditText Scr;
private float NumberBf=0, NumAf, result=0;
private String Operation, mod="replace";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Scr = (EditText) findViewById(R.id.txtScreen);
Scr.setText("");
int idList[] = {R.id.btn0, R.id.btn1, R.id.btn2, R.id.btn2, R.id.btn3, R.id.btn4,
R.id.btn5, R.id.btn6, R.id.btn7, R.id.btn8, R.id.btn9,
R.id.btnAdd, R.id.btnSubtract, R.id.btnMultiply, R.id.btnDivide,
R.id.btnClear,R.id.btnEquals, R.id.btnDot, };
for(int id:idList) {
View v = (View) findViewById(id);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onButtonClick(v);
}
});
}
}
public void mMath(String str) {
mResult();
try {
NumberBf = Float.parseFloat(Scr.getText().toString());
Operation = str;
}catch (Exception e) {
Toast.makeText(getApplicationContext(), (CharSequence) e, Toast.LENGTH_SHORT).show();
Scr.setText("SYNTAX ERROR");
mod = "replace";
}
}
public void mResult() {
NumAf = 0;
if(!Scr.getText().toString().trim().isEmpty())
NumAf = Float.parseFloat(Scr.getText().toString());
result = NumAf;
try {
switch (Operation) {
case "+":
result = NumAf + NumberBf;
break;
case "-":
result = NumberBf - NumAf;
break;
case "*":
result = NumAf * NumberBf;
break;
case "/":
result = NumberBf / NumAf;
break;
default:
result = NumAf;
break;
}
} catch (Exception e) {
e.printStackTrace();
}
Scr.setText(String.valueOf(result));
mod = "replace";
}
public void getKeyboard(String str) {
String ScrTxt = Scr.getText().toString();
ScrTxt += str;
if(mod.equals("add"))
Scr.setText(ScrTxt);
else
Scr.setText(str);
mod = "add";
}
public void onButtonClick(View v) {
switch (v.getId()) {
case R.id.btnClear: //Clear
Scr.setText("");
NumberBf = 0;
Operation = "";
break;case R.id.btnAdd:
mMath("+");
break;
case R.id.btnSubtract:
if(mod.equals("replace")) {
String numb = ((Button) v).getText().toString();
getKeyboard(numb);
}
else mMath("-");
break;
case R.id.btnMultiply:
mMath("*");
break;
case R.id.btnDivide:
mMath("/");
break;
case R.id.btnEquals:
mResult();
Operation = "";
NumberBf = 0;
break;
default:
String numb = ((Button) v).getText().toString();
getKeyboard(numb);
break;
}
}
}
Thanks.

You should use NumberFormat.
For example:
public static void main(String[] args) {
System.out.println(format(14.0184849945)); // prints '14.01'
System.out.println(format(13)); // prints '13'
System.out.println(format(3.5)); // prints '3.5'
System.out.println(format(3.138136)); // prints '3.13'
}
public static String format(Number n) {
NumberFormat format = DecimalFormat.getInstance();
format.setRoundingMode(RoundingMode.FLOOR);
format.setMinimumFractionDigits(0);
format.setMaximumFractionDigits(2);
return format.format(n);
}

you are using float datatype for result instead of use int type and parse operation value in int.
result = (int)(NumAf + NumberBf);

For Ref. DecimalFormat
Change as follows as you are using float as result you are getting decimal so use int,
private int result=0;
//and
result =(int) (NumAf + NumberBf);
OR
float one= 2.0;
float two= 2.5;
//DecimalFormat format = new DecimalFormat();
//format.setDecimalSeparatorAlwaysShown(false);
DecimalFormat format=new DecimalFormat("#,###.#");
System.out.println( format.format(one) );//prints 2
System.out.println( format.format(two) );//prints 2.5

Error Parsing XML response attributes with ksoap2 returns ClassCastException

I'm trying to figure out how to cast the response of the consume of a webservice, when casting the response envelope.bodyIn to my extended class object "BiometricConfigurationResponse" i'm getting this error:
java.lang.ClassCastException: org.ksoap2.serialization.SoapObject cannot be cast to org.tempuri.BiometricConfigurationResponse
The service is responding well and if i not cast it i get the dump right.
Any ideas?
This is what i'm doing:
BiometricConfigurationResponse response= null;
SoapObject obj = new SoapObject (wsNameSpace, methodName);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.implicitTypes = true;
envelope.dotNet = true;
envelope.setOutputSoapObject(obj);
envelope.addMapping(wsNameSpace, "BiometricConfigurationResponse", new BiometricConfigurationResponse().getClass());
HttpTransportSE androidHttpTransport = new HttpTransportSE(wsURL);
androidHttpTransport.debug = true;
try {
String soapAction=wsNameSpace + methodName;
androidHttpTransport.call(soapAction, envelope);
System.out.println(androidHttpTransport.requestDump);
response = (BiometricConfigurationResponse)envelope.bodyIn;
}
catch (Exception e) {
e.printStackTrace();
}
And this is my custom class
package org.tempuri;
import java.util.Hashtable;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
public final class BiometricConfigurationResponse extends SoapObject {
private int coderAlgorithm;
private int templateFormat;
private boolean juvenileMode;
private int qualityThreshold;
private boolean retryAcquisition;
private boolean acceptBadQualityEnrollment;
private boolean showQualityBar;
private boolean showQualityThreshold;
private int timeout;
private int timeoutQualityCoder;
private int enrollSecurityLevel;
private boolean securityLevelCompatibility;
private boolean liveImage;
private java.lang.String setCulture;
private int authenticationScore;
public BiometricConfigurationResponse() {
super("", "");
}
public void setCoderAlgorithm(int coderAlgorithm) {
this.coderAlgorithm = coderAlgorithm;
}
public int getCoderAlgorithm(int coderAlgorithm) {
return this.coderAlgorithm;
}
public void setTemplateFormat(int templateFormat) {
this.templateFormat = templateFormat;
}
public int getTemplateFormat(int templateFormat) {
return this.templateFormat;
}
public void setJuvenileMode(boolean juvenileMode) {
this.juvenileMode = juvenileMode;
}
public boolean getJuvenileMode(boolean juvenileMode) {
return this.juvenileMode;
}
public void setQualityThreshold(int qualityThreshold) {
this.qualityThreshold = qualityThreshold;
}
public int getQualityThreshold(int qualityThreshold) {
return this.qualityThreshold;
}
public void setRetryAcquisition(boolean retryAcquisition) {
this.retryAcquisition = retryAcquisition;
}
public boolean getRetryAcquisition(boolean retryAcquisition) {
return this.retryAcquisition;
}
public void setAcceptBadQualityEnrollment(boolean acceptBadQualityEnrollment) {
this.acceptBadQualityEnrollment = acceptBadQualityEnrollment;
}
public boolean getAcceptBadQualityEnrollment(boolean acceptBadQualityEnrollment) {
return this.acceptBadQualityEnrollment;
}
public void setShowQualityBar(boolean showQualityBar) {
this.showQualityBar = showQualityBar;
}
public boolean getShowQualityBar(boolean showQualityBar) {
return this.showQualityBar;
}
public void setShowQualityThreshold(boolean showQualityThreshold) {
this.showQualityThreshold = showQualityThreshold;
}
public boolean getShowQualityThreshold(boolean showQualityThreshold) {
return this.showQualityThreshold;
}
public void setTimeout(int timeout) {
this.timeout = timeout;
}
public int getTimeout(int timeout) {
return this.timeout;
}
public void setTimeoutQualityCoder(int timeoutQualityCoder) {
this.timeoutQualityCoder = timeoutQualityCoder;
}
public int getTimeoutQualityCoder(int timeoutQualityCoder) {
return this.timeoutQualityCoder;
}
public void setEnrollSecurityLevel(int enrollSecurityLevel) {
this.enrollSecurityLevel = enrollSecurityLevel;
}
public int getEnrollSecurityLevel(int enrollSecurityLevel) {
return this.enrollSecurityLevel;
}
public void setSecurityLevelCompatibility(boolean securityLevelCompatibility) {
this.securityLevelCompatibility = securityLevelCompatibility;
}
public boolean getSecurityLevelCompatibility(boolean securityLevelCompatibility) {
return this.securityLevelCompatibility;
}
public void setLiveImage(boolean liveImage) {
this.liveImage = liveImage;
}
public boolean getLiveImage(boolean liveImage) {
return this.liveImage;
}
public void setSetCulture(java.lang.String setCulture) {
this.setCulture = setCulture;
}
public java.lang.String getSetCulture(java.lang.String setCulture) {
return this.setCulture;
}
public void setAuthenticationScore(int authenticationScore) {
this.authenticationScore = authenticationScore;
}
public int getAuthenticationScore(int authenticationScore) {
return this.authenticationScore;
}
public int getPropertyCount() {
return 15;
}
public Object getProperty(int __index) {
switch(__index) {
case 0: return new Integer(coderAlgorithm);
case 1: return new Integer(templateFormat);
case 2: return new Boolean(juvenileMode);
case 3: return new Integer(qualityThreshold);
case 4: return new Boolean(retryAcquisition);
case 5: return new Boolean(acceptBadQualityEnrollment);
case 6: return new Boolean(showQualityBar);
case 7: return new Boolean(showQualityThreshold);
case 8: return new Integer(timeout);
case 9: return new Integer(timeoutQualityCoder);
case 10: return new Integer(enrollSecurityLevel);
case 11: return new Boolean(securityLevelCompatibility);
case 12: return new Boolean(liveImage);
case 13: return setCulture;
case 14: return new Integer(authenticationScore);
}
return null;
}
public void setProperty(int __index, Object __obj) {
switch(__index) {
case 0: coderAlgorithm = Integer.parseInt(__obj.toString()); break;
case 1: templateFormat = Integer.parseInt(__obj.toString()); break;
case 2: juvenileMode = "true".equals(__obj.toString()); break;
case 3: qualityThreshold = Integer.parseInt(__obj.toString()); break;
case 4: retryAcquisition = "true".equals(__obj.toString()); break;
case 5: acceptBadQualityEnrollment = "true".equals(__obj.toString()); break;
case 6: showQualityBar = "true".equals(__obj.toString()); break;
case 7: showQualityThreshold = "true".equals(__obj.toString()); break;
case 8: timeout = Integer.parseInt(__obj.toString()); break;
case 9: timeoutQualityCoder = Integer.parseInt(__obj.toString()); break;
case 10: enrollSecurityLevel = Integer.parseInt(__obj.toString()); break;
case 11: securityLevelCompatibility = "true".equals(__obj.toString()); break;
case 12: liveImage = "true".equals(__obj.toString()); break;
case 13: setCulture = (java.lang.String) __obj; break;
case 14: authenticationScore = Integer.parseInt(__obj.toString()); break;
}
}
public void getPropertyInfo(int __index, Hashtable __table, PropertyInfo __info) {
switch(__index) {
case 0:
__info.name = "coderAlgorithm";
__info.type = Integer.class; break;
case 1:
__info.name = "templateFormat";
__info.type = Integer.class; break;
case 2:
__info.name = "juvenileMode";
__info.type = Boolean.class; break;
case 3:
__info.name = "qualityThreshold";
__info.type = Integer.class; break;
case 4:
__info.name = "retryAcquisition";
__info.type = Boolean.class; break;
case 5:
__info.name = "acceptBadQualityEnrollment";
__info.type = Boolean.class; break;
case 6:
__info.name = "showQualityBar";
__info.type = Boolean.class; break;
case 7:
__info.name = "showQualityThreshold";
__info.type = Boolean.class; break;
case 8:
__info.name = "timeout";
__info.type = Integer.class; break;
case 9:
__info.name = "timeoutQualityCoder";
__info.type = Integer.class; break;
case 10:
__info.name = "enrollSecurityLevel";
__info.type = Integer.class; break;
case 11:
__info.name = "securityLevelCompatibility";
__info.type = Boolean.class; break;
case 12:
__info.name = "liveImage";
__info.type = Boolean.class; break;
case 13:
__info.name = "setCulture";
__info.type = java.lang.String.class; break;
case 14:
__info.name = "authenticationScore";
__info.type = Integer.class; break;
}
}
}

After several days of research i understood that WSDL autogenerated code parse Properties but not Atrributes. So what i did was this:
First i generate the stub code from my WSDL in this website: http://www.wsdl2code.com/pages/home.aspx
My webservice name is "nutriment" son when you call it in MainActivity you have to do this:
nutriment nws= new nutriment();
BiometricConfigurationResponse respuesta = nws.GetBiometricConfiguration();
Log.i(TAG, String.valueOf(respuesta.coderAlgorithm));
Log.i(TAG, String.valueOf(respuesta.templateFormat));
But it responses 0 in all cases because the WDSL stub files are parsing PROPERTIES NOT ATRIBUTES, so when you open the serialization generated file you'll got something like this:
import org.ksoap2.serialization.KvmSerializable;
import org.ksoap2.serialization.PropertyInfo;
import java.util.Hashtable;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
public class BiometricConfigurationResponse implements KvmSerializable {
public int coderAlgorithm;
public int templateFormat;
public BiometricConfigurationResponse(){}
public BiometricConfigurationResponse(SoapObject soapObject)
{
if (soapObject == null)
return;
if (soapObject.hasProperty("coderAlgorithm"))
{
Object obj = soapObject.getProperty("coderAlgorithm");
if (obj != null && obj.getClass().equals(SoapObject.class)){
SoapPrimitive j =(SoapPrimitive) obj;
coderAlgorithm = Integer.parseInt(j.toString());
}
else if (obj!= null && obj instanceof Number){
coderAlgorithm = (Integer) obj;
}
}
if (soapObject.hasProperty("templateFormat"))
{
Object obj = soapObject.getProperty("templateFormat");
if (obj != null && obj.getClass().equals(SoapPrimitive.class)){
SoapPrimitive j =(SoapPrimitive) obj;
templateFormat = Integer.parseInt(j.toString());
}else if (obj!= null && obj instanceof Number){
templateFormat = (Integer) obj;
}
}
}
#Override
public Object getProperty(int arg0) {
switch(arg0){
case 0:
return coderAlgorithm;
case 1:
return templateFormat;
}
return null;
}
#Override
public int getPropertyCount() {
return 15;
}
#Override
public void getPropertyInfo(int index, #SuppressWarnings("rawtypes") Hashtable arg1, PropertyInfo info) {
switch(index){
case 0:
info.type = PropertyInfo.INTEGER_CLASS;
info.name = "coderAlgorithm";
break;
case 1:
info.type = PropertyInfo.INTEGER_CLASS;
info.name = "templateFormat";
break;
}
#Override
public void setProperty(int arg0, Object arg1) {
}
#Override
public String getInnerText() {
// TODO Auto-generated method stub
return null;
}
#Override
public void setInnerText(String arg0) {
// TODO Auto-generated method stub
}
}
The trick is to modify the parsing so instead of get the properties(e.g.):
if (soapObject.hasProperty("coderAlgorithm")){
Object obj = soapObject.getProperty("coderAlgorithm");
if (obj != null && obj.getClass().equals(SoapObject.class)){
SoapPrimitive j =(SoapPrimitive) obj;
coderAlgorithm = Integer.parseInt(j.toString());
}
else if (obj!= null && obj instanceof Number){
coderAlgorithm = (Integer) obj;
}
}
Get the ATTRIBUTES (e.g.):
if (soapObject.hasAttribute("coderAlgorithm")) {
Object obj = soapObject.getAttribute("coderAlgorithm");
if (obj != null && obj.getClass().equals(SoapObject.class)){
SoapPrimitive j =(SoapPrimitive) obj;
coderAlgorithm = Integer.parseInt(j.toString());
}
else if (obj!= null && obj instanceof Number){
coderAlgorithm = (Integer) obj;
}
else if (obj!= null && obj instanceof String){
coderAlgorithm = Integer.parseInt(obj.toString());
}
}

ksoap2 android web services complextype byte[]

I have a web service that receives an object of complexType Pic,
Pic.java
public class Pic implements KvmSerializable{
private double latitude;
private double longitude;
private long time;
private double accuracy;
private String name;
private byte[] imageInByte;
public byte[] getImageInByte() {
return imageInByte;
}
public void setImageInByte(byte[] imageInByte) {
this.imageInByte = imageInByte;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getLatitude() {
return latitude;
}
public void setLatitude(double latitude) {
this.latitude = latitude;
}
public double getLongitude() {
return longitude;
}
public void setLongitude(double longitude) {
this.longitude = longitude;
}
public double getAccuracy() {
return accuracy;
}
public void setAccuracy(double accuracy) {
this.accuracy = accuracy;
}
public long getTime() {
return time;
}
public void setTime(long time) {
this.time = time;
}
#Override
public Object getProperty(int arg0) {
switch(arg0){
case 0:
return latitude;
case 1:
return longitude;
case 2:
return time;
case 3:
return accuracy;
case 4:
return name;
case 5:
return imageInByte;
}
return null;
}
#Override
public int getPropertyCount() {
return 6;
}
#Override
public void getPropertyInfo(int arg0, Hashtable arg1, PropertyInfo arg2) {
switch(arg0){
case 0:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "latitude";
break;
case 1:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "longitude";
break;
case 2:
arg2.type = PropertyInfo.LONG_CLASS;
arg2.name = "time";
break;
case 3:
arg2.type = Double.class;
arg2.name = "accuracy";
break;
case 4:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "name";
break;
case 5:
arg2.type = MarshalBase64.BYTE_ARRAY_CLASS;
arg2.name = "imageInBytes";
default:
break;
}
}
#Override
public void setProperty(int arg0, Object arg1) {
// TODO Auto-generated method stub
switch(arg0){
case 0:
latitude = Double.parseDouble(arg1.toString());
break;
case 1:
longitude = Double.parseDouble(arg1.toString());
break;
case 2:
time = Long.parseLong(arg1.toString());
break;
case 3:
accuracy = Double.parseDouble(arg1.toString());
break;
case 4:
name = arg1.toString();
break;
case 5:
imageInByte = Base64.decode(arg1.toString(), Base64.DEFAULT);
break;
default:
break;
}
}
}
I send it to a webservice by registering in the envelope doubles and marshalBase64. So far everything runs smoothly although in the web service once i get the object the method picture.imageInByte() returns null. I am not sure of what is happening because i could pass just a byte[] variable like this and write the file to disk. But i only passed a byte[] not a complex object with a byte[] inside.
What is the problem?

The way i solved was by altering the web service to receive 2 parameters instead of one.
like this:
public void receivePicture(Pic picture, byte[] image){
}
where picture is the information i need about the image itself and image is the actual image file.
I know this is somehow a hack and not exactly the good solution i was looking for but it works.

Can't make instance from java class

I write code for MSN application , and this application connection with server ASP.NET
this code run perfectly in my computer , but when I run this code in other computer
it is giving me runtime error in this line
new SigninPerson(s1,s2);
Error:
could not find class 'com.example.hello.Signinperson' referenced from method
com.example.hello.MainActivity.GoToProfileActivity
Code:
public class MainActivity extends Activity {
public final String URL="http://10.0.2.2:47102/ProjectTwo/Service.asmx";
public final String NAMESPACE="http://tempuri.org/";
public final String METHOD= "signin";
public final String ACTION = "http://tempuri.org/signin";
private EditText EditTextEmail;
private EditText EditTextPass;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void GoToSignupActivity (View V)
{
Intent SignupAct = new Intent("com.example.hello.SignupActivity");
startActivity(Intent.createChooser(SignupAct, "Choose an Application"));
}
public void GoToProfileActivity (View V)
{
EditTextEmail = (EditText) findViewById(R.id.Edit_Text_Email);
EditTextPass = (EditText) findViewById(R.id.Edit_Text_Pass);
if (isEmptyEditText(EditTextEmail) | isEmptyEditText(EditTextPass))
{
showDialog(0);
}
else
{
String s1 = EditTextEmail.getText().toString().trim();
String s2 = EditTextPass.getText().toString().trim();
SigninPerson SIPerson = new SigninPerson(s1,s2);
SoapObject Req = new SoapObject(NAMESPACE, METHOD);
PropertyInfo p = new PropertyInfo();
p.setName("SIPerson");
p.setValue(SIPerson);
p.setType(SIPerson.getClass());
Req.addProperty(p);
SoapSerializationEnvelope env = new SoapSerializationEnvelope(SoapSerializationEnvelope.VER11);
env.dotNet = true;
env.setOutputSoapObject(Req);
env.addMapping(NAMESPACE, "SigninPerson", new SigninPerson().getClass());
HttpTransportSE ahttp = new HttpTransportSE(URL);
SoapObject Res = null;
try
{
ahttp.call(ACTION, env);
Res = (SoapObject) env.getResponse();
}
catch (Exception ex)
{
ex.printStackTrace();
}
if (Integer.parseInt(Res.getProperty(0).toString())==0)
{
showDialog(1);
}
else
{
SIPerson.Person_Id = Integer.parseInt(Res.getProperty(0).toString());
SIPerson.F_Name = Res.getPropertyAsString(1).toString();
SIPerson.L_Name = Res.getPropertyAsString(2).toString();
SIPerson.E_Mail = Res.getPropertyAsString(3).toString();
SIPerson.Password = Res.getPropertyAsString(4).toString();
Intent ProfileAct = new Intent("com.example.hello.ProfileActivity");
ProfileAct.putExtra("ReciveLogin", SIPerson);
startActivity(Intent.createChooser(ProfileAct, "Choose an Application"));
}
}
}
public boolean isEmptyEditText (EditText ET)
{
boolean isEmpty = true;
if (ET.getText().toString().trim().length() > 0)
{
isEmpty = false;
}
return isEmpty;
}
#Override
protected Dialog onCreateDialog(int id)
{
switch (id)
{
case 0:
Dialog EnterBothDialog = new Dialog(this);
EnterBothDialog.setTitle("Please Enter Both E-Mail / Password");
return EnterBothDialog;
case 1:
Dialog InvalidEmPass = new Dialog(this);
InvalidEmPass.setTitle("Invalid Email / Password");
return InvalidEmPass;
}
return null;
}
}
and this is SigninPerson
public class SigninPerson implements KvmSerializable, Serializable {
public int Person_Id;
public String F_Name;
public String L_Name;
public String E_Mail;
public String Password;
public SigninPerson ()
{
}
public SigninPerson (int id, String Fname, String Lname, String Email, String Pass)
{
Person_Id = id;
F_Name = Fname;
L_Name = Lname;
E_Mail = Email;
Password = Pass;
}
public SigninPerson (String Email, String Pass)
{
Person_Id = 0;
F_Name = "";
L_Name = "";
}
#Override
public Object getProperty(int arg0) {
// TODO Auto-generated method stub
switch (arg0)
{
case 0:
return Person_Id;
case 1:
return F_Name;
case 2:
return L_Name;
case 3:
return E_Mail;
case 4:
return Password;
}
return null;
}
#Override
public int getPropertyCount() {
// TODO Auto-generated method stub
return 5;
}
#Override
public void getPropertyInfo(int arg0, Hashtable arg1, PropertyInfo arg2) {
// TODO Auto-generated method stub
switch (arg0)
{
case 0:
arg2.type = PropertyInfo.INTEGER_CLASS;
arg2.name = "Person_Id";
break;
case 1:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "F_Name";
break;
case 2:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "L_Name";
break;
case 3:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "E_Mail";
break;
case 4:
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "Password";
break;
default:break;
}
}
#Override
public void setProperty(int arg0, Object arg1) {
// TODO Auto-generated method stub
switch (arg0)
{
case 0:
Person_Id = Integer.parseInt(arg1.toString());
break;
case 1:
F_Name = arg1.toString();
break;
case 2:
L_Name = arg1.toString();
break;
case 3:
E_Mail = arg1.toString();
break;
case 4:
Password = arg1.toString();
break;
default:break;
}
}
}
but when I delete implements from SigninPerson and Override
public class SigninPerson{
/**
*
*/
private static final long serialVersionUID = 1L;
public int Person_Id;
public String F_Name;
public String L_Name;
public String E_Mail;
public String Password;
public SigninPerson ()
{
}
public SigninPerson (int id, String Fname, String Lname, String Email, String Pass)
{
Person_Id = id;
F_Name = Fname;
L_Name = Lname;
E_Mail = Email;
Password = Pass;
}
public SigninPerson (String Email, String Pass)
{
Person_Id = 0;
F_Name = "";
L_Name = "";
}
}
it is make new for SigninPerson and don't give me run time
I am trying to found the problem long time but I can't find any wrong
please , anyone can help me
because I must send my application in the morning

You should change this line:
SigninPerson SIPerson = null;
new SigninPerson(s1,s2);
to:
SigninPerson SIPerson = new SigninPerson(s1,s2);

It'll give you a NullPointerException as you declared a reference for the SigninPerson, but you never assigned it to a new object of this class as #SOfanatic recommended for you ( +1 for him).
SigninPerson SIPerson = null;// << here assign SIPerson to new SigninPerson
//....
p.setValue(SIPerson);
p.setType(SIPerson.getClass());

SQLite with android error

i am relatively new to programming and android,and i am working on a little notepad app. I learned how to use SQLite from a tutorial on the web,but something is wrong..when i am running the app,it keeps telling me that there are no columns in the name... but there are! what am i doing wrong? i checked the syntax a dozens of times,and i did it like the tutorial did one by one. I know this question was here before more than one time,but when reading the answers, i still couldnt find a solution to my specific problem. basically i just added 2 notes with title and text and wanted to present them in the main activity in a ListView,but nothing is showing up because of the database problem.
Help is very very appreciated :) thx in advance
this is the classes:
import java.util.ArrayList;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
public class DatabaseManager extends SQLiteOpenHelper{
private static final String DATABASE_NAME = "notesDb";
private static final int DATABASE_VERSION = 1;
private static final String TABLE_NAME = "notes";
private static final String NOTE_ID = "_id";
private static final String NOTE_TITLE = "title";
private static final String NOTE_TEXT = "text";
private static final String NOTE_CREATION_DATE = "creationDate";
public DatabaseManager(Context context){
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
String CREATE_NOTES_TABLE = "CREATE TABLE "+TABLE_NAME+"(" + NOTE_ID +" INTEGER PRIMARY KEY,"+ NOTE_TITLE + "TEXT,"
+ NOTE_TEXT + "TEXT," + NOTE_CREATION_DATE + "TEXT" + ")";
db.execSQL(CREATE_NOTES_TABLE);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS" + TABLE_NAME);
onCreate(db);
}
public void addNote(Note note){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(NOTE_TITLE, note.getTitle());
values.put(NOTE_TEXT, note.getText());
values.put(NOTE_CREATION_DATE, note.getCurrentTime());
db.insert(TABLE_NAME, null, values);
db.close();
}
public void deleteNote(Note note){
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_NAME, NOTE_ID + "?=",new String[]{String.valueOf(note.getId())} );
db.close();
}
public String[] listNotes(){
ArrayList<String> tempArray = new ArrayList<String>();
String[]notesArray = new String[0];
String sqlQuery = "SELECT * FROM " + TABLE_NAME;
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(sqlQuery,null);
if(c.moveToFirst()){
do{
tempArray.add(c.getString(c.getColumnIndex(NOTE_TITLE)));
}
while(c.moveToNext());
}
c.close();
notesArray = tempArray.toArray(notesArray);
return notesArray;
}
}
the note object:
import java.util.Calendar;
public class Note {
private int id;
private String text;
private String title;
private String creationTime;
private String currentTime;
public Note(){
}
public String getCurrentTime(){
return getDayOfMonth()+"/"+getMonth()+"/"+getYear()+" "+getDay()+", "+getHour()+":"+getMinutes();
}
public String getMonth(){
int currentMonth = Calendar.getInstance().get(Calendar.MONTH);
String month = new String();
switch(currentMonth){
case 0:
month = "01";
break;
case 1:
month = "02";
break;
case 3:
month = "04";
break;
case 4:
month = "05";
break;
case 5:
month = "06";
break;
case 6:
month = "07";
break;
case 7:
month = "08";
break;
case 8:
month = "09";
break;
case 9:
month = "10";
break;
case 10:
month = "11";
break;
case 11:
month = "12";
break;
}
return month;
}
public String getDayOfMonth(){
int currentDayOfMonth = Calendar.getInstance().get(Calendar.DAY_OF_MONTH);
String dayOfMonth = new String();
if(currentDayOfMonth<10){
dayOfMonth = "0"+currentDayOfMonth;
}
else{
dayOfMonth = ""+currentDayOfMonth;
}
return dayOfMonth;
}
public String getYear(){
String year = ""+Calendar.getInstance().get(Calendar.YEAR);
return year;
}
public String getDay(){
int currentDay = Calendar.getInstance().get(Calendar.DAY_OF_WEEK);
String day = new String();
switch(currentDay){
case 1:
day = "Sun";
break;
case 2:
day = "Mon";
break;
case 3:
day = "Tue";
break;
case 4:
day = "Wed";
break;
case 5:
day = "Thu";
break;
case 6:
day = "Fri";
break;
case 7:
day = "Sat";
break;
}
return day;
}
public String getHour(){
int currentHour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
String hour = new String();
if(currentHour<10){
hour = "0"+currentHour;
}
else{
hour = ""+currentHour;
}
return hour;
}
public String getMinutes(){
int currentMinutes = Calendar.getInstance().get(Calendar.MINUTE);
String minutes = new String();
if(currentMinutes<10){
minutes = "0"+currentMinutes;
}
else{
minutes = ""+currentMinutes;
}
return minutes;
}
public void setText(String text){
this.text = text;
}
public String getText(){
return this.text;
}
public void setTitle(String title){
this.title = title;
}
public String getTitle(){
return this.title;
}
public void setId(int id){
this.id = id;
}
public int getId(){
return this.id;
}
}
the main activity:
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DatabaseManager db = new DatabaseManager(this);
Note n1 = new Note();
Note n2 = new Note();
n1.setTitle("n1 title");
n1.setText("n1 text");
n2.setTitle("n2 title");
n2.setText("n2 text");
db.addNote(n1);
db.addNote(n2);
String[]notes = db.listNotes();
ArrayAdapter<String>adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,notes);
ListView lv = (ListView)findViewById(R.id.notes_list);
lv.setAdapter(adapter);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
and the xml file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/board"
android:scaleType="fitXY"/>
<ImageButton
android:id="#+id/add_note"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:src="#drawable/note"
android:background="#android:color/transparent"/>
<ListView
android:id="#+id/notes_list"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentTop="true"/>

A semi colon inside the query is missing for your table creation string CREATE_NOTES_TABLE string. Include a semicolon (;) inside the string just after the final ")"; ie. Make it ");";