I am new to android and java. I need help. I need to use String for a method isValid as shown below. But strings can't use the operator > and <. I am using it to restrict the user from putting invalid number which is more than 9 numbers. Thanks in advance.
package com.Elson.ProjectVersion;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class EnterContactsActivity extends Activity {
private Button saveButton;
private EditText NameEditText;
private EditText PhoneEditText;
private Button ExitButton;
private EditText EmailEditText;
private TextView date;
private int month;//private within class
private int day;
private int year;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_addcontacts);
setUpViews();
Calendar calendar =Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DAY_OF_MONTH);
Date today = calendar.getTime();
DateFormat df = DateFormat.getDateInstance(DateFormat.MEDIUM);
String cs = df.format(today);
date.setText(cs);
}
public void saveClickHandler(View v){
String ContactsScore;
ContactsScore= NameEditText.getText().toString();
String name = String.format(ContactsScore);
ContactsScore= PhoneEditText.getText().toString();
String Phone = String.format(ContactsScore);
Log.d("EnterContacts" , "I hear the Save Button");
if ( isValid(Phone) ){
Contacts contacts;
Date dateofGames= new GregorianCalendar(year,month,day).getTime();
contacts = new Contacts (name , Phone , dateofGames);
ContactsActivityApplication app = (ContactsActivityApplication) getApplication();
//might be wrong
Log.d("DeBUGGING", "app is this type: " + app.getClass().getName());
//need add the function addBowlingScores
app.addallContacts(contacts);
Toast.makeText(getApplicationContext(), "Your Contact has been Saved!", Toast.LENGTH_SHORT).show();
}
if( name == null) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Please enter your name")
.setMessage("Phone numbers cannot have more than 8 numbers")
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
//error is here
private boolean isValid() {
if (Phone > 0 && Phone < 100000000)
return true;
return false;
// TODO Auto-generated method stub
}
private void setUpViews()
{
ExitButton = (Button) findViewById(R.id.BtnExit);
saveButton =(Button) findViewById(R.id.BtnSave);
NameEditText= (EditText) findViewById(R.id.NameEditText);
PhoneEditText= (EditText) findViewById(R.id.PhoneEditText);
EmailEditText= (EditText) findViewById(R.id.EmailEditText);
date = (TextView) findViewById(R.id.DateTextView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.addcontacts, menu);
return true;
}
}
Contacts
package com.Elson.ProjectVersion;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
public class Contacts implements Comparable<Contacts> {
private long id;
private String name;
private String Phone;
private int Email;
private Date date;
private double runningAverage;
public Contacts(String name, String Phone, Date date) {
this.name = name;
this.Phone = Phone;
this.date = null;
}
public Contacts(long id, String name,String Phone) {
this.id=id;
this.Phone=Phone;
this.name= (name);
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getPhone() {
return Phone;
}
public void setPhone(String Phone) {
this.Phone = Phone;
}
public String getname() {
return name;
}
public void setname(String name) {
this.name = name;
}
public Date getDate() {
return null;
}
public long getDateEpoch(){
return date.getTime()/1000;
}
public void setDateEpoch(long seconds){
date= new Date (seconds*1000);
}
public void setDate(Date date) {
this.date = date;
}
public void setRunningAverage(double runningAverage) {
this.runningAverage = runningAverage;
}
public boolean equals(Object that){
Contacts bs = (Contacts) that;
return this.date.equals(bs.date);
}
@Override
public String toString() {
String result;
if(date != null) {
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
result = df.format(date) + "" + name + "" + Phone ;
}
else {
result = name + "" + Phone ;
}
return result;
}
@Override
public int compareTo(Contacts another) {
// TODO Auto-generated method stub
return 0;
}
}