Develop Reference

RxJava combineLatest - observable from changes

I create form with 15 inputs and I want observe those inputs to check if something was changed, I compare results of inputs with current userModel. How can I reduce that code because seems to be little bit complicated. It looks like that:
Observable.combineLatest(fieldsViewHolder.observableInputsChanges(), new FuncN<Boolean>() {
#Override
public Boolean call(Object... args) {
if(userModel != null) {
return args[0].toString().equals(userModel.getFirstName()) && args[1].toString().equals(userModel.getLastName()) && args[2].toString().equals(userModel.getEmail()) &&
args[3].toString().equals(userModel.getMobilePhone()) && args[4].toString().equals(userModel.getCompanyPlace()) && args[5].toString().equals(userModel.getCompanyName()) &&
args[6].toString().equals(userModel.getCountry()) && args[7].toString().equals(userModel.getCompanyPosition()) && args[8].toString().equals(userModel.getPhone()) &&
args[9].toString().equals(userModel.getPostalCode()) && args[10].toString().equals(userModel.getStreet1()) && args[11].toString().equals(userModel.getStreet2()) &&
args[12].toString().equals(userModel.getFirstName()) && args[13].toString().equals(userModel.getWebPage()) && args[14].toString().equals(userModel.getCity());
}
return args[0].toString().isEmpty() && args[1].toString().isEmpty() && args[2].toString().isEmpty() &&
args[3].toString().isEmpty() && args[4].toString().isEmpty() && args[5].toString().isEmpty() &&
args[6].toString().isEmpty() && args[7].toString().isEmpty() && args[8].toString().isEmpty() &&
args[9].toString().isEmpty() && args[10].toString().isEmpty() && args[11].toString().isEmpty() &&
args[12].toString().isEmpty() && args[13].toString().isEmpty() && args[14].toString().isEmpty();
}
});

you can create UserModel object with constructor (pass all args to it)
in constructor map every args to field you want. now you have another UserModel.
you can compare them by overriding equal for UserModel or you can convert them with Gson and compare String! I prefer first solution.
Update
for empty lines that you add after edit you can check like this:
for(int i = 0; i < 15; i++){
if(!args[i].toString().isEmpty()) {
return false;
}
}
return true;

How to set text for password field via uiautomator

I can't set text for password field via uiautomator:
UiObject eaPassword = uiDevice.findObject(new UiSelector().textContains("Password"));
assertTrue(eaPassword.waitForExists(35_000));
eaPassword.click(); // optional
eaPassword.setText("1234"); // return true
It is able to find the object itself.
If I execute eaPassword.getText(); it returns "Password".

If you run eaPassword.click() , screen would be change(keyboard pop up),
so you cannot find eaPassword(Uiobject) again
setText() this function has two behavior
1. Long press EditView
2. Input text
UiObject eaPassword = uiDevice.findObject(new UiSelector().textContains("Password"));
assertTrue(eaPassword.waitForExists(35_000));
eaPassword.setText("1234");
or try other method
UiObject eaPassword = uiDevice.findObject(new UiSelector().textContains("Password"));
assertTrue(eaPassword.waitForExists(35_000));
eaPassword.click();
setStrings("test");
public void setStrings(String text) {
for (int i = 0; i < text.length(); i++) {
char c = text.charAt(i);
if (c >= 48 && c <= 57) // 0~9
uiDevice.pressKeyCode(c - 41);
else if (c >= 65 && c <= 90) // A~Z
uiDevice.pressKeyCode(c - 36, 1);
else if (c >= 97 && c < 122) // a~z
uiDevice.pressKeyCode(c - 68);
else if (c == 42) // *
uiDevice.pressKeyCode(KEYCODE_STAR);
else if (c == 35) // #
uiDevice.pressKeyCode(KEYCODE_POUND);
else if (c == 46) // .
uiDevice.pressKeyCode(KEYCODE_PERIOD);
else if (c == 47) // /
uiDevice.pressKeyCode(KEYCODE_SLASH);
else if (c == 58) // :
uiDevice.pressKeyCode(KEYCODE_SEMICOLON);
}
}
It would be one by one to input word (not use setText())

how to fix divide by zero in android

it is not WORKING !!
I have used different methods to solve the case but did not work
Anyone who can help me?
..............................................................................
case '/':
pp = Double.parseDouble(text.getText().toString());
if (sss == '/') {
if (Double.parseDouble(text.getText().toString()) == 0.0 ||Integer.parseInt(text.getText().toString()) == 0) {
text.setText("");
text2.setText("");
Toast.makeText(getBaseContext(), "Cannot divide by zero", Toast.LENGTH_SHORT).show();
} else if (pp != 0 || pp != 0.0) {
vis = tt / pp;
temp = (int) vis;
if (vis == temp) {
text.setText(Integer.toString(temp));
} else {
text.setText(Double.toString(vis));
}
vis = 0;
ash = 0;
break;
}
}

Dividing a floating point value by zero is not an error, the result just becomes infinity. Check the result after the division:
case '/':
pp = Double.parseDouble(text.getText().toString());
if (sss == '/') {
vis = tt / pp;
if (Double.isInfinite(vis)) {
text.setText("");
text2.setText("");
Toast.makeText(getBaseContext(), "Cannot divide by zero", Toast.LENGTH_SHORT).show();
} else {
temp = (int) vis;
if (vis == temp) {
text.setText(Integer.toString(temp));
} else {
text.setText(Double.toString(vis));
}
vis = 0;
ash = 0;
break;
}
}

Don't make your code so complex. Use just Double variable as in division you need answer to certain precision.Also there is problem with division operation with double type variables as they don't throw Arithmetic exception.E.g.:
0/0 - generates ArithmeticException
1.0/0 - generates output NaN(infinite)
It seams that "pp" is of double type.
So write some thing like this:
double tt=Double.parseDouble(textView1.getText().toString().trim());
double pp=Double.parseDouble(textView2.getText().toString().trim());
if(pp!=0){
x=tt/pp;
System.out.println(" res :"+x);
}else{
//you logic if pp is 0
}
Avoid computation if denominator is zero by using simple check(denominator==0) or keep as it so that when denominator is zero it shows result NaN(infinite).

Encrypted text comes out wrong

Hi I have some code which encrypts a text and display it in a textView and send it as an SMS.
The algorithm is (letterInt * constant)%29 = new letterInt
so basically it is the leftovers of division of 29 on the letter value times the constant
The alphabet is like this
private List<Character> alfabet = new ArrayList<Character>();
alfabet.add('a');
alfabet.add('b');
alfabet.add('c');
alfabet.add('d');
alfabet.add('e');
alfabet.add('f');
alfabet.add('g');
alfabet.add('h');
alfabet.add('i');
alfabet.add('j');
alfabet.add('k');
alfabet.add('l');
alfabet.add('m');
alfabet.add('n');
alfabet.add('o');
alfabet.add('p');
alfabet.add('q');
alfabet.add('r');
alfabet.add('s');
alfabet.add('t');
alfabet.add('u');
alfabet.add('v');
alfabet.add('w');
alfabet.add('x');
alfabet.add('y');
alfabet.add('z');
alfabet.add('æ');
alfabet.add('ø');
alfabet.add('å');
The problem is, that whenever C becomes larger than 1 the text isnt encrypted corretly.
e.g. d = 4, but if i choose C = 4 then the output becomes h (8), not p (16).
The code part is like this:
char[] bogstaver = tekstString.toCharArray();
for (int i = 1; i <= bogstaver.length; i++) {
if (bogstaver[i-1] == ' ' || bogstaver[i-1] == '.' || bogstaver[i-1] == '?' || bogstaver[i-1] == '!' ||
bogstaver[i-1] == ',' || bogstaver[i-1] == ';' || bogstaver[i-1] == '+' || bogstaver[i-1] == '(' ||
bogstaver[i-1] == ')' || bogstaver[i-1] == '{' || bogstaver[i-1] == '}' || bogstaver[i-1] == ':'){
continue;
}
if( CType == 1){
C = Integer.valueOf(faktorA);
CType = 2;
}
else if (CType == 2){
C = Integer.valueOf(faktorB);
CType = 3;
}
else if (CType == 3){
C = Integer.valueOf(faktorE);
CType = 1;
}
bogstaver[i-1] = alfabet.get((alfabet.indexOf(bogstaver[i-1]) * C)%29);
}
String endeligeTekst = new String(bogstaver);
if (k == 1){
krypteredeTekst.setText(endeligeTekst);
}
else{
sendString(endeligeTekst, Nr);
}

This is why you're not getting the result you're expecting;
e is the 4th value in your List (it's 0 indexed, a=0, b=1 etc.
With C=3, the result is 4*3=12, and the 13'th character (at index 12) is m which is the output (I can't get n as your question states).

cannot compare if more or less than the current time Calendar.MONTH

I'm trying here check the date to put the appropriate separator, but the problem is that when comparing the Calendar.Months, and the other checks work fine
if (calendar.get(Calendar.DAY_OF_YEAR) > Calendar.getInstance().get(Calendar.DAY_OF_YEAR) && calendar.get(Calendar.YEAR) > Calendar.getInstance().get(Calendar.YEAR) ||
(calendar.get(Calendar.DAY_OF_YEAR) < Calendar.getInstance().get(Calendar.DAY_OF_YEAR) && calendar.get(Calendar.YEAR) > Calendar.getInstance().get(Calendar.YEAR)) ||
(calendar.get(Calendar.DAY_OF_YEAR) == Calendar.getInstance().get(Calendar.DAY_OF_YEAR) && calendar.get(Calendar.YEAR) > Calendar.getInstance().get(Calendar.YEAR))||
(calendar.get(Calendar.DAY_OF_YEAR) == Calendar.getInstance().get(Calendar.DAY_OF_YEAR) && calendar.get(Calendar.MONTH) > Calendar.getInstance().get(Calendar.MONTH)&&calendar.get(Calendar.YEAR) == Calendar.getInstance().get(Calendar.YEAR)))
{
newTask.setDateStatus(ModelSeparator.TYPE_FUTURE);
if (!adapter.containsSeparatorFuture) {
adapter.containsSeparatorFuture = true;
separator = new ModelSeparator(ModelSeparator.TYPE_FUTURE);
Toast.makeText(getActivity(),"Future",Toast.LENGTH_SHORT).show();
}