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).
Related
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())
I am new for programming and android development, I'm trying to make an app for length unit conversions. I used two spinner(from unit and to unit), so I need to check what user have selected in the both spinner and then return the value. My problem is I have got very long if statement, so I wonder if there is better solution for this.
Sorry for my poor english, I hope you understand what I mean.
here is the function for length:
public double lengthConversion() {
double res = 0.0;
num = Double.parseDouble(editTextNum.getText().toString());
// first spinner is mm, second spinner is mm
if (posFrom == 0 && posTo == 0) {
res = num;
} else if (posFrom == 0 && posTo == 1) { //second spinner is cm
res = num / 10;
} else if (posFrom == 0 && posTo == 2) { // dm
res = num / 100;
} else if (posFrom == 0 && posTo == 3) { // m
res = num / 1000;
} else if (posFrom == 0 && posTo == 4) { // km
res = num / 1000000;
}
if (posFrom == 1 && posTo == 0) {
....
} else if (posFrom == 1 && posTo == 1) {
....
} else if (posFrom == 1 && posTo == 2) {
....
} else if (posFrom == 1 && posTo == 3) {
....
} else if (posFrom == 1 && posTo == 4) {
....
}
.
.
.
if (posFrom == 4 && posTo == 0) {
...
} else if (posFrom == 4 && posTo == 1) {
...
} else if (posFrom == 4 && posTo == 2) {
...
} else if (posFrom == 4 && posTo == 3) {
...
} else if (posFrom == 4 && posTo == 4) {
...
}
return res;
}
and that is the string array I use:
<string-array name="array_length">
<item>mm</item>
<item>cm</item>
<item>dm</item>
<item>m</item>
<item>km</item>
</string-array>
In your first else if tree, posTo is really just a power of ten, so make the calculation instead of passing it through all those if else statements.
if (posFrom == 0)
res = num / Math.Pow(10, posTo);
All of your other units:
<string-array name="array_length">
<item>mm</item>
<item>cm</item>
<item>dm</item>
<item>m</item>
<item>km</item>
</string-array>
are just variations on powers of ten, so perform a further calculation adjusting your values based on the selected units (compared to a reference unit, probably meters), and you should need no more than 5 cases or if elses.
You can have an enum with the base unit (meter for instance).
Then you can have each other units (kms, mms, etc) as fields of that enum. I was going to draw up an example but there's an answer that does this well:
https://stackoverflow.com/a/17549248/447842
You can use the nested switch:
Switch(posFrom)
{
case 0 :
switch(posTo)
{
case 0: /*do*/ break;
case 1: /*do*/ break;
}
break;
case 1:
switch(postTo)
{
...
}
break;
...
default: /*how did i land here?*/
}
Sounds like you are doing unit conversion.
Now assuming pos 0 = mm, pos 1 = cm and so on.
int myFrom = posFrom;
int myTo = posTo;
if(myFrom == 4) then myFrom = 6;
if(myTo== 4) then myTo= 6;
num = res * math.pow(10, myFrom - myTo);
realize 1km = 1000000mm that's why when pos = 4, you need to change it to 6 since 10^6 = 1000000
I want to check whether the entered strings length is between 3 to 8 characters. Previously I used if condition and it worked. However when I introduced some substring from the string , one of the if statements doesnt work. Can some one help me to understand why. Thanks.
My codes is
Working Code:
text = et.getText().toString();
l = text.length();
a = text.substring(0, 1);
if (l >=9) tv.setText("Invalid length!!! Please check your code");
if (l <= 2) tv.setText("Invalid length! Please check your code");
And here, the second if statement doesnt work.
text = et.getText().toString();
l = text.length();
a = text.substring(0, 1);
c = text.substring(1, 2);
d = text.substring(3, 4);
e = text.substring(4);
if (l >=9) tv.setText("Invalid length!!! Please check your code");
if (l <= 2) tv.setText("Invalid length! Please check your code");
You will want to ensure that you handle a null string as well as ensuring your string is within the limits you want. consider:
text = et.getText().toString();
if (text == null || text.length() < 3 || text.length > 8) {
tv.setText("Invalid length, should be from 3 to 8 characters. Please check your code");
} else {
a = text.substring(0,1);
b = text.substring(1,2);
c = text.substring(3,4);
if (text.length() > 3) {
d = text.substring(4);
} else {
d = null;
}
}
You need to check the length before trying to create substrings, since if the length is too short the substring indexes are invalid. Try this:
text = et.getText().toString();
l = text.length();
if (l >= 9 || l <= 2) {
tv.setText("Invalid length!!! Please check your code");
} else {
a = text.substring(0, 1);
c = text.substring(1, 2);
d = text.substring(3, 4);
e = text.substring(4);
}
You can use like this:
editText.getText().toString().length() < 3
EditText etmobile_no;
if (etmobile_no.getText().toString("") ||
etmobile_no.getText().toString().length() <3 ||
etmobile_no.getText().toString().length() >8)
{
tv.setText("Invalid length, should be from 3 to 8 characters. Please check your code");
}
I am trying to mask the phone number as the user types. I have used the javascript code below with jquery and the setTimeout workaround successfully on android 2.x devices, but I have not found a workaround for that works for android 4.0.3.
if (navigator.userAgent.toLowerCase().indexOf("android") >= 0) {
$.fn.usphone = function() {
this.keyup(function(e) {
// do not process del, backspace, escape, arrow left and arrow right characters
var k = e.which;
if (k == 8 || k == 46 || k == 27 || k == 37 || k == 39)
return;
// remove invalid characters
var value = "";
for (var i = 0; i < this.value.length; i++) {
var ch = this.value[i];
if (ch >= "0" && ch <= "9")
value += ch;
}
// remove extra characters
if (value.length > 10)
value = value.substring(0, 10);
// insert formatting characters
if (value.length >= 3)
value = "(" + value.substring(0, 3) + ")" + value.substring(3);
if (value.length > 5)
value = value.substring(0, 5) + " " + value.substring(5);
if (value.length > 9)
value = value.substring(0, 9) + "-" + value.substring(9);
// set new value
var $this = this;
var length = value.length;
setTimeout(function() {
$this.value = value;
$this.setSelectionRange(length, length);
}, 0);
});
};
$('#contact_edit_page, #contact_new_page, #callback_create, #callback_edit, #new_phonecall_contact_page, #new_phonecall').live('pagecreate', function() {
$('[type^="tel"]').usphone();
});
}
I just met the same problem. My solution is as follows,
.input {
-webkit-user-modify: read-write;
}
It works in android 4.0.3 in my HTC.
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();
}