Im trying to have an edittext which would prompt a keyboard to pop-up when the user selects the edit text. When the user starts typing, it should fill the edittext with the keystrokes that the user puts in... but once a boolean value changes, then the keystrokes that get put will be different than what the user puts in.
If the boolean value is changed, then typing any key in the edittext updates will update, and lets say a "x" gets put in place instead of pressing "z".
The way that I can see about cracking this would be a lengthy keyUp() method that includes ALL keys and puts in their "x" when they get pressed if the boolean is true. Are there any methods or suggestions as to what I could do insead of the lengthy keyUp method. The keyup method doesn't work with
The boolean method that would change would start when a "." gets pressed in the edit test.
Take a look at the TextWatcher class. It will allow you to intercept and manipulate user inputs as appropriate (depending on your boolean flag's value) as each character is entered. You can set a TextWatcher on an EditText using the addTextChangedListener method.
Related
There are 20 JTextField and one calculate button in panel.
after entering data to text field and I click button, program calculate as well.
What I want to do, after first click for button, is there any updates in any text fields, button colors should be change as green (it means you have to know something already change and you have to calculate again).
How can I proceed with that, should I put action listener for each text field or any other short code exist?
Your question is not clear. As far my concern to yr question you can track button click event and put code there for check jtextfield value and on the bases of value you can take decision to change the color of the button
Let me start by saying that I am using the standard buttons.
When you push the button, my program performs a method, and until it does, the looks on down. I would like to change the text in the button when this method is performed, after I would like to have a text as the beginning.
Do I need to encode something? Whether enough suitable property in xml?
This is easily achieved.
First initiate
private Button btn1;
then assign
btn1 = (Button) findviewById(R.id.//id_name_of_your_button);
now add an Onclicklisenere
btn1.setOnclickListener(new OnClick....
when clicking on your button change text or add any other value around
btn1.setText("patrick1980 kick ass!");
Enjoy
I'm writing a piece of software in Java, with a GUI programmed using swing. The user has to do this two operations in a loop:
write some words in a text field (let's call it A) and press Enter
click a button (let's call it B)
After Enter is pressed, some other fields show some data. After the button is clicked, all text fields are cleared and the procedure restarts. The text field to fill in is always A and the button to click is always B. This is what I would like to implement:
After the text field is filled and Enter is pressed, the button is somehow selected so that if the user presses Enter again the button is clicked
After the button is pressed, the text field is selected and in "write mode", so that the user can immediately start typing
What is the easiest method to implement this? Below I'm reporting what I have already tried.
I tried this to make the button selected immediately after Enter is pressed in the text field:
this.getRootPane().setDefaultButton(ButtonNextQuestion);
but when I press Enter, it is registered both by the text field and the button and I cannot see intermediate data.
I tried also with these lines:
ButtonNextQuestion.requestFocus();
ButtonNextQuestion.setSelected(true);
in this case everything seems working, but when I press enter the button is not clicked.
Thanks to AdamK!
The focus to the button was given like this:
ButtonNextQuestion.requestFocus();
ButtonNextQuestion.setSelected(true);
I had to add a listener to the button like this:
private void ButtonNextQuestionKeyPressed(java.awt.event.KeyEvent evt){
if(evt.getKeyCode() == 10) {//ENTER pressed: click
ButtonNextQuestion.doClick();
}
}
Then again to automatically select and make the text field ready to be written I used:
TextYourAnswer.requestFocus();
I am learning android programming so be cool with me.
My question is, i am having for example 5 buttons.User clicks any one button out of 5 and clicks another button.So how to keep track of previously clicked button ids.So the 2nd button clicks output is based on the previous button.
Can any one throw me pointers on that.I am new to java and android.
I will recommend you to follow (Screen State) base approach; as below:
1.) Create Screen State class and assign each state a unique value.
2.) You should mention Screen state stack and the current screen state.
3.) when you press a button, call a OnstateChange() function. Which should determine the next screen (based on current screen and whether user moved forward or backward). If user moved backward, pop the screen from stack and mark it as current screen.
If you need to remember only the very last button you clicked, use a class member variable to remember something about it (the button's ID, or a numeric index, or something). You should set this member variable in the onClick() call corresponding to the button.
If you need to remember the entire history of clicked buttons, use a List implementation (ArrayList should be fine) and add() the information about the button (the button's ID, or a numeric index, or something) in the onClick() method corresponding to the button.
If you have different OnClickHandler's for each button, this is pretty straightforward. If you share an OnClickHandler, you will need to use some identifying property of the View you get passed in as an argument to onClick().
I Want to make my EditText empty when you put a new value. If I use a onClickListener I need first to focus and then to click (Double click), if I use onFocusChangeListener it is already deleting when click another EditText.
Does someone know a other way to achieve this (When first click == empty)?
Thanks in advance!
Don't make things complicated. Simply set android:selectAllOnFocus="true" to your EditText. So, when the user types-in some text and later click the text box, all the text inside will be highlighted - allowing user to type-in new text from scratch.