I am developing an Android , which has a Text Field.
Every time user presses any key in the text field(EDIT TEXT), I want to to read that in a character variable, perform some action with that variable, and simultaneously empty the text field. In a way, it is a listener to that EditText Field which performs an operation with every key(character) pressed.
Any ideas on how to implement it?
Implement and add a TextWatcher to your EditText: http://developer.android.com/reference/android/text/TextWatcher.html
You will want to use a TextWatcher.
Related
I want to set some text in EditText type fields. I want to do this while loading the activity. And then I don't want user to make any changes to it. Can I set EditText type boxes to non-editable mode? Does there exists any other element which could solve my purpose?
A TextView sounds like what you want; you can call setText() on them.
For EditText itself you could call this version of setText(), and set the buffer type to NORMAL instead of EDITABLE.
there are two options.
setEditable and setEnable. set false in Oncreate.
but in setEditable user can edit text by long click -> paste option.
If you are not taking any input from user in the EditText and it is just used to show some text that is set programmatically at onCreate, then you can use TextView instead. It is more suited for your requirement.
Here is a comparison between EditText and TextView that might be helpful.
Is there any particular reason for you to use a non-editable EditText? In case you absolutely have to use EditText then setting it as non-editable in your code after you set the value will suffice. You can do it in a few different ways, one of them would be setting input type as null in code.
yourEditText.setInputType(InputType.TYPE_NULL);
You can do android:enabled="false" in layout of that activity.
or
editText.setEnabled(false);
In my app I have a couple of checkboxes, that when checked combine the first part of an edittext. In the same edittext I would like to allow the user to append some text, while disallowing to delete the built text.
This is how it looks
[This part is build from checkbox combination, and can change in real time][This part is user defined]
Now is there a way to not allow the user to modify the first part of the edittext, but still allow the app to change this text?
You can certainly create a TextWatcher object and add it to your edittext. In your textwatcher, you can store the constant text information in an instance variable. Then, you can fill in the onTextChanged() and afterTextChanged() methods to create the type of behavior you are looking for.
For example, you can check the cursor position (using editText.getSelected()) to see if the user tried to change some of the text that shouldn't be changed-- if they do, then have some code to handle the case.
I know this isn't the best answer, but I don't yet have privilege to make a comment. Hope this helps!
So I hid the soft keyboard because I only want "1" and "0" to be the buttons to type with and a delete button. I have two EditText boxes. How do I go about letting the user click on the EditBox and be able to have those Buttons only type in that box? and same with the delete. I only need to know how to make it recognize that you have chosen that box. Take whats there and add "0" to the end of the string.
Thanks
If all you are looking for is to get the EditText that is selected, then use the hasFocus() method on each EditText. The method returns a Boolean value depending on whether or not it has focus (has been selected by the user). Then insert your text into the EditText that has focus.
If this does not help, I've done something similar to this before and can offer you a different solution.
Hi friends
I have an editable text box with a default value like to display to the user like "entername". If the user touches the edit box, I want to clear the value of edittext box and show the virtual keypad to the user, and if the user presses the enter key, only in the edit text box, I have to start another activity. How do I do this?
Hi in android:hint at the type of key pressing only it clear value I want to on touch in edit text box clear value and show virtual keypad to user. How do I do this?
Thanks
What?
I really don't understand what you're asking, but it seems like you might be trying to do a hint? Rather than setting an onTouchEvent listener, add a android:hint="What to do" attribute to your EditText.
U use the following code
EditText EditTextName=findViewById(R.id.EditText01);
((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE)).showSoftInput(EditTextName), 0);
use this code in ontouchListener of EditText
Mohan if I am correct you have two questions here
How to display a hint in an edit box
How get some data from a web service
For the first question you can use android:hint="Enter Name"
For the second one you need to give us more info on what you are trying to do
Is there a way to set the background text of an EditText? for instance, I have a login screen with 2 EditText views, one for username and one for password. I want the text "Username" and "Password" be written inside the EditText, and once the user touches those the text disappears but once user deleted his own entry, text re-appears.
Is there a property for that or should I implement this on my own with events and stuff?
The hint property will take care of that for you.
Use hint property, or setHint method.