textwatcher

问题 How can I intercept this kind of events ? I need to add some logic when the user trying to paste some text into my EditText i know i can use TextWatcher but this entrypoint not good for me becuase i only need to intercept in case of paste and not every time the user press my EditText , 回答1: Seems there isn't much you can do by using the API: android paste event Source reading to the rescue! I dug into the Android Source of the TextView ( EditText is a TextView with some different

问题 How can I intercept this kind of events ? I need to add some logic when the user trying to paste some text into my EditText i know i can use TextWatcher but this entrypoint not good for me becuase i only need to intercept in case of paste and not every time the user press my EditText , 回答1: Seems there isn't much you can do by using the API: android paste event Source reading to the rescue! I dug into the Android Source of the TextView ( EditText is a TextView with some different

问题 I know a little bit about TextWatcher but that fires on every character you enter. I want a listener that fires whenever the user finishes editing. Is it possible? Also in TextWatcher I get an instance of Editable but I need an instance of EditText . How do I get that? EDIT : the second question is more important. Please answer that. 回答1: First, you can see if the user finished editing the text if the EditText loses focus or if the user presses the done button (this depends on your

问题 I have three EditText widgets in my view layout. Is there a way to use a single TextWatcher for all three EditTexts ? 回答1: I just encountered this problem. I solved it by creating an inner class implementation of TextWatcher that takes a View as an argument. Then, in the method implementation, just switch on the view to see which one the Editable is coming from Declaration: private class GenericTextWatcher implements TextWatcher{ private View view; private GenericTextWatcher(View view) { this

问题 This question already has answers here : Implementing Text Watcher for EditText (3 answers) Closed 4 years ago . I am designing a chat application using android studio and i am using fire-base as cloud service provider and i got stock on how to make a listener like if the user is typing on the edit-text field The value of the user on fire-base will changed into true and when the user is not typing the value will become false.? I am looking for this solution for about a week, and didn't find

问题 In my app, when a user types something in a search box then a list gets filtered but the position of the list items gets changed. And due to this changed position when the user clicks on a list item, it results in unwanted activity. Because I have set events to the list items according to their position. Is there any parameter of the list items/row which remains same even after getting the list filtered? 来源： https://stackoverflow.com/questions/9605066/how-to-get-correct-position-after

问题 Moving an app from 2.2 to 3.x, one of my EditText's that I was using a TextWatcher on for validation is behaving badly. In short, when a user clicks on the EditText and the entire word goes into 'suggestions mode' (where it is underlined), it effectively gets removed from the EditText from the TextWatcher's perspective, triggering my text validation check that I do for an empty EditText. The code: mText = (EditText) findViewById(R.id.inpt_title); mText.addTextChangedListener(new TextWatcher()

问题 Just a basic question: If I have several dozen EditText fields that are part of a ListAdapter, how can the individual EditText fields know to which row they belong? Currently I am using TextWatcher to listen for text input. I have tried extending TextWatcher so that I can pass in the position of the EditText to TextWatcher's constructor. However, when the soft keyboard pops up, the positions that correspond to the various EditText fields shuffle. How can I track the EditText fields to their

问题 I'm new in Android and I am making an application that has a TextView with a very long string, and I want the user to be able to search for particular word within the TextView through a SearchView or EditText. I know it's possible because I saw it in some applications, but can't find any examples on how to do it. I read something about textwatcher, but not how to do it. What I want is to work as Ctrl + F: find the written word and that the app select it. Something like this: 回答1: Well will

问题 I want the app to automatically compute when the user enters the requested two values into edittext, without needing a button. Is there a way to do it without using TextWatcher? here is my attempt. Why doesnt it work? The app force shuts when a number is entered in edittext. ' public class BodyMassIndex extends Activity { double result; EditText age, height, weight; TextView tvResult; int ageInt; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub