android-edittext

问题 I have an EditText field in my layout. I want to perform an action when the user stops typing in that edittext field. I have implemented TextWatcher and use its functions @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) { } @Override public void afterTextChanged(Editable editable) { } The function onTextChanged and afterTextChanged get called just

问题 I have an EditText in android for users to input their AGE. It is set an inputType=phone. I would like to know if there is a way to check if this EditText is null . I've already looked at this question: Check if EditText is empty. but it does not address the case where inputType=phone. These, I've checked already and do not work: (EditText) findViewByID(R.id.age)).getText().toString() == null (EditText) findViewByID(R.id.age)).getText().toString() == "" (EditText) findViewByID(R.id.age))

问题 This question already has answers here : How to check edittext's text is email address or not? (16 answers) Closed 5 years ago . I want to validate an email introduced inside an EditText and this the code that I already have: final EditText textMessage = (EditText)findViewById(R.id.textMessage); final TextView text = (TextView)findViewById(R.id.text); textMessage.addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) { if (textMessage.getText().toString().matches(

问题 I have three textviews and one edit text in the list. when I entered any value in the edittext, the same value is also copied in the other edittext. I tired implementing with both onFocusChangedListener and onTextChanged but the problem is same in both the cases. public class ProductListAdapter extends BaseAdapter { Context context; public ArrayList<Products> prodList; private static LayoutInflater inflater = null; public ProductsList productListActivity; public ProductListAdapter(Context

问题 I have three textviews and one edit text in the list. when I entered any value in the edittext, the same value is also copied in the other edittext. I tired implementing with both onFocusChangedListener and onTextChanged but the problem is same in both the cases. public class ProductListAdapter extends BaseAdapter { Context context; public ArrayList<Products> prodList; private static LayoutInflater inflater = null; public ProductsList productListActivity; public ProductListAdapter(Context

问题 I actually wand to type Arabic,Is it possible ? I am creating an android application.And i am new to it.please help. i tried these code it didn't work. if(UTILSSessionVariables.LCID==2057) { setContentView(R.layout.passportdocumentfields); LastName.setGravity(Gravity.LEFT); } else if(UTILSSessionVariables.LCID==3801) { setContentView(R.layout.arabicpassportdetails); LastName.setGravity(Gravity.RIGHT); } 回答1: Use a Bidi object to get the information on the position reordering of a

问题 I have an activity that retrieves data from a database that contains information (name, capital, population, flag image) for many countries. The main layout has an EditText to take the capital name as the input and a ListView. On launching the activity, all the countries are retrieved and shown briefly in the ListView. Then on typing in the EditText I want the ListView to show the countries with the matching capital name. But what I see is a blank ListView. Besides if the EditText is empty, I

问题 I've search over the threads but so far I have not found what I'm looking for. I created a custom Alert Dialog that show up and I can do almost anything with it. It custom dialog is made of 3 TextViews and 3 EditText but whenever I need to get the EditText I get a null component. From my xml file <TextView android:layout_alignParentTop="true" android:id="@+id/txtAccName" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Name" android:textSize="23dp" > <

问题 In my application I want to give the user ways of selecting text from a list and appending into an edittext, however Im unable to find any documentation on how to do this, any help would go a long way, thanks. 回答1: Just use append() of the EditText. The Argument will be appended at the end of the Editable. 来源： https://stackoverflow.com/questions/9981334/how-to-append-text-into-an-edittext-in-android

问题 I was wondering if you can control input on an EditText to move from right to left? The EditText would have to support insert/delete etc. from right to left as well. Is there a way to do this? 回答1: It sounds like you just need to set gravity to the right. 回答2: Add this to your editText android:textDirection="rtl" 回答3: Just use this: android:layout_gravity="start" android:textAlignment="viewStart" 回答4: try this code //initialize EditText userName = (EditText)findViewById(R.id.userName); //set