textwatcher

问题 I have a program where i have an editText . I want to implement TextWatcher to reflect the changes in the total edittext. I want to show the alert dialog when editbox reach the max character limit 10. When i implement Text watcher it works but it show two alert box when it reach 10 character. here is my code private TextWatcher mTextEditorWatcher = new TextWatcher() { public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void onTextChanged(CharSequence s,

问题 I've an edittext , it only gets numeric without decimal numbers. android:inputType="number" I want to separate thousands while I'm typing . For example 25,000 . I know I should use TextWatcher and I've used this code but I couldn't make it work : @Override public void afterTextChanged(Editable viewss) { String s = null; try { // The comma in the format specifier does the trick s = String.format("%,d", Long.parseLong(viewss.toString())); } catch (NumberFormatException e) { } } Could you help

问题 I have a custom listview which display an image, textview and radio button. I need to select only one item (i.e RadioButton)at a time. I attached a textwatcher to this listview and everything working fine. The problem goes here Lets assume that in the listview i selected the first radio button. I performed search option in EditText box show that it filters the listview items and the filtered list item/items will be displayed at the first position. Here the filterd item in the first positon is

问题 I will get a value from first EditText and one more value from second EditText both values are calculated and show the result in third EditText which is using only one TextWatcher in android. Please help me thank you. public class TextWatcher_Activity extends Activity { private EditText passwordEditText, passwordEditText1, passwordEditText2; private TextView textView; private View view; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

问题 I've read a few threads about this problem, but couldn't find a thorough answer. I have a ListView with 3 rows, each contains a TextView and an EditText, and a custom adapter that extends BaseAdapter. Here's the adapter's getView function: @Override public View getView(final int position, View convertView, ViewGroup parent) { if(convertView == null) { LayoutInflater inflater = mActivity.getLayoutInflater(); convertView = inflater.inflate(R.layout.settings_column, null); mTxtValue = (EditText)

问题 I set TextWatcher to EditText like below. But when I try to clear text, cursor is coming to start after clearing every letter. class MyInputWatcher implements TextWatcher { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { et.removeTextChangedListener(watcher2); et.setText(s.toString().replaceAll("[^[:alpha:]]", "")); et.addTextChangedListener(watcher2); }

问题 I am very much new to android and trying to learn various techniques including Search bar using Edit Text options. I am currently parsing Twitter using JSON and storing it in a list activity. Also, implementing is the search bar using EditText option such that when a user enters anything it receives a new arraylist.But somehow it needs to get integrated with TextWatcher and ListActivity. The actual error received : Create Constructor of TextWatcher. TwitterFeedAdapter has constructor as

问题 Hi I am writing an edittext in which I want expiry date of the credit card in MM/YY format. The algorithm I want to implement is as follows: If user enters anything from 2 to 9. I change the text input to 02/ to 09/ If the user enters 1, then I wait for the next digit and check if the int value month if less than 12. Here is my code for this. @Override public void afterTextChanged(Editable s) { String input = s.toString(); if (s.length() == 1) { int month = Integer.parseInt(input); if (month

问题 TextView textView=new TextView(context); textView.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { s.append("A"); } }); if we add a TextWatcher to a TextView , and i want to append an a letter to this TextView , every time the user write a letter in it, but this

问题 i use a TextWatcher to change pressed key value. my goal is that replace some characters while typing. for example when i type keys, if reached "S" character, replaces it with "a" character. my question is: should i do it in beforeTextChanged?? how? can anyone give me an example? 回答1: Using beforeTextChanged won't be useful because it won't interrupt the actual printing of the key to the EditText. I would use something similar to: public void afterTextChanged(Editable s) { if(s.length() > 0 &