编辑框未在Android中获得焦点

Question

i'm facing wired problem in android when i try to focus for a EditText control.

In my application, i am dynamically adding the edit controls, whenever new control is added i wanted to give auto focus and popup the softkeypad automatically.

sometimes editbox get focus, but if i type text will not appear, sometimes text will appear in the other text control.

i'm observing this behaviour in my phone.

Here is my code snippet which i used to provide focus.

  if(mOldEditBox!=null)
            {
                mOldEditBox.clearFocus();
            }

            textView.requestFocus();
            //textView.setInputType(InputType.TYPE_CLASS_PHONE); //to popup numpad
            //textView.setOnFocusChangeListener(focuschange); 
            mOldEditBox = textView;

i tried setting focuschangelistener event, still it didnt worked :(

OnFocusChangeListener focuschange = new OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            // TODO Auto-generated method stub
            if(hasFocus){

                EditText txt = (EditText)v;

                //txt.setInputType(InputType.TYPE_CLASS_PHONE); //to popup numpad

                ((InputMethodManager)getSystemService(INPUT_METHOD_SERVICE))
        .showSoftInput(txt, InputMethodManager.SHOW_FORCED);

            }
        }
    };

Kindly help me where is the problem.. thanks in advance

Answer 1

You are probably not on the UI thread when requesting focus which might cause the strange behavior of the EditText. Try adding it to the message queue using the post(Runnable) method:

textView.post(new Runnable() {
    public void run() {
        textView.requestFocus();
    }
});