对于使用功能将值从一个类传递到另一个类的EditText，findViewById返回null

Question

findViewById returns null for EditText passing values from one class to another class

public void HandleSearchButtonValue(int START_INDEX,int places,String featurea){
    try {
        EditText locationEdit=(EditText)findViewById(places);
        InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(locationEdit.getWindowToken(), 0);
        String locationAddress =locationEdit.getText().toString();

Answer 1

findViewById returns the first child view matching the ID.

If you are calling it in an Activity , the android.R.id.content View (the one you set with setContentView ) is used as parent, so only views are returned which are in the current Layout.

Please provide more information about the caller and the holding class of this method for further help.