I have a situation, where there are two fields. field1
and field2
. All I want
to do is empty field2
when field1
is changed and vice versa. So at the end only
one field has content on it.
field1 = (EditText)findViewById(R.id.field1);
field2 = (EditText)findViewById(R.id.field2);
field1.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
public void onTextChanged(CharSequence s, int start,
int before, int count) {
field2.setText("");
}
});
field2.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
public void onTextChanged(CharSequence s, int start,
int before, int count) {
field1.setText("");
}
});
It works fine if I attach addTextChangedListener
to field1
only, but when
I do it for both fields the app crashes. Obviously because they try to change
each other indefinitely. Once field1
changes it clears field2
at this moment
field2
is changed so it will clear field1
and so on...
Can someone suggest any solution?
You can add a check to only clear when the text in the field is not empty (i.e when the length is different than 0).
field1.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if(s.length() != 0)
field2.setText("");
}
});
field2.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if(s.length() != 0)
field1.setText("");
}
});
Documentation for TextWatcher
here.
Also please respect naming conventions.