我有8個片段,每個片段都包含一個包含在TextInputLayout中的EditText。在onCreateView,AM實施Common TextWatcher類
EditText inputTextFrag1 = (EditText)findViewById(R.id.et_frag1);
inputTextFrag1.addTextChangedListener(new MyTextWatcher(inputTextFrag1));
亦很不必實現在每個片段中的身體如下MyTextWatcher類:
private class MyTextWatcher implements TextWatcher {
private View view;
public MyTextWatcher(View view) {
this.view = view;
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
saveButton.getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY);
saveButton.setClickable(false);
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
saveButton.getBackground().setColorFilter(null);
switch (view.getId()) {
case R.id.et_frag1:
validateName();
break;
}
}
}
凡validateName();
private boolean validateName() {
if (inputTextFrag1 .getText().toString().trim().isEmpty()) {
mInputLayoutName.setError(getString(R.string.err_msg_name));
requestFocus(inputTextFrag1);
return false;
} else {
mInputLayoutName.setErrorEnabled(false);
}
return true;
}
有一種方法以具有某處僅有一個MyTextWatcher類和一個validateName()方法由每個片段,而不是重複相同的類/方法8次被調用。謝謝
這是將TextWatcher類放在BaseDialogFragment中的正確方法嗎?
public abstract class BaseDialogFragment extends DialogFragment{
private class MyTextWatcher implements TextWatcher {
private View view;
public MyTextWatcher(View view) {
this.view = view;
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
}
}
}
什麼邏輯進入TextWatcher的beforeTextChanged和afterTextChanged方法?
@Geob,你爲什麼編輯你想評論? –
@uoɥʇʎPʎzɐɹC-對不起,意識到了這個錯誤,試圖撤消但不能 – Geob