我有8个片段,每个片段都包含一个包含在TextInputLayout中的EditText。在onCreateView,AM实施Common TextWatcher类
EditText inputTextFrag1 = (EditText)findViewById(R.id.et_frag1);
inputTextFrag1.addTextChangedListener(new MyTextWatcher(inputTextFrag1));
亦很不必实现在每个片段中的身体如下MyTextWatcher类:
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;
}
有一种方法以具有某处仅有一个MyTextWatcher类和一个validateName()方法由每个片段,而不是重复相同的类/方法8次被调用。谢谢
这是将TextWatcher类放在BaseDialogFragment中的正确方法吗?
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) {
}
}
}
什么逻辑进入TextWatcher的beforeTextChanged和afterTextChanged方法?
@Geob,你为什么编辑你想评论? –
@uoɥʇʎPʎzɐɹC-对不起,意识到了这个错误,试图撤消但不能 – Geob