我有一个包含两个编辑文本的 Activity ，并且在该 Activity 中有一个单独实现的 TextWatcher。我想制作一个实现 TextWatcher 和该编辑文本中的 TextWatcher 的类。我怎样才能做到这一点
代码:-
private TextWatcher getmWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
checkFieldsForEmpty();
}
};
private TextWatcher mWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
checkFieldsForEmpty();
}
};
m_InputMobile = (EditText) findViewById(R.id.input_mobile);// finding Id of Mobile Number edit text
m_InputMobile.addTextChangedListener(getmWatcher);
m_InputPassword = (EditText) findViewById(R.id.input_password);// finding Id of assword editText
m_InputPassword.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);// defining password edit Tect Input type
最佳答案
有两种方法可以做到这一点。
首先
TextWatcher textWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (m_InputMobile.getText().hashCode() == s.hashCode()) {
checkFieldsForEmpty();
}
else if (m_InputPassword.getText().hashCode() == s.hashCode()) {
checkFieldsForEmpty();
}
}
};
m_InputMobile = (EditText) findViewById(R.id.input_mobile);
m_InputMobile.addTextChangedListener(getmWatcher);
m_InputPassword = (EditText) findViewById(R.id.input_password);
m_InputPassword.addTextChangedListener(getmWatcher);
或者创建一个自定义的 TextWatcher 类
第二
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
m_InputMobile = (EditText) findViewById(R.id.input_mobile);
m_InputMobile.addTextChangedListener(new CustomTextWatcher(m_InputMobile));
m_InputPassword = (EditText) findViewById(R.id.input_password);
m_InputPassword.addTextChangedListener(new CustomTextWatcher(m_InputPassword));
}
private class CustomTextWatcher implements TextWatcher {
private EditText mEditText;
public CustomTextWatcher(EditText e) {
mEditText = e;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
checkFieldsForEmpty();
}
}
有关更多详细信息，请访问 this问题。
快乐编码。
关于android - 如何在android中的多个编辑文本上添加Text Watcher？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38177094/