我有一个 EditText 视图，我希望它将用户的输入格式化为电话号码格式。例如，当用户输入 1234567890 时，只要输入前 3 个数字，EditText 视图就会动态地将其显示为“(123) 456-7890”。
我在我的 OnCreate 中尝试了以下操作，但它似乎对我没有任何作用......
EditText ET = (EditText) findViewById(R.id.add_number);
ET.addTextChangedListener(new PhoneNumberFormattingTextWatcher());
如何让用户的输入以电话号码格式显示？
使用此代码，您可以制作自定义 TextWatcher 并制作您想要的任何格式：
ET.addTextChangedListener(new PhoneNumberFormattingTextWatcher() {
//we need to know if the user is erasing or inputing some new character
private boolean backspacingFlag = false;
//we need to block the :afterTextChanges method to be called again after we just replaced the EditText text
private boolean editedFlag = false;
//we need to mark the cursor position and restore it after the edition
private int cursorComplement;
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//we store the cursor local relative to the end of the string in the EditText before the edition
cursorComplement = s.length()-ET.getSelectionStart();
//we check if the user ir inputing or erasing a character
if (count > after) {
backspacingFlag = true;
} else {
backspacingFlag = false;
}
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// nothing to do here =D
}
@Override
public void afterTextChanged(Editable s) {
String string = s.toString();
//what matters are the phone digits beneath the mask, so we always work with a raw string with only digits
String phone = string.replaceAll("[^\\d]", "");
//if the text was just edited, :afterTextChanged is called another time... so we need to verify the flag of edition
//if the flag is false, this is a original user-typed entry. so we go on and do some magic
if (!editedFlag) {
//we start verifying the worst case, many characters mask need to be added
//example: 999999999 <- 6+ digits already typed
// masked: (999) 999-999
if (phone.length() >= 6 && !backspacingFlag) {
//we will edit. next call on this textWatcher will be ignored
editedFlag = true;
//here is the core. we substring the raw digits and add the mask as convenient
String ans = "(" + phone.substring(0, 3) + ") " + phone.substring(3,6) + "-" + phone.substring(6);
ET.setText(ans);
//we deliver the cursor to its original position relative to the end of the string
ET.setSelection(ET.getText().length()-cursorComplement);
//we end at the most simple case, when just one character mask is needed
//example: 99999 <- 3+ digits already typed
// masked: (999) 99
} else if (phone.length() >= 3 && !backspacingFlag) {
editedFlag = true;
String ans = "(" +phone.substring(0, 3) + ") " + phone.substring(3);
ET.setText(ans);
ET.setSelection(ET.getText().length()-cursorComplement);
}
// We just edited the field, ignoring this cicle of the watcher and getting ready for the next
} else {
editedFlag = false;
}
}
});
确保将 XML 中的 EditText 长度限制为 14 个字符
<EditText
android:id="@+id/editText_phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="phone"
android:lines="1"
android:maxLength="14"/>
第 1 步：这里是 XML 文件中输入字段的代码。
<EditText
android:id="@+id/editText_phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="phone"
android:lines="1"
android:maxLength="14"/>
第 2 步：这是添加到 MainFile.java 中的代码
phoneNo = (EditText)findViewById(R.id.editText_phone);
phoneNo.addTextChangedListener(new PhoneNumberFormattingTextWatcher());
输出：它会给你像 (123)456-7890 这样的数字
PhoneNumberFormattingTextWatcher() 方法不起作用我尝试分配最后我得到了解决方案
在你的 xml 文件中粘贴这个
<EditText
android:id="@+id/editTextId"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:inputType="phone"
android:digits="0123456789+" />
在你的 oncreate 方法中粘贴这个
final EditText editText = (EditText) findViewById(R.id.editTextId);
editText.addTextChangedListener(new TextWatcher()
{
@Override
public void onTextChanged(CharSequence s, int start, int before, int count)
{
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after)
{
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s)
{
String text = editText.getText().toString();
int textLength = editText.getText().length();
if (text.endsWith("-") || text.endsWith(" ") || text.endsWith(" "))
return;
if (textLength == 1) {
if (!text.contains("("))
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, "(").toString());
editText.setSelection(editText.getText().length());
}
}
else if (textLength == 5)
{
if (!text.contains(")"))
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, ")").toString());
editText.setSelection(editText.getText().length());
}
}
else if (textLength == 6)
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, " ").toString());
editText.setSelection(editText.getText().length());
}
else if (textLength == 10)
{
if (!text.contains("-"))
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, "-").toString());
editText.setSelection(editText.getText().length());
}
}
else if (textLength == 15)
{
if (text.contains("-"))
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, "-").toString());
editText.setSelection(editText.getText().length());
}
}
else if (textLength == 18)
{
if (text.contains("-"))
{
editText.setText(new StringBuilder(text).insert(text.length() - 1, "-").toString());
editText.setSelection(editText.getText().length());
}
}
}
});
输出：-
我做了一些事情，我将输入类型修改为电话，然后我使用正则表达式删除所有非数字字符： phonenumber = phonenumber.replaceAll("\D", "");
在您的布局中，将输入模式设置为“电话”
http://developer.android.com/reference/android/widget/TextView.html#attr_android:inputMethod http://developer.android.com/reference/android/text/InputType.html#TYPE_CLASS_PHONE
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="phone" />
如果这不太适合您的需要，请在您的 EditText 中添加一个侦听器，并在每次击键时手动设置文本格式。
editText.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_UP) {
// format your EditText here
}
return false;
}
});
请找到以下代码：
我使用TextWatcher接口将输入的电话号码动态格式化为（XXX）XXX-XXXX。
UsPhoneNumberFormatter addLineNumberFormatter = new UsPhoneNumberFormatter(edittxtPhoneNo);
edittxtPhoneNo.addTextChangedListener(addLineNumberFormatter);
public class UsPhoneNumberFormatter implements TextWatcher {
private EditText etMobile;
public UsPhoneNumberFormatter(EditText edt) {
etMobile = edt;
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
String text = etMobile.getText().toString();
int textlength = etMobile.getText().length();
if (text.endsWith(" "))
return;
if (textlength == 1) {
if (!text.contains("(")) {
etMobile.setText(new StringBuilder(text).insert(text.length() - 1, "(").toString());
etMobile.setSelection(etMobile.getText().length());
}
} else if (textlength == 5) {
if (!text.contains(")")) {
etMobile.setText(new StringBuilder(text).insert(text.length() - 1, ")").toString());
etMobile.setSelection(etMobile.getText().length());
}
} else if (textlength == 6) {
if (!text.contains(" ")) {
etMobile.setText(new StringBuilder(text).insert(text.length() - 1, " ").toString());
etMobile.setSelection(etMobile.getText().length());
}
} else if (textlength == 10) {
if (!text.contains("-")) {
etMobile.setText(new StringBuilder(text).insert(text.length() - 1, "-").toString());
etMobile.setSelection(etMobile.getText().length());
}
}
}
@Override
public void afterTextChanged(Editable editable) {
}
}
您可以使用 JQuery validate（onkeyup 事件）来执行此操作，这样您就可以在输入时进行动态格式化（在那里考虑的不愉快体验） - 或者您可以使用 MVVM 库（例如 RAZOR 或 KnockoutJS）来执行此操作（当它们退出该字段时） .
JQuery Validate 文档站点和淘汰赛 JS 站点都提供了您想要做的示例。