private static final String QUANTITY_REGEX = "^\\d{0,4}(\\,\\d{0,3})?$";
第二个项目 - ＆gt;使用第一个项目中的自定义编辑文本的项目。
之后，我将第一个类导出为第二个项目的库作为自定义编辑文本。
问题是： 因为你可以在第一个项目上看到正则表达式，只允许首先写入4个数字，在编辑文本上的“，”符号后面加2个数字。但我想让自定义编辑文本像这样
重点：1234,56 ！重点：1.234,56
如何使它成为可能。 THX
答案 0 :(得分：0)
将正则表达式更改为^ \ d {0,4}（。\ d {0,4}）？（，\ d {0,2}）？$
private static final String QUANTITY_REGEX ="^\\d{0,4}(.\\d{0,4})?(,\\d{0,2})?$";
比赛将是
1234
1234.5678
1234.5678,12
答案 1 :(得分：0)
这里我弄清楚...希望对其他程序员有用
这个概念： 1编辑文字
当用户专注于edittext（txt1）时，用户只能在逗号（“，”）之后写入4个数字，逗号（“，”）和3个另一个数字 - ＆gt;的 1234,567
当（txt1）onFocused = false（用户点击另一个editText）时，txt1会显示这样的数字 1.234,567
这里是代码
验证类
public class Validation {
// Regular Expression
// you can change the expression based on your need
private static final String EMAIL_REGEX = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
private static final String PHONE_REGEX = "\\d{3}-\\d{7}";
private static final String CURRENCY_REGEX = "^\\d{0,8}(\\,\\d{0,2})?$";
public String maxLength = Quantity.maxLengthFront;
public String QUANTITY_REGEX = null;
// Error Messages
private static final String REQUIRED_MSG = "required";
private static final String EMAIL_MSG = "invalid email";
private static final String PHONE_MSG = "###-#######";
private static final String CURRENCY_MSG = "invalid currency";
private static final String QUANTITY_MSG = "invalid quantity";
// call this method when you need to check email validation
public static boolean isEmailAddress(EditText editText, boolean required) {
return isValid(editText, EMAIL_REGEX, EMAIL_MSG, required);
}
// call this method when you need to check phone number validation
public static boolean isPhoneNumber(EditText editText, boolean required) {
return isValid(editText, PHONE_REGEX, PHONE_MSG, required);
}
// call this method when you need to check currency validation
public static boolean isCurrency(EditText editText, boolean required) {
return isValid(editText, CURRENCY_REGEX, CURRENCY_MSG, required);
}
public boolean isQuantity(EditText editText, boolean required){
return isValid(editText, QUANTITY_REGEX, QUANTITY_MSG, required);
}
// return true if the input field is valid, based on the parameter passed
public static boolean isValid(EditText editText, String regex, String errMsg, boolean required) {
String text = editText.getText().toString().trim();
// clearing the error, if it was previously set by some other values
editText.setError(null);
// text required and editText is blank, so return false
if ( required && !hasText(editText) ) return false;
// pattern doesn't match so returning false
if (required && !Pattern.matches(regex, text)) {
editText.setError(errMsg);
return false;
};
// pattern doesn't match so returning false
if (!required && !Pattern.matches(regex, text)) {
editText.setError(errMsg);
return false;
};
return true;
}
// check the input field has any text or not
// return true if it contains text otherwise false
public static boolean hasText(EditText editText) {
String text = editText.getText().toString().trim();
editText.setError(null);
// length 0 means there is no text
if (text.length() == 0) {
editText.setError(REQUIRED_MSG);
return false;
}
return true;
}
}
QUANTITY CLASS
public class Quantity extends EditText {
public static String maxLength;
public static String maxLengthFront = "4";
public static String regexCustom;
public boolean statusFocused = false;
public boolean allowBlank;
public String decimalPlaces;
String oldText;
Validation validation = new Validation();
public Quantity(Context context) {
super(context);
}
public Quantity(Context context, AttributeSet attrs) {
super(context, attrs);
// --- Additional custom code --
TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.Quantity);
final int N = a.getIndexCount();
for (int i = 0; i < N; ++i) {
int attr = a.getIndex(i);
switch (attr) {
case R.styleable.Quantity_decimalPlaces_quantity:
decimalPlaces = a.getString(attr);
// ...do something with delimiter...
break;
case R.styleable.Quantity_maxLength_quantity:
maxLength = "5";
// ...do something with fancyText...
doSetMaxLength();
break;
case R.styleable.Quantity_allowBlank_quantity:
allowBlank = a.getBoolean(attr, false);
// ...do something with fancyText...
break;
}
}
a.recycle();
this.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);
this.setKeyListener(DigitsKeyListener.getInstance("1234567890-.,"));
this.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
if (statusFocused == true) {
maxLengthFront = "4";
if (validation.isQuantity(Quantity.this, false)) {
// Toast.makeText(getContext(), "Validation True", Toast.LENGTH_SHORT).show();
} else {
// Toast.makeText(getContext(), "Validation False",Toast.LENGTH_SHORT).show();
Quantity.this.setText(oldText);
Quantity.this.setSelection(Quantity.this.getText().length(), Quantity.this.getText().length());
}
} else {
maxLengthFront = "5";
}
validation.QUANTITY_REGEX = "^\\d{0," + maxLengthFront + "}(\\,\\d{0,3})?$";
}
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
oldText = s.toString();
// Toast.makeText(getContext(), "Before change : " + s, Toast.LENGTH_SHORT).show();
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
});
this.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean gainFocus) {
// onFocus
String s;
if (gainFocus) {
maxLengthFront = "4";
validation.QUANTITY_REGEX = "^\\d{0," + maxLengthFront + "}(\\,\\d{0,3})?$";
s = Quantity.this.getText().toString().replace(".", "");
Quantity.this.setText(s);
statusFocused = true;
}
// onBlur
else {
maxLengthFront = "5";
validation.QUANTITY_REGEX = "^\\d{0," + maxLengthFront + "}(\\.\\d{0,3})?$";
Double number = Double.parseDouble(Quantity.this.getText().toString());
DecimalFormatSymbols symbol = DecimalFormatSymbols.getInstance();
symbol.setGroupingSeparator('.');
symbol.setDecimalSeparator(',');
DecimalFormat formatter = new DecimalFormat("###,###.###", symbol);
Quantity.this.setText(formatter.format(number));
statusFocused = false;
}
}
});
}
public Quantity(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// --- Additional custom code --
}
// @Override
// protected void onTextChanged(CharSequence text, int start,
// int lengthBefore, int lengthAfter) {
// // TODO Auto-generated method stub
// super.onTextChanged(text, start, lengthBefore, lengthAfter);
// Toast.makeText(getContext(), this.getText() + " - " + text.toString(),
// Toast.LENGTH_SHORT).show();
// }
public void doSetMaxLength() {
InputFilter[] FilterArray = new InputFilter[1];
FilterArray[0] = new InputFilter.LengthFilter(Integer.parseInt(maxLength, 10));
this.setFilters(FilterArray);
}
}