本文介绍了文本更改时将数字转换为货币格式的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我将 RxTextView.textChanges 用于 EditText ，当用户键入更改值<$ c $时c> EditText 来将数字转换为货币格式，如下所示：
I am using RxTextView.textChanges for EditText that when the user is typing change value of EditText to convert numbers to currency format like below:
1,000
但是我看不到任何将数字转换为货币格式。
我使用的是： NumberFormat.getNumberInstance（Locale.US）.format（productPrice）;
我的代码就像下面这样：
My code is like bellow:
Observable<CharSequence> observableDiscountPrice = RxTextView.textChanges(discountPriceEdittext);
observableDiscountPrice.map(new Function<CharSequence, Boolean>() {
@Override
public Boolean apply(@io.reactivex.annotations.NonNull CharSequence charSequence) throws Exception {
try {
if (charSequence.length() > 0) {
String pPrice = NumberFormat.getNumberInstance(Locale.US).format(charSequence.toString());
originalPriceEdittext.setText(String.valueOf(pPrice));
return true;
} else {
return false;
}
} catch (Exception e) {
return true;
}
}
}).subscribe(new Subject<Boolean>() {
@Override
public boolean hasObservers() {
return false;
}
@Override
public boolean hasThrowable() {
return false;
}
@Override
public boolean hasComplete() {
return false;
}
@Override
public Throwable getThrowable() {
return null;
}
@Override
protected void subscribeActual(Observer<? super Boolean> observer) {
}
@Override
public void onSubscribe(@io.reactivex.annotations.NonNull Disposable d) {
}
@Override
public void onNext(@io.reactivex.annotations.NonNull Boolean aBoolean) {
}
@Override
public void onError(@io.reactivex.annotations.NonNull Throwable e) {
}
@Override
public void onComplete() {
}
});
推荐答案
使用此TextWatcher类：
Use this TextWatcher class:
public class NumberTextWatcherWithSeperator implements TextWatcher {
private EditText editText;
public NumberTextWatcherWithSeperator(EditText editText) {
this.editText = editText;
}
@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) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (!value.equals("")) {
if (value.startsWith(".")) {
editText.setText("0.");
}
if (value.startsWith("0") && !value.startsWith("0.")) {
editText.setText("");
}
String str = editText.getText().toString().replaceAll(",", "");
if (!value.equals(""))
editText.setText(getDecimalFormattedString(str));
editText.setSelection(editText.getText().toString().length());
}
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
StringTokenizer lst = new StringTokenizer(value, ".");
String str1 = value;
String str2 = "";
if (lst.countTokens() > 1) {
str1 = lst.nextToken();
str2 = lst.nextToken();
}
String str3 = "";
int i = 0;
int j = -1 + str1.length();
if (str1.charAt(-1 + str1.length()) == '.') {
j--;
str3 = ".";
}
for (int k = j; ; k--) {
if (k < 0) {
if (str2.length() > 0)
str3 = str3 + "." + str2;
return str3;
}
if (i == 3) {
str3 = "," + str3;
i = 0;
}
str3 = str1.charAt(k) + str3;
i++;
}
}
}
and
yourEditText.addTextChangedListener(new NumberTextWatcherWithSeperator(yourEditText));
这篇关于文本更改时将数字转换为货币格式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！