我想重写EditText的getText()
方法。
我接收到这样的字符串:"12,345,678"
我的目的只是去掉逗号并返回Editable,但当我使用我的代码时,出现了一个错误。
public class AmountEditText extends EditText {
@Override
public Editable getText() {
Editable s = super.getText();
if(s!=null && s.length()>0) {
if (s.toString().contains(",")) {
return new SpannableStringBuilder(s.toString().replace(",", ""));
}
}
return s;
}
private TextWatcher watcher = 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) {
int position = getSelectionStart();
int nbCommaBefore;
int nbCommaAfter;
String str = s.toString();
String finalStr;
String formattedStr;
nbCommaBefore = str.length() - str.replace(",", "").length();
boolean containsDot = false;
if (str.contains(".")) {
containsDot = true;
formattedStr = str.split("\\.")[0];
} else {
formattedStr = str;
}
if (!s.toString().isEmpty()) {
removeTextChangedListener(watcher);
formattedStr = formattedStr.replace(",", "");
formattedStr = formattedStr.replaceAll("(\\d)(?=(\\d{3})+$)", "$1,");
if (containsDot) {
if (str.split("\\.").length != 1) {
finalStr = formattedStr + "." + str.split("\\.")[1].replace(",", "");
} else {
finalStr = formattedStr + ".";
}
} else {
finalStr = formattedStr;
}
nbCommaAfter = finalStr.length() - finalStr.replace(",", "").length();
setText(finalStr);
if (position == str.length()){
setSelection(finalStr.length());
}
else if (position == 0)
{
setSelection(0);
}
else if (nbCommaBefore < nbCommaAfter){
setSelection(position + 1);
}
else if (nbCommaAfter < nbCommaBefore){
setSelection(position - 1);
}
else{
setSelection(position);
}
addTextChangedListener(watcher);
}
}
@Override
public void afterTextChanged(Editable s) {
}
};
public AmountEditText(Context context) {
this(context, null);
}
public AmountEditText(Context context, AttributeSet attrs) {
super(context, attrs);
addTextChangedListener(watcher);
}
public AmountEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
addTextChangedListener(watcher);
}
}
E/MessageQueue-JNI: 在处理消息队列回调时出现异常: handleReceiveCallback E/MessageQueue-JNI: java.lang.IndexOutOfBoundsException: setSpan (0 ... 5) 超出了长度为4的范围 at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1265) at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:684) at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:677) at android.widget.SpellChecker$SpellParser.setRangeSpan(SpellChecker.java:532) at android.widget.SpellChecker$SpellParser.parse(SpellChecker.java:515) at android.widget.SpellChecker.spellCheck(SpellChecker.java:242) at android.widget.Editor.updateSpellCheckSpans(Editor.java:679) at android.widget.Editor.sendOnTextChanged(Editor.java:1249) at android.widget.TextView.sendOnTextChanged(TextView.java:8191) at android.widget.TextView.setText(TextView.java:4483) at android.widget.TextView.setText(TextView.java:4337) at android.widget.EditText.setText(EditText.java:89) at android.widget.TextView.setText(TextView.java:4312) at org.newtonproject.newpay.widgetlib.AmountEditText$1.onTextChanged(AmountEditText.java:74)
需要澄清的是,错误并不是来自于我的onTextChanged
方法,没有getText() override
时一切正常。
编辑: 用户可以输入数字,我将添加一些逗号以格式化数字。但是,当我覆盖getText()
时,我想删除这些逗号,这样我就不必每次过滤getText()
的返回结果了。