Question

这是我尝试做的事情。我需要在数字输入和字母输入之间添加一个空格。我正在使用TextWatcher类，但我无法得到我想要的内容

如果输入文本是：

APyt04XC2446

我需要它

APyt 04 XC 2446

但我得到了这个：

APyt 0 4 X C 2 4 4 6

这是我的TextWatcher类：

public class FormattingTextWatcher implements TextWatcher {

private static final String EMPTY_STRING = "";
private static final String WHITE_SPACE = " ";
private String lastSource = EMPTY_STRING;

@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) {
    String source = s.toString();

    if (!lastSource.equals(source)) {
        source = source.replace(WHITE_SPACE, EMPTY_STRING);
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < source.length(); i++) {
            if ((s.charAt(i)>='a' && s.charAt(i)<='z') || (s.charAt(i)>='A' && s.charAt(i)<='Z')) {
            } else {
                stringBuilder.append(WHITE_SPACE);
            }
            stringBuilder.append(source.charAt(i));
        }
        lastSource = stringBuilder.toString();
        s.replace(0, s.length(), lastSource);
    }
} }

请让我离开这个...谢谢

Answer 1

试试这个：

public class FormattingTextWatcher implements TextWatcher {

private static final String EMPTY_STRING = "";
private static final String WHITE_SPACE = " ";
private String lastSource = EMPTY_STRING;

@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) {
    String source = s.toString();

    int letterFlag = -1;

    if(Character.isLetter(character.charAt(0)){
       letterFlag = 0;
    }
    else{
       letterFlag = 1;
    }       

    for (int i = 1; i < source.length(); i++) {

          if(letterFlag == 1){
                if(Character.isLetter(character.charAt(i)){
                    stringBuilder.append(WHITE_SPACE);
                    letterFlag = 0;
                }
          }
          else{
               if(Character.isDigit(character.charAt(i)){
                    stringBuilder.append(WHITE_SPACE);
                    letterFlag = 1;
               }
          }

          stringBuilder.append(source.charAt(i));

   }


} }

Answer 2

为你

public class FormattingTextWatcher implements TextWatcher {

private static final String EMPTY_STRING = "";
private static final String WHITE_SPACE = " ";
private String lastSource = EMPTY_STRING;

@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) {
    String source = s.toString();

    if (!lastSource.equals(source)) {
        source = source.replace(WHITE_SPACE, EMPTY_STRING);
        StringBuilder stringBuilder = new StringBuilder();
        if ((str.charAt(0) >= 'a' && str.charAt(0) <= 'z') || (str.charAt(0) >= 'A' && str.charAt(0) <= 'Z'))
            flag = 1;
        else if ((str.charAt(0) >= '0' && str.charAt(0) <= '9'))
            flag = 0;
        for (int i = 0; i < str.length(); i++) {
            if (((str.charAt(i) >= 'a' && str.charAt(i) <= 'z') || (str.charAt(i) >= 'A' && str.charAt(i) <= 'Z')) && flag == 0) {
                stringBuilder.append(WHITE_SPACE);
                stringBuilder.append(str.charAt(i));
                flag = 1;
                continue;
            } else if ((str.charAt(i) >= '0' && str.charAt(i) <= '9') && flag == 1) {
                stringBuilder.append(WHITE_SPACE);
                stringBuilder.append(str.charAt(i));
                flag = 0;
                continue;
            }
            stringBuilder.append(str.charAt(i));
        }
        lastSource = stringBuilder.toString();
        lastSource = lastSource.replaceAll("\\s+", " "); // it would remove the extra spaces between characters
        s.replace(0, s.length(), lastSource);
    }
}
}

当文本从数字输入更改为字母输入时，如何插入空格，反之亦然？

2 个答案: