如何删除蒙面的edittext内容答案

【问题标题】：How to delete masked edittext content如何删除蒙面的edittext内容
【发布时间】：2020-08-18 06:33:29
【问题描述】：

例如：“2020/55”我有一个edittext形状，在4个数字后面放一个，在它后面写一个数字，效果很好。我的问题从删除时开始。删除/后的部分时，显示“/////”/前的部分的数字为，而不是。我添加了你的图片，如何删除它。 enter image description here

还有掩码类

public class CaseInputMask implements TextWatcher {
int uzunluk = 0;
EditText girilenMetin;

public CaseInputMask(EditText girilenMetin) {
    this.girilenMetin = girilenMetin;
    this.girilenMetin.addTextChangedListener(this);
}

@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
    String metin = girilenMetin.getText().toString();
    uzunluk = metin.length();
}

@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
    try {
        String metin = charSequence.toString();
        String girilenDeger = girilenMetin.getText().toString();
        if (girilenDeger.length() == 4) {
            metin += '/';
            girilenMetin.setText(metin);
            girilenMetin.setSelection(metin.length());
        }
    } catch (Exception e) {

    }
}

@Override
public void afterTextChanged(Editable editable) {

}
}

【问题讨论】：

标签： java android masking

【解决方案1】：

你应该像这样检查删除：

public class CaseInputMask implements TextWatcher {
private boolean running = false;
private boolean deleting = false;
private final String inputMask = "####/##";

public CaseInputMask() {

}

@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
    deleting = count > after;
}

@Override
public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
}

@Override
public void afterTextChanged(Editable editable) {
    if (running || deleting) {
        return;
    }
    running = true;

    int length = editable.length();
    if (length < inputMask.length()) {
        if (inputMask.charAt(length) != '#') {
            editable.append(inputMask.charAt(length));
        } else if (inputMask.charAt(length-1) != '#') {
            editable.insert(length-1, inputMask, length-1, length);
        }
    }

    running = false;
   }
}

还有

girilenMetin.addTextChangedListener(new CaseInputMask())

【讨论】：

有问题吗。我试过这段代码。它工作正常。