I have following code for my edittext formatting, since it can take any input I am not setting any input type:

我的编辑文本格式有以下代码，因为它可以接受我没有设置任何输入类型的任何输入：

if (cardNumberEditText != null) {
    cardNumberEditText.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            int currSel = cardNumberEditText.getSelectionStart();
            cardNumberEditText.removeTextChangedListener(textWatcher);
            .
            .
            cardNumberEditText.setText(formattedNumber);
            .
            .
            cardNumberEditText.setSelection(currSel);
            cardNumberEditText.addTextChangedListener(textWatcher);
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
}

So initially I get the default input type which is ABC, now when I change it to ?123 (using ABC/123? toggel button) and after entering some number the keyboard changes back to ABC. This code seams to work fine on samsung devices s3 and sywpe but not on nexus with L and HTC one

所以最初我得到的默认输入类型是ABC，现在当我将其更改为？123时(使用ABC/123？Togel按钮)，并且在输入某个数字之后，键盘变回ABC。此代码似乎可以在三星设备S3和Sywpe上正常运行，但不能在与L和HTC One的联结上运行

When I comment all the code inside onTextChanged, it works fine. So when I investigated I found out that culprit is cardNumberEditText.setText(formattedNumber);

当我注释onTextChanged中的所有代码时，它工作得很好。所以当我调查时，我发现罪魁祸首是cardNumberEditText.setText(FormattedNumber)；

I am not setting any input type, I am just using the ABC/?123 toggle key on keyboard for switching

我没有设置任何输入类型，我只是使用键盘上的ABC/？123切换键进行切换

Any help/suggestion why this is happening (on few devices) and how can I correct it ??

有什么帮助/建议吗？为什么会发生这种情况(在少数设备上)？我如何纠正它？

finnaly got it working, had to combine multiple solutions mentioned in the comments above

最终让它工作，不得不结合以上评论中提到的多个解决方案

since the guilty was settext, I found a replacement for it - append

既然有罪是定论，我就找了个替代的--追加

but to use append I had to clear edittext without using settext, this link to the rescue

但要使用append，我必须清除编辑文本，而不使用settext，这是指向救援的链接

so replaced

所以被取代了

cardNumberEditText.setText(formattedNumber);

with

使用

cardNumberEditText.getText().clear();
cardNumberEditText.append(formattedNumber);

works like a charm now

现在工作起来像个护身符

I had a similar problem, but keyboard was changed to default after I call
scrollView.fullScroll(NestedScrollView.FOCUS_DOWN) when keyboard is shown
I just replaced fullScroll method to smoothScrollTo and all work fine

我也有类似的问题，但在我调用scrollView.fullScroll(NestedScrollView.FOCUS_DOWN)之后，键盘被更改为默认的，当键盘显示时，我只是替换了FullScroll方法来平滑ScrollTo，所有的工作都很好

In addition to the accepted answer, if anyone else struggles with cursor moving to the end after .append(), here is how you can retain cursor position:

除了公认的答案之外，如果其他任何人在将光标移动到.append()之后的末尾时遇到困难，下面是如何保持光标位置的方法：

val cursor = editText.selectionEnd
editText.text?.clear()
editText.append(input)
editText.setSelectionSafe(cursor)

where setSelectionSafe() is an extension I use to prevent crushes

其中setSelectionSafe()是我用来防止崩溃的扩展

fun EditText?.setSelectionSafe(index: Int) {
    if (this == null || index > this.length()) return
    this.setSelection(index)
}

this works both for entering and deleting !

这对输入和删除都有效！