EditText - 当清晰文本时，光标将开始播放每个字母

Question

我将TextWatcher设置为EditText，如下所示。但是当我尝试清除文本时，光标将在清除每个字母后开始。

  class MyInputWatcher implements 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) {
        et.removeTextChangedListener(watcher2);
        et.setText(s.toString().replaceAll("[^[:alpha:]]", ""));
        et.addTextChangedListener(watcher2);
    }
    @Override
    public void afterTextChanged(Editable s) {

    }
}

Answer 1

这样做（更新）：

class MyInputWatcher implements 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) {
        String temp = s.toString().replaceAll("[^a-zA-Z]", "");
        if (s.toString().length() != temp.length()) {
            et.setText(temp);
            et.setSelection(temp.length());
        }
    }

    @Override
    public void afterTextChanged(Editable s) {
    }
}

Answer 2

Subhash Kumar，你可以使用方法：

et.setSelection(position)

用于在需要位置显示光标

Answer 3

每次清除一个字符时，它都会调用onTextChanged()方法，作为您的实现，它会获取edittext文本并将其设置为它，因此光标将显示在文本的开头。清除et.setText(s.toString().replaceAll("[^[:alpha:]]", ""));，它将被修复。或者使用此et.setSelection(et.getText().toString().length+1);

Answer 4

在像这样的afterTextChanged（）方法上设置光标位置。

class MyInputWatcher implements 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) {
    et.removeTextChangedListener(watcher2);
    et.setText(s.toString().replaceAll("[^[:alpha:]]", ""));
    et.addTextChangedListener(watcher2);
}
@Override
public void afterTextChanged(Editable s) {
    et.setSelection(et.getText().toString().length())
}

}

Answer 5

请尝试这样

editText.setSelection(editText.getText().toString().length());