Question

我对onTextChanged()和EditText事件处理程序使用onKey()。我想在输入文本时处理onTextChanged()，在删除文本时处理onKey()，即我想处理KEYCODE_DEL。但是我的onTextchanged()事件总是会发生。任何人都可以发一些想法。

ed.setOnKeyListener(this); 
ed. addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
   //
});
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {    
if (keyCode == KeyEvent.KEY CODE_ENTER) {
// 
});

Answer 1

我通过使用所有回调函数在TextWatcher（）中编写整个逻辑解决了这个问题，因为对于Nexus Devices的SoftKeyBoard，不会触发onKeyListener。我发布的代码可能对其他人有用

    ed.addTextChangedListener(new TextWatcher() {
                private String previousDigits, num;
                private boolean textChanged = false;

                @Override
                public void onTextChanged(CharSequence currentDigits, int start,
                        int before, int count) {
                    if (!(previousDigits.equalsIgnoreCase(currentDigits.toString()))) {
                        textChanged = true;
                        num = getStrippedNumber(currentDigits
                                .toString());
                                            //getStrippedNumber method is used for getting the numeric digits from the string.
                        if (num.length() > 6) {
                            num = ("(" + num.substring(0, 3) + ") "
                                    + num.substring(3, 6) + "-" + num.substring(6));
                        } else if (num.length() > 3) {
                            num = ("(" + num.substring(0, 3) + ") " + num
                                    .substring(3));
                        }
                    }
                }

                @Override
                public void beforeTextChanged(CharSequence s, int start, int count,
                        int after) {
                    previousDigits = s.toString();
                }

                @Override
                public void afterTextChanged(Editable s) {
                    if (textChanged) {
                        textChanged = false;
                        mEditPhoneNo.setText(num);
                        mEditPhoneNo.setSelection(mEditPhoneNo.getText().length());
                    }
                }
            });

    Thanks Guyz

Android EditText事件监听器

1 个答案: