我正在尝试让Pin进入页面,我创建了4个EditTexts,并在我的活动中创建了一个函数.我的问题是,当我单击退格按钮时,我想将当前EditText聚焦到Before(Back)EditText,但是Key listener不起作用.
逻辑很简单,当用户输入编辑文本的数字时,它会失去焦点,然后编辑文本会变得焦点,然后它会变成这样.但问题是当我点击后退空间我想在edittext之前返回再次输入数字.我试图在beforeTextChange中插入keyListener,但它没有工作.
private void SetTextChange(final EditText etCurrent, final EditText etForward,final EditText etBack, final boolean isLast, final int currentPosition)
{
etCurrent.addTextChangedListener(new 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) {
if (etCurrent.getText().length() == 1 && !isLast ) {
etCurrent.setTypeface(null, Typeface.NORMAL);
etCurrent.clearFocus();
etForward.requestFocus();
etForward.setCursorVisible(true);
etCurrent.getBackground().setColorFilter(getResources().getColor(R.color.lavender_indigo), PorterDuff.Mode.SRC_ATOP);
} else if (etCurrent.length() == 0) {
etCurrent.getBackground().setColorFilter(getResources().getColor(R.color.french_gray), PorterDuff.Mode.SRC_ATOP);
etCurrent.setTypeface(null, Typeface.SANS_SERIF.getStyle());
etCurrent.setTypeface(null, Typeface.NORMAL);
etCurrent.clearFocus();
etBack.requestFocus();
etBack.setCursorVisible(true);
}
if (etCurrent.length() != 0) {
Integer currentKey = Integer.parseInt(etCurrent.getText().toString());
keyList.set(currentPosition, currentKey);
} else
keyList.set(currentPosition, -1);
if (keyList.size() > 3)
showToast(keyList.get(0) + " " + keyList.get(1) + " " + keyList.get(2) + " " + keyList.get(3));
}
@Override
public void afterTextChanged(Editable s) {
}
});
/*curText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(View arg0, boolean arg1) {
curText = etCurrent;
backText = etBack;
curText.setText("");
}
});*/
}
这也是我的EditText示例xml之一.(其他都是一样的)
<EditText
android:layout_column="1"
android:layout_columnWeight="1"
android:id="@+id/etActivationDigit1"
android:layout_width="70dp"
android:layout_height="wrap_content"
android:textSize="80dp"
android:textAlignment="center"
android:gravity="center_horizontal"
android:hint="*"
android:textColorHint="@color/french_gray"
android:backgroundTint="@color/french_gray"
android:fontFamily="sans-serif"
android:textColor="@color/perfume"
android:maxLength="1"
android:inputType="number"
/>
当用户输入错误的号码时,我只想擦除并重新聚焦.注意:当你填写所有字段时,你会看到你可以删除并返回,但我想回到密码的中间位置.谢谢.
etCurrent.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if(etCurrent.getText().toString() == "" && keyCode == event.KEYCODE_DEL)
{
etCurrent.setText("");
etCurrent.clearFocus();
etBack.requestFocus();
etBack.setText("");
}
return false;
}
});
当我触摸退格键时,我的Backspace侦听器不会触发,但会触发所有其他字符.
最佳答案 这适用于我的4位密码活动.
private void setupInputListeners() {
verificationCode1EditText.addTextChangedListener(new 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) {
if (s.length() == 1) {
verificationCode2EditText.requestFocus(View.FOCUS_DOWN);
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
verificationCode2EditText.addTextChangedListener(new 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) {
if(count == 0) {
verificationCode1EditText.requestFocus(View.FOCUS_DOWN);
} else {
if (s.length() == 1) {
verificationCode3EditText.requestFocus(View.FOCUS_DOWN);
}
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
verificationCode3EditText.addTextChangedListener(new 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) {
if(count == 0) {
verificationCode2EditText.requestFocus(View.FOCUS_DOWN);
} else {
if (s.length() == 1) {
verificationCode4EditText.requestFocus(View.FOCUS_DOWN);
}
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
verificationCode4EditText.addTextChangedListener(new 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) {
if(count == 0) {
verificationCode3EditText.requestFocus(View.FOCUS_DOWN);
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
}