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问题:
The User can enter only one digit in the edit text. if he enters the value in edtText1, I want the cursor automatically moves to edtText2 and so on. The user can able to edit the text which he/she has entered already. I tried the following way.
edtPasscode1.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (edtPasscode1.getText().length() == 1)
edtPasscode2.requestFocus();
return false;
}
});
edtPasscode2.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (edtPasscode2.getText().length() == 1)
edtPasscode3.requestFocus();
return false;
}
});
edtPasscode3.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (edtPasscode3.getText().length() == 1)
edtPasscode4.requestFocus();
return false;
}
});
If the user edit the text, The cursor moves to some other editTexts and not working as desired. How can i achieve the above?
回答1:
Try TextWatcher instead of onKeyListener
B'coz if want to edit your password, in that case TextWatcher will give you more method to dealt with..
Edited:-
StringBuilder sb=new StringBuilder();
edtPasscode1.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
if(sb.length()==0&edtPasscode1.length()==1)
{
sb.append(s);
edtPasscode1.clearFocus();
edtPasscode2.requestFocus();
edtPasscode2.setCursorVisible(true);
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
if(sb.length()==1)
{
sb.deleteCharAt(0);
}
}
public void afterTextChanged(Editable s) {
if(sb.length()==0)
{
edtPasscode1.requestFocus();
}
}
});
Hope this work.
回答2:
set android:maxLength="1" to all your ExitText in xml
Try the following code
edtxt1 = (EditText) findViewById(R.id.edtxt_phonenumber_one);
edtxt2 = (EditText) findViewById(R.id.edtxt_phonenumber_two);
edtxt3 = (EditText) findViewById(R.id.edtxt_phonenumber_three);
edtxt1.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
if (s.length() ==1) {
edtxt2.requestFocus();
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
});
edtxt2.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
if (s.length() == 1) {
edtxt3.requestFocus();
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
});
edtxt3.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
if (s.length() == 1) {
edtxt1.requestFocus();
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
});
This should work
回答3:
set the length to editetxt as android:maxLength="1" and follow the below code
((EditText) findViewById(R.id.edi1)).addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
if(((EditText) findViewById(R.id.edi1)).getText().toString().length()==1)
{
((EditText) findViewById(R.id.edi1)).clearFocus();
((EditText) findViewById(R.id.edi2)).requestFocus();
((EditText) findViewById(R.id.edi2)).setCursorVisible(true);
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
((EditText) findViewById(R.id.edi2)).addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
if(((EditText) findViewById(R.id.edi2)).getText().toString().length()==1)
{
((EditText) findViewById(R.id.edi2)).clearFocus();
((EditText) findViewById(R.id.edi3)).requestFocus();
((EditText) findViewById(R.id.edi3)).setCursorVisible(true);
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
((EditText) findViewById(R.id.edi3)).addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
if(((EditText) findViewById(R.id.edi3)).getText().toString().length()==1)
{
((EditText) findViewById(R.id.edi3)).clearFocus();
((EditText) findViewById(R.id.edi4)).requestFocus();
((EditText) findViewById(R.id.edi4)).setCursorVisible(true);
}
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
回答4:
The solution coding is OK,
Below codes indicate that auto move to next Edit Text and auto move to previous Edit Text.
It also OK if you are using Rxjava + Data Binding + RxBinding in below :
// Show button Active code when enough fields active code
Observable<Boolean> mObsPhoneVerify1 = RxTextView.textChanges(db.etPhoneVerify1)
.observeOn(AndroidSchedulers.mainThread())
.map(charSequence -> {
if (!charSequence.toString().equals("")) {
db.etPhoneVerify2.requestFocus();
return true;
} else {
db.etPhoneVerify1.requestFocus();
return false;
}
});
Observable<Boolean> mObsPhoneVerify2 = RxTextView.textChanges(db.etPhoneVerify2)
.observeOn(AndroidSchedulers.mainThread())
.map(charSequence -> {
if (!charSequence.toString().equals("")) {
db.etPhoneVerify3.requestFocus();
return true;
} else {
db.etPhoneVerify1.requestFocus();
return false;
}
});
Observable<Boolean> mObsPhoneVerify3 = RxTextView.textChanges(db.etPhoneVerify3)
.observeOn(AndroidSchedulers.mainThread())
.map(charSequence -> {
if (!charSequence.toString().equals("")) {
db.etPhoneVerify4.requestFocus();
return true;
} else {
db.etPhoneVerify2.requestFocus();
return false;
}
});
Observable<Boolean> mObsPhoneVerify4 = RxTextView.textChanges(db.etPhoneVerify4)
.observeOn(AndroidSchedulers.mainThread())
.map(charSequence -> {
if (!charSequence.toString().equals("")) {
hideKeyboard();
return true;
} else {
/*
If enough text for all fields, no need cursor
Otherwise, focus previous edit text
*/
if (Utils.isValidEditText(db.etPhoneVerify1) && Utils.isValidEditText(db.etPhoneVerify2) && Utils.isValidEditText(db.etPhoneVerify3)) {
db.etPhoneVerify3.requestFocus();
} else {
db.etPhoneVerify1.clearFocus();
db.etPhoneVerify2.clearFocus();
db.etPhoneVerify3.clearFocus();
db.etPhoneVerify4.clearFocus();
}
return false;
}
});
disposable = Observable
.combineLatest(mObsPhoneVerify1, mObsPhoneVerify2, mObsPhoneVerify3, mObsPhoneVerify4,
(PhoneVerify1, PhoneVerify2, PhoneVerify3, PhoneVerify4)
-> PhoneVerify1 && PhoneVerify2 && PhoneVerify3 && PhoneVerify4)
.compose(regisObserver(false))
.subscribe(aBoolean -> {
db.btnActiveCode.setEnabled(aBoolean);
});
回答5:
This worked for my case, also max_length of edit text should be 1.
otp_1.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
//
if(editable.length()>0){
otp_1.clearFocus();
otp_2.requestFocus();
otp_2.setCursorVisible(true);
}
}
});
otp_2.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
//
if(editable.length() > 0) {
otp_2.clearFocus();
otp_3.requestFocus();
otp_3.setCursorVisible(true);
}
}
});
otp_3.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
if(editable.length() > 0) {
otp_3.clearFocus();
otp_4.requestFocus();
otp_4.setCursorVisible(true);
}
}
});
回答6:
You can use use a hidden EditText receive input, four TextView to display the password.
example:
dialog_passworld.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="10dip"
android:paddingLeft="20dip"
android:paddingRight="20dip"
android:paddingTop="10dip" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Please enter a password"
android:textSize="16sp" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="40dip"
android:layout_marginTop="15dip" >
<EditText
android:id="@+id/passcode"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:id="@+id/passcode_container"
android:layout_width="match_parent"
android:layout_height="40dip"
android:background="@drawable/password_border" >
<TextView
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@android:color/transparent"
android:gravity="center"
android:textSize="18sp"
android:textStyle="bold" />
<View
android:layout_width="1px"
android:layout_height="match_parent"
android:background="@android:color/darker_gray" />
<TextView
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@android:color/transparent"
android:gravity="center"
android:textSize="16sp"
android:textStyle="bold" />
<View
android:layout_width="1px"
android:layout_height="match_parent"
android:background="@android:color/darker_gray" />
<TextView
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@android:color/transparent"
android:gravity="center"
android:textSize="16sp"
android:textStyle="bold" />
<View
android:layout_width="1px"
android:layout_height="match_parent"
android:background="@android:color/darker_gray" />
<TextView
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@android:color/transparent"
android:gravity="center"
android:textSize="16sp"
android:textStyle="bold" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
PasswordDialogBuilder.java
public class PasswordDialogBuilder extends AlertDialog.Builder {
public PasswordDialogBuilder(Context context) {
super(context, displayMetrics, eventManager);
View contentView = LayoutInflater.from(context).inflate(R.layout.dialog_password, null);
LinearLayout passcodeContainer = (LinearLayout) contentView.findViewById(R.id.passcode_container);
final List<TextView> passwordViews = new ArrayList<TextView>();
int childCount = passcodeContainer.getChildCount();
for (int i = 0; i < childCount; i++) {
View childView = passcodeContainer.getChildAt(i);
if (childView instanceof TextView) {
passwordViews.add((TextView) childView);
}
}
final int passwordCount = passwordViews.size();
EditText passwordView = (EditText) contentView.findViewById(R.id.passcode);
passwordView.setFilters(new InputFilter[] {new InputFilter.LengthFilter(passwordCount)});
passwordView.setInputType(EditorInfo.TYPE_CLASS_NUMBER);
passwordView.setCursorVisible(false);
passwordView.setTextColor(Color.TRANSPARENT);
passwordView.setBackgroundColor(Color.TRANSPARENT);
passwordView.setSingleLine();
passwordView.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {
int passwordLength = s.length();
for (int i = 0; i < passwordCount; i++) {
TextView passcodeView = passwordViews.get(i);
if (i < passwordLength) {
passcodeView.setText(String.valueOf(s.charAt(i)));
} else {
passcodeView.setText(StringUtils.EMPTY);
}
}
if (positiveButton != null) {
positiveButton.setEnabled(passwordLength == passwordCount);
}
}
});
setView(contentView);
}
}
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