How to use TextWatcher with EditText
up vote
1
down vote
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I'm trying to implement an app to just accept hexadecimal numbers and every 4 hexadecimal numbers must insert a space, I've managed to do this separately using TextWatcher:
1.- TextWatcher only accepts hexadecimal numbers:
public void onTextChanged(CharSequence s, int start, int before, int count) {
String str = s.toString();
if (str.isEmpty()) {
mTextoEditor2.append(newStr);
newStr = "";
} else if (!str.equals(newStr)) {
newStr = str.replaceAll("[^A-F0-9a-f]", "");
mTextoEditor2.setText("");
}
}
2.- TextWatcher inserts a space every 4 characters:
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (count == 4)
{
mTextoEditor2.setText(mTextoEditor2.getText()+" ");
mTextoEditor2.setSelection(mTextoEditor2.getText().length());
}
}
But now, I cannot unite both into one in a single TextWatcher. Could someone please help me resolve this issue?
textwatcher
edited Nov 9 at 22:52
Joel
1,6086719
asked Nov 9 at 15:19
W1ll
165
add a comment |
up vote
1
down vote
favorite
I'm trying to implement an app to just accept hexadecimal numbers and every 4 hexadecimal numbers must insert a space, I've managed to do this separately using TextWatcher:
1.- TextWatcher only accepts hexadecimal numbers:
public void onTextChanged(CharSequence s, int start, int before, int count) {
String str = s.toString();
if (str.isEmpty()) {
mTextoEditor2.append(newStr);
newStr = "";
} else if (!str.equals(newStr)) {
newStr = str.replaceAll("[^A-F0-9a-f]", "");
mTextoEditor2.setText("");
}
}
2.- TextWatcher inserts a space every 4 characters:
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (count == 4)
{
mTextoEditor2.setText(mTextoEditor2.getText()+" ");
mTextoEditor2.setSelection(mTextoEditor2.getText().length());
}
}
But now, I cannot unite both into one in a single TextWatcher. Could someone please help me resolve this issue?
textwatcher
edited Nov 9 at 22:52
Joel
1,6086719
asked Nov 9 at 15:19
W1ll
165
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I'm trying to implement an app to just accept hexadecimal numbers and every 4 hexadecimal numbers must insert a space, I've managed to do this separately using TextWatcher:
1.- TextWatcher only accepts hexadecimal numbers:
public void onTextChanged(CharSequence s, int start, int before, int count) {
String str = s.toString();
if (str.isEmpty()) {
mTextoEditor2.append(newStr);
newStr = "";
} else if (!str.equals(newStr)) {
newStr = str.replaceAll("[^A-F0-9a-f]", "");
mTextoEditor2.setText("");
}
}
2.- TextWatcher inserts a space every 4 characters:
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (count == 4)
{
mTextoEditor2.setText(mTextoEditor2.getText()+" ");
mTextoEditor2.setSelection(mTextoEditor2.getText().length());
}
}
But now, I cannot unite both into one in a single TextWatcher. Could someone please help me resolve this issue?
textwatcher
edited Nov 9 at 22:52
Joel
1,6086719
asked Nov 9 at 15:19
W1ll
165
I'm trying to implement an app to just accept hexadecimal numbers and every 4 hexadecimal numbers must insert a space, I've managed to do this separately using TextWatcher:
1.- TextWatcher only accepts hexadecimal numbers:
public void onTextChanged(CharSequence s, int start, int before, int count) {
String str = s.toString();
if (str.isEmpty()) {
mTextoEditor2.append(newStr);
newStr = "";
} else if (!str.equals(newStr)) {
newStr = str.replaceAll("[^A-F0-9a-f]", "");
mTextoEditor2.setText("");
}
}
2.- TextWatcher inserts a space every 4 characters:
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (count == 4)
{
mTextoEditor2.setText(mTextoEditor2.getText()+" ");
mTextoEditor2.setSelection(mTextoEditor2.getText().length());
}
}
But now, I cannot unite both into one in a single TextWatcher. Could someone please help me resolve this issue?
textwatcher
textwatcher
edited Nov 9 at 22:52
Joel
1,6086719
asked Nov 9 at 15:19
W1ll
165
edited Nov 9 at 22:52
Joel
1,6086719
asked Nov 9 at 15:19
W1ll
165
edited Nov 9 at 22:52
Joel
1,6086719
edited Nov 9 at 22:52
Joel
1,6086719
edited Nov 9 at 22:52
Joel
1,6086719
1,6086719
asked Nov 9 at 15:19
W1ll
165
asked Nov 9 at 15:19
W1ll
165
asked Nov 9 at 15:19
W1ll
165
165
add a comment |
add a comment |
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