I'm trying to implement an activity with an EditText that replaces some keywords with emoticons (my code is at the end).
The code works perfect except by one detail. If I type in the EditText ".sa." it is replaced by the img1, but if I want to undo it I need click 4 times the delete before the image disappear (once for each char in the key word).
Is the first time I work with Spannables and don´t know how to fix it. Can you help me?
public class MytestActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
EditText et = (EditText) findViewById(R.id.editText1);
et.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) {
getSmiledText(MytestActivity.this, s);
Log.e("",s.toString());
}
});
}
private static final HashMap<String, Integer> emoticons = new HashMap<String, Integer>();
static {
emoticons.put(".sa.", R.drawable.img1);
emoticons.put(".sb.", R.drawable.img2);
}
public static Spannable getSmiledText(Context context, Editable builder) {
int index;
for (index = 0; index < builder.length(); index++) {
for (Entry<String, Integer> entry : emoticons.entrySet()) {
int length = entry.getKey().length();
if (index + length > builder.length())
continue;
if (builder.subSequence(index, index + length).toString().equals(entry.getKey())) {
builder.setSpan(new ImageSpan(context, entry.getValue()), index, index + length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
index += length - 1;
break;
}
}
}
return builder;
}
}
You could try something like this:
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
try {
if (count == 1 && after == 0 &&// tried to delete a char
s.length() >= ".sa.".length() && // string could contain an emoticon
s.subSequence(start - ".sa.".length() + 1, start + 1).toString().equals(".sa.")// the last string is .sa.
) {
et.setText(s.subSequence(0, s.length() - ".sa.".length()));
}
} catch (Exception e) {
}
}
This will give another couple of problems (you will see) and it is far from being a gold solution; I only wanted to give you an idea of how to do it. Of course, you have to replace the way in which the ".sa."
string is being used; I hardcoded it for the sake of simplicity.
How about catch backspace
by listener event and do it 3 times more (or remove image space maually)?
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