I have an app where I want to be able to show a TextView (or EditText) that allows the user to select some text, then press a button to have something done with that text. Implementing this on Android versions prior to Honeycomb is no problem but on Honeycomb and above the default long-press action is to show an action bar with Copy/Cut/Paste options. I can intercept long-press to show my own action bar, but then I do not get the text selection handles displayed.
Once I have started my own ActionMode how do I get the text selection handles displayed?
Here is the code I'm using to start the ActionMode, which works except there are no text selection handles displayed:
public boolean onLongClick(View v) {
if(actionMode == null)
actionMode = startActionMode(new QuoteCallback());
return true;
}
class QuoteCallback implements ActionMode.Callback {
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.quote, menu);
return true;
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch(item.getItemId()) {
case R.id.quote:
Log.d(TAG, "Selected menu");
mode.finish();
// here is where I would grab the selected text
return true;
}
return false;
}
public void onDestroyActionMode(ActionMode mode) {
actionMode = null;
}
}
I figured out the answer to my own question; TextView (and therefore EditText) has a method setCustomSelectionActionModeCallback()
which should be used instead of startActionMode()
. Using this enables customisation of the menu used by TextView for text selection. Sample code:
bodyView.setCustomSelectionActionModeCallback(new StyleCallback());
where StyleCallback customises the text selection menu by removing Select All and adding some styling actions:
class StyleCallback implements ActionMode.Callback {
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
Log.d(TAG, "onCreateActionMode");
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.style, menu);
menu.removeItem(android.R.id.selectAll);
return true;
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
Log.d(TAG, String.format("onActionItemClicked item=%s/%d", item.toString(), item.getItemId()));
CharacterStyle cs;
int start = bodyView.getSelectionStart();
int end = bodyView.getSelectionEnd();
SpannableStringBuilder ssb = new SpannableStringBuilder(bodyView.getText());
switch(item.getItemId()) {
case R.id.bold:
cs = new StyleSpan(Typeface.BOLD);
ssb.setSpan(cs, start, end, 1);
bodyView.setText(ssb);
return true;
case R.id.italic:
cs = new StyleSpan(Typeface.ITALIC);
ssb.setSpan(cs, start, end, 1);
bodyView.setText(ssb);
return true;
case R.id.underline:
cs = new UnderlineSpan();
ssb.setSpan(cs, start, end, 1);
bodyView.setText(ssb);
return true;
}
return false;
}
public void onDestroyActionMode(ActionMode mode) {
}
}
The XML for the menu additions is:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/italic"
android:showAsAction="always"
android:icon="@drawable/italic"
android:title="Italic"/>
<item android:id="@+id/bold"
android:showAsAction="always"
android:icon="@drawable/bold"
android:title="Bold"/>
<item android:id="@+id/underline"
android:showAsAction="always"
android:icon="@drawable/underline"
android:title="Underline"/>
</menu>