I'm currently dealing with AutoCompleteTextView, I think I set all the necessary stuffs, like the adapter, but when I type the dropdown menu is not shown. Here my code:
public class TouchEditText extends AutoCompleteTextView {
TouchEditTextListener listener;
private View root;
private AutoCompleteTextView t;
private Lexer lexer;
private int currentStartLine;
private int currentEndLine;
private boolean modified;
private final Handler handler = new Handler();
private final Runnable updateAction =
new Runnable()
{
@Override
public void run()
{
Editable e = getText();
highlightTextChanged(e);
}
};
interface TouchEditTextListener {
public void onTyped(String text);
}
public TouchEditText(Context context) {
super(context);
init(null, context);
}
public TouchEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs, context);
}
public TouchEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs, context);
}
private void init(AttributeSet attrs, Context context) {
this.modified = true;
this.setThreshold(1);
t = this;
setFilters(new InputFilter[]{new InputFilter() {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend ) {
int indentationCount = 0;
if (source.length() != 0) {
if (source.charAt(source.length() - 1) == '\n') {
CharSequence line;
int currentLineNumber = getCurrentCursorLine();
int startPos = getLayout().getLineStart(currentLineNumber);
int endPos = getLayout().getLineEnd(currentLineNumber);
line = getText().subSequence(startPos, endPos);
indentationCount = 0;
for (char c : line.toString().toCharArray()) {
if (c == ' ') {
indentationCount++;
} else {
break;
}
}
char last = line.charAt(line.length()-2);
if (last == '(' || last == '[' || last == '{') {
indentationCount += 4;
}
}
}
String indentation = "";
for(int i = 0; i<indentationCount; i++) {
indentation += " ";
}
return source+indentation;
}
}});
ViewTreeObserver vto = getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
updateBoundaries();
Editable highlighted = highlightText(getText());
setText(highlighted);
}
});
this.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) {
handler.removeCallbacks(updateAction);
if(!modified) {
return;
}
listener.onTyped(getText().toString());
handler.postDelayed(updateAction, 100);
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
public void setLexer(Lexer lexer) {
this.lexer = lexer;
List<String> allHints = new ArrayList<>();
allHints.addAll(lexer.getPrimitiveTypesList());
allHints.addAll(lexer.getKeywordsList());
setHintsList(allHints);
}
//http://stackoverflow.com/questions/7627347/android-edittext-get-current-line
private int getCurrentCursorLine()
{
int selectionStart = Selection.getSelectionStart(getText());
Layout layout = getLayout();
if (!(selectionStart == -1)) {
return layout.getLineForOffset(selectionStart);
}
return -1;
}
private boolean updateBoundaries() {
int height = root.getHeight();
int scrollY = root.getScrollY();
Layout layout = getLayout();
int temp = currentStartLine;
currentStartLine = layout.getLineForVertical(scrollY);
currentEndLine = layout.getLineForVertical(scrollY + height);
return temp != currentStartLine;
}
public void setRoot(View root) {
this.root = root;
}
private void highlightTextChanged(Editable e) {
modified = false;
highlightText(e);
modified = true;
}
private void clearAllSpans(Editable editable) {
{
ForegroundColorSpan spans[] = editable.getSpans(0, editable.length(), ForegroundColorSpan.class);
for(int n = spans.length; n-- > 0;) {
editable.removeSpan(spans[n]);
}
}
}
public void setListener(TouchEditTextListener listener) {
this.listener = listener;
}
public void initText(String content) {
setText(content);
}
private Editable getVisibleText() {
Editable content = new SpannableStringBuilder();
for(int i = currentStartLine; i<=currentEndLine; i++) {
content.append(getText().subSequence(getLayout().getLineStart(i), getLayout().getLineEnd(i)));
}
return content;
}
public Editable highlightText(Editable editable) {
Editable visible = getVisibleText();
clearAllSpans(editable);
lexer.tokenize(editable, visible);
return editable;
}
@Override
protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
if(updateBoundaries()) {
handler.removeCallbacks(updateAction);
if(!modified) {
return;
}
handler.postDelayed(updateAction, 1);
}
}
public void forceSyntax(Syntax s) {
lexer.forceSyntax(s);
highlightText(getText());
}
private void setHintsList(List<String> hints) {
String[] hintsArray = new String[hints.size()];
for(int i = 0; i < hints.size(); i++) {
hintsArray[i] = hints.get(i);
}
String[] a = {"if", "protected", "prot"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this.getContext(), android.R.layout.simple_dropdown_item_1line, hintsArray);
this.setAdapter(adapter);
}
I don't know if could be a problem that I manually set a TextChangedListener. Thank you
EDIT: Here the layout
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/codeScrollView"
android:fillViewport="true">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="@drawable/lines_stroke"
android:textColor="@android:color/white"
android:text="@string/first_line"
android:textSize="15dp"
android:gravity="right"
android:paddingLeft="15dp"
android:paddingRight="5dp"
android:id="@+id/edit_code_lines_view"/>
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:scrollHorizontally="true" >
<com.example.green.bachelorproject.customViews.codeEditView.TouchEditText
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/code_stroke"
android:gravity="top"
android:textColor="@android:color/white"
android:textSize="15dp"
android:inputType="textMultiLine|textNoSuggestions"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:textCursorDrawable="@drawable/cursor_color"
android:scrollHorizontally="true"
android:id="@+id/edit_code_content_view"/>
</HorizontalScrollView>
</LinearLayout>
</ScrollView>
I was thinking that this line
android:inputType="textMultiLine|textNoSuggestions"
was causing the problem, but I removed it and still not working
