OK, I am working on an App that has a page with a listview and a edittext box at top. As you type things into the edittext box it will filter what items are shown in the listview. The problem I am having is with the fast scroll icon that appears on the side of the slider.
When the page first loads NO MATTER what I do the fast scroll slider icon will not appear on the screen. Then I click in the edit text box and type one character and then erase it and now my fast scroll slider icon will appear.
First load no fast scroll icon.
Edittext box and then erase text and fast scroll icon appears.
www.un.org/chinese/ga 除此以外,我还以人工方式将其编成法典,做了一半的工作。
No matter I change I still get the same behavior, unless I remove it complete from the code and xml and then it will stop working on the second page. I have tried cleaning my project and still no good. I am leaning towards it being a bug in android or I am missing something extremely simple.
Here is my code.
public class SearchByFood extends ParentClass
{
private ListView lv1;
private EditText ed;
int textlength = 0;
private ArrayList<String> arr_sort = new ArrayList<String>();
private ArrayList<String> foods = new ArrayList<String>();
private LayoutInflater mInflater;
private ArrayList<Food> foodList;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.search_by_food);
setTextTitle("Search by Food");
lv1 = (ListView) findViewById(R.id.ListView01);
ed = (EditText) findViewById(R.id.EditText01);
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
DataLayerFunctions d = new DataLayerFunctions(getApplicationContext());
foodList = d.selectFoodsWithSubstitutes();
for (Food f : foodList)
{
// this is to build a ArrayList<String> to pass to the setAdapter
Log.d("SearchByFood", "FoodName: " + f.getFood_Name());
foods.add(f.getFood_Name());
}
ArrayAdapter<String> firstAdapter = new ArrayAdapter<String>(SearchByFood.this, R.layout.search_food_listview, foods);
lv1.setAdapter(firstAdapter);
lv1.setFastScrollEnabled(true);
ed.addTextChangedListener(new TextWatcher()
{
public void afterTextChanged(Editable s)
{
}
public void beforeTextChanged(CharSequence s, int start, int count, int after)
{
}
public void onTextChanged(CharSequence s, int start, int before, int count)
{
textlength = ed.getText().length();
arr_sort.clear();
for (String f : foods)
{
if (textlength <= f.length())
{
if (f.toString().toLowerCase().contains((CharSequence) ed.getText().toString().toLowerCase()))
{
Log.d("STRING", "STRING: " + f.toString() + " contains " + ed.getText());
if (ed.getText().length() > 0)
{
String newString = boldMyString(f, ed.getText().toString());
arr_sort.add(newString);
}
else
{
arr_sort.add(f);
}
}
}
}
// if empty add a no foods found
if (arr_sort.isEmpty())
{
arr_sort.add("No Foods Found");
}
// Load array
// lv1.setAdapter(new
ArrayAdapter<String> adapter = new ArrayAdapter<String>(SearchByFood.this, R.layout.search_food_listview, arr_sort)
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View row;
if (null == convertView)
{
row = mInflater.inflate(R.layout.search_food_listview, null);
}
else
{
row = convertView;
}
TextView tv = (TextView) row.findViewById(android.R.id.text1);
tv.setText(Html.fromHtml(getItem(position)));
// tv.setText(getItem(position));
return row;
}
};
lv1.setAdapter(adapter);
}
private String boldMyString(String foodName, String guess)
{
int gLength = guess.length();
ArrayList<Integer> results = new ArrayList<Integer>();
for (int i = foodName.toLowerCase().indexOf(guess.toLowerCase()); i >= 0; i = foodName.toLowerCase()
.indexOf(guess.toLowerCase(), i + 1))
{
System.out.println("TEST:" + i);
results.add(i);
}
// Count value is for words that have 2 or more values of guess
// in them.
int count = 0;
for (int i : results)
{
StringBuffer s1 = new StringBuffer(foodName);
s1.insert(i + count, "<b>");
count = count + 3;
s1.insert(i + count + gLength, "</b>");
count = count + 4;
foodName = s1.toString();
System.out.println("FOOD NAME:" + i + ":" + foodName);
}
return foodName;
}
});
// This is what actually does stuff when you click on a listview item.
lv1.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
// Strip out the bold tags
String clicked = (String) lv1.getItemAtPosition(position);
clicked = clicked.replaceAll("<b>", "");
System.out.println("Clicked" + clicked);
clicked = clicked.replaceAll("</b>", "");
// Find the Food ID match and pass the food id to the
// fooddisplay page
for (Food f : foodList)
{
if (null != clicked && clicked.equals(f.getFood_Name()))
{
Intent intent = new Intent(SearchByFood.this, SubstituteDisplay.class);
intent.putExtra("FoodID", f.getFood_ID());
startActivity(intent);
}
}
}
});
}
@Override
public void onBackPressed()
{
final Intent intent = new Intent(this, MasterTemplateActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
this.startActivity(intent);
return;
}
}
Again, any help as to why my fast scroll icon doesn t show up at first would be much appreciated. It is a small thing but it is really annoying me.