I got a ListActivity. I update the activity using onContentChanged() API. My problem is that each time I call the above API the list scrolls to the top. Is there any easy way to turn this "feature" off?
View 1 Replies
I would like to write a rather simple content application which displays a list of textual items (along with a small pic).I have a standard menu in which each menu item represents a different category of textual items (news, sports, leisure etc.).Pressing a menu item will display a list of textual items of this category.Now, having a separate ListActivity for each category seems like an overkill (or does it?)
Naturally, it makes much more sense to use one ListActivity and replace the data of its adapter when each category is loaded.My concern is when "back" is pressed. The adapter is loaded with items of the current category and now I need to display list of the previous category (and enable clicking on list items too)
Since I have only one activity - I thought of backup and load mechanism in onPause() and onResume() functions as well as making some distinction whether these function are invoked as a result of a "new" event (menu item selected) or by a "back" press.This seems very cumbersome for such a trivial usage.Am I missing something here?
I have a list Activity 4 which i have extended the BaseAdapter and the getview looks like this.
public View getView(int position, View convertView, ViewGroup parent) {
View row=null;
for(int i=0;i<10; {
row = convertView;
if(row==null) {
LayoutInflater inflater = mContext.getLayoutInflater();
row = inflater.inflate(R.layout.parsed,null); }
TextView id = (TextView)row.findViewById(R.id.id);
id.setText(idvector.elementAt(position));
TextView photo = (TextView)row.findViewById(R.id.photo);....
Is it possible to have a list activity that dosen't finish? i.e. if you scroll to the end of the list then the start of the list begins again? It's be best if you could also disable the scroll bar.
View 4 Replies View RelatedI have some problems when creating a ListActivity.
I have a listview and some other widgets and my listview is filled with a custom adapter.
You can see the images of this activity here:
http://www.grabup.com/uploads/ecd0d0eeb7b947e98b2e0d6c1be5478f.png?di...
Now the problem is. I have a scrollview and all the other views and widgets are placed inside of it. As you can see on the image, I don't see all of my 6 comments (that is the list). When i don't place the scrollview the height of the list is perfect (i have set android:layout_height to wrap_content (to my listview and parent LinearLayout). This is perfect but I have other widgets under the list and when the list reaches the bottom of the screen I can't to scroll to view my other widgets..
How can I fix this? I can set the height of the linearlayout manually but the problem is that the height doesnt has to be the same all the time (it loads the commens from my web service).. It has to fit the height of all the comments (like wrap_content normally does..)
Here is a part of the code with the layout and listview..
CODE:............................
I ported miui us over to the att s3. One issue I have is when an incoming call takes place it does not show the "1" like it should 1-555-555-5555 instead it shows +55 55 55555.
SAMSUNG-SGH-I747
I'm trying to display an image before the list in a listactivity. If I put an ImageView before the ListView, then only the list is displayed..
View 1 Replies View Relatedi want to know how to refresh the ListActivity when i change/add data to the list wich is dispayed.i first thougt the ListAdapter would know when the list is changed but when i add elements to the list there is no update, only when i close the activity and reopen it i see the changes.so i searched for any update() refesh() or something like that method but there is none.so it seem i didnt get the concept, can someone help me please?
View 2 Replies View RelatedWhat is the best way to display a database queries results on the screen using ListActivity? I need the db queries to run in the background and I also need to be able to make different queries and refresh the screen according to the query result. I am using the ListActivity class with a SimpleCursorAdapter in order to display the db queries result on the screen. At the moment, I am doing the db queries at the background using AsyncTask, when getting the results I want the list to be updated immediately, but I can't find a good way to do it. It worked only when I used the changeCursor(cursor) function to set the adapter to a new cursor with the new results. But I don't think this is a good solution since it seems to stuck the UI for a while. I also found some posts about notifyDataSetChanged() but I am not sure if/how/when I should be using it with a SimpleCursorAdapter to make the view refresh.
View 2 Replies View RelatedI have a simple ListActivity midlet. It populates the list using a String array which is passed to the setListAdapter method. code...
However my question is, how is it possible to modify the properties of the list so if I know "etc" and "dev" are directories and I want to change the text colour to reflect that it is a directory how can I do this ?
Can anyone point me to any API's ?
I'm having a problem with my ListView in a ListActivity with a Custom ArrayAdapter.
When the ListActivity becomes hidden (paused, whatever), the data that was present in the ArrayAdpater seems to go away. Rotation works fine, but I am only assigning the array in the ArrayAdapter in the onCreate(), nowhere else. The array is stored in a global static so the array itself should be fine. but the ListView seems to be pitching the array somewhere after the onCreate in the Activity Lifecycle.
I'm thinking the array should be re-assigned on one of the onResume(), onStart() or onRestart(), but I'm looking for a more concrete reason as this happens only rarely and never with my Cursor based Adapters.
I have a working ListActivity class. Each of the list item consists of an ImageView and a TextView. However, when I try to replace the ImageView with ImageButton, The list becomes unselectable. The onListItemClick or any other function no longer get called when press a list item (Although the track ball can still focus a list item, but nothing more can be done). I have searched the forum and also the internet and failed to find any such working example, apart from one guy reporting a similar problem but with no answer.Code...
View 6 Replies View RelatedI got the Vibrant today and the default web browser, although fast, is frustrating to navigate with all the constant zooming and scrolling necessary to read through the content. What's the best mobile web app for this phone?
View 11 Replies View RelatedTrying to implement simple dictionary. I want to make it so while the user is typing in the EditText box the list to scroll automatically to the best match. I don't want it to filter the list. For example if the user types "s" in the EditText I want the first word that s/he sees under the EditText box to be the first word in the dictionary that starts with "s." But the user should still be able to slide up and down and to be able to see the entire list of words. It is basically like a go to functionality. I used ArrayList to store my list of words. The data is in res/raw/data.xml file. Here is my onCreate method
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
wordListView = (ListView)findViewById(R.id.wordList);
myEditText = (EditText)findViewById(R.id.myEditText);
words = new ArrayList<Word>();
arrAdap = new ArrayAdapter<Word>(this, android.R.layout.simple_list_item_1, words);
wordListView.setAdapter(arrAdap); try {
InputStream inSource = getResources().openRawResource(R.raw.data);
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = builder.parse(inSource, null);
NodeList wordsList = doc.getElementsByTagName("eng-bg");
int length = wordsList.getLength();
for(int i = 0; i<length; i++) {
Element entry = (Element)wordsList.item(i);
Element eng = (Element)entry.getElementsByTagName("english").item(0);
Element bul = (Element)entry.getElementsByTagName("bulgarian").item(0);
Element id = (Element)entry.getElementsByTagName("ID").item(0);
String english = eng.getFirstChild().getNodeValue();
String bulgarian = bul.getFirstChild().getNodeValue();
int wordId = Integer.parseInt(id.getFirstChild().getNodeValue());
Word word = new Word(bulgarian, english, wordId);
addNewWord(word);
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}wordListView.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {
selectedWord = words.get(pos);
showDialog(TRANS_DIALOG);
myEditText.setText(selectedWord.getEnglish());
myEditText.addTextChangedListener(new TextWatcher(){
public void onTextChanged(CharSequence s, int start, int before, int count) {
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
I am having a listview in my App which shows perfectly in Portrait mode. But when I change orientation to landscape, sometimes the width remains as that of Portrait mode. Even the scrollbar for the list comes at the center and remaining part of the screen remains blacked out. This happens only with the list view. Other views show perfectly. I have designed the layouts such that the Portrait layouts look feel proportionate in landscape mode. I want to avoid restarting the activity so I have not put the layouts in the landscape folder. I tried invalidating the listview in onConfigurationChanged() but of no use. When I navigate in the list in landscape mode, the width automatically gets adjusted.
View 2 Replies View RelatedI have used tab view and inside frame first view is ListView.My list view has white and blue background alternately like 1st is white, 2nd blue, 3rd white, 4th blue.I have tried disabing cachehint and even using it. But when i scroll the alternate colors are broken like we can see 2 consecutive in white or blue. Sometimes even 3 in same color. This happens when i scroll the list.
View 2 Replies View RelatedI am using PDANET and tethered to my laptop. My laptop is sharing my connection with my XBOX 360 at work (lol). Works unbelievably well.
My only problem is, I need to stop my a-hole friends from calling me while I'm at work playing some games.Is there a way to prevent phone calls and text messages to inhibit those from kicking my data connection off while tethered using PDANET?I have done searches all afternoon and can't find anything relating to it.Please don't suggest Airplane mode.
I am trying to teach myself the basics of Android dev. At the moment I am experimenting with home screen widgets. I would like to create a simple widget that lists all my bookmarks. Somewhere in my googling I read that ListView is not usable in a widget. What's the best way to display a scrolling list in a widget?
View 1 Replies View RelatedWe're working with a pre-release device running V2.1_update1 We have a ListView in the middle of a screen with the height set to wrap-content. On all other devices, as long as there is room on the screen, this control does not scroll--or if it does scroll, it only scrolls to the limits of the entries in the list. On this new device, there is definitely room for the list so it should not be scrolling at all, but the ListView scrolls and seems to have elastic whitespace above and below (and separator lines above the top item and below the bottom item). Thus, when you drag down, the whole list scrolls down within the limits of the view's bounds (i.e. it clips there) and then when you release the drag, the list springs back up to its normal position. This latter behavior makes it seem like there is deliberate code that has been put in for this--but we certainly didn't do that. What could cause this? Is there a setting that has defaulted one way on this device that defaults opposite on other devices?
View 2 Replies View RelatedI am new to android, and ended up (have to) ask a question here, Let's make it simple, I simply want to make my own TextView-like (MyView extends View). This is my code:
public class MyView extends View { private Paint mPaint; private String mText;
private Bitmap mBitmap1; private Bitmap mBitmap2; public MyView(Context context) {
super(context); initView(); } public MyView(Context context, AttributeSet attrs) {
super(context, attrs); initView(); } private final void initView() {
mPaint = new Paint(); } public void setText(String text) { mText = text;
} @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = measureWidth(widthMeasureSpec);
if (mBitmap1 == null) initBitmap1(measuredWidth);
int measuredHeight = measureHeight(heightMeasureSpec);
setMeasuredDimension(measuredWidth, measuredHeight);
} private void initBitmap1(int measuredWidth) {
mBitmap1 = Bitmap.createBitmap(measuredWidth, Fonts.getHeight(), Bitmap.Config.ARGB_4444);
Canvas canvas = new Canvas(mBitmap1 ); canvas.drawText(mText, 0, 0, mPaint);
} private void initBitmap2() { mBitmap2 = Bitmap.createBitmap(30,
Fonts.getHeight(), Bitmap.Config.ARGB_4444); Canvas canvas = new Canvas(mBitmap2;
canvas.drawText(mText, 0, 0, mPaint);}
private int measureWidth(int widthMeasureSpec) { int measuredWidth = 0;
int specWidthMode = MeasureSpec.getMode(widthMeasureSpec);
int specWidthSize = MeasureSpec.getSize(widthMeasureSpec);
if (specWidthMode == MeasureSpec.EXACTLY) { measuredWidth = specWidthSize;
} else { measuredWidth = getWidth(); if (specWidthMode == MeasureSpec.AT_MOST) {
measuredWidth = Math.min(measuredWidth, specWidthSize);
} } return measuredWidth; }
private int measureHeight(int heightMeasureSpec) {
int measuredHeight = 0; int specHeightMode = MeasureSpec.getMode(heightMeasureSpec);
int specHeightSize = MeasureSpec.getSize(heightMeasureSpec);
if (specHeightMode == MeasureSpec.EXACTLY) {
measuredHeight = specHeightSize; } else { measuredHeight = 80;
if (specHeightMode == MeasureSpec.AT_MOST) { measuredHeight = Math.min(measuredHeight, specHeightSize);
} } return measuredHeight; }
@Override protected void onDraw(Canvas canvas) {
super.onDraw(canvas); canvas.drawBitmap(mBitmap1, getLeft(), 0, mPaint);
initBitmap2(); canvas.drawBitmap(mBitmap2, getLeft(), 30, mPaint); } }
It seems like the best way to create a horizontal scrolling list of images is to use the Gallery widget. I need to display sidebar text with each image.The examples I have seen showing how to use the Gallery widget only show images. Is it possible to display a list of images+text descriptions in a Gallery, and if it is, does anyone have an example of how to do this?
View 4 Replies View RelatedI have a list of 70 text items with image icons(which are stored in drawables folder).
If I launch application the first time and scroll the list slowly - the exception doesn't occur.
When the application is launched the first time and I scroll the list with 'fling' action the following exception occurs:
COD:.....................
After that, if I kill the application with DDMS, start it again and scroll it with 'fling' action, exception doesn't occur. So the exception arises only if application is installed and launched the first time.
Here is the adapter I use for the list:
CODE:................
Is there a way to avoid the exception? Should I catch the exception and escape the memory somehow?
I have problem with the List view scrolling. Here I have a list view contains more 50 items. I am setting the list view background as transparent. While scrolling the list view it is showing with black background. Can any one tell me how to remove this black portion?
View 3 Replies View RelatedI know that when a row is selected in list view, the function on List Item Click() is called. I want to know which function is called when a row in List View is highlighted(not selected).
View 1 Replies View RelatedThere must be a way to do this. How can you tell a ListView that has a header to not scroll it when the user scrolls the contents? I want it to stay in a "stuck" position so that the user can always see what column the content applies to.
View 9 Replies View RelatedI am new to android, and ended up (have to) ask a question here. Let's make it simple, I simply want to make my own TextView-like (MyView extends View), This is my code:
public class MyView extends View { private Paint mPaint;
private String mText; private Bitmap mBitmap1; private Bitmap mBitmap2;
public MyView(Context context) { super(context); initView(); }
public MyView(Context context, AttributeSet attrs) { super(context, attrs);
initView(); } private final void initView() { mPaint = new Paint(); }
public void setText(String text) { mText = text; }
@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = measureWidth(widthMeasureSpec);
if (mBitmap1 == null) initBitmap1(measuredWidth);
int measuredHeight = measureHeight(heightMeasureSpec);
setMeasuredDimension(measuredWidth, measuredHeight);
}
private void initBitmap1(int measuredWidth) {
mBitmap1 = Bitmap.createBitmap(measuredWidth, Fonts.getHeight(), Bitmap.Config.ARGB_4444);
Canvas canvas = new Canvas(mBitmap1 ); canvas.drawText(mText, 0, 0, mPaint);
} private void initBitmap2() {
mBitmap2 = Bitmap.createBitmap(30, Fonts.getHeight(), Bitmap.Config.ARGB_4444);
Canvas canvas = new Canvas(mBitmap2); canvas.drawText(mText, 0, 0, mPaint);
} private int measureWidth(int widthMeasureSpec) {
int measuredWidth = 0; int specWidthMode = MeasureSpec.getMode(widthMeasureSpec);
int specWidthSize = MeasureSpec.getSize(widthMeasureSpec);
if (specWidthMode == MeasureSpec.EXACTLY) { measuredWidth = specWidthSize;
} else { measuredWidth = getWidth(); if (specWidthMode == MeasureSpec.AT_MOST) {
measuredWidth = Math.min(measuredWidth, specWidthSize);
} } return measuredWidth; }
private int measureHeight(int heightMeasureSpec) {
int measuredHeight = 0; int specHeightMode = MeasureSpec.getMode(heightMeasureSpec);
int specHeightSize = MeasureSpec.getSize(heightMeasureSpec);
if (specHeightMode == MeasureSpec.EXACTLY) { measuredHeight = specHeightSize;
} else { measuredHeight = 80; if (specHeightMode == MeasureSpec.AT_MOST) {
measuredHeight = Math.min(measuredHeight, specHeightSize);
} } return measuredHeight;
} @Override protected void onDraw(Canvas canvas) {
super.onDraw(canvas); canvas.drawBitmap(mBitmap1, getLeft(), 0, mPaint);
initBitmap2(); canvas.drawBitmap(mBitmap2, getLeft(), 30, mPaint);
} }
In my code, I populate some numbers of MyView (let's say 20) in a ListActivity. My question is why mBitmap1's order changes randomly while i scroll (up-down) fastly (if I scroll slowly, this problem not occur)? mBitmap2 stays where those should be.
The Contacts app shows a button on the side of the screen that acts as a little thumb to allow you to quickly scroll the big list. I have a very long list that would benefit from this navigation behavior, but can't find any documentation as to how to enable it.
Is it a behavior that's built into the SDK, or must I write it myself?
I am new to Android development and currently facing some problem. I need to change the Color for the pop up letter while scrolling through Contact list with more than 40 contacts. Currently it is showing in Black, I need to make it in White font.
View 2 Replies View RelatedI have a long scrolling list of EditText items created by a SimpleCursorAdapter and prepopulated with values from an SQLite database. I make this by: cursor = db.rawQuery("SELECT _id, criterion, localweight, globalweight FROM " + dbTableName + " ORDER BY criterion", null); startManagingCursor(cursor); mAdapter = new SimpleCursorAdapter(this, R.layout.weight_edit_items, cursor, new String[]{"criterion","localweight","globalweight"}, new int[]{R.id.criterion_edit, R.id.localweight_edit, R.id.globalweight_edit}); is.setListAdapter(mAdapter); The scrolling list is several emulator screens long. The items display OK - scrolling through them shows that each has the correct value from the database. I can make an edit change to any of the EditTexts and the new text is accepted and displayed in the box. if I then scroll the list far enough to take the edited item off the screen, when I scroll back to look at it again its value has returned to what it was before I made the changes, ie. my edits have been lost. In trying to sort this out, I've done a getText to look at what's in the EditText after I've done my edits (and before a scroll) and getText returns the original text, even though the EditText is displaying my new text. It seems that the EditText has only accepted my edits superficially and they haven't been bound to the EditText, meaning they get dropped when scrolled off the screen. Can anyone please tell me what's going on here and what I need to do to force the EditText to retain its edits?
View 1 Replies View RelatedI have a ListView in my app that has a background image. All of the rows are a semi transparent white (#35FFFFFF). Whenever I scroll the list, the rows turn a light green that obscures the background image until I stop scrolling (usually--sort of unpredictable). Sometimes it flickers between the background image/color and the green. And yes, I have set the cache color hint to #00000000. Any advice about this would be appreciated.
ListView xml:
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="7px"
android:cacheColorHint="#00000000"..............