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2014/10/16 ¤W¤È 08:27:23
android Programming Glossary: viewholderhttp://stackoverflow.com/questions/16789676/caching-images-and-displaying View convertView ViewGroup parent View vi convertView ViewHolder vh new ViewHolder if convertView null vi inflater.inflate R.layout.row.. ViewGroup parent View vi convertView ViewHolder vh new ViewHolder if convertView null vi inflater.inflate R.layout.row null vh.iv.. String imageUri View view public static class ViewHolder ImageView iv TextView tv tv1 ProgressBar pb row.xml xml version..
How to fire onListItemClick in Listactivity with buttons in list? http://stackoverflow.com/questions/1821871/how-to-fire-onlistitemclick-in-listactivity-with-buttons-in-list getView shown above is pretty ugly normally you should use ViewHolder pattern to avoid findViewById calls.. but you probably already..
Lazy Load images on Listview in android(Beginner Level)? [duplicate] http://stackoverflow.com/questions/2912054/lazy-load-images-on-listview-in-androidbeginner-level TextView mStatus private static boolean mBusy false static ViewHolder holder public static class EfficientAdapter extends BaseAdapter.. getView int position View convertView ViewGroup parent A ViewHolder keeps references to children views to avoid unneccessary calls.. R.layout.list_item_icon_text null Creates a ViewHolder and store references to the two children views we want to..
Android Listview with different layout for each row http://stackoverflow.com/questions/4777272/android-listview-with-different-layout-for-each-row in comment I would suggest Storing views in object called ViewHolder . It would increase speed because you won't have to call findViewById..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list context LayoutInflater inflater TextView CItv COtv static ViewHolder holder View view public DemoAdapter Activity context List String.. stub this.context context this.list list static class ViewHolder protected TextView text CItv COtv protected CheckBox checkbox.. view inflater.inflate R.layout.test_listitems null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById..
List Filter Custom Adapter dont give result http://stackoverflow.com/questions/8678163/list-filter-custom-adapter-dont-give-result getItemId int position return position private class ViewHolder TextView textView @Override public View getView int position.. getView int position View convertView ViewGroup parent ViewHolder holder null if convertView null holder new ViewHolder convertView.. ViewHolder holder null if convertView null holder new ViewHolder convertView inflater.inflate R.layout.row null holder.textView..
How did Google manage to do this? Slide ActionBar in Android application http://stackoverflow.com/questions/11234375/how-did-google-manage-to-do-this-slide-actionbar-in-android-application inflater.inflate R.layout.menu_listitem null MenuItem viewHolder new MenuItem viewHolder.label TextView rowView.findViewById.. null MenuItem viewHolder new MenuItem viewHolder.label TextView rowView.findViewById R.id.menu_label viewHolder.icon.. TextView rowView.findViewById R.id.menu_label viewHolder.icon ImageView rowView.findViewById R.id.menu_icon rowView.setTag..
Picasso loading of image spawned inside AsyncTask http://stackoverflow.com/questions/18808114/picasso-loading-of-image-spawned-inside-asynctask int position View convertView ViewGroup parent ViewHolder viewHolder null if convertView null convertView mLayoutInflater.inflate.. references to the children views we want to bind data to. viewHolder setupViewHolder convertView convertView.setTag viewHolder else.. viewHolder setupViewHolder convertView convertView.setTag viewHolder else Get the ViewHolder back to get fast access to the TextView..
Change ListView background - strange behaviour http://stackoverflow.com/questions/4583349/change-listview-background-strange-behaviour mvh public void onClick View v ViewHolder viewHolder we toggle the enabled state and also switch the the background.. switch the the background MyViewHolder mvh MyViewHolder viewHolder Channel ch Channel mvh.data ch.setSelected ch.getSelected..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list R.layout.test_listitems null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView.. null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv.. viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv TextView view.findViewById R.id.COTextView viewHolder.text..
Picasso loading of image spawned inside AsyncTask http://stackoverflow.com/questions/18808114/picasso-loading-of-image-spawned-inside-asynctask been recycled . You need to put some kind of tag in the viewholder and then check that it is still the same when you go to set..
android listview viewholder. when to use it, and when not to http://stackoverflow.com/questions/3208897/android-listview-viewholder-when-to-use-it-and-when-not-to listview viewholder. when to use it and when not to I have a ListView with a custom.. up in row 2 for example . However when I do not use the viewholder and instead call findViewById every time then the list view..
Creating ViewHolders for ListViews with different item layouts http://stackoverflow.com/questions/3514548/creating-viewholders-for-listviews-with-different-item-layouts type differently. Each Layout type should have its own viewholder for naming clarity and ease of maintainence. Name the ViewHolders..
How to implement a view holder? http://stackoverflow.com/questions/4145602/how-to-implement-a-view-holder to implement a view holder i am using a viewholder to display from a dynamic arrayadapter.it works but the data..
Double checking if fragment + view holder pattern is implemented properly http://stackoverflow.com/questions/9933783/double-checking-if-fragment-view-holder-pattern-is-implemented-properly on if you leak those references elsewhere of course. On viewholder in fragment pager You should not try to do something like the.. fragment pager You should not try to do something like the viewholder in the fragment. It will probably not hurt in this example but.. note on ViewHolder I would actually refrain from using viewholder unless I really needed it even in a listview. I have seen those..
http://stackoverflow.com/questions/16789676/caching-images-and-displaying int position return position public View getView int position View convertView ViewGroup parent View vi convertView ViewHolder vh new ViewHolder if convertView null vi inflater.inflate R.layout.row null vh.iv ImageView vi.findViewById R.id.ivv vh.pb.. position public View getView int position View convertView ViewGroup parent View vi convertView ViewHolder vh new ViewHolder if convertView null vi inflater.inflate R.layout.row null vh.iv ImageView vi.findViewById R.id.ivv vh.pb ProgressBar vi.findViewById.. View.GONE @Override public void onLoadingCancelled String imageUri View view public static class ViewHolder ImageView iv TextView tv tv1 ProgressBar pb row.xml xml version 1.0 encoding utf 8 RelativeLayout xmlns android http schemas.android.com..
How to fire onListItemClick in Listactivity with buttons in list? http://stackoverflow.com/questions/1821871/how-to-fire-onlistitemclick-in-listactivity-with-buttons-in-list constructor. And one important thing implementation of getView shown above is pretty ugly normally you should use ViewHolder pattern to avoid findViewById calls.. but you probably already know that. My custom_row.xml file is RelativeLayout with..
Lazy Load images on Listview in android(Beginner Level)? [duplicate] http://stackoverflow.com/questions/2912054/lazy-load-images-on-listview-in-androidbeginner-level ListActivity implements ListView.OnScrollListener private TextView mStatus private static boolean mBusy false static ViewHolder holder public static class EfficientAdapter extends BaseAdapter private LayoutInflater mInflater private Bitmap mIcon1 private.. int android.view.View android.view.ViewGroup public View getView int position View convertView ViewGroup parent A ViewHolder keeps references to children views to avoid unneccessary calls to findViewById on each row. When convertView is not null.. by ListView is null. if convertView null convertView mInflater.inflate R.layout.list_item_icon_text null Creates a ViewHolder and store references to the two children views we want to bind data to. holder new ViewHolder holder.text TextView convertView.findViewById..
Android Listview with different layout for each row http://stackoverflow.com/questions/4777272/android-listview-with-different-layout-for-each-row some optimizations in structure that you've described in comment I would suggest Storing views in object called ViewHolder . It would increase speed because you won't have to call findViewById every time in getView method. See List14 in API demos..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list String private final List String list private final Activity context LayoutInflater inflater TextView CItv COtv static ViewHolder holder View view public DemoAdapter Activity context List String list super context R.layout.test_listitems list TODO Auto.. R.layout.test_listitems list TODO Auto generated constructor stub this.context context this.list list static class ViewHolder protected TextView text CItv COtv protected CheckBox checkbox @Override public View getView final int position View convertView.. if convertView null inflater context.getLayoutInflater view inflater.inflate R.layout.test_listitems null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv TextView view.findViewById..
List Filter Custom Adapter dont give result http://stackoverflow.com/questions/8678163/list-filter-custom-adapter-dont-give-result getItem int position return position @Override public long getItemId int position return position private class ViewHolder TextView textView @Override public View getView int position View convertView ViewGroup parent ViewHolder holder null.. class ViewHolder TextView textView @Override public View getView int position View convertView ViewGroup parent ViewHolder holder null if convertView null holder new ViewHolder convertView inflater.inflate R.layout.row null holder.textView.. View getView int position View convertView ViewGroup parent ViewHolder holder null if convertView null holder new ViewHolder convertView inflater.inflate R.layout.row null holder.textView TextView convertView .findViewById R.id.textview convertView.setTag..
How did Google manage to do this? Slide ActionBar in Android application http://stackoverflow.com/questions/11234375/how-did-google-manage-to-do-this-slide-actionbar-in-android-application null LayoutInflater inflater act.getLayoutInflater rowView inflater.inflate R.layout.menu_listitem null MenuItem viewHolder new MenuItem viewHolder.label TextView rowView.findViewById R.id.menu_label viewHolder.icon ImageView rowView.findViewById.. inflater act.getLayoutInflater rowView inflater.inflate R.layout.menu_listitem null MenuItem viewHolder new MenuItem viewHolder.label TextView rowView.findViewById R.id.menu_label viewHolder.icon ImageView rowView.findViewById R.id.menu_icon rowView.setTag.. null MenuItem viewHolder new MenuItem viewHolder.label TextView rowView.findViewById R.id.menu_label viewHolder.icon ImageView rowView.findViewById R.id.menu_icon rowView.setTag viewHolder MenuItem holder MenuItem rowView.getTag String..
Picasso loading of image spawned inside AsyncTask http://stackoverflow.com/questions/18808114/picasso-loading-of-image-spawned-inside-asynctask endregion public View getView final int position View convertView ViewGroup parent ViewHolder viewHolder null if convertView null convertView mLayoutInflater.inflate R.layout.simple_message null Creates a ViewHolder and store.. null Creates a ViewHolder and store references to the children views we want to bind data to. viewHolder setupViewHolder convertView convertView.setTag viewHolder else Get the ViewHolder back to get fast access to the TextView.. references to the children views we want to bind data to. viewHolder setupViewHolder convertView convertView.setTag viewHolder else Get the ViewHolder back to get fast access to the TextView and the ImageView. viewHolder ViewHolder convertView.getTag..
Change ListView background - strange behaviour http://stackoverflow.com/questions/4583349/change-listview-background-strange-behaviour in XML v.setOnClickListener new ChannelListAdapter.OnClickListener mvh public void onClick View v ViewHolder viewHolder we toggle the enabled state and also switch the the background MyViewHolder mvh MyViewHolder viewHolder Channel ch Channel.. ViewHolder viewHolder we toggle the enabled state and also switch the the background MyViewHolder mvh MyViewHolder viewHolder Channel ch Channel mvh.data ch.setSelected ch.getSelected toggle if ch.getSelected v.setBackgroundResource R.drawable.row_blue_selected..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list null inflater context.getLayoutInflater view inflater.inflate R.layout.test_listitems null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv TextView view.findViewById R.id.COTextView.. view inflater.inflate R.layout.test_listitems null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv TextView view.findViewById R.id.COTextView viewHolder.text.. null final ViewHolder viewHolder new ViewHolder viewHolder.CItv TextView view.findViewById R.id.CITextView viewHolder.COtv TextView view.findViewById R.id.COTextView viewHolder.text TextView view.findViewById R.id.empTextView viewHolder.checkbox..
Picasso loading of image spawned inside AsyncTask http://stackoverflow.com/questions/18808114/picasso-loading-of-image-spawned-inside-asynctask have already been assigned a different contact to load up it's been recycled . You need to put some kind of tag in the viewholder and then check that it is still the same when you go to set it in postexecute. To remove the fade in you need to remove..
android listview viewholder. when to use it, and when not to http://stackoverflow.com/questions/3208897/android-listview-viewholder-when-to-use-it-and-when-not-to listview viewholder. when to use it and when not to I have a ListView with a custom list adapter. In the getView method am using the ViewHolder.. wrong rows i.e. a TextView that should be in row 10 is showing up in row 2 for example . However when I do not use the viewholder and instead call findViewById every time then the list view renders correctly. android listview listviewitem share improve..
Creating ViewHolders for ListViews with different item layouts http://stackoverflow.com/questions/3514548/creating-viewholders-for-listviews-with-different-item-layouts check the datatype and use a switch statement to handle each type differently. Each Layout type should have its own viewholder for naming clarity and ease of maintainence. Name the ViewHolders something related to each data type to keep everything..
How to implement a view holder? http://stackoverflow.com/questions/4145602/how-to-implement-a-view-holder to implement a view holder i am using a viewholder to display from a dynamic arrayadapter.it works but the data displayed changes irregularly when i scroll the List. i want..
Double checking if fragment + view holder pattern is implemented properly http://stackoverflow.com/questions/9933783/double-checking-if-fragment-view-holder-pattern-is-implemented-properly should be found and removed by the gc. This all depends on if you leak those references elsewhere of course. On viewholder in fragment pager You should not try to do something like the viewholder in the fragment. It will probably not hurt in this.. leak those references elsewhere of course. On viewholder in fragment pager You should not try to do something like the viewholder in the fragment. It will probably not hurt in this example but I can't see you gaining anything from it. Just inflate the.. correct me if anyone can see a reasonable use for it. A side note on ViewHolder I would actually refrain from using viewholder unless I really needed it even in a listview. I have seen those tags lead to really nasty memory leaks in for example some..
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