android-listview

问题 11-06 19:52:25.958: E/AndroidRuntime(29609): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(-1, class android.widget.ListPopupWindow$DropDownListView) with Adapter(class com.example.parkfoxxlight_android.PlacesAutoCompleteAdapter)] Full log: http://pastebin.com/Hx7k28Rm Full code of adapter: http:/

问题 I've been scouring throug the examples and tutorials but I can't seem to get my head around how to handle recycling within a subclassed SimpleCursorAdapter. I know that for regular ArrayAdapters you can check convertView for null and inflate if null from the xml and if not null, recycle, but I'm having a little trouble visualizing how that works with the from and to arrays within the SimpleCursorAdapter subclass. I tried to figure this out from the The Busy Coders Guide to Android Development

问题 i have a listview with 100 items and i want to display first 10 items and on click of next button i have to display next 10 ie.,from 11 to 20, i have the code for getting first 10 items public int getCount() { return 10; } but how to get next 10 items alone and so on. any idea 回答1: One way to do this is, 1) Don't populate your ArrayList with all the data. Instead keep them in a separate ArrayList ( al1 ) and use an ArrayList ( al2 ) with max 10 values to use with your BaseAdapter. 2)

问题 When I set the onScrollListener for my ListView , it calls onScroll . This causes a crash because certain things haven't been initialized. Is this normal? Note: this is happening without me even touching the phone. public class MainActivity1 extends Activity implements OnClickListener, OnScrollListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.layout1); ListView lv = (ListView)findViewById(R.id.listview1); lv

问题 I want to style the lisview in my application as seen is this image I have tried to develop it by applying gradient : code for list_item_normal is : <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" > <gradient android:centerColor="#E6E6E6" android:endColor="#CCCCCC" android:startColor="#FFFFFF" android:angle="270"/> <!-- <gradient android:startColor="#FF7500" android:centerColor="#FFCC00" android:endColor="

问题 I have a complex xml file and I really need a ScrollView. Please Don't mind the Ids as I have changed them. The ScrollView here doesn't work. <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:fillViewport="true"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/f_summary_LL"> <LinearLayout android:orientation=

问题 Calling a Fragment from an Activity , I am displaying a ListView with two Buttons . When I click on a menu_item (i.e. Show Online), i am updating the data and so the ListView . Now I need to reflect the updated data. How can i refresh the Fragment after i click Show Online. Till now, I have used the following code: Intent intent = getIntent(); Intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); finish(); startActivity(intent); But this will restart the whole Activity . I just need to refresh

问题 I have a ListView where each row has two webviews side by side, taking up the entire row. I've set up onListItemClick() in my ListActivity, but they are not fired when I tap on one of the rows (unless the place I happen to tap is outside the webview's border - but this isn't likely behavior, users would most likely want to tap on the image inside the webview). I've tried setting setFocusable(false) and setFocusableInTouchMode(false), but those don't help. Ideally this would operate exactly

问题 How do I do this per selected list item. I tried adding this to android:background <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_focused="true" android:state_pressed="false" android:drawable="@color/android_green" /> <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/black_alpha" /> <item android:state_focused="false" android:state_pressed="true" android:drawable="@color/black_alpha" /> <item android:drawable="

问题 I am attempting to animate the ListView items when a scroll takes place. More specifically, I am trying to emulate the scroll animations from the iMessage app on iOS 7. I found a similar example online: To clarify, I'm trying to achieve the "fluid" movement effect on the items when the user scrolls, not the animation when a new item is added. I've attempted to modify the Views in my BaseAdapter and I've looked into the AbsListView source to see if I could somehow attach an