android-adapter

问题 I have implement search for my application. For that I have used an adapter as well. I have loaded 30 items to the search screen. When I pressed letter z to search, then letter z belongs to 4 items out of 30 items in the list. According to the below shown code it identifies the number 4 and shows the first 4 items out of the 30 items. When I debug inside getFilter() , it shows the filtered items correctly(I have provided a screen shot). My problem is how can I load the filtered items. Bit

问题 Assume we have an Activity with n TextView s that represent one line notes. These notes are stored somewhere (local database, network etc), and each time onResume() being called, the proper number of TextView s are drawn according to that stored data. Now, lets say the user want to delete a note, what would be the best way the resolve the specific TextView , back to its storage entity? At the moment, the only way I know is by using View.Tag , and having some manager to translate it to data

问题 I have a StaggeredGrid in a RecyclerView and I am trying to dynamically set the image height in the onBindViewHolder . I thought the StaggeredGrid was supposed to handle all this automatically, so I set android:layout_width="match_parent and android:scaleType="fitStart on the ImageView , but there is lots of gaps around the image. Since the StaggeredGrid isn't living up to it, I'm trying to help it a bit by defining the image height dynamically in the onBindViewHolder . I have the width and

问题 This question already has answers here : Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did not receive a notification” (25 answers) Closed 3 years ago . I found a lot of questions on the same topic. But I am unable to figure out what I am doing wrong here. Exception: "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

问题 What I'm trying to achieve is this: As you can see, there is a background image that appears slightly behind the first card in the RecyclerView. When the user scrolls, the background image, as well as the "Discover" text and icon, should also scroll off the screen. I've looked into putting the RecyclerView into a NestedScrollView , but from what I've read, this breaks the RecyclerView and doesn't allow it to recycle views (I could be wrong). How would I achieve something like this? Right now,

问题 I am making a checklist type app in Android, in which I am populating items in a list view with a check box next to them. when a user clicks on an item I want it to strike out the text and update the entry in the database for the relevant column. For this reason I am storing Name-Value pairs in a TreeMap. Where Name corresponds to the Database Column Name and Value to the value in that Column name. I have achieved this using the following: if ((c.getString(c.getColumnIndexOrThrow("Field130"))

问题 With the help of sqlite database I am added the Cricket player name and finally it display the names in listview. I am added the Update and delete button in CustomCursorAdapter.java.Below I am posted the Adapter code for that: CustomCursorAdapter.java: import android.content.Context; import android.database.Cursor; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.CursorAdapter; import android

问题 With the help of sqlite database I am added the Cricket player name and finally it display the names in listview. I am added the Update and delete button in CustomCursorAdapter.java.Below I am posted the Adapter code for that: CustomCursorAdapter.java: import android.content.Context; import android.database.Cursor; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.CursorAdapter; import android

问题 Hi how to update listView when back pressed in another activity. I am using database, where i am deleting particular row in one Activity , if back pressed alone, it's not updating. When i switch over to some other activity or app closed and open it's working fine where listView gets updated. Here is code.. public class FragmentLiveChats extends Fragment { private AdapterLiveChat adapterChatHistory; private List<LiveChatDetails> customerDetail; private ListView mListView; private List

问题 I'm looking into writing a custom adapter to populate a listview with 3 textviews per line. I've found quite a bit of example code to do this, but the one that seemed the best was at: http://www.anddev.org/custom_widget_adapters-t1796.html After a few minor tweaks to fix some compiler issues with the latest Android SDK, I got it running, only to get the exception: ERROR/AndroidRuntime(281): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView So