android-listview

问题 I have created navigation drawer and displaying items in list. My list is static but i am displaying points. So when users select the items in the list and do some activity he get the points. So i want to update the points as soon as he gets. How can i do this./ Below is my code: Activity Class: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home_page); // Initializing dataList = new ArrayList<DrawerItem>(); mTitle =

问题 I have created navigation drawer and displaying items in list. My list is static but i am displaying points. So when users select the items in the list and do some activity he get the points. So i want to update the points as soon as he gets. How can i do this./ Below is my code: Activity Class: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home_page); // Initializing dataList = new ArrayList<DrawerItem>(); mTitle =

问题 i have a custom list view, which displays users, and there photos i retrieve the data from API, Which gives JSON Output, My Issue is that the list view is not scrolling smoothly, it hangs for a sec and scrolls, it repeats the same till we reach the end. i thought it might me because i am running network related operation on the UI thread, but it continues to do that even after it completes loading? the structure of my custom Listview is <TextView style="@style/photo_post_text" android:id="@

问题 I need to highlight a row in a ListView that was selected (to show the user what he chose), so, it's not the one that is going to be chosen, it's the one he chose before. I already have the location by: ListView.setSelection(position); And now what I want is to select this specific row and to highlight it. The code of the onCreate() in the activity that contains the ListView : public class CountryView extends Activity { protected static final String LOG_TAG = null; /** Called when the

问题 I am trying to implement an endless scroll listview but when I call notifyDataSetChanged() the whole list refreshes then the scroll position goes back to the top. Is this the normal behavior? how can I make it simply add the items added without refreshing and keep the scroll position? 回答1: Such behaviour is not normal. Without seeing your code I can suggest following: 1) You are not calling notifyDataSetChanged() from the UI thread. The correct way: runOnUiThread(new Runnable() { public void

问题 I want to cancel shortClick when LongClicked an item, I'm using ripple effect material-ripple library in list view but when i long press list item it also call onClick-event list.setOnItemClickListner not work with MaterialRippleLayout on row item i have also return true in OnLongClicked but does not work.. also tried and added method in MaterialRippleLayout.java @Override public void setOnLongClickListener(OnLongClickListener l) { super.setOnLongClickListener(l); childView

问题 hi I want to use a listview (probably) is it possible to fill each entry with say two buttons two text areas, and have them laid out with realtive or linear layouts? I have used a scroll view with layout inflator to achieve this at the moment, but I'm thinking listview would be better maybe? 回答1: yes you can. you need to use a custom list view for that. making an activity by adding a listview in it and then referencing another xml to that listview using an AAdapter so that every element of

问题 I have an EditText inside the ListView of 20 rows. I want the text of all the Edittext text on clicking of the button. The App gets crash giving the NullPointerException Error on clicking of the button.This gives value for first 11 rows.. after this it gets crashed as I think this is scrolled down view . complete adapter code @SuppressLint("NewApi") public class CustomAdapter extends BaseAdapter implements OnClickListener { /*********** Declare Used Variables *********/ private Activity

问题 I have a main activity and a ListFragment containing a custom ArrayAdapter that is a tab of that main activity. The main activity has an AsyncTask that pulls down an xml file then calls another class to parse it when the app starts. The ListFragment data comes from the parsed data that the AsyncTask. I want to be able to call the custom adapter of the ListFragment so that I can notifyDataSetChanged in the onPostExecute method of the AsyncTask. How can I accomplish this? Right now, when I open

问题 I have a Department list that contains the department names, for example, Mens, Ladies, etc. Now if suppose, I click on 'Ladies', the next screen should be displayed with the categories list that are correlated to the Department Ladies . With my present code, only the first item on the category list is displayed. This is my code for my Department Adapter: public class Department_Adapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { public static Context context; private ArrayList