android-listview

问题 I have impelmented SyncAdapter that calls webservice and insert/update database. I would like to show some of this data in ListView so i implemented ListFragment in witch the data is displayed via CursorAdapter . And everything works ok, except when I get new data from web and insert it into database, the CursorAdapter is not updated and new data is not shown in ListView In my ContentProvider , after every insert I call context.getContentResolver().notifyChange(uri, null); This is

问题 I have a Arraylist that contain a hashmap . hashmap contain a Topic name, Name and value. For example hashmap object like this.(I did not add the key for the example.) {"Topic A", "Name 1" , "100"} {"Topic A", "Name 2" , "100"} {"Topic A", "Name 3" , "100"} {"Topic A", "Name 4" , "100"} {"Topic B", "Name 1" , "100"} {"Topic B", "Name 2" , "100"} {"Topic B", "Name 3" , "100"} {"Topic B", "Name 4" , "100"} {"Topic C", "Name 1" , "100"} {"Topic C", "Name 2" , "100"} {"Topic C", "Name 3" , "100"}

问题 I am trying to apply search on ndroid ListView but its not working for me, here is the code i have tried. final ArrayList<Users> uData = new ArrayList<Users>(); listView = (ListView) findViewById(R.id.listView1); listView.setAdapter(new CustomListAdapter(this, uData)); searchBox.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { // When user changed the Text ((Filterable) ViewInfo.this.listView.getAdapter())

问题 I can not find a way to avoid repeating a subtraction operation every time you restart the application, in practice, I have this code: public void onCreate(Bundle savedInstanceState) { SharedPreferences prefs = getSharedPreferences(MY_PREFERENCES, Context.MODE_PRIVATE); int giornispett = Integer.parseInt(prefs.getString(GIORNISPETT, "24")); super.onCreate(savedInstanceState); setContentView(R.layout.stats); Intent intent=getIntent(); String trn=getPackageName(); int Giorni=intent.getIntExtra

问题 Am new to android development my requirement is need to pass value from spinners from one fragment to another and to populate that value in listview in tofragment: This is my fromfragment: final String god=sbu.getSelectedItem().toString(); btnupdate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Add yog=new Add(); Bundle args=new Bundle(); args.putString("yog",god); yog.setArguments(args); getFragmentManager().beginTransaction().add(R.id.content

问题 I've got the basic premise of how to get data from a sqlite db, and i've got it to log an item returned to the logcat. However, I can't seem to work out the best way to output that data in to a listview. At first I thought i'd put the data in to an array, and setup a listview using that array, however from looking around you can link the Cursor directly as a datasource to a listview but I can't quite get my head around it. Here is my MainActivity (once i've worked it out a bit more, i'd put

问题 I have tried all possible options for android:background and android:cacheColorHint with @android:color/transparent and @null but of no use to hide the listView in the picture. I am trying to merge the gray background(pink question marks) with the white theme of my app. My theme is the regular @android:style/Theme.Light.NoTitleBar My layout code is <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill

问题 An answer to another question raised a different question for me. When displaying a ListView you update the Data Set then call the adapter's notifyDataSetChanged() . This calls requestLayout() and the Google documentation says " This will schedule a layout pass of the view tree " So apparently we don't really know when that will take place. But during the layout pass many of the custom overrides in the adapter such as getView() and getCount() will be accessing the data set. So if the layout

问题 My project contains listView(homelistView) that contains button(btnList) . When I click on button(btnList) it must go to another Activity. I tried a lot but I didn't find a good example. Please suggest me a good example regarding this. Below is my code: Here is my listview contains button. When on click of button it must go to other activity --------------------------------A-- button(btnList) B --------------------------------C--- BUTTON(btnList) D --------------------------------E--

问题 Main activity layout (removed the irrelevant elements): <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/black" <RelativeLayout android:id="@+id/layout_relative_in_drawer" android:layout_width="match_parent" android:layout_height="match_parent" android