android-listview

问题 I have a custom ListView with a button , so when I click on a button it should disappear and it is disappearing but when I scroll down and come back the button is again appearing and a different button is getting disappeared. How can i make the specific button to disappear on clicking.... I am using this code holder.checkbox = (Button) view.findViewById(R.id.checkBox1); holder.checkbox.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { holder.checkbox

问题 This question addresses fundamentally the same problem as Old Version Its re-written, because the code is much more readable, and i changed the adapter from a BaseAdapter extension to a ListAdapter interface implementation (wich was pointless). I have this weird problem with position variable inside getView method of the adapter. 4 of those 6 different view types, got a button inside them. That button sends a message to a service (provoking some async stuff on the service), and within an

问题 I'm parsing vk's group wall. Some posts have photos(from 1 to 10), some don't have. And I need to display them. However, all the images are repeated. And I can't make them appear correctly. I'm using Picasso at the moment. It says it can process ListView images, however it doesn't. Other ways I foun on google don't work either. The question is how to process images correctly. Here is a piece of code that is responsible for photo. private void place_photos(View view, ArrayList<VKPhoto> photos)

问题 In my Activity A, it has one icon button and one listView . The icon button is used to intent to B and C while the listView is used to intent B to do some edit. I have 3 activities, A, B and C.The flow of activity is from A to B then C. From C, all the images and value will be returned to B then A. All the returned value and image will be loaded in listView A. Now what I trying to achieve is load all value which is get from C and B to A. Next, the list can be updated when listView is clicked.

问题 What is the use of Application info and how to use it. I'm confused how to retrieve the installed apps from the device and to display it with logo Can anyone please help me to sort it out. Differentiate the terms applicaiton info, package info and resolve info. 回答1: to display a list of installed apps, you can try this final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); final List pkgAppsList = context.getPackageManager()

问题 How to implement tabs, using activity for each tab. I found this tutorial but it implemented with Fragments. Here is a video that show exactly what I want to do. Here what I been trying to do: DefaultActivity.java @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LayoutInflater inflater = (LayoutInflater) DefaultActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = inflater.inflate(R.layout.fragment, null); mHeader = inflater

问题 I'm trying to have some text and some buttons that appears right beneath the listview (which has a custom adapter) in my activity. If the number of things in the list gets too big then it should sit on the bottom of the screen while the list view scrolls on top. Someone suggested I make a view out of it and put it as a footer but when I do it just treats the footer as a line in the listview and it scrolls with everything else. Here is my code View footer = getLayoutInflater().inflate(R.layout

问题 I have a listView inside a SherlockFragment, but I can not update the listView on screen when I make any changes to the Adapter. I tried: adapter.notifyDataSetChanged(), but without success. Thank's. 回答1: You should be updating the underlying dataset that is passed to the adapter before calling notifyDatasetChanged(); EG: For ArrayAdapter in a ListActivity ("arraylist" is the ArrayList you've used to back your ArrayAdapter) arraylist.add(data); arrayadapter = this.getListAdapter();

问题 I have a custom list adapter and get data to fill it via a Asynctask that gets data from a webserver. This all seems to work fine however when I call notifyDataSetChanged() the listview does display the information below is my code: public class my_Activity extends Activity { ... ListView accounts; static MyListAdapter m_adapter; private ArrayList<Account> accountslist; LoadAllAccounts l = new LoadAllAccounts(); private ProgressDialog pDialog; int userID; JSONParser jParser = new JSONParser()

问题 This question already has answers here : How do I parse JSON in Android? [duplicate] (3 answers) Closed 6 years ago . I am new in the field of android development. How to parse just this object. { "user_id":21, "firstname":"", "lastname":"", "email":"9654008793", "isd_code":"91", "mobile":"9654008793", "gender":"", "dob":"0000-00-00", "image":null, "status":"0", "verification_key":"4518" } 回答1: JSONObject obj = new JSONObject(yourString); int userId = obj.getInt("user_id"); String firstname =