android-adapter

问题 i'm try to write simple filtering ListView by this below code. but that does not work correctly in this code i'm using ContactListStructure class structure as: public class ContactListStructure implements Serializable { public Long id; public String name; public String mobile; public Bitmap photo; public Boolean checked; ... } and i'm fill this class as an ArrayList with phone contacts. after fill that i'm set this list into ListView without any problem,then i'm try to fillter this list by: /

问题 I feel a bit stupid as i can't find the answer to this question, which makes me think i'm actually asking the wrong question. However, here goes... I have a list view, and a listviewitem defined in xml, with a couple of fields, nothing special. All set to visible. Then I bind to my ListView using a custom ArrayAdapter, and want to hide one of my text views, on row 5. However, it seems to be hiding my TextView on item 0 and item 5. Which is a bit odd? I've simplified the code, to reproduce the

问题 I'm trying to create a recycler view with this type of layout. The items are strings and can apear with diferent sizes, i dont know how much items there will be in each row. Can I do this with a StaggeredGridLayoutManager? The image is just a fake example, there can be more items in each row 回答1: You might wanna check out the open-source FlexboxLayout, developed by Google, especially FlexboxLayoutManager which is a layout manager for a RecyclerView . To create the layout manager with the

问题 I got the following exception when trying to change the background of pages inside a ViewPager in the onPageScrolled method. I have edited the question in order to make it more clear. android.content.res.Resources$NotFoundException: Resource ID #0x0 at android.content.res.Resources.getValue(Resources.java:1245) at android.content.res.Resources.getColor(Resources.java:899) at android.support.v4.content.ContextCompat.getColor(ContextCompat.java:413) at com.noel.material_onboarding

问题 Context I want to have a list with 3 significantly different layouts for list items so I make my adapter that based on type of item to display creates appropriate view. e.g. i want to list some images, texts and numbers, each with some title. I know that in public View getView(int position, View convertView, ViewGroup parent) the convertView stands for reusing no longer visible listItems views. Question How can I choose the convertView or how can i control what i get in there? The problem

问题 I am trying to create a list item which consists of two list item on above the other. The code I am using is this: package com.example.list2; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.widget.ListView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ListView lv1=(ListView)findViewById(R.id.listView1); Level

问题 I have AutoCompleteTextView which uses to search the value from database. On Click of filtered value it's set to the AutoCompleteTextView which can be use to update the value for the particular data. I would like to incorporate delete ImageView functionallity next to filtered item. On Click of it Alert Dialog whether to delete or not. Been able to develop the scenario. MyCursorAdapter adapter = new MyCursorAdapter(this, R.layout.edt_delete_item, null, fromName, to); searchText.setAdapter

问题 In my android application, I am switching between the two set of images-(Set1, Set2) displayed in a GridView-A inside a Fragment-A.I am doing this on a button press using a boolean variable. Clicking on any GridView icon leads to another Fragment-B. The problem is when I press back button on Fragment-B , the Fragment-A is always loaded with the images of Set1 by default. I want the same set of images (Set1 or Set2 ) to be loaded on FramentA that were displayed before going to FragmentB.

问题 I have a problem with showing first item selected at spinner dropdown menu. When spinner is first time initialized, row is filled with "nothing selected view" and when something is selected from the dropdown menu, spinner view is changed with selected value from dropdown. That works in every case except in the case when I select first item right after the initialization. What I'm trying to say is that value of spinner row writes value of selected item in dropdown in every case except 0 item.

问题 I'm making a music player application where I'm using a loader to load song data to the adapter which is to be shown using a RecyclerView. However, I'm getting this weird error of my adapter methods not working. Only the constructor method of adapter is getting called. I'm also getting "No adapter attached; skipping layout" despite going through all the available solutions here in stack overflow. Few points to be noted: I've tried all the solutions for "No adapter attached; skipping layout"