baseAdapter | universal Adapter for ListView RecyclerView GridView | RecyclerView library
kandi X-RAY | baseAdapter Summary
kandi X-RAY | baseAdapter Summary
Android's universal Adapter for ListView, RecyclerView, GridView, etc. supports multiple Item types.
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Top functions reviewed by kandi - BETA
- Initializes the RecyclerView
- Get view by id
- Init the header and the footer
- This is called when the viewHolder is created
- Returns a delegate for a specific item at a particular position
- Set the OnItemClickListener on the view
- Attaches the given position to the inner view
- Attaches the given inner view to the RecyclerView
- Set the alpha value for a view
- Get a ViewHolder for the layout
- Helper method to set the layout on an item
- Gets a view at a specific position
- On createViewHolder
- Initializes the list view
- On create view holder
- Called when the view holder is created
- Sets the progress of the given view
- Set the rating for a view
- Set the typeface for all views
- Removes a delegate
- Attaches the span size to a RecyclerView
- Create the content view
- Attaches the span to a RecyclerView
baseAdapter Key Features
baseAdapter Examples and Code Snippets
Community Discussions
Trending Discussions on baseAdapter
QUESTION
I want to add EditText to the listview, but I can't do it smoothly. Please guide. If it is List, it is normal, but DakaHinbanClass is used, How to write code that uses Class
The data is obtained from MySQL, and the content can be displayed normally at present. I want to change the production quantity directly in the listview, but when running, the position of line 195 always reports an error.
ErrorCode:
2022-03-31 15:58:14.780 13403-13403/com.ree.kms E/AndroidRuntime: FATAL EXCEPTION: main Process: com.ree.kms, PID: 13403 java.lang.ClassCastException: android.text.SpannableStringBuilder cannot be cast to com.ree.kms.DakaHinbanClass at
com.ree.kms.DakaListAdapterClass$MyTextWatcher.afterTextChanged(DakaListAdapterClass.java:195)
at android.widget.TextView.sendAfterTextChanged(TextView.java:8336) at android.widget.TextView.setText(TextView.java:4399) at android.widget.TextView.setText(TextView.java:4247) at android.widget.EditText.setText(EditText.java:90) at android.widget.TextView.setText(TextView.java:4222) at com.ree.kms.DakaListAdapterClass.getView(DakaListAdapterClass.java:101) at android.widget.AbsListView.obtainView(AbsListView.java:2474) at android.widget.ListView.makeAndAddView(ListView.java:1920) at android.widget.ListView.fillDown(ListView.java:717) at android.widget.ListView.fillFromTop(ListView.java:778) at android.widget.ListView.layoutChildren(ListView.java:1701) at android.widget.AbsListView.onLayout(AbsListView.java:2235) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1189) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396) at android.widget.FrameLayout.onLayout(FrameLayout.java:333) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844) at android.widget.LinearLayout.onLayout(LinearLayout.java:1753) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396) at android.widget.FrameLayout.onLayout(FrameLayout.java:333) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844) at android.widget.LinearLayout.onLayout(LinearLayout.java:1753) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396) at android.widget.FrameLayout.onLayout(FrameLayout.java:333) at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2740) at android.view.View.layout(View.java:16953) at android.view.ViewGroup.layout(ViewGroup.java:5579) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2562) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2265) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1323) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6718) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:894) at android.view.Choreographer.doCallbacks(Choreographer.java:696) at android.view.Choreographer.doFrame(Choreographer.java:631) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:880) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5765) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
DakaListAdapterClass
...ANSWER
Answered 2022-Apr-01 at 05:56After the user changes the string inside the EditText
, the method afterTextChanged(Editable s)
is called, and s
represents the new edited String. You want to update the DakaHinbanClass object inside the list, so you can't just conver a String an object (this String is only one class member of this object class, right?)
If you want to update the Query value inside this object, first get the object and then set the class member value to the new String, like this:
QUESTION
I'm new to Android Studio and I'm trying to implement a listview in a fragment with an adapter. After launching my application I have this error message
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
It seems to be something with my adapter. Here's my code:
MainActivity.java
...ANSWER
Answered 2022-Mar-14 at 05:25No, there is nothing wrong with your adapter, but it is wrong with your listview.
HomeFragment.java
QUESTION
Click on TextView open DialogFragment. Custom Listview set in DialogFragment. Listview item set in textview. Data set in Listview but when click listview item is not any response but when we click on listview item text then give error "java.lang.ClassCastException: java.lang.Integer cannot be cast model.Serve"
MainActivity.kt
...ANSWER
Answered 2022-Mar-07 at 08:17Try to change the getItem
function in the DialogListAdapter
to:
QUESTION
The structure:
(1) Activity's FrameLayout -> (2) Fragment's ListView -> (3) Base Adapter
There are buttons such as like and reply in every row in the layout.
Whenever user hits the like button, I will have to change a TextView's text in the (1) Activity.
I couldn't find a solid answer thru searching.
So
I want communication between Adapter and Fragment.
Button click in BaseAdapter -> update UI in Activity(which contains fragment)
...ANSWER
Answered 2022-Mar-01 at 15:45Create an interface like:
QUESTION
I have a simple AdapterViewFlipper with an onClickListener attached to its items.
When i click it should flip through all of the numbers in data
array, "one" through to "seven".
It is only flipping on first two clicks up to "three". After that my adapterViewFlipper
stops clicking and no flips occur. What am i doing wrong?
ANSWER
Answered 2022-Feb-27 at 01:56When you first create the activity, you're searching for R.id.textView
inside your AdapterViewFlipper
, and setting the click listener on that. But that TextView
is created when getView
in your adapter inflates the flipper_view
layout.
When you flip to another view, getView
inflates another copy of the layout, and that instance of textView
doesn't have the click listener set on it, because it's a new view. I don't know why clicking would work more than once, but that's what I'd look into.
Try setting the click listener in getView
instead - you'll need to make adapterViewFlipper
visible to it (or call a showNext
function in the activity that flips it, something like that)
QUESTION
I am having a gridview which is populated from a list of string. List of string is a simple array of alphabets. Here is my Activity Xml
...ANSWER
Answered 2022-Feb-02 at 11:33It was not possible using GridView. I had to use the RecyclerView with GridLayoutManager.
QUESTION
I'm trying to check multiple items in RecyclerView
and delete them but unable to delete after checking CheckBox
in custom RecyclerViewAdapter
.
ANSWER
Answered 2021-Nov-11 at 19:33Your selectedList
is null. You should use val selectedList = mutableListOf()
.
Also, you probably want to be removing items from the list when they are unchecked.
In my opinion, however, you should change your strategy. This selectedList
is going to be tricky to keep synced with your UI state, especially after a screen rotation. Instead, you can simply iterate your Adapter's source list and remove the items that are isSelected
. Then notify the Adapter of the change.
I guess that list is in your base adapter class that you haven't shown. This will be kind of complicated using repeated notifyRangeRemoved
calls, or you can use notifyDataSetChanged()
and suffer the ugly refresh of your list. It would be easier if you were using ListAdapter as your base class.
Edit, based on updated question:
Quick and dirty solution: remove selectedItems
from your adapter and all the code interacting with it. Add a function like this to TestAdapter and use it in your Fragment:
QUESTION
I can't create Huawei Push token.
TokenTask failed, ErrorCode: 907122012
- whenpush_kit_auto_init_enabled=true
in manifest
...String: com.huawei.hms.common.ApiException: 907122037: get token error
- when i trying to get token manually in
ANSWER
Answered 2021-Sep-08 at 10:02My problem is solved! I change my build.gradle (app:)
for signing debug version with release keystore, clear app data and cache in HMS Core app. Manual: https://developer.huawei.com/consumer/en/doc/development/HMSCore-Guides/android-integrating-sdk-0000001050040084
QUESTION
When I try to fill a ListView using a custom adapter, I get an empty list, I can't figure out what the error is? Why is everything loaded and displayed when using the default adapter?
...HeroesAdapter.kt
ANSWER
Answered 2021-Aug-04 at 17:31Looks like you add data to the backing list of the adapter (listHero.add(data)
), but you never inform the adapter that its backing data has changed (heroesAdapt.notifyDataSetChanged()
).
As an aside, there are some issues with your coroutine. You should not use GlobalScope. Use lifecycleScope
instead to avoid leaking network calls and copies of your Activity. Really, you should fetch data in a ViewModel using the ViewModel's scope and expose it via LiveData or SharedFlow so the network call doesn't have to restart if the phone rotates.
QUESTION
ANSWER
Answered 2021-Jun-26 at 01:32ListView
reuse views returned by Listview1Adapter.getView()
method. You get a situation when view for some item change itself - the state of View instance(object) was changed (expanded). Then ListView pass as an argument of Listview1Adapter.getView()
method a same View's instance for other item - this view already expanded.
You should save state of view for each item of ListView (in your case for data
ArrayList) and restore it for each item in getView()
method. It might look like:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install baseAdapter
You can use baseAdapter like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the baseAdapter component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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