android-recyclerview

问题 Here i am implementing , user pick items add in adapter adapter current position directly upload to firebase without any click listener For this code is, In Activity. @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK && data != null) { switch (requestCode) { case PICK_IMAGE: ImageUri = data.getData(); Log.i("wneuiewnewu",ImageUri.getPath()); UriListFromGallery

问题 Here i am implementing , user pick items add in adapter adapter current position directly upload to firebase without any click listener For this code is, In Activity. @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK && data != null) { switch (requestCode) { case PICK_IMAGE: ImageUri = data.getData(); Log.i("wneuiewnewu",ImageUri.getPath()); UriListFromGallery

问题 I'm trying to get Company id (&& Company name) in first activity, pass it into the second activity and there I'd like to retrieve all data from database based on that id (&& name), but the app crashes, below is the code. can someone provide me a working code snippet. Any kind of help will be appreciated. AdapterCompany public class AdapterCompany extends RecyclerView.Adapter<AdapterCompany.AdapterCompanyHolder> { private List<EntityCompany> entityCompanies = new ArrayList<>(); private

问题 I am very glad that Google released ViewPager2 which is built on RecyclerView to solve a lot of issues that the old ViewPager has. I quickly replaced my old ViewPager codes to ViewPager2: Replace ViewPager with ViewPager2 in xml Replace FragmentPagerAdapter(FragmentManager) with FragmentStateAdapter(Fragment) ViewPager setup is as below: viewPager.adapter = fragmentAdapter val mediator = TabLayoutMediator(tabLayout, viewPager, true) { tab, position -> tab.text = fragmentAdapter.tabNames

问题 I do not know if this approach is the best, but I have the following problem: I want a list item (a CardView) in a RecyclerView to be animated when it's button was clicked, so that this button, some other views inside this item and the background of the CardView changes. I am catching the animateChange from a custom RecyclerView.ItemAnimator: (until now the animation is just a fade defined in the xml via animateLayoutChanges) public boolean animateChange(@NonNull RecyclerView.ViewHolder

问题 I am actually developing an Android application on which I should display dynamic forms based on metadata contained inside JSON documents. Basically the way it works (without the details) is that a JSON document represent the structure of a form: { "fields": [ { "name": "fieldA", "type": "STRING", "minCharacters": 10, "maxCharacters": 100 }, { "name": "fieldB", "type": "INTEGER", "min": 10, "max": 100 }, { "name": "fieldC", "type": "BOOLEAN_CHECKBOX", "defaultValue": true } ... ], "name":

问题 I am actually developing an Android application on which I should display dynamic forms based on metadata contained inside JSON documents. Basically the way it works (without the details) is that a JSON document represent the structure of a form: { "fields": [ { "name": "fieldA", "type": "STRING", "minCharacters": 10, "maxCharacters": 100 }, { "name": "fieldB", "type": "INTEGER", "min": 10, "max": 100 }, { "name": "fieldC", "type": "BOOLEAN_CHECKBOX", "defaultValue": true } ... ], "name":

问题 I want to print all dates(childs) details from 5th of july to 7th of july from my database but i only get top date(child)[7th july] as my output instead of all of the child nodes** Here is my reference where i get values from database and put into RecyclerView adapter DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Dateinfo").child(firebaseUser.getUid()); reference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(@NonNull

问题 I have populated recyclerview from sqlite .when clicking each row ,row will delete from sqlite but recyclerview not showing updated list after delete. Recycler view show updated list only after launching activity once again. My question is how to update the recycler view soon after deleting an item from the recylcerview without refresh. following are my code SecondActivity.java import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget

问题 I am using Recyclerview on a fragment when i run the app and open the activity it crashes.I am new to android so i am not able to implement Recyclerview with SQlite as i followed some code on internet and implemented in my code but my app crashes log 02-25 11:53:20.362 19942-19942/com.navinkadlak.typroject E/AndroidRuntime: FATAL EXCEPTION: main Process: com.navinkadlak.typroject, PID: 19942 java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.v7