android-viewpager2

问题 I'm using ViewPager2 in my app to show some images it worked well when I used images from drawable but when i try to load images from links it shows error. I'm new to this so please help me how to load them from url. It throws error at the adapter class as items.size(); refers to null. Item Class public class ImageSlider1_Item { private String imageURL; public ImageSlider1_Item(String imageURL){ this.imageURL = imageURL; } public String getImageURL (){ return imageURL; } } Adapter Class

问题 I'm using ViewPager2 in my app to show some images it worked well when I used images from drawable but when i try to load images from links it shows error. I'm new to this so please help me how to load them from url. It throws error at the adapter class as items.size(); refers to null. Item Class public class ImageSlider1_Item { private String imageURL; public ImageSlider1_Item(String imageURL){ this.imageURL = imageURL; } public String getImageURL (){ return imageURL; } } Adapter Class

问题 i am using Advance Navigation Component with BottomNavigationView, In One tab i have viewPager2 first clicked on tab is working fine but second time come on that tab application keep crashing. Below is crashlog if anyone can help thanks. java.lang.IllegalArgumentException at androidx.core.util.Preconditions.checkArgument(Preconditions.java:36) at androidx.viewpager2.adapter.FragmentStateAdapter.onAttachedToRecyclerView(FragmentStateAdapter.java:140) at androidx.recyclerview.widget

问题 i am using Advance Navigation Component with BottomNavigationView, In One tab i have viewPager2 first clicked on tab is working fine but second time come on that tab application keep crashing. Below is crashlog if anyone can help thanks. java.lang.IllegalArgumentException at androidx.core.util.Preconditions.checkArgument(Preconditions.java:36) at androidx.viewpager2.adapter.FragmentStateAdapter.onAttachedToRecyclerView(FragmentStateAdapter.java:140) at androidx.recyclerview.widget

问题 i am using Advance Navigation Component with BottomNavigationView, In One tab i have viewPager2 first clicked on tab is working fine but second time come on that tab application keep crashing. Below is crashlog if anyone can help thanks. java.lang.IllegalArgumentException at androidx.core.util.Preconditions.checkArgument(Preconditions.java:36) at androidx.viewpager2.adapter.FragmentStateAdapter.onAttachedToRecyclerView(FragmentStateAdapter.java:140) at androidx.recyclerview.widget

问题 I am currently stuck on an error that continues to slow down the performance of my application. The error does not cause the application to close or crash, or to write an exception to the console. The console simply reports this message: E/iardini.error0: Invalid ID 0x00000001. The only things that emerge from the message are: It's an error, you understand from the prefix "E/" The error is within my app, "iardini.error0" Didn't recognize some kind of id How replicate the error: I've made a

问题 I use new android widget ViewPager2 version 1.0.0-alpha03 and when I set click listener on it method onClick() not called. My Actvity class: class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) supportFragmentManager.beginTransaction() .add(R.id.fragmentContent, SecondFragment.newInstance(), SecondFragment.TAG) .addToBackStack(SecondFragment.TAG) .commit() } } My Fragment:

问题 I use new android widget ViewPager2 version 1.0.0-alpha03 and when I set click listener on it method onClick() not called. My Actvity class: class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) supportFragmentManager.beginTransaction() .add(R.id.fragmentContent, SecondFragment.newInstance(), SecondFragment.TAG) .addToBackStack(SecondFragment.TAG) .commit() } } My Fragment:

问题 I am trying to link my Navigation Drawer with SwipeView Tabs, the problem is that the logcat tells me that my Viewpager must not be null, I have tried to solve this problem in many ways but could not. PageAdaper.kt class ViewPagerAdapter(fragmanetActivity: TabFragment): FragmentStateAdapter(fragmanetActivity) { override fun getItemCount(): Int = 3 override fun createFragment(position: Int): Fragment { when (position) { 0 -> return FirstFragment() 1 -> return SecondFragment() 2 -> return

问题 I am trying to link my Navigation Drawer with SwipeView Tabs, the problem is that the logcat tells me that my Viewpager must not be null, I have tried to solve this problem in many ways but could not. PageAdaper.kt class ViewPagerAdapter(fragmanetActivity: TabFragment): FragmentStateAdapter(fragmanetActivity) { override fun getItemCount(): Int = 3 override fun createFragment(position: Int): Fragment { when (position) { 0 -> return FirstFragment() 1 -> return SecondFragment() 2 -> return