In my application I want use this library for ImagePicker : https://github.com/SimformSolutionsPvtLtd/SSImagePicker
But after add this line private val imagePicker: ImagePicker = registerImagePicker(this) show me Force close.
I want use this into Fragment and this fragment info ViewPager2 .
FragmentAdapter code :
class FragmentsAdapter (fragmentManager: FragmentManager, lifecycle: Lifecycle) :
FragmentStateAdapter(fragmentManager, lifecycle) {
override fun getItemCount(): Int {
return 2
}
override fun createFragment(position: Int): Fragment {
when (position) {
0 -> return FragmentA()
}
return FragmentB()
}
}
FragmentB codes :
class FragmentB : Fragment(), ImagePickerResultListener {
private val imagePicker: ImagePicker = registerImagePicker(this)
...
private fun openImagePicker() {
imagePicker
.title("Images")
.multipleSelection(false)
.showCountInToolBar(true)
.showFolder(true)
.cameraIcon(true)
.doneIcon(true)
.allowCropping(true)
.compressImage(true)
.maxImageSize(2.5f)
.extension(PickExtension.ALL)
imagePicker.open(PickerType.GALLERY)
}
}
Error message :
java.lang.IllegalStateException: Fragment MandatoryInfoFragment{ccb6b52} (d0165abf-9555-41a8-a139-d84da8774350) not attached to an activity.
at androidx.fragment.app.Fragment.requireActivity(Fragment.java:995)
at com.app.imagepickerlibrary.ImagePicker$Companion.registerImagePicker(ImagePicker.kt:232)
at com.myapp.ui.login.pages.complete.mandatory.MandatoryInfoFragment.<init>(FragmentB.kt:51)
at com.myapp.ui.login.pages.complete.FragmentsAdapter.createFragment(FragmentsAdapter.kt:22)
How can I fix it?
>Solution :
The reason is registerImagePicker is calling requireActivity() to get the Context . And at the time of initialization requireActivity() will return null because the Fragment is not attached yet to Activity. See the code below.
fun Fragment.registerImagePicker(callback: ImagePickerResultListener): ImagePicker {
return ImagePicker(callback, requireActivity())
}
To fix this you can move the initialization down in lifecycle Tree of Fragment after the fragment is attached for example inside onViewCreated() . Check fragment lifecycle.
class FragmentB : Fragment(), ImagePickerResultListener {
private lateinit var imagePicker: ImagePicker
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
imagePicker = registerImagePicker(this)
}
}