I am trying to display the contents of a word document in a Textview in a fragment, but the .docx documents show a blue question mark on the assets folder. And the app crashes when I launch it. Below is my code:
class HomeFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
val view = inflater.inflate(R.layout.fragment_home, container, false)
val assetManager = context?.assets
val inputStream = assetManager?.open("intro_lingala.docx")
val textView = view.findViewById<TextView>(R.id.intro_lingala)
val text = StringBuilder()
val xwpfDoc = XWPFDocument(inputStream)
val paragraphs = xwpfDoc.paragraphs
for (paragraph in paragraphs) {
text.append(paragraph.text)
}
textView.text = text.toString()
inputStream?.close()
return view
}
Related
I am very new to taking an android application and for a project I need a BottomNavigati but I cannot get my data that comes from the beginning of the session to pass to the main fragment
Activity:
val bundle1 = Bundle()
bundle1.putString("User",User)
bundle1.putString("Correo",Correo)
bundle1.putString("Region",Region)
val navView: BottomNavigationView = findViewById(R.id.nav_view)
val navHostFragment = supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as NavHostFragment
val navController: NavController = navHostFragment.navController
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
val appBarConfiguration = AppBarConfiguration(
setOf(
R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications
)
)
navHostFragment.arguments = bundle1
setupActionBarWithNavController(navController, appBarConfiguration)
navView.setupWithNavController(navController)
HOMEFRAGMEN:
private lateinit var homeViewModel: HomeViewModel
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
homeViewModel = ViewModelProvider(this).get(HomeViewModel::class.java)
val root = inflater.inflate(R.layout.fragment_home, container, false)
val textView: TextView = root.findViewById(R.id.textView4)
return root
}
}
There is no direct access to HomeFragment from MainActivity in your case. BottomNavigation uses nested navigation architecture pattern with nested graphs.
More details here: Passing argument(s) to a nested Navigation architecture component graph
But you can use alternative way to pass data from Activity to Fragment using context.
Step 1 - Describe HomeFragmentData model:
data class HomeFragmentData(
val value: String
)
Step 2 - Describe HomeFragment interface:
interface IHomeFragment {
fun getHomeFragmentData(): HomeFragmentData
}
Step 3 - Implement interface to your Activity:
class MainActivity : AppCompatActivity(), IHomeFragment {
override fun getHomeFragmentData(): HomeFragmentData {
return HomeFragmentData(
value = "Home Fragment data"
)
}
// Rest of your code
}
Step 4 - Call function getHomeFragmentData() from HomeFragment using context:
class HomeFragment : Fragment() {
private var interactionListener: IHomeFragment? = null
override fun onAttach(context: Context) {
super.onAttach(context)
when(context) {
is IHomeFragment -> {
interactionListener = context
}
else -> throw RuntimeException("$context has to implement IHomeFragment")
}
}
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val root = inflater.inflate(R.layout.fragment_home, container, false)
val textView: TextView = root.findViewById(R.id.text_home)
interactionListener?.getHomeFragmentData().let {
textView.text = it?.value
}
return root
}
}
I have been working on an app where were people can watch videos like tik tok. At first I made it with recyclerview and later on I realized that I should use Vertical Viewpager. Then I used Viewpager2 but I faced some problems so I replaced it with viewpager1. But still it is not working. I am doing this in my fragment. I want to play videos from firebase in Vertical viewpager using videoview.
In Viewpager_Adapter u can see that I have called one more layout there which is viewer_page but when I run my app I don't get that layout in my fragment
ViewpagerAdapter
class ViewpagerAdapter(var context: Context) : PagerAdapter() {
lateinit var inflater: LayoutInflater
var contentDTOs: ArrayList<ContentDTOs> = arrayListOf()
var contentUidList: ArrayList<String> = arrayListOf()
override fun isViewFromObject(view: View, `object`: Any): Boolean {
return view == `object` as ConstraintLayout
}
override fun destroyItem(container: ViewGroup, position: Int, `object`: Any) {
container.removeView(`object`as ConstraintLayout)
}
override fun instantiateItem(container: ViewGroup, position: Int): Any {
inflater = context.getSystemService(container.context.toString())as LayoutInflater
val view =inflater.inflate(R.layout.viewer_page,container,false)
val exo : View? = view?.findViewById(R.id.videoviews)
val path = Uri.parse(contentDTOs[position].videourl)
val views = view.findViewById<VideoView>(R.id.videoviews)
views.setVideoURI(path)
views.requestFocus()
views.setOnPreparedListener {
views.start()
}
container.addView(view)
return view
}
override fun getCount(): Int {
return contentDTOs.size
}
}
Watch_video_fragment
#SuppressLint("ResourceAsColor")
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
val fragmentview = inflater.inflate(R.layout.fragment_watch_video, container, false)
fragmentview.videofragment?.setOnClickListener {
var fragment = Watch_video()
activity?.supportFragmentManager?.beginTransaction()?.replace(R.id.frag, fragment)
?.commit()
}
fragmentview.memefragment?.setOnClickListener {
var fragment = DetailViewFragment()
activity?.supportFragmentManager?.beginTransaction()?.replace(R.id.frag, fragment)
?.commit()
}
firestore = FirebaseFirestore.getInstance()
uid = FirebaseAuth.getInstance().currentUser?.uid
fragmentview.videofragment?.setOnClickListener {
var fragment = Watch_video()
activity?.supportFragmentManager?.beginTransaction()?.replace(R.id.frag, fragment)
?.commit()
}
//
fragmentview.vertical_viewpager.adapter = ViewpagerAdapter(requireContext())
fragmentview.vertical_viewpager.setPageTransformer(false
) { page, position ->
page.rotationY = position * -30 // animation style... change as you want..
}
Can u guys plz help me
I'm having a problem with this SmartToolbar, if I open the app and click on the chat or book icon it opens perfectly and shows the fragments, but if I click on another icon to open another fragment, when I go back to them they don't show more The fragments that should be on the smartToolbar, as shown in the prints below, bug everything! I need to help on this as soon as possible !!!
[Opens normally When I click on another item and go back to it, it no longer opens the SmartToolbar fragmentshere]2
enter image description here
I will send the homeAcitivity code, where is the layout that opens the fragments of the buttonNavigationBar
class HomeActivity : AppCompatActivity() {
var MY_ACCOUNT = 1
var LIBRARY = 2
var HOME = 3
var CHAT = 4
var SETTINGS = 5
private var Content: ConstraintLayout? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
supportActionBar!!.hide()
nav.show(HOME)
nav.setBackgroundColor(Color.TRANSPARENT)
abrirHome()
addOnMeowNavigattionBarIcons()
addOnNotificationInform()
chamarFragments()
}
fun abrirHome() {
val fragment = HomeFragment.newInstance()
addFragment(fragment)
}
fun addOnMeowNavigattionBarIcons() {
nav.add(MeowBottomNavigation.Model(MY_ACCOUNT, R.drawable.ic_baseline_account_circle_24))
nav.add(MeowBottomNavigation.Model(LIBRARY, R.drawable.ic_baseline_menu_book_24))
nav.add(MeowBottomNavigation.Model(HOME, R.drawable.ic_baseline_home_24))
nav.add(MeowBottomNavigation.Model(CHAT, R.drawable.ic_baseline_chat_24))
nav.add(MeowBottomNavigation.Model(SETTINGS, R.drawable.ic_baseline_settings_24))
}
fun addOnNotificationInform() {
nav.setCount(CHAT, "99")
}
fun chamarFragments() {
nav.setOnClickMenuListener {
when (it.id) {
HOME -> {
val fragment = HomeFragment.newInstance()
addFragment(fragment)
}
MY_ACCOUNT -> {
val fragment = MyAccountFragment.newInstance()
addFragment(fragment)
}
LIBRARY -> {
val fragment = LibraryFragment.newInstance()
addFragment(fragment)
}
CHAT -> {
val fragment = ChatFragment.newInstance()
addFragment(fragment)
}
SETTINGS -> {
val fragment = SettingsFragment.newInstance()
addFragment(fragment)
}
}
}
}
private fun addFragment(fragment: Fragment) {
supportFragmentManager
.beginTransaction()
.replace(R.id.parentfragments,fragment,fragment.javaClass.simpleName)
.addToBackStack(null)
.commit()
}
fun sair(view: View){
FirebaseAuth.getInstance().signOut()
val bundle = ActivityOptions.makeSceneTransitionAnimation(this).toBundle()
val intent = Intent(this, login::class.java)
startActivity(intent,bundle)
}
}
This is the code of the fragment Library that has a SmartToolbar that calls two more fragments within it, MyLibrary and Store
class LibraryFragment: Fragment() {
companion object{
fun newInstance():LibraryFragment {
val args = Bundle()
val fragment = LibraryFragment()
fragment.arguments = args
return fragment
}
}
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
return inflater.inflate(R.layout.library_fragment, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
val adapter = FragmentPagerItemAdapter(
fragmentManager, FragmentPagerItems.with(context)
.add("Minha Bilioteca", MyLibraryFragment::class.java)
.add("Loja", StoreFragment::class.java)
.create())
viewpager.adapter = adapter
viewpagertab.setViewPager(viewpager)
}
}
And this is the MyLibrary fragment that is shown inside the Library that is shown inside HomeActivity
class MyLibraryFragment: Fragment() {
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
return inflater.inflate(R.layout.mylibrary_fragment, container, false)
}
}
Beginner here. Creating an app using the Android Developer Studios Tabbed Activity Template. I have two xml, the generated fragment_main.xml that comes with the template and secondtab.xml for what I want to be the second tab.
This is the code generated by the template:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val sectionsPagerAdapter = SectionsPagerAdapter(this, supportFragmentManager)
val viewPager: ViewPager = findViewById(R.id.view_pager)
viewPager.adapter = sectionsPagerAdapter
val tabs: TabLayout = findViewById(R.id.tabs)
tabs.setupWithViewPager(viewPager)
val fab: FloatingActionButton = findViewById(R.id.fab)
fab.setOnClickListener { view ->
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show()
}
I've been reading through the ViewPager documentation and a lot of what I can find is making this all from scratch and I'm having trouble understanding. I feel like I'm missing something obvious. How do I add my secondtab.xml to this pregenerated template so it shows up when the user clicks on the second tab?
Yours SectionsPagerAdapter getItem function should looks like this:
class SectionsPagerAdapter(
private val context: Context,
fm: FragmentManager
) : FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
override fun getItem(position: Int) = when (position) {
0 -> FirstTabFragment()
1 -> SecondTabFragment()
else -> error("Unknown")
}
override fun getPageTitle(position: Int) = context.resources.getString(TAB_TITLES[position])
override fun getCount() = 2
}
Because by default in this template SectionsPagerAdapter always creates PlaceholderFragment:
override fun getItem(position: Int): Fragment {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1)
}
But in yours case you need use two different fragments with two different xml-layouts like this:
class FirstTabFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val root = inflater.inflate(R.layout.fragment_main, container, false)
val textView: TextView = root.findViewById(R.id.section_label)
return root
}
}
class SecondTabFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val root = inflater.inflate(R.layout.secondtab, container, false)
val textView: TextView = root.findViewById(R.id.section_label)
return root
}
}
Also make sure to add:
<TextView
android:id="#+id/section_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/activity_horizontal_margin"
android:layout_marginTop="#dimen/activity_vertical_margin"
android:layout_marginEnd="#dimen/activity_horizontal_margin"
android:layout_marginBottom="#dimen/activity_vertical_margin"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="#+id/constraintLayout"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintTop_creator="1" />
to the fragment xml
I couldn't implement list view in Fragment. I have just a ListView and ArrayList. My ArrayList is a String and takes 5 name.
class GroupFragment : Fragment() {
companion object {
fun newInstance(): GroupFragment {
return GroupFragment() } }
var arrayList= ArrayList<String>()
private lateinit var Adapter: ArrayAdapter<String>
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view: View = inflater.inflate(R.layout.fragment_group, container, false)
val activity = activity as Context
val listview = view.findViewById<ListView>(R.id.list_view)
arrayList.add("Ajay")
arrayList.add("Vijay")
arrayList.add("Prakash")
arrayList.add("Rohan")
arrayList.add("Vijay")
Adapter = ArrayAdapter(activity, android.R.layout.simple_list_item_1,arrayList )
listview.adapter = ChatAdapter(activity, android.R.layout.simple_list_item_1, arrayList)
return view
}
class ChatAdapter(var mCtx: Context, var resources:Int, var items:List<String>):ArrayAdapter<String>(mCtx, resources, items) {
override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
val layoutInflater:LayoutInflater = LayoutInflater.from(mCtx)
val view:View = layoutInflater.inflate(resources, null)
val titleTextView: TextView = view.findViewById(R.id.textView)
var mItem: String = items[position]
titleTextView.text = mItem
return super.getView(position, convertView, parent)
}
}
}
My code as above but it returns nothing. I didn't understand why ?? Is it a problem "Adapter" ?? Is there any problem context ??
Can you try directly
listview.adapter = ArrayAdapter(activity, android.R.layout.simple_list_item_1,arrayList )