I have the following method in my Fragment
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
val fm = childFragmentManager
var prefsFragment: PrefsFragment? = fm.findFragmentByTag(tableName) as PrefsFragment?
if (prefsFragment == null) {
prefsFragment = PrefsFragment()
val ft = fm.beginTransaction()
ft.add(R.id.parameters_fragment_container, prefsFragment, tableName)
ft.commit()
fm.executePendingTransactions()
}
}
I have to say this is what the Java->Kotlin automagic translator did with my previous Java code (save for the ? at the end of the line where I find the PrefsFragment by tag), so it may not be entirely kosher. I'm learning Kotlin by doing.
Now, when I call executePendingTransactions(), my app crashes throwing java.lang.IllegalArgumentException with error message "Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState". Now, yes, savedInstanceState is in fact null, but what does it have to do with the call that apparently throws the exception? I made sure that no other values/variables are null, so I'd trust the error message... but why?
EDIT Here is the stack trace, and the source code that's giving me nightmares
https://gist.github.com/Morpheu5/8ec7e2064f53679405769b43c64f2cb7
E/AndroidRuntime: FATAL EXCEPTION: main
Process: net.morpheu5.bleedingscorecalculator, PID: 2685
java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at net.morpheu5.bleedingscorecalculator.CalculatorScreen$PrefsFragment.onCreatePreferences(CalculatorScreen.kt:0)
at android.support.v7.preference.PreferenceFragmentCompat.onCreate(PreferenceFragmentCompat.java:223)
at android.support.v4.app.Fragment.performCreate(Fragment.java:2075)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1060)
at android.support.v4.app.BackStackRecord.setLastIn(BackStackRecord.java:838)
at android.support.v4.app.BackStackRecord.calculateFragments(BackStackRecord.java:861)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:719)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1682)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:594)
at net.morpheu5.bleedingscorecalculator.CalculatorScreen.onActivityCreated(CalculatorScreen.kt:34)
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:2096)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1295)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1643)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1272)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1120)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1646)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:703)
at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:90)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1367)
at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:768)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:689)
at android.view.View.measure(View.java:19857)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275)
E/AndroidRuntime: at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6337)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:621)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
The exception isn't actually coming from that code. It is coming from your CalculatorScreen.PrefsFragment.onCreatePreferences() method. If you look there, it looks like --
override fun onCreatePreferences(savedInstanceState: Bundle, rootKey : String)
and it should be the following to allow savedInstanceState to be null --
override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey : String)
Related
I'm programmatically creating a constraint layout and adding a text view to it, but when I try to add the constraints it raises a java.lang.ClassCastException exception. Here is my code:
var textlayoutbottom = ConstraintLayout(this)
textlayout.addView(textlayoutbottom)
var typelabel = TextView(this)
textlayoutbottom.addView(typelabel)
textlayoutbottom.layoutParams = ConstraintLayout.LayoutParams(ConstraintLayout.LayoutParams.MATCH_PARENT, ConstraintLayout.LayoutParams.MATCH_PARENT)
typelabel.text = getAnimeType(anime.type)
var params = typelabel.layoutParams as ConstraintLayout.LayoutParams
params.leftToLeft = textlayoutbottom.id
params.bottomToBottom = textlayoutbottom.id
typelabel.requestLayout()
But the app crashes and it doesn't even show the error line.
Here is my log:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.my.package, PID: 5234
java.lang.ClassCastException: androidx.constraintlayout.widget.ConstraintLayout$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams
at android.widget.LinearLayout.measureVertical(LinearLayout.java:731)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1117)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:642)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1293)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.widget.ScrollView.onMeasure(ScrollView.java:340)
at android.view.View.measure(View.java:19857)
at androidx.constraintlayout.widget.ConstraintLayout$Measurer.measure(ConstraintLayout.java:792)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:583)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.layout(ConstraintWidgetContainer.java:682)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.solveLinearSystem(BasicMeasure.java:159)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.solverMeasure(BasicMeasure.java:290)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:119)
at androidx.constraintlayout.widget.ConstraintLayout.resolveSystem(ConstraintLayout.java:1578)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1690)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:146)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:689)
at android.view.View.measure(View.java:19857)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275)
E/AndroidRuntime: at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6337)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:621)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Any ideas?
Hey you are setting ConstraintLayout.LayoutParams to ConstraintLayout itself, try setting it to TextView and for textlayoutbottom use LinearLayout.LayoutParams
textlayoutbottom.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT) //for constraint layout
typeLabel.layoutParams = ConstraintLayout.LayoutParams(ConstraintLayout.LayoutParams.MATCH_PARENT, ConstraintLayout.LayoutParams.MATCH_PARENT)//for typeLabel
I'm trying to get a LiveData Observer to work, and everything was working, but after a week my app keeps crashing when attaching the fragment to my activity with the live data. The fragment is very simple, it has a RecyclerView that displays a list of Bloggers in a grid. The ViewModel is the following:
class SimpleBloggersViewModel : ViewModel() {
var bloggers: MutableLiveData<List<Blogger>> = MutableLiveData()
}
And I initialize it in my fragment using:
private val viewModel: SimpleBloggersViewModel by lazy {
ViewModelProvider(this).get(SimpleBloggersViewModel::class.java)
}
The code that causes the crash is the following:
override fun onAttach(context: Context) {
super.onAttach(context)
try {
viewModel.bloggers.observe(viewLifecycleOwner, Observer { changeObserver })
} catch (e: IllegalStateException) {
Log.e(TAG, "onAttach: Failed to attach BloggersFragment.", e)
}
}
Without the try/catch in the onAttach method, I get the following cryptic exception (and an app crash)
Process: com.mydomain.appname, PID: 31393
java.lang.IllegalStateException: Already attached
at androidx.fragment.app.FragmentManager.attachController(FragmentManager.java:3000)
at androidx.fragment.app.Fragment.performAttach(Fragment.java:2622)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1291)
at androidx.fragment.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1264)
at androidx.fragment.app.FragmentTransition.calculateFragments(FragmentTransition.java:1147)
at androidx.fragment.app.FragmentTransition.startTransitions(FragmentTransition.java:120)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2369)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2327)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2230)
at androidx.fragment.app.FragmentManager$3.run(FragmentManager.java:414)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)
After adding the try/catch block you see above, the exception ahs a little bit more info, but I still can't figure out what causes the problem.
java.lang.IllegalStateException: You can consumeRestoredStateForKey only after super.onCreate of corresponding component
at androidx.savedstate.SavedStateRegistry.consumeRestoredStateForKey(SavedStateRegistry.java:77)
at androidx.lifecycle.AbstractSavedStateViewModelFactory.create(AbstractSavedStateViewModelFactory.java:65)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:177)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:145)
at com.mydomain.appname.Bloggers.BloggersFragment$viewModel$2.invoke(BloggersFragment.kt:31)
at com.mydomain.appname.Bloggers.BloggersFragment$viewModel$2.invoke(BloggersFragment.kt:28)
at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
at com.mydomain.appname.Bloggers.BloggersFragment.getViewModel(Unknown Source:7)
at com.mydomain.appname.Bloggers.BloggersFragment.onAttach(BloggersFragment.kt:90)
at androidx.fragment.app.Fragment.performAttach(Fragment.java:2638)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1291)
at androidx.fragment.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1264)
at androidx.fragment.app.FragmentTransition.calculateFragments(FragmentTransition.java:1147)
at androidx.fragment.app.FragmentTransition.startTransitions(FragmentTransition.java:120)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2369)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2327)
at androidx.fragment.app.FragmentManager.execSingleAction(FragmentManager.java:2199)
at androidx.fragment.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:303)
at androidx.fragment.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:236)
at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1244)
at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1092)
at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1622)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at androidx.coordinatorlayout.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:743)
at androidx.coordinatorlayout.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:815)
at android.view.View.measure(View.java:22238)
at androidx.drawerlayout.widget.DrawerLayout.onMeasure(DrawerLayout.java:1119)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
2019-09-19 12:18:11.181 31963-31963/com.mydomain.appname E/BloggersFragment: at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:22238)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6682)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:725)
at android.view.View.measure(View.java:22238)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2531)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1558)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1826)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1446)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7014)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:916)
at android.view.Choreographer.doCallbacks(Choreographer.java:728)
at android.view.Choreographer.doFrame(Choreographer.java:660)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:902)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)
Please note that I call super on all of the overriding methods, before doing anything else, so the second exception still doesn't help me figure the bug out. Any help is greatly appreciated. Thank you for your time.
https://github.com/MobileSeoul/2017seoul-18
I brought open source from Github.
But, this code was designed to push only one button at a time.
So, as soon as I started, I changed 4 information to appear on the screen.
#Override
public void onResume() {
super.onResume();
String[] urls = {queryUrlFsn, queryasthmaWho, querybrainWho, queryskinWho};
if (checkInternet() == true) {
INTERNET_STATE = true;
thread(urls[0], date, 0);
new addThread(fsnIndex, "Food Poisoning Index", value[0], FSN_DIVIDE_VALUE, R.drawable.fsn, showDateTime(showDate)).start();
thread(urls[1], date, 1);
new addThread(asthmaWhoIndex, "Asthma lung disease possible index", value[1], WINTERLIFE_DIVIDE_VALUE, R.drawable.asthmawho, showDateTime(showDate)).start();
thread(urls[2], date, 2);
new addThread(brainWhoIndex, "Stroke index", value[2], WINTERLIFE_DIVIDE_VALUE, R.drawable.brainwho, showDateTime(showDate)).start();
thread(urls[3], date, 3);
new addThread(skinWhoIndex, "Skin disease potential index", value[3], WINTERLIFE_DIVIDE_VALUE, R.drawable.skinwho, showDateTime(showDate)).start();
} else {
Toast.makeText(getActivity(),"Network not connected", Toast.LENGTH_SHORT).show();
}
}
https://youtu.be/NuxS6MH55oA
↑ However, when moving from screen A back to screen A, there was a problem that the app was shutting down.
When I checked it, I did not have any problem when I removed the 4 pieces of information displayed on the screen A by clicking on the "trash can picture" and then moved to the screen A again.
So, in order to initialize the screen when I switch the screen, I did googleing.
I put the code presented in the stack overflow in the if / else statement below.
Reset/reload fragment container
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
MosquitoFragment mosquitoFragment = new MosquitoFragment();
WeatherFragment weatherFragment = new WeatherFragment();
ExpressionFragment expressionFragment = new ExpressionFragment();
AirFragment airFragment = new AirFragment();
int id = item.getItemId();
if (id == R.id.nav_weather) {
// I inserted this point.
transaction.replace(R.id.content_frame, weatherFragment);
}
else if (id == R.id.nav_mosquito) {
// I inserted this point.
transaction.replace(R.id.content_frame, mosquitoFragment);
}
else if (id == R.id.nav_expression) {
// I inserted this point.
transaction.replace(R.id.content_frame, expressionFragment);
}
else if (id == R.id.nav_air) {
// I inserted this point.
transaction.replace(R.id.content_frame, airFragment);
}
transaction.commit();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
However, when I move from A screen to A screen again, an error still occurs. How do we solve it? If I can not solve this problem, I will not fix this open source.
Error Code:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: kr.cds.jisulife, PID: 8226
java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:483)
at java.lang.Integer.valueOf(Integer.java:611)
at kr.cds.jisulife.BrainWhoIndex.getGradeToString(BrainWhoIndex.java:36)
at kr.cds.jisulife.WeatherFragment$ListViewAdapter.getView(WeatherFragment.java:452)
at android.widget.AbsListView.obtainView(AbsListView.java:2363)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1326)
at android.widget.ListView.onMeasure(ListView.java:1233)
at android.view.View.measure(View.java:19857)
at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
at android.view.View.measure(View.java:19857)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:714)
at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:90)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1391)
at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:784)
at android.view.View.measure(View.java:19857)
at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1081)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19857)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:689)
at android.view.View.measure(View.java:19857)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6337)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:621)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Image is not load to the fragment if i remove the Glide image code it's run fine
but adding image run with error
I think i get the error because of the fragment but i don't understand what is it
public void onBindViewHolder(AuthorListAdapter.MyViewHolder holder, int position) {
holder.name.setText(authorList.get(position).getName());
Glide.with(context).load(authorList.get(position).getImageUrl()).into(holder.image);
}
Here is the error:
java.lang.NullPointerException: You cannot start a load on a not yet attached View or a Fragment where getActivity() returns null (which usually occurs when getActivity() is called before the Fragment is attached or after the Fragment is destroyed).
at com.bumptech.glide.util.Preconditions.checkNotNull(Preconditions.java:27)
at com.bumptech.glide.Glide.getRetriever(Glide.java:607)
at com.bumptech.glide.Glide.with(Glide.java:638)
at com.example.hardik.myapplication.AuthorListAdapter.onBindViewHolder(AuthorListAdapter.java:42)
at com.example.hardik.myapplication.AuthorListAdapter.onBindViewHolder(AuthorListAdapter.java:22)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6508)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6541)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5484)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5750)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5589)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5585)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2231)
at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:556)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1518)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:610)
at android.support.v7.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:170)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3719)
at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3135)
at android.view.View.measure(View.java:19759)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6124)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19759)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6124)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:19759)
at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
at android.view.View.measure(View.java:19759)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6124)
at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:719)
at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:91)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1361)
at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:789)
at android.view.View.measure(View.java:19759)
at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1060)
at android.view.View.measure(View.java:19759)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6124)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:19759)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6124)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
at android.view.View.measure(View.java:19759)
Any help appreciated
Thank You
you can see in your log you get activity or context is null.
If you want to know why your activity is getting empty, then you can follow this answer. https://stackoverflow.com/a/43748449/8588259
then you can follow these steps,
1) write onAttach(Activity activity) in your fragment
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof Activity){
mActivity =(Activity) context;
}
}
2) pass this activity in your adapter
val adapter = MyAdapter(activity)
3) now you can write glide code
Glide.with(activity).load(imageUrl).into(view)
Try this
The issue itself occurs when getActivity() is called before the Fragment is attached or after the Fragment is destroyed.
So check getActivity() !=null and bind your image view
if( getActivity()!= null ){
Glide.with(getActivity()).load(authorList.get(position).getImageUrl()).into(holde
r.image);
}
if( getActivity() != null ){
Glide.with(getActivity()).load(authorList.get(position).getImageUrl()).into(holde
r.image);
}
So I'm getting this error only when I'm running the APK and app crashes immediately. (no matter signed, unsigned release mode or debug)
but when I run the app from android studio, everything's fine.
I have both kotlin and java files in the project.
and the error is caused by a kotlin file by the way.
any idea ?
here's the error log:
java.lang.IllegalAccessError: com.app.myapp.fragment.HomeFragment$onViewCreated$1
at com.app.myapp.fragment.HomeFragment.onViewCreated(HomeFragment.kt:155)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1430)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1740)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1809)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:799)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2580)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2367)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2322)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:2199)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:651)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:145)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1236)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1084)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1614)
at android.view.View.measure(View.java:20221)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:716)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:462)
at android.view.View.measure(View.java:20221)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1630)
at android.view.View.measure(View.java:20221)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:716)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:462)
at android.view.View.measure(View.java:20221)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6333)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:20221)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6333)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:747)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:629)
at android.view.View.measure(View.java:20221)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6333)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:20221)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6333)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:747)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:629)
at android.view.View.measure(View.java:20221)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6333)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3140)
at android.view.View.measure(View.java:20221)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2687)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1640)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1932)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1528)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7530)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:622)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMess
and here's the onViewCreated method:
override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
adapter = MyAdapter(list)
adapter!!.addOnItemClickListener { pos , Data->
...
}
}
there's an interface in recyclerView's adapter which passes data on each item Click. once again, this code works on debug mode and I used this structure a lot in other java classes.
any help would be appreciated. This thing is driving me crazy !