Android widget relativelayout layoutparams cannot be cast to

Getting java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams

Here I need to add textview at runtime. first I took reference of RelativeLayout to get layout params but unfortunately its throwing ClassCastException at RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams)contentLayout.getLayoutParams()

I also checked — FrameLayout to RelativeLayout ClassCastException even if there is no FrameLayout used, but it didn’t work. Since after replacing RelativeLayout with FrameLayout, I’m unable to add rule on layoutParams.

1 Answer 1

The Error is right and you are also right,but its a misinterpretation on both you and android’s part. You see when you Inflate a View with Parent_View being any sub class of a ViewGroup , android returns that View and treat it like a View if you want to treat it like a subclass of a ViewGroup you are going to have some cast Excetpions. You see i know this by experience but i cant give you a documented fact about this

Back to your question; you try to get the Layoutparams of your RelativeLayout which is the top most View of that xml, so i am thinking getLayoutParams() should return null since its not attached to a ViewGroup but its not which means its attached to a FrameLayout which is the Top most View for the Window or itself.

To solve it

instead of using this line

change only your xml, and your previous code will work fine

Источник

widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams

I’m having a few issues with my NavigationDrawer which I want to run from and Activity which contains 2 fragments . The idea is that the main fragment will be changed by selecting from the NavigationDrawer

I’m getting the following error when running:

My activity that contains the fragments XML is:

My NavigationDrawer XML is:

My Top fragment XML is:

My main fragment XML is:

My editFactFind java is:

and finally my NavigationDrawerFragment java is

I’ve attempted several things and from research and the error I believe one of my XML files is incorrectly laid out and it sees it as a Frame Layout instead of a drawer but I can’t figure out exactly where. I’ve tried amending the layouts in many ways but have had no luck.

2 Answers 2

It looks like there’s a few things wrong here, unless I’m missing something more complex that you’re trying to achieve. First, when you’re using this DrawerLayout, it should have the content and the drawer in separate sections, whereas here everything is grouped under one FrameLayout. The basic structure of the XML would be something like:

They don’t have to both be FrameLayouts, but the important thing is that there are two child views and they are in that order. Have a look at the guidance here.

The other main structural thing is that you don’t need a DrawerLayout in all of your Fragments as well. The DrawerLayout belongs to the Activity, each fragment can just show its contents.

Источник

java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams #13

Comments

StevenStarz commented Nov 23, 2017

11-23 16:40:50.623 17535-17535/compro.a99vr E/AndroidRuntime: FATAL EXCEPTION: main
Process: compro.a99vr, PID: 17535
java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2871)
at android.view.View.measure(View.java:17562)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2015)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1173)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1379)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5891)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5294)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)

The text was updated successfully, but these errors were encountered:

StevenStarz commented Nov 23, 2017

I got this error when i try to random touch, like zoom in, out, double click, zoom and then drag, actually i don’t know how to produce the bug, but sometimes got error by doing above action

SureshSc commented Dec 6, 2017

I am experiencing same

You can’t perform that action at this time.

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Русские Блоги

Код Android управляет шириной и высотой LinearLayout и сообщает об ошибке виджет. LinearLayout $ LayoutParams не может быть приведен к android.widget .

Ошибка: java.lang.ClassCastException: android.widget.LinearLayoutLayoutParams не может быть приведен к android.widget.RelativeLayoutLayoutParams, когда код изменяет ширину LinearLayout
Layout: родительским макетом LinearLayout является RelativeLayout
Таким образом, вам не нужно новое при изменении ширины LinearLayout в коде, вам нужно получить свой собственный LayoutParams

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Источник

java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams #13

Comments

StevenStarz commented Nov 23, 2017

11-23 16:40:50.623 17535-17535/compro.a99vr E/AndroidRuntime: FATAL EXCEPTION: main
Process: compro.a99vr, PID: 17535
java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17562)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2871)
at android.view.View.measure(View.java:17562)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2015)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1173)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1379)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5891)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5294)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)

The text was updated successfully, but these errors were encountered:

StevenStarz commented Nov 23, 2017

I got this error when i try to random touch, like zoom in, out, double click, zoom and then drag, actually i don’t know how to produce the bug, but sometimes got error by doing above action

SureshSc commented Dec 6, 2017

I am experiencing same

You can’t perform that action at this time.

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.

Источник