Android - Gridlayout android.support.v7.widget.GridLayout cannot be cast to android.widget.GridLayout

Question

I want to create a GridLayout able to run in all the APIs.

The thing is, when i use GridLayout instead of android.support.v7.widget.GridLayo

Answer 1

Replace

import android.widget.GridLayout;

with

import android.support.v7.widget.GridLayout;

This was my issue.

Answer 2

Caused by: java.lang.ClassCastException: android.support.v7.widget.GridLayout cannot be cast to android.widget.GridLayout at devector.dom.gridtest.MainActivity.onCreate(MainActivity.java:21)

=> From this line, it's clear that you must be importing and referring to android.widget.GridLayout where as you have taken android.support.v7.widget.GridLayout in XML layout. Use and refer either of any in both layout and class file.

Answer 3

Just change the format a little bit: androidx.gridlayout.widget.GridLayout newGrid= (androidx.gridlayout.widget.GridLayout) findViewById (R.id.yourGrid);

Answer 4

I got the same issue. I solved it by using the GridLayout from package android.support.v7.widget.GridLayout, since I was previously using the android.widget.GridLayout package which gave me the error.

Answer 5

import androidx.gridlayout.widget.GridLayout

Do this in you MainActiviy sheet.

You should edit the import.android.widget.GridLayout

as

import androidx.gridlayout.widget.GridLayout

Answer 6

I had the same issue and I just go to activity_main.xml and replaced

android.support.v7.widget.GridLayout

to this:

android.widget.GridLayout