CODEWITHSUNDEEP
androidandroid-fragmentskotlin
Max
Max

Reputation: 1025

Fragment: RelativeLayout Visibility not changeable in OnCreateView

(Im using Kotlin) So here is my OnCreateView in the Fragment.

override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view: View = inflater!!.inflate(R.layout.fragment_bots, container, false)

        BotDiv2.visibility = View.VISIBLE
        startUp()
        return view
    }

and here is the xml of the relativelayout:

<RelativeLayout
                android:id="@+id/BotDiv2"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="33.3"
                android:visibility="invisible">

                <ImageButton
                    android:id="@+id/BotBtn1"
                    android:layout_width="90dp"
                    android:layout_height="90dp"
                    android:layout_centerHorizontal="true"
                    android:layout_centerVertical="true"
                    android:background="@null"
                    android:scaleType="fitCenter"
                    android:src="@android:drawable/btn_star_big_on" />

                <TextView
                    android:id="@+id/uselessLevel1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_above="@+id/BotBtn1"
                    android:layout_alignStart="@+id/BotBtn1"
                    android:text="Level:" />

                <TextView
                    android:id="@+id/BotWorth1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/BotBtn1"
                    android:layout_centerHorizontal="true"
                    android:text="$500"
                    android:textAppearance="@style/TextAppearance.AppCompat.Large" />

                <TextView
                    android:id="@+id/levelBot1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_above="@+id/BotBtn1"
                    android:layout_alignEnd="@+id/BotBtn1"
                    android:text="1" />

            </RelativeLayout>

In want to use it in another Function, but this:

BotDiv2.visibility = View.VISIBLE

causes NPEs I also tried to use findViewById, but that causes an NPE as well (or not affecting, cuz of Kotlin's "?").

Upvotes: 0

Views: 83

Answers (1)

zsmb13
zsmb13

Reputation: 89548

Other than the ID seemingly not being right, as mentioned in a comment above...

Since at this stage your View is not set for your Fragment yet (you haven't returned it to the framework), you can't call findViewById on the Fragment itself, but you can make a findViewById call on the newly inflated View instead:

val view: View = inflater!!.inflate(R.layout.fragment_bots, container, false)
val bd2 = view.findViewById(R.id.BotDiv2)
bd2.visibility = View.VISIBLE

If you're using Kotlin Android Extensions, you can do the same with this syntax:

val view: View = inflater!!.inflate(R.layout.fragment_bots, container, false)
view.BotDiv2.visibility = View.VISIBLE

Upvotes: 2

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