Android get layout parent id

Question

I would like to know what is the difference between View and ViewParent ? I am trying to get the Id of the parent of an ImageView but this I can't do :

myImageView.getParent().getId();

So is there another way to get this id ?

score 11 · Accepted Answer · answered Mar 31 '14 at 11:42

I would like to know what is the difference between View and ViewParent ?

A View is a class and a ViewParent is an interface.

Although many of the common layout classes implement the ViewParent interface it isn't guaranteed.

The problem you're having is that the myImageView.getParent() is returning a ViewParent which doesn't directly expose a getId() method.

As others have said, casting the ViewParent to a View using...

((View) myImageView.getParent()).getId();

...should work at compile time but be aware of the following...

If the parent View doesn't implement the ViewParent interface then the cast will fail.
The parent View must have a resource id defined in the layout file as (for example) android:id=@+id/myParentViewId or the call to getId will return null

score 3 · Answer 2 · answered Mar 31 '14 at 10:50

3

You have to cast your parent view to a View, so you can use getId() method, using ((View) myImageView.getParent()).getId()

answered Mar 31 '14 at 10:50

joao2fast4u

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score 1 · Answer 3 · edited Jul 22 '15 at 15:52

Surrounding imageview returns the parent layout id.

android:id="@+id/returnid"

example :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/returnid"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <iamageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="24dp"
        android:text="test"
        android:background="@drawable/white"
        />

</RelativeLayout>

score 1 · Answer 4 · answered Apr 10 '20 at 21:40

When you have a parent view with no id, but you do have a child with an id, the best option is to use parent:

val layoutWithId: FrameLayout = findViewById(R.id.withWithId)
val noIdLayout: RelativeLayout = (layoutWithId as FrameLayout).parent as RelativeLayout

A proper tool here to identify the view tree is the Layout Inspector from AS menu: Tools > Layout Inspector

It will give you a better idea of how your views are display in the tree, then you can easily which one is parent of who

Android get layout parent id

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