How to get Android Material TextInputLayout startIcon View?

Issue

Is there a way to get a reference to the Android Material Library TextInputLayout startIcon's View? TextInputLayout.startIconDrawable only gets the Drawable, not the View. I'm trying to animate this View, so I need a reference. Here's an example below, I would like a View reference to the heart icon.

Solution

You can access the startIcon of the TextInputLayout using its resource identifier name to get the resource integer id using getIdentifer() of the Resources class.

The identifier name of the TextInputLayout is text_input_start_icon

To get the id of startIcon:

Kotlin

val startIconViewId = resources.getIdentifier("text_input_start_icon", "id", packageName)

Java

int startIconViewId = getResources().getIdentifier("text_input_start_icon", "id", getPackageName());

And to get the view itself (which is CheckableImageButton) to make your animation:

Kotlin

val textInputLayout = findViewById<TextInputLayout>(R.id.my_text_input_layout)
val startIcon: CheckableImageButton = textInputLayout.findViewById(startIconViewId)

Java

TextInputLayout textInputLayout = findViewById(R.id.my_text_input_layout);
CheckableImageButton startIcon = textInputLayout.findViewById(startIconViewId);

Note: To use this procedure you must set app:startIconDrawable in TextInputLayout in your layout.

Demo of my test:

Answered By - Zain