Add and Remove Views in Android Dynamically?

user_444668 0
Viewed 274786

How do I add and remove views such as TextViews from Android app like on the original stock Android contacts screen where you press a small icon on the right side of a field and it adds or deletes a field which consists of a TextView and an editTextView (from what I can see).

Any examples on how to achieve this?

android-view android
10 Answers

Kotlin Extension Solution

Add removeSelf to directly call on a view. If attached to a parent, it will be removed. This makes your code more declarative, and thus readable.

myView.removeSelf()

fun View?.removeSelf() {
    this ?: return
    val parent = parent as? ViewGroup ?: return
    parent.removeView(this)
}

Here are 3 options for how to programmatically add a view to a ViewGroup.

// Built-in
myViewGroup.addView(myView)

// Reverse addition
myView.addTo(myViewGroup)

fun View?.addTo(parent: ViewGroup?) {
    this ?: return
    parent ?: return
    parent.addView(this)
}

// Null-safe extension
fun ViewGroup?.addView(view: View?) {
    this ?: return
    view ?: return
    addView(view)
}
user_9740450
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