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A function to programmatically add views to ConstraintLayout with Flow
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| class ChipsView<T : Parcelable>(ctx: Context, attr: AttributeSet) : ConstraintLayout(ctx, attr) { | |
| ... | |
| private fun addSubviews() { | |
| val flow = Flow(context).apply { | |
| id = generateViewId() | |
| setWrapMode(Flow.WRAP_CHAIN) | |
| setHorizontalStyle(Flow.CHAIN_PACKED) | |
| setHorizontalAlign(Flow.HORIZONTAL_ALIGN_START) | |
| setHorizontalBias(0f) | |
| setVerticalGap(pillMarginWidth) | |
| setHorizontalGap(pillMarginWidth) | |
| setOrientation(Flow.HORIZONTAL) | |
| layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT) | |
| } | |
| val constraintSet = ConstraintSet().apply { | |
| clone(this@ChipsView) | |
| clear(flow.id, ConstraintSet.END) | |
| clear(flow.id, ConstraintSet.START) | |
| clear(flow.id, ConstraintSet.BOTTOM) | |
| connect(flow.id, ConstraintSet.START, ConstraintSet.PARENT_ID, ConstraintSet.START) | |
| connect(flow.id, ConstraintSet.END, ConstraintSet.PARENT_ID, ConstraintSet.END) | |
| connect(flow.id, ConstraintSet.BOTTOM, ConstraintSet.PARENT_ID, ConstraintSet.BOTTOM) | |
| } | |
| constraintSet.applyTo(this) | |
| addView(flow) | |
| val referenceIds = IntArray(pills.size) | |
| loop@ for ((index, pill) in pills.withIndex()) { | |
| val textView = pill.asTextView() | |
| referenceIds[index] = textView.id | |
| addView(textView) | |
| } | |
| flow.referencedIds = referenceIds | |
| post { requestLayout() } | |
| } | |
| } |
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