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Great question! Let’s walk through how to implement this layout with RelativeLayout (since you mentioned it’s a good fit) and address the button’s special cases clearly.

Core Layout Setup #

First, let’s nail the base requirements: image aligned to parent left, text bound to the image’s right edge and stretching to parent right, image vertically centered relative to text, and automatic line wrapping when text is long.

Here’s the breakdown of each element’s configuration:

• ImageView: Use android:layout_alignParentLeft="true" to stick it to the parent’s left edge. Add android:layout_centerVertical="true" to keep it centered vertically against the text (and button, when in one line).
• TextView: Set android:layout_toRightOf="@id/your_image_id" to anchor it to the image’s right, and android:layout_alignParentRight="true" to let it fill the remaining horizontal space. This ensures it wraps automatically when text overflows.

Handling the Button’s Special Cases #

The trickiest part is making the button behave correctly whether text is short (all elements in one line) or long (split into two lines). Here are the two most common scenarios and their fixes:

Scenario 1: Button stays inline with text (wraps to next line when text is long) #

If you want the button to sit right next to the text when it’s short, and drop to the end of the wrapped text when it’s long, nest the TextView and Button inside a horizontal LinearLayout. This container will handle the wrapping automatically.

Full Layout Code:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="16dp">

    <ImageView
        android:id="@+id/item_icon"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:src="@drawable/your_icon_resource" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/item_icon"
        android:layout_centerVertical="true"
        android:orientation="horizontal"
        android:gravity="center_vertical"
        android:weightSum="1">

        <TextView
            android:id="@+id/item_text"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Your dynamic text content here" />

        <Button
            android:id="@+id/action_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Action"
            android:layout_marginStart="8dp" />
    </LinearLayout>

</RelativeLayout>

This setup works because:

• The LinearLayout takes all space to the right of the image.
• The TextView uses layout_weight="1" to fill available space, wrapping when needed.
• The button stays aligned vertically with the text (and image) in both single-line and multi-line states.

Scenario 2: Button moves below text when text is long #

If you want the button to sit below the text only when text wraps (and stay inline when text is short), you’ll need a bit of code to dynamically adjust the button’s layout parameters.

Steps:

1. Set up the RelativeLayout with the image, text, and button (initially set the button to layout_toRightOf="@id/item_text").
2. In your activity/fragment, add a listener to the TextView to check its line count after text loads:

val textView = findViewById<TextView>(R.id.item_text)
val button = findViewById<Button>(R.id.action_button)

textView.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
    override fun onGlobalLayout() {
        textView.viewTreeObserver.removeOnGlobalLayoutListener(this)
        val params = button.layoutParams as RelativeLayout.LayoutParams
        
        if (textView.lineCount > 1) {
            params.addRule(RelativeLayout.BELOW, R.id.item_text)
            params.addRule(RelativeLayout.ALIGN_START, R.id.item_text)
            params.removeRule(RelativeLayout.TO_RIGHT_OF)
        } else {
            params.addRule(RelativeLayout.TO_RIGHT_OF, R.id.item_text)
            params.removeRule(RelativeLayout.BELOW)
            params.removeRule(RelativeLayout.ALIGN_START)
        }
        
        button.layoutParams = params
    }
})

This code checks if the text wraps to multiple lines, then adjusts the button’s position accordingly.

Final Notes #

RelativeLayout is perfect here because it gives you precise control over element positioning. The key is either using a nested LinearLayout for automatic wrapping or adding a bit of logic to handle dynamic button placement based on text length.

内容的提问来源于stack exchange，提问作者Alex Shiganov