CODEWITHSUNDEEP
javaandroidandroid-studio
Yaniv
Yaniv

Reputation: 125

how to set ImageView width/height automatically

I have an Image with aspect ratio of (height)3:(width)1 I want this image to fit the width of the screen and keep the aspect ratio.

for example if the screen width is 720 them the width of the image will be 720 and the height of the image will be 720 x 3 (2160)

Upvotes: 1

Views: 332

Answers (2)

Subhrajyoti Sen
Subhrajyoti Sen

Reputation: 1725

Solution without ConstraintLayout.

class AspectRatioImageView @JvmOverloads constructor(
  context: Context,
  attrs: AttributeSet? = null,
  defStyleAttr: Int = 0
): AppCompatImageView(context, attrs, defStyleAttr) {

  override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec)
    var height = (measuredWidth * 3 ).toInt()

    setMeasuredDimension(width, height)
  }
}

You can then use width as match_parent and any height while using AspectRatioImageView in XML.

Upvotes: 2

Yaniv
Yaniv

Reputation: 125

Hi I managed to solve my problem here is the solution:

 <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:background="@drawable/sign1s"
            app:layout_constraintDimensionRatio="W,230:350"
            tools:ignore="MissingConstraints" />

    </androidx.constraintlayout.widget.ConstraintLayout>

Upvotes: 1

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