Question

I am displaying an image using ImageView container. the image needs to be resized when a user enters a specific value and clicks update

resize is just for display, the original resource remains as it is. NO editing, save, etc

xml layout

<ImageView 
android:background="@drawable/picture01" 
android:id="@+id/picture01holder" 
android:layout_below="@+id/TextView01" 
android:layout_height="wrap_content" 
android:layout_width="wrap_content" 
</ImageView>

main.java

final ImageView pic01 = (ImageView)findViewById(R.id.picture01);

now what do i do to dynamically assign this pic01 a size of my choice. just the function, i can implement it inside a button myself. i believe i have to use something like pic01.setLayoutParams but i dont know how to use it.

basically i want to overwrite layout_height=”wrap_content” and layout_width=”wrap_content” in .java

Answer 1

change the Imageview size by taking LayoutParams

    final ImageView pic01 = (ImageView)findViewById(R.id.picture01);
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(50, 50);
    pic01.setLayoutParams(layoutParams);