I tried setting height/width manually in button but it didn't work. Then implemented Layoutparams. But size shows small and not getting required dp value.
XML
<Button
android:id="@+id/itemButton"
android:layout_width="88dp"
android:layout_height="88dp"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp"
android:background="#5e5789"
android:gravity="bottom"
android:padding="10dp"
android:text=""
android:textColor="#FFF"
android:textSize="10sp" />
Constructor:
public Item (int id, String name, String backgroundColor, String textColor, int width, int height){
this.id = id;
this.name = name;
this.backgroundColor = backgroundColor;
this.textColor = textColor;
this.width = width;
this.height = height;
}
Adapter:
@Override public void onBindViewHolder(final ViewHolder holder, int position) {
final Item item = items.get(position);
holder.itemView.setTag(item);
holder.itemButton.setText(item.getName());
holder.itemButton.setTextColor(Color.parseColor(item.getTextColor()));
holder.itemButton.setBackgroundColor(Color.parseColor(item.getBackgroundColor()));
ViewGroup.LayoutParams params = holder.itemButton.getLayoutParams();
params.width = item.getWidth();
params.height = item.getHeight();
holder.itemButton.setLayoutParams(params);
}
When you specify values programmatically in the LayoutParams
, those values are expected to be pixels.
To convert between pixels and dp you have to multiply by the current density factor. That value is in the DisplayMetrics
, that you can access from a Context
:
float pixels = dp * context.getResources().getDisplayMetrics().density;
So in your case you could do:
.
.
float factor = holder.itemView.getContext().getResources().getDisplayMetrics().density;
params.width = (int)(item.getWidth() * factor);
params.height = (int)(item.getHeight() * factor);
.
.
ViewGroup.LayoutParams params = ListView.getLayoutParams();
params.height = (int) (50 * customsDebts.size() * (getResources().getDisplayMetrics().density));
params.width = ViewGroup.LayoutParams.MATCH_PARENT;
ListView.setLayoutParams(params);
I believe you should be using a dp value defined in dimens along with getDimensionPixelSize . In a custom view, the Kotlin implementation would look like:
val layoutParams = layoutParams
val width = context.resources.getDimensionPixelSize(R.dimen.width_in_dp)
layoutParams.width = width
Option 1: Use dimens.xml
view.updateLayoutParams {
width = resources.getDimensionPixelSize(R.dimen.my_width)
height = resources.getDimensionPixelSize(R.dimen.my_height)
}
Option 2: Dispense with dimens.xml
/** Converts dp to pixel. */
val Int.px get() = (this * Resources.getSystem().displayMetrics.density).toInt()
view.updateLayoutParams {
width = 100.px
height = 100.px
}
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