Convert dip to px in Android
AndroidDensity Independent-PixelAndroid Problem Overview
I had written method to get the pixels from dip but it is not working. It give me runtime error.
Actually I was running this method in separate class and initialized in my Activity class
Board board = new Board(this);
board.execute(URL);
This code runs asynchronously. Please help me.
public float getpixels(int dp){
//Resources r = boardContext.getResources();
//float px = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpis, r.getDisplayMetrics());
final float scale = this.boardContext.getResources().getDisplayMetrics().density;
int px = (int) (dp * scale + 0.5f);
return px;
}
Android Solutions
Solution 1 - Android
Try this:
Java
public static float dipToPixels(Context context, float dipValue) {
DisplayMetrics metrics = context.getResources().getDisplayMetrics();
return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dipValue, metrics);
}
Kotlin
fun Context.dipToPixels(dipValue: Float) =
TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dipValue, resources.displayMetrics)
Solution 2 - Android
You can add the dp value in dimen.xml and use
int pixels = getResources().getDimensionPixelSize(R.dimen.idDimension);
It's easier...
Solution 3 - Android
The formula is: px = dp * (dpi / 160), for having on a 160 dpi screen. See Convert dp units to pixel units for more information.
You could try:
public static int convertDipToPixels(float dips) {
return (int) (dips * appContext.getResources().getDisplayMetrics().density + 0.5f);
}
Hope this helps...
Solution 4 - Android
Try this for without passing context:
public static float dipToPixels(float dipValue) {
return TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
dipValue,
Resources.getSystem().getDisplayMetrics()
);
}