Getheight() Px Or Dpi?

Help.I found the height of ListView and I do not know px or dpi? I need dpi final ListView actualListView = mPullRefreshListView.getRefreshableView(); actualListView.getViewTreeOb

Solution 1:

getheight return height in pixels, Below is what docs says..

publicfinalintgetHeight()

Since: API Level 1

Return the height of your view. Returns

The height of your view, in pixels.

You need to convert px into dp , use below ways to convert it to dp.

Convert pixel to dp:

publicintpxToDp(int px) {
    DisplayMetricsdisplayMetrics= getContext().getResources().getDisplayMetrics();
    intdp= Math.round(px / (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT));
    return dp;
}

or if you want it in px use below.

Convert dp to pixel:

publicintdpToPx(int dp) {
    DisplayMetricsdisplayMetrics= getContext().getResources().getDisplayMetrics();
    intpx= Math.round(dp * (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT));       
    return px;
}

Solution 2:

It returns pixels. http://developer.android.com/reference/android/view/View.html#getHeight() To convert pixels to dpi use this formula px = dp * (dpi / 160)

Solution 3:

Using this code you can get runtime Display's Width & Height

DisplayMetricsdisplaymetrics=newDisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
intheight= displaymetrics.heightPixels;
intwwidth= displaymetrics.widthPixels;

Solution 4:

The functions for converting dp to px and px to dp should look like below (in kotlin):

funconvertDpToPx(dp: Int): Int {
    val metrics = Resources.getSystem().displayMetrics
    return dp * (metrics.densityDpi / 160f).roundToInt()
  }

funconvertPxToDp(px: Int): Int {
  val metrics = Resources.getSystem().displayMetrics
  return (px / (metrics.densityDpi / 160f)).roundToInt()
}