private float getVerticalScrollFactorCompat() { if (this.mVerticalScrollFactor == 0.0F) { TypedValue var1 = new TypedValue(); Context var2 = this.getContext(); if (!var2.getTheme().resolveAttribute(16842829, var1, true)) { throw new IllegalStateException("Expected theme to define listPreferredItemHeight."); } this.mVerticalScrollFactor = var1.getDimension(var2.getResources().getDisplayMetrics()); } return this.mVerticalScrollFactor; }
/** * Gets the preferred height for each item in the ListView, in pixels, after accounting for screen * density. ImageLoader uses this value to resize thumbnail images to match the ListView item * height. * * @return The preferred height in pixels, based on the current theme. */ private int getListPreferredItemHeight() { final TypedValue typedValue = new TypedValue(); // Resolve list item preferred height theme attribute into typedValue getActivity() .getTheme() .resolveAttribute(android.R.attr.listPreferredItemHeight, typedValue, true); // Create a new DisplayMetrics object final DisplayMetrics metrics = new android.util.DisplayMetrics(); // Populate the DisplayMetrics getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics); // Return theme value based on DisplayMetrics return (int) typedValue.getDimension(metrics); }
/* Stolen from PhoneWindow */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { final DisplayMetrics metrics = getContext().getResources().getDisplayMetrics(); final boolean isPortrait = metrics.widthPixels < metrics.heightPixels; super.onMeasure(widthMeasureSpec, heightMeasureSpec); int width = getMeasuredWidth(); boolean measure = false; widthMeasureSpec = MeasureSpec.makeMeasureSpec(width, EXACTLY); final TypedValue tv = isPortrait ? mMinWidthMinor : mMinWidthMajor; if (tv.type != TypedValue.TYPE_NULL) { final int min; if (tv.type == TypedValue.TYPE_DIMENSION) { min = (int) tv.getDimension(metrics); } else if (tv.type == TypedValue.TYPE_FRACTION) { min = (int) tv.getFraction(metrics.widthPixels, metrics.widthPixels); } else { min = 0; } if (width < min) { widthMeasureSpec = MeasureSpec.makeMeasureSpec(min, EXACTLY); measure = true; } } // TODO: Support height? if (measure) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); } }