Using hand-crafted code, you can control how much your backing array grows -- I suspect ARRAY_CAPACITY_INCREMENT is quite a big number.
Cheers On Fri, Apr 3, 2009 at 1:44 PM, [email protected] <[email protected]> wrote: > > I notice in the source code they are not used in critical loops, e.g. > in View.java : > http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/ViewGroup.java;h=e686d1c20bd21eaa050ff3bf9187b549ee7b1355;hb=HEAD > > I can see this kind of code which would be much easier implemented as > an ArrayList : > > 1867 private void addInArray(View child, int index) { > 1868 View[] children = mChildren; > 1869 final int count = mChildrenCount; > 1870 final int size = children.length; > 1871 if (index == count) { > 1872 if (size == count) { > 1873 mChildren = new View[size + > ARRAY_CAPACITY_INCREMENT]; > 1874 System.arraycopy(children, 0, mChildren, 0, > size); > 1875 children = mChildren; > 1876 } > 1877 children[mChildrenCount++] = child; > 1878 } else if (index < count) { > 1879 if (size == count) { > 1880 mChildren = new View[size + > ARRAY_CAPACITY_INCREMENT]; > 1881 System.arraycopy(children, 0, mChildren, 0, > index); > 1882 System.arraycopy(children, index, mChildren, > index + 1, count - index); > 1883 children = mChildren; > 1884 } else { > 1885 System.arraycopy(children, index, children, index > + 1, count - index); > 1886 } > 1887 children[index] = child; > 1888 mChildrenCount++; > 1889 } else { > 1890 throw new IndexOutOfBoundsException("index=" + index > + " count=" + count); > 1891 } > 1892 } > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
