larswerkman / quickreturnlistview Goto Github PK

When the animation hides the quick return element and the first list item is not at the top of the screen you can see the placeholder element.

Steps to reproduce:

• Start example app.
• Scroll up until half the word, "Android" in the first list item is no longer visible.
• Scroll down, allowing the quick return to slide down, continuing until again the first list item is half covered.
• Scroll up slightly.

The placeholder element in the header is now visible and selectable. My thinking is the quick return should only slide up until its bottom edge hits the top edge of the first list item.

Video

This happens when the adapter has been already set and then dynamically adding items to the list.

I came to a situation with the QuickReturnListView where I noticed that the ListViewadapter is loading the whole set of rows, for example I have ListView with 21 rows, I have traced getView method on the baseAdapter and I found it's loading the whole 21 rows sequentially where the ListView should only load the visible item.

I have tried to remove "getComputedScrollY" method from "QuickReturnListView" class and the ListViewis no longer loading the whole set.

Thanks.

I've tried using your code but it severely lags when using a custom adapter. Looping through every view in computeScrollY() and inflating tons of views seems terribly inefficient and I have no clue how this code could work.

Am I missing something or have you tested this on any other adapter?

Hello. I think In your example it will be better to add

aList.getViewTreeObserver().addOnGlobalLayoutListener(onGlobalLayoutListener)

on Activity or Fragment Resume and remove it

historyList.getViewTreeObserver().removeGlobalOnLayoutListener(onGlobalLayoutListe
ner);

on Pause.

what should i change in my code?

Just like in Holo Color Picker

I need It in recyclerview!

I tried using theQuickReturnListView, and my heavy UI does not lag so much. Did the QuickReturnListView made scrolling smooth?

Hi,

In the AnimatedFragment under the onScroll method, case RETURNING the function getTranslationY() is being used in the last else case,

else if (mQuickReturnView.getTranslationY() != 0 && !noAnimation)

which causes an exception on those devices

Great work,

However when I was calling, setAdaptor once it has computedY it was erroring.

I have a button that allows people to add a new row.

The way round i found was to reset all varibles within QuickReturnListView.java

public void reset() {

    mItemCount = 0;
    mItemOffsetY = null;
    scrollIsComputed = false;
    mHeight = 0;

}

and call it before using setadaptor. This then recalculates without having to reload.

Thought i'd post incase someone has another idea or it helps someone

When the number of items in the list doesn't take up the whole screen's height there is a blank area above the quick return view.

It seems to increase as the number of items increases from 1 up to finally filling up the screen.

Hi! How can I use this lib, but with the "tabs" inside the "sticky view" and the scrollview inside a viewpager ->

------------------------
|        header        |
------------------------
|     Tab (Sticky)     |
------------------------
|     ViewPager        |
|    --------------    |
|   | ScrollView 1 |   |
|   | ScrollView 2 |   |
|   | ScrollView 3 |   |

then
------------------------
|     Tab (Sticky)     |
------------------------
|     ViewPager        |
|    --------------    |
|   | ScrollView 3 |   |
|   | ScrollView 4 |   |
|   | ScrollView 5 |   |

It's posible? 

I am plannig to use your lib but want to know if I can use both at the same time.

And again, like in Color Picker. ;)

When there is a padding on top of listView is present, scroll is not recognized.
I modified scrollY in your QuickReturnUtils .getScrollY(AbsListView lv) as "scrollY = -(c.getTop()) + lv.getPaddingTop();". Works fine now.