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Code Quality Rank: L5
Programming language: Java
Tags: Other Widget    
Latest version: v1.1.0

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README

FlipView

About

This library is made to be very easy to use and at the same time be feature complete. With only a few lines of code you can have a flipping animation between your views, this looks and acts very much like the Flipboard application.

All flipping animations should be very smooth and i have added lighting effects so the flipping look more realistic.

Honeycomb (api lvl 11) or above is required for this library to work properly, however it will compile (and run, though without good performance) for much lower versions with just a few tweaks.

Download a compiled version of the sample here: https://www.dropbox.com/s/tvmdhre4ra8l41p/sample-debug-unaligned.apk

Installing

Gradle

Add the following gradle dependency exchanging x.x.x for the latest release.

dependencies {
    compile 'se.emilsjolander:android-flipview:x.x.x'
}

Usage

After installing, create a layout file container a something similar to this:

<se.emilsjolander.flipview.FlipView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:flipview="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/flip_view"
    flipview:orientation="vertical"
    flipview:overFlipMode="glow" />

In your activity/fragment you should do somthing like this:

FlipView flipView = (FlipView) findViewById(R.id.flip_view);
MyAdapter adapter = new MyAdapter();
flipView.setAdapter(adapter);

MyAdapterin this case is just a normal adapter, nothing different from on you would use with a ListView.

Api

I have designed the api to be as similar as possible to that of a ListView.

FlipView uses a regular ListAdapter, get and set the adapter with the following methods:

void setAdapter(ListAdapter adapter);
ListAdapter getAdapter();

Use the following methods to get the number of pages and what the current visible page is.

int getPageCount();
int getCurrentPage();

The following methods work like scrollTo, smoothScrollTo, scrollBy and smoothScrollBy from ListView.

void flipTo(int page);
void smoothFlipTo(int page);
void flipBy(int pageDelta);
void smoothFlipBy(int pageDelta);

Peaking is a way to inform the user that there is more content, or to teach the user how to interact with your application. Peaking can be done either once or until the FlipView has been interacted with.

void peakNext(boolean once);
void peakPrevious(boolean once);

FlipView supports both vertical (default) and horizontal flipping. I feel it would be wrong to change the orientation dynamically so i have limited it to being set via xml.

boolean isFlippingVertically();

This is how to set a listener on the FlipView to recieve callbacks.

void setOnFlipListener(OnFlipListener onFlipListener);

There are multiple over flip modes. The 2 that exists now are GLOW and RUBBER_BAND. GLOW is using the edge glow effect seen in all android lists and is the default over flip mode. RUBBER_BAND is more like the iOS way to inform of the end of lists, this is also a lot like the flipboard app informs users that they are on the first/last page. This can be set in xml using the following attribute. The mode can be either "glow" or "rubber_band".

flipview:overFlipMode="glow"

Here are the corrosponding java method calls. The OverFlipMode enum contains GLOW and RUBBER_BAND values.

void setOverFlipMode(OverFlipMode overFlipMode);

There is also a listener for detecting over flip. This is usefull when wanting to implement pull-to-refresh functionality or just detecting that the user is intressted in seeing more data.

void setOnOverFlipListener(OnOverFlipListener onOverFlipListener);

Much like AdapterView subclasses you can set a view that will be shown/hidden depending on if the FlipView has any data.

void setEmptyView(View empty);

Remember that you are responsible for adding the view that you pass into this method into the view hierarchy. A typical way of using this method is to include a view in your layout file with android:id="@+id/empty_view" and then putting the following code in your onCreate() method.

mFlipView.setEmptyView(findViewById(R.id.empty_view));

Contributing

Pull requests and issues are very welcome!

Feature request are also welcome but i can't make any promise that they will make it in. I would like to keep the library as general as possible, if you are unsure you can just ask before you code ;)