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Description

A PagedGrid is a ViewPager which pages are GridLayout with equal distributed rows and columns.This project is an Android library, written in Kotlin, that helps you create a PagedGrid component and manage its pages and cell views.

This module provides a component with no added features, but a simple way to rapidly create particular Android views reducing the complexity, for example control panels, launchers and tables.

Programming language: Kotlin
License: MIT License
Latest version: v0.0.7

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README

API

PagedGrid

A PagedGrid is a ViewPager which pages are GridLayout with equal distributed rows and columns. This project is an Android library, written in Kotlin, that helps you create a PagedGrid component and manage its pages and cell views.

Motivation

This module provides a component with no added features, but a simple way to rapidly create particular Android views reducing the complexity, for example control panels, launchers and tables.

[](readme_res/portrait.gif)

Getting started

Add the module as dependency using the latest version number, specified above.

Add the JitPack repository to your build file

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Version

Add the dependency using the latest version number, specified above.

dependencies {
    implementation 'com.github.arabello:PagedGrid:x.x.x'
}

It is possible to build the latest commit on the master branch, using the tag master-SNAPSHOT

dependencies {
    implementation 'com.github.arabello:PagedGrid:master-SNAPSHOT'
}

Usage

Notation: (ColumnIndex, RowIndex) [ColumnIndex, RowIndex]

Add the custom view to your layout

<io.matteopellegrino.pagedgrid.PagedGridView
    android:id="@+id/pagedGridView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

Assign an instance of GridAdapter to the PagedGrid

val gridAdapter = GridAdapter(arrayOf())
pagedGridView.adapter = gridAdapter

Create an EmptyGrid page, specifying the number of columns and rows

val page1 = EmptyGrid(4, 5)

The page (grid) is a matrix of Element interface. DrawableIcon and BitmapIcon are ready to use implementation of Element. Add an element to the page using column and rows indexes.

page1[0, 2] = DrawableIcon("Photo Filter", R.drawable.ic_photo_filter_black_24dp)
page1[2, 2] = DrawableIcon("Portrait", R.drawable.ic_portrait_black_24dp)

You can create your own element just extending AbstractElement.

page1[1, 1] = object : AbstractElement() {
    override fun inflateView(parent: ViewGroup): View {
        val layout = LayoutInflater.from(parent.context).inflate(R.layout.custom, null)
        val img = layout.findViewById(R.id.img)
        val txt = layout.findViewById(R.id.txt)
        img.scaleType = ImageView.ScaleType.CENTER_CROP
        img.setImageBitmap(BitmapFactory.decodeResource(resources, R.mipmap.img_4))
        txt.setText(R.string.mytext)
        return layout
    }
}

Once pages are ready, add them (or assign) to the adapter and notify the changes.

gridAdapter.pages += page1
gridAdapter.notifyDataSetChanged()

The method setOnInflateViewListener allows you to access the cell View when created, extremely useful for attaching Android events. You can easily iterate over pages and cells (elements) as showed below.

gridAdapter.pages.forEach { page ->
    page.forEachIndexed { x, y, elem ->

        elem.setOnInflateViewListener { view ->
            view.setOnClickListener {
                Toast.makeText(baseContext, "View on ($x, $y) clicked", Toast.LENGTH_SHORT).show()
            }
        }
    }
}

For further details and specific uses case, please see the sample app

Personalization

Here the personalization properties (first value as default)

 <io.matteopellegrino.pagedgrid.PagedGridView
        app:animationEnabled="true|false"
        app:orientation="portrait|landscape"
        app:pageIndicatorUnselected="@android:color/gray"
        app:pageIndicatorSelected="@android:color/black" />

Animation

When the content of a page change and it is currently displayed, the component animates the transition to the new content as showed below.

[](readme_res/animation.gif)

Landscape

The landscape mode is supported, but it is severely rigid. The component is rotated clockwise only and the scroll becomes vertical. In this way

the coordinate of each element related to a page remain the same considering the top-left corner as the origin (0,0)

[](readme_res/landscape.gif)

Credits

For the third party dependencies, thanks to

For the sample app illustrations, thanks to unDraw

License

MIT License

Copyright (c) 2018 Matteo Pellegrino

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


*Note that all licence references and agreements mentioned in the PagedGrid README section above are relevant to that project's source code only.