Pager Dots Indicator

Dots indicator is an Android library available for Jetpack Compose and XML 🚀

Don't forget to star the project if you like it! ==

Feel free to submit issues and enhancement requests !

How to

Gradle

repositories {
    google()
    mavenCentral()
}

dependencies {
    implementation("com.tbuonomo:dotsindicator:5.0")
}

For Jetpack Compose

Column {
    var pageCount by remember { mutableStateOf(5) }
    val pagerState = rememberPagerState()
    HorizontalPager(
        modifier = Modifier.padding(top = 24.dp),
        pageCount = pageCount,
        contentPadding = PaddingValues(horizontal = 64.dp),
        pageSpacing = 24.dp,
        state = pagerState
    ) {
        PagePlaceholderItem()
    }
    DotsIndicator(
        dotCount = pageCount,
        type = ShiftIndicatorType(dotsGraphic = DotGraphic(color = MaterialTheme.colorScheme.primary)),
        pagerState = pagerState
    )
}

4 types are available in JetpackCompose

ShiftIndicatorType

DotsIndicator(
    dotCount = pageCount,
    type = ShiftIndicatorType(dotsGraphic = DotGraphic(color = MaterialTheme.colorScheme.primary)),
    pagerState = pagerState
)

SpringIndicatorType

DotsIndicator(
    dotCount = pageCount,
    type = SpringIndicatorType(
        dotsGraphic = DotGraphic(
            16.dp,
            borderWidth = 2.dp,
            borderColor = MaterialTheme.colorScheme.primary,
            color = Color.Transparent
        ),
        selectorDotGraphic = DotGraphic(
            14.dp,
            color = MaterialTheme.colorScheme.primary
        )
    ),
    pagerState = pagerState
)

WormIndicatorType

DotsIndicator(
    dotCount = pageCount,
    type = WormIndicatorType(
        dotsGraphic = DotGraphic(
            16.dp,
            borderWidth = 2.dp,
            borderColor = MaterialTheme.colorScheme.primary,
            color = Color.Transparent,
        ),
        wormDotGraphic = DotGraphic(
            16.dp,
            color = MaterialTheme.colorScheme.primary,
        )
    ),
    pagerState = pagerState
)

BalloonIndicatorType

DotsIndicator(
    dotCount = pageCount,
    type = BalloonIndicatorType(
        dotsGraphic = DotGraphic(
            color = MaterialTheme.colorScheme.primary,
            size = 8.dp
        ),
        balloonSizeFactor = 2f
    ),
    dotSpacing = 20.dp,
    pagerState = pagerState
)

For XML

DotsIndicator

In your XML layout

<com.tbuonomo.viewpagerdotsindicator.DotsIndicator
    android:id="@+id/dots_indicator"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:dotsColor="@color/material_white"
    app:dotsCornerRadius="8dp"
    app:dotsSize="16dp"
    app:dotsSpacing="4dp"
    app:dotsWidthFactor="2.5"
    app:selectedDotColor="@color/md_blue_200"
    app:progressMode="true"
    />

Custom Attributes

Attribute	Description
dotsColor	Color of the dots
selectedDotColor	Color of the selected dot (by default the dotsColor)
progressMode	Lets the selected dot color to the dots behind the current one
dotsSize	Size in dp of the dots (by default 16dp)
dotsSpacing	Size in dp of the space between the dots (by default 4dp)
dotsWidthFactor	The dots scale factor for page indication (by default 2.5)
dotsCornerRadius	The dots corner radius (by default the half of dotsSize for circularity)

In your Kotlin code

    val dotsIndicator = findViewById<DotsIndicator>(R.id.dots_indicator)
    val viewPager = findViewById<ViewPager>(R.id.view_pager)
    val adapter = ViewPagerAdapter()
    viewPager.adapter = adapter
    dotsIndicator.attachTo(viewPager)

SpringDotsIndicator

In your XML layout

<com.tbuonomo.viewpagerdotsindicator.SpringDotsIndicator
    android:id="@+id/spring_dots_indicator"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:dampingRatio="0.5"
    app:dotsColor="@color/material_white"
    app:dotsStrokeColor="@color/material_yellow"
    app:dotsCornerRadius="2dp"
    app:dotsSize="16dp"
    app:dotsSpacing="6dp"
    app:dotsStrokeWidth="2dp"
    app:stiffness="300"
    />

Custom Attributes

Attribute	Description
dotsColor	Color of the indicator dot
dotsStrokeColor	Color of the stroke dots (by default the indicator color)
dotsSize	Size in dp of the dots (by default 16dp)
dotsSpacing	Size in dp of the space between the dots (by default 4dp)
dotsCornerRadius	The dots corner radius (by default the half of dotsSize for circularity)
dotsStrokeWidth	The dots stroke width (by default 2dp)
dampingRatio	The damping ratio of the spring force (by default 0.5)
stiffness	The stiffness of the spring force (by default 300)

In your Kotlin code

    val springDotsIndicator = findViewById<SpringDotsIndicator>(R.id.spring_dots_indicator)
    val viewPager = findViewById<ViewPager>(R.id.view_pager)
    val adapter = ViewPagerAdapter()
    viewPager.adapter = adapter
    springDotsIndicator.attachTo(viewPager)

WormDotsIndicator

In your XML layout

<com.tbuonomo.viewpagerdotsindicator.WormDotsIndicator
    android:id="@+id/worm_dots_indicator"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:dotsColor="@color/material_blueA200"
    app:dotsStrokeColor="@color/material_yellow"
    app:dotsCornerRadius="8dp"
    app:dotsSize="16dp"
    app:dotsSpacing="4dp"
    app:dotsStrokeWidth="2dp"
    />

Custom Attributes

Attribute	Description
dotsColor	Color of the indicator dot
dotsStrokeColor	Color of the stroke dots (by default the indicator color)
dotsSize	Size in dp of the dots (by default 16dp)
dotsSpacing	Size in dp of the space between the dots (by default 4dp)
dotsCornerRadius	The dots corner radius (by default the half of dotsSize for circularity)
dotsStrokeWidth	The dots stroke width (by default 2dp)

In your Kotlin code

    val wormDotsIndicator = findViewById<WormDotsIndicator>(R.id.worm_dots_indicator)
    val viewPager = findViewById<ViewPager>(R.id.view_pager)
    val adapter = ViewPagerAdapter()
    viewPager.adapter = adapter
    wormDotsIndicator.attachTo(viewPager)

Support of ViewPager2

The attachTo can take a ViewPager or a ViewPager2

Help Maintenance

If you could help me to continue maintain this repo, buying me a cup of coffee will make my life really happy and get much energy out of it.

Changelog

5.0

• Add Jetpack Compose support with 4 types: ShiftIndicatorType, SpringIndicatorType, WormIndicatorType, BalloonIndicatorType

4.3

• Fix #144, #143, #139, #135, #133, #131, #126, #109, #95, #93, #86, #85, #80, #78, #73, #68, #58
• Methods setViewPager and setViewPager2 are now deprecated and replaced by attachTo(...)

4.2

Fix #115 The library is now on MavenCentral. The library name moves from com.tbuonomo.andrui:viewpagerdotsindicator to com.tbuonomo:dotsindicator

4.1.2

Fix #55 and #56

4.1.1

Fix crash

4.1

• Support RTL (fix #32 and #51)

4.0

• Support of ViewPager2 (fix #40)
• Convert all the project to Kotlin
• Migration to AndroidX
• Fix #37: findViewById, causing missing adapter error

3.0.3

• Fix #20: Dots indicator initialises with the wrong number of dots initially

3.0.2

• Add attribute selectedDotColor and progressMode to DotsIndicator
• Fix RTL issues and improve DotsIndicator globally

2.1.0

• Add attribute dotsStrokeColor to SpringDotsIndicator and WormDotsIndicator

License

Copyright 2016 Tommy Buonomo

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.