CircleImageView

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CircleImageView

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A circular ImageView for Android

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CircleImageView
===============

A fast circular ImageView perfect for profile images. This is based on [RoundedImageView from Vince Mi](https://github.com/vinc3m1/RoundedImageView) which itself is based on techniques recommended by [Romain Guy](https://twitter.com/romainguy).

![CircleImageView](https://raw.github.com/hdodenhof/CircleImageView/master/screenshot.png)

It uses a BitmapShader and **does not**:
* create a copy of the original bitmap
* use a clipPath (which is neither hardware accelerated nor anti-aliased)
* use setXfermode to clip the bitmap (which means drawing twice to the canvas)

As this is just a custom ImageView and not a custom Drawable or a combination of both, it can be used with all kinds of drawables, i.e. a PicassoDrawable from [Picasso](https://github.com/square/picasso) or other non-standard drawables (needs some testing though).

Gradle
------
```
dependencies {
    ...
    implementation 'de.hdodenhof:circleimageview:3.1.0'
}
```

Usage
-----
```xml
<de.hdodenhof.circleimageview.CircleImageView
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/profile_image"
    android:layout_width="96dp"
    android:layout_height="96dp"
    android:src="@drawable/profile"
    app:civ_border_width="2dp"
    app:civ_border_color="#FF000000"/>
```

Limitations
-----------
* The ScaleType is always CENTER_CROP and you'll get an exception if you try to change it. This is (currently) by design as it's perfectly fine for profile images.
* Enabling `adjustViewBounds` is not supported as this requires an unsupported ScaleType
* If you use an image loading library like Picasso or Glide, you need to disable their fade animations to avoid messed up images. For Picasso use the `noFade()` option, for Glide use `dontAnimate()`. If you want to keep the fadeIn animation, you have to fetch the image into a `Target` and apply a custom animation yourself when receiving the `Bitmap`.
* Using a `TransitionDrawable` with `CircleImageView` doesn't work properly and leads to messed up images.

FAQ
---
**How can I use a `VectorDrawable` with `CircleImageView`?**

Short answer: you shouldn't. Using a `VectorDrawable` with `CircleImageView` is very inefficient. You should modify your vectors to be in a circular shape and use them with a regular ImageView instead.

**Why doesn't `CircleImageView` extend `AppCompatImageView`?**

Extending `AppCompatImageView` would require adding a runtime dependency for the support library without any real benefit.

**How can I add a selector (e.g. ripple effect) bound to a circle?**

There's currently no direct support for a circle bound selector but you can follow [these steps](https://github.com/hdodenhof/CircleImageView/issues/153#issuecomment-249692049) to implement it yourself.

**How can I add a gap between image and border?**

Adding a gap is also not supported directly but [there's a workaround](https://github.com/hdodenhof/CircleImageView/issues/133#issuecomment-225437930).

Changelog
---------
* **3.1.0**
    * Align bitmap paint flags with BitmapDrawable (improves scaling)
* **3.0.2**
    * Fix NPE during initialization on API level <= 19
    * Fix wrong outline being provided if circular transformation is disabled
* **3.0.1**
    * Fix touch event not fired if view is empty
    * Fix touchable area limited to a circle even if transformation is disabled
* **3.0.0**
    * Limit touch event handling to circle area
    * Migrate to AndroidX
    * Remove deprecated properties and methods
* **2.2.0**
    * Add support for elevation
    * Add circle background color attribute to replace fill color
* **2.1.0**
    * Add support for padding
    * Add option to disable circular transformation
    * Fix hairline gap being drawn between image and border under some conditions
    * Fix NPE when using tint attribute (which is not supported)
    * Deprecate fill color as it seems to cause quite some confusion
* **2.0.0**
    * BREAKING: Custom xml attributes are now prefixed with "civ_"
    * Graceful handling of incompatible drawables
    * Add support for a fill color shown behind images with transparent areas
    * Fix dimension calculation issues with small images
    * Fix bitmap not being cleared when set to null
* **1.3.0**
    * Add setBorderColorResource(int resId)
    * Add resource type annotations
    * Add border_overlay attribute to allow drawing border on top of the base image
* **1.2.2**
    * Add ColorFilter support
* **1.2.1**
    * Fix ColorDrawables not being rendered properly on Lollipop
* **1.2.0**
    * Add support for setImageURI(Uri uri)
    * Fix view not being initialized when using CircleImageView(Context context)
* **1.1.1**
    * Fix border being shown although border width is set to 0
* **1.1.0**
    * Add support for ColorDrawables
    * Add getters and setters for border color and border width
* **1.0.1**
    * Prevent crash due to OutOfMemoryError
* **1.0.0**
    * Initial release

License
-------

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.

CircleImageView

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