Awesome

##[DEPRECATED]

BlurBehind

Easily have blurred and transparent background effect on your Android views.

Before API level 14 there was a Window flag called FLAG_BLUR_BEHIND. It was used for "blurring everything behind a window" and is no longer supported by Android.

BlurBehind provides an easy way to have that effect, with customization, for your window without API level restrictions.

Usage

Invoke BlurBehind.getInstance().execute() method with caller Activity and the actual work as a Runnable.

dummyButton.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View v) {

		BlurBehind.getInstance().execute(MainActivity.this, new OnBlurCompleteListener() {
            @Override
            public void onBlurComplete() {
                Intent intent = new Intent(MainActivity.this, BlurredActivity.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);

                startActivity(intent);
            }
        });
	}
});

And use BlurBehind.getInstance().setBackground(Activity a) method on new View, which is an Activity in sample project:

BlurBehind.getInstance().setBackground(this);

You can optionally set alpha and filterColor:

BlurBehind.getInstance()
    .withAlpha(80)
    .withFilterColor(Color.parseColor("#0075c0")) //or Color.RED
    .setBackground(this);

Which will result in this:

Dependency

Run gradle install on blur-behind library project.
In your build.gradle:

repositories {
    mavenCentral()
    mavenLocal() //Add local m2 repository of yours
}
dependencies {
    compile 'com.faradaj:blur-behind:[LATEST_RELEASE_VERSION]'
}

In your pom.xml:

<dependency>
  <groupId>com.faradaj</groupId>
  <artifactId>blur-behind</artifactId>
  <version>[LATEST_RELEASE_VERSION]</version>
</dependency>

or you can clone and add blur-behind as a library project to yours.

Credits

Mario Klingmann, for the original StackBlur algorithm.
Yahel Bouaziz, for porting StackBlur to Android.
Nicolas Pomepuy, for his demonstration.

License

The MIT License (MIT)

Copyright (c) 2014 Gokberk Ergun

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.