Multiple Color Effects in Phimpme Camera

The Phimpme Android’s camera comes with an option to switch between various color effects along with various other functionalities. To select different color modes, we have added a toggle button at the top right corner of the camera interface and which switches from the range of color effect available and on long clicking the toggle button, it resets the effect to normal. To show the functionality of the toggle button we have made use of the Showcase view in the application which displays all the functionality of the toggle button on the first run of the application.

In this tutorial, I will be discussing how we implemented the color effects feature in the Phimpme Android application with the help of some code snippets.

Step 1

Firstly we have to create a toggle button in the camera interface and have to set the onclicklistener on it to change the various color effects on the button click. This can be done with the following code snippet.

toggle.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
       //Actions here
}

Similarly, we have to set the long click listener on the toggle button which will handle the reset color effects function in the application.

Step 2

The next thing we need is to extract all the color modes supported by the device and to create an Arraylist of it so that we can call the respective values by just increasing the index on toggle button click. This can be done with the help of the following code snippet.

Now we have all the supported color modes along with the normal mode stored in the values list. For instance,

  1. Mono
  2. Negative
  3. Solarize
  4. Sepia
  5. Neon

Hence on button click, we have to get the color values using the list index and we have to set the value to the camera parameter from where we extracted the supported color effects.

For this, we can make use of a static variable named colorNum and initialise it with 0 and on button click we can just increment this variable by 1 and can set the color effect using the code snippet provided below

final String color = colorEffect.get(colorNum);
CameraController.SupportedValues supported_values = camera_controller.setColorEffect(color);
if (supported_values != null) {
    color_effects = supported_values.values;
   applicationInterface.setColorEffectPref(supported_values.selected_value);
}

And on the long click listener method of the camera, we can set the value of the variable to be 0 and can set the color values accordingly.

To get the full source code on changing the color effects in the camera and to know about adding the showcase view which we have used in this to show the functionality. Please refer to the Phimpme Android repository.

Resources

  1. Open camera Github repository
  2. Color effects in Android camera
  3. Camera API developer page
  4. Amlcurran Showcaseview