android:set gray scale filter to imageView

Question

i use this library to show svg image on imageView , i want to show locked and unlocked mode with this imageView, when state is locked show imageView in grayscale color filter. something like this code on css :

-webkit-filter: grayscale(100%); opacity: 0.5;

how can i do this ? can anybody help me ? thanks

Answer 1

You should be able to make the image greyscale and faded using the following:

public static void  setLocked(ImageView v) {     ColorMatrix matrix = new ColorMatrix();     matrix.setSaturation(0);  //0 means grayscale     ColorMatrixColorFilter cf = new ColorMatrixColorFilter(matrix);     v.setColorFilter(cf);     v.setImageAlpha(128);   // 128 = 0.5 } 

And reset it using:

public static void  setUnlocked(ImageView v) {     v.setColorFilter(null);     v.setImageAlpha(255); }