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May 14, 2020 · Mobile Development

A Simpler Way to Grayscale Android Apps: Hardware‑Accelerated View Layer Trick

After receiving extensive feedback on a global grayscale hack that broke WebView and video playback, the author presents a cleaner, hardware‑accelerated solution using View.setLayerType with a Paint‑based ColorMatrix, explains its advantages, limitations, and when to apply it selectively.