不幸的是,您無法自定義最近視圖中縮略圖的顏色。
正如你可以看到TaskViewThumbnail縮略圖的默認顏色(0xffffffff
)是硬編碼的,所以它不是可定製:
/** Updates the paint to draw the thumbnail. */
void updateThumbnailPaintFilter() {
if (mInvisible) {
return;
}
int mul = (int) ((1.0f - mDimAlpha) * mThumbnailAlpha * 255);
int add = (int) ((1.0f - mDimAlpha) * (1 - mThumbnailAlpha) * 255);
if (mBitmapShader != null) {
mLightingColorFilter.setColorMultiply(Color.argb(255, mul, mul, mul));
mLightingColorFilter.setColorAdd(Color.argb(0, add, add, add));
mDrawPaint.setColorFilter(mLightingColorFilter);
mDrawPaint.setColor(0xffffffff);
} else {
int grey = mul + add;
mDrawPaint.setColorFilter(null);
mDrawPaint.setColor(Color.argb(255, grey, grey, grey));
}
invalidate();
}