霍洛进度光晕效果 [英] Holo progressbar glow effect
问题描述
我用的帆布画我的自定义形状，我想添加发光效果上就像在Android的进度查看结束。我想看看Android的来源，但并没有发现这样的效果究竟如何实现的。
I'm using canvas to draw my custom shape, and I want to add glow effect on it's end like in Android Progressbar View. I tried to look at Android sources, but did not found how exactly such effect is achieved.
推荐答案
辉光效果是PNG图像的一部分，看到它的<一个href=\"https://github.com/android/platform_frameworks_base/blob/android-cts-4.2_r2/core/res/res/drawable-xhdpi/progress_primary_holo_light.9.png\"相对=nofollow>源文件。它用于（间接地经由<一href=\"https://github.com/android/platform_frameworks_base/blob/android-cts-4.2_r2/core/res/res/drawable/progress_horizontal_holo_light.xml\"相对=nofollow>绘/ progress_horizontal_holo_light ）为<值href=\"http://developer.android.com/reference/android/widget/ProgressBar.html#attr_android%3aprogressDrawable\"相对=nofollow>安卓。progressDrawable
The glow effect is part of the PNG image, see its source file. It is used (indirectly via drawable/progress_horizontal_holo_light) as value of android:progressDrawable.
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