如何更改过度滚动边缘的颜色和过度滚动发光或如何更改android release 5.0 lollipop的白色(默认颜色)?
答案 0 :(得分:53)
过度滚动发光颜色继承了整个应用中android:colorPrimary
设置的主要颜色值。但是如果您需要指定不同的值,只需使用android:colorEdgeEffect
。
<style name="MyAppTheme" parent="***">
<item name="android:colorEdgeEffect">@color/my_color</item>
</style>
答案 1 :(得分:24)
在LOLLIPOP
上,边缘光晕继承自colorPrimary
。创建视图后,只能通过反射更改边缘发光颜色。当您使用Palette
动态加载颜色时,此功能非常有用。
编辑:TL; DR:从这里下载全班: https://github.com/consp1racy/android-commons/blob/master/commons/src/main/java/net/xpece/android/widget/XpEdgeEffect.java
PROGUARD SETUP:如果您要在支持库的小部件上使用此功能,则需要保留字段名称。最快的方法是以下(虽然仍然浪费):
-keepclassmembers class * extends android.view.View {
<fields>;
}
-keepclassmembers class android.support.v4.widget.EdgeEffectCompat {
<fields>;
}
使用以下代码创建实用程序类:
private static final Class<?> CLASS_SCROLL_VIEW = ScrollView.class;
private static final Field SCROLL_VIEW_FIELD_EDGE_GLOW_TOP;
private static final Field SCROLL_VIEW_FIELD_EDGE_GLOW_BOTTOM;
private static final Class<?> CLASS_LIST_VIEW = AbsListView.class;
private static final Field LIST_VIEW_FIELD_EDGE_GLOW_TOP;
private static final Field LIST_VIEW_FIELD_EDGE_GLOW_BOTTOM;
static {
Field edgeGlowTop = null, edgeGlowBottom = null;
for (Field f : CLASS_SCROLL_VIEW.getDeclaredFields()) {
switch (f.getName()) {
case "mEdgeGlowTop":
f.setAccessible(true);
edgeGlowTop = f;
break;
case "mEdgeGlowBottom":
f.setAccessible(true);
edgeGlowBottom = f;
break;
}
}
SCROLL_VIEW_FIELD_EDGE_GLOW_TOP = edgeGlowTop;
SCROLL_VIEW_FIELD_EDGE_GLOW_BOTTOM = edgeGlowBottom;
for (Field f : CLASS_LIST_VIEW.getDeclaredFields()) {
switch (f.getName()) {
case "mEdgeGlowTop":
f.setAccessible(true);
edgeGlowTop = f;
break;
case "mEdgeGlowBottom":
f.setAccessible(true);
edgeGlowBottom = f;
break;
}
}
LIST_VIEW_FIELD_EDGE_GLOW_TOP = edgeGlowTop;
LIST_VIEW_FIELD_EDGE_GLOW_BOTTOM = edgeGlowBottom;
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static void setEdgeGlowColor(AbsListView listView, int color) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
try {
EdgeEffect ee;
ee = (EdgeEffect) LIST_VIEW_FIELD_EDGE_GLOW_TOP.get(listView);
ee.setColor(color);
ee = (EdgeEffect) LIST_VIEW_FIELD_EDGE_GLOW_BOTTOM.get(listView);
ee.setColor(color);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static void setEdgeGlowColor(ScrollView scrollView, int color) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
try {
EdgeEffect ee;
ee = (EdgeEffect) SCROLL_VIEW_FIELD_EDGE_GLOW_TOP.get(scrollView);
ee.setColor(color);
ee = (EdgeEffect) SCROLL_VIEW_FIELD_EDGE_GLOW_BOTTOM.get(scrollView);
ee.setColor(color);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
答案 2 :(得分:8)
如果您正在使用最新的RecyclerView实现,则以编程方式更改溢出颜色非常简单。使用以下代码(Kotlin实现):
recyclerView.edgeEffectFactory = object : RecyclerView.EdgeEffectFactory() {
override fun createEdgeEffect(view: RecyclerView, direction: Int): EdgeEffect {
return EdgeEffect(view.context).apply { setColor(color) }
}
}
请注意,这仅适用于API级别21(Lollipop)及更高版本。如果您在编译时知道该值,请使用Ahmed指出的colorEdgeEffect
。
答案 3 :(得分:1)
在棒棒糖之前,发光效果实际上是嵌入在操作系统资源中的Drawable,您可以在其上应用ColorFilter:
public static void changeOverScrollGlowColor(Resources res, int colorID ) {
try {
final int glowDrawableId = res.getIdentifier("overscroll_glow", "drawable", "android");
final Drawable overscrollGlow = res.getDrawable(glowDrawableId);
overscrollGlow.setColorFilter(res.getColor(colorID), android.graphics.PorterDuff.Mode.SRC_ATOP);
final int edgeDrawableId = res.getIdentifier("overscroll_edge", "drawable", "android");
final Drawable overscrollEdge = res.getDrawable(edgeDrawableId);
overscrollEdge.setColorFilter(res.getColor(colorID), android.graphics.PorterDuff.Mode.SRC_ATOP);
} catch (Exception ignored) {
}
}
在onCreate中调用一次就足够了。
changeOverScrollGlowColor(getResources(), R.color.colorPrimary);