我正在开发一个android应用程序,我正在使用RecyclerView。我需要在RecyclerView中添加一个分隔符。
我试着加上-
recyclerView.addItemDecoration(new
DividerItemDecoration(getActivity(),
DividerItemDecoration.VERTICAL_LIST));
下面是我的XML代码-
<android.support.v7.widget.RecyclerView
android:id="@+id/drawerList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
/>
yqritc的RecyclerView-FlexibleDivider使它成为一个内衬。首先把这个添加到你的build.gradle:
compile 'com.yqritc:recyclerview-flexibledivider:1.4.0' // requires jcenter()
现在你可以在你设置recyclerView的适配器的地方配置和添加一个分配器:
recyclerView.setAdapter(myAdapter);
recyclerView.addItemDecoration(new HorizontalDividerItemDecoration.Builder(this).color(Color.RED).sizeResId(R.dimen.divider).marginResId(R.dimen.leftmargin, R.dimen.rightmargin).build());
好了,如果不需要改变你的分割线颜色,只需对分割线装饰应用alpha。
GridLayoutManager透明的示例:
DividerItemDecoration horizontalDividerItemDecoration = new DividerItemDecoration(WishListActivity.this,
DividerItemDecoration.HORIZONTAL);
horizontalDividerItemDecoration.getDrawable().setAlpha(50);
DividerItemDecoration verticalDividerItemDecoration = new DividerItemDecoration(WishListActivity.this,
DividerItemDecoration.VERTICAL);
verticalDividerItemDecoration.getDrawable().setAlpha(50);
my_recycler.addItemDecoration(horizontalDividerItemDecoration);
my_recycler.addItemDecoration(verticalDividerItemDecoration);
你仍然可以通过设置颜色来改变分割线的颜色
过滤到它。
GridLayoutManager设置tint的例子:
DividerItemDecoration horizontalDividerItemDecoration = new DividerItemDecoration(WishListActivity.this,
DividerItemDecoration.HORIZONTAL);
horizontalDividerItemDecoration.getDrawable().setTint(getResources().getColor(R.color.colorAccent));
DividerItemDecoration verticalDividerItemDecoration = new DividerItemDecoration(WishListActivity.this,
DividerItemDecoration.VERTICAL);
verticalDividerItemDecoration.getDrawable().setAlpha(50);
my_recycler.addItemDecoration(horizontalDividerItemDecoration);
my_recycler.addItemDecoration(verticalDividerItemDecoration);
此外,您还可以尝试设置颜色滤镜,
horizontalDividerItemDecoration.getDrawable().setColorFilter(colorFilter);
Bhuvanesh BS解决方案有效。Kotlin版本:
import android.graphics.Canvas
import android.graphics.drawable.Drawable
import androidx.recyclerview.widget.RecyclerView
class DividerItemDecorator(private val mDivider: Drawable?) : RecyclerView.ItemDecoration() {
override fun onDraw(
canvas: Canvas,
parent: RecyclerView,
state: RecyclerView.State
) {
val dividerLeft = parent.paddingLeft
val dividerRight = parent.width - parent.paddingRight
for (i in 0 until parent.childCount - 1) {
val child = parent.getChildAt(i)
val dividerTop =
child.bottom + (child.layoutParams as RecyclerView.LayoutParams).bottomMargin
val dividerBottom = dividerTop + mDivider!!.intrinsicHeight
mDivider.setBounds(dividerLeft, dividerTop, dividerRight, dividerBottom)
mDivider.draw(canvas)
}
}
}