我怎么能由右至左填补RecyclerView与GridLayoutManager [英] How can I fill RecyclerView with GridLayoutManager from right to left

问题描述

我试图填补一些数据到 RecyclerView 与 GridLayoutManager ：

I'm trying to fill some data into a RecyclerView with GridLayoutManager:

GridLayoutManager layoutManager = new GridLayoutManager(this, 3, GridLayoutManager.VERTICAL, false);

这将从从左至右填充数据并入电网。第一个项目将投入左上角的地方，等等。

This will fill the data into the grid from left to right. The first item will be put into top-left place, etc.

但我正在开发专为一个RTL语言，所以我需要它的填写从右到左应用

But the app I'm developing is designed for an RTL language, so I need to make it fill from right to left.

我试图改变的最后一个参数真正。但它只是滚动的 RecyclerView 一路下滑。

I tried to change the last argument to true. But it just scrolled the RecyclerView all the way down.

另外设置的layoutDirection 属性为 RecyclerView 不工作（不考虑我的分API是16，这属性添加为API17 +）：

Also setting layoutDirection attribute for RecyclerView doesn't work (without considering that my min API is 16 and this attribute is added for API17+):

<android.support.v7.widget.RecyclerView
        android:id="@+id/grid"
        android:layoutDirection="rtl"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

我怎样才能创建一个使用向左填补电网的权利 RecyclerView

推荐答案

创建扩展GridLayoutMAnager类，并覆盖isLayoutRTL（）方法是这样的：

Create a class that extends GridLayoutMAnager ,and override the isLayoutRTL() method like this:

public class RtlGridLayoutManager extends GridLayoutManager {

    public RtlGridLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    public RtlGridLayoutManager(Context context, int spanCount) {
        super(context, spanCount);
    }

    public RtlGridLayoutManager(Context context, int spanCount, int orientation, boolean reverseLayout) {
        super(context, spanCount, orientation, reverseLayout);
    }

    @Override
    protected boolean isLayoutRTL(){
        return true;
    }
}

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