使用带有start和end的属性

你问Android对原生RTL（从右到左显示）资词不资词，当然是资词啦。4.2以后，Android支持原生RTL。

优点

构建更优雅的变换布局方向的用户界面，支持由右到左（RTL）的语言和阅读方向，比如阿拉伯语和希伯来语。

使用方法

manifest中添加android:supportsRtl=”true”声明应用支持RTL mirroring
使用start/end属性代替left/right属性

有这些：paddingStart、drawableStart、layout_marginStart、layout_alignStart、layout_alignParentStart等

如果兼容4.2以下还要同时加上left/right
要测试可以切换到阿拉伯语等语言或者在调试模式强制开启RTL

原理

/**
     * Returns the resolved layout direction for this view.
     *
     * @return {@link #LAYOUT_DIRECTION_RTL} if the layout direction is RTL or returns
     * {@link #LAYOUT_DIRECTION_LTR} if the layout direction is not RTL.
     *
     * For compatibility, this will return {@link #LAYOUT_DIRECTION_LTR} if API version
     * is lower than {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}.
     *
     * @attr ref android.R.styleable#View_layoutDirection
     */
    @ViewDebug.ExportedProperty(category = "layout", mapping = {
        @ViewDebug.IntToString(from = LAYOUT_DIRECTION_LTR, to = "RESOLVED_DIRECTION_LTR"),
        @ViewDebug.IntToString(from = LAYOUT_DIRECTION_RTL, to = "RESOLVED_DIRECTION_RTL")
    })
    @ResolvedLayoutDir
    public int getLayoutDirection() {
        final int targetSdkVersion = getContext().getApplicationInfo().targetSdkVersion;
        if (targetSdkVersion < JELLY_BEAN_MR1) {
            mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED;
            return LAYOUT_DIRECTION_RESOLVED_DEFAULT;
        }
        return ((mPrivateFlags2 & PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL) ==
                PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL) ? LAYOUT_DIRECTION_RTL : LAYOUT_DIRECTION_LTR;
    }

    /**
     * Indicates whether or not this view's layout is right-to-left. This is resolved from
     * layout attribute and/or the inherited value from the parent
     *
     * @return true if the layout is right-to-left.
     *
     * @hide
     */
    @ViewDebug.ExportedProperty(category = "layout")
    public boolean isLayoutRtl() {
        return (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
    }