在水平滚动视图滚动文本 [英] Scroll text in a horizontal scroll view

问题描述

我见过类似的问题，我的几个职位。然而，在这些帖子中提到的解决方案，也没有帮我解决这个问题。下面是这种情况。我有一个水平滚动视图一个TextView。这个想法尽快是作为文本（超过视图大小）被附加到TextView的，它必须被自动滚动结束。这里是布局片段。

I have seen a few posts similar to my issue. However, the solutions mentioned in those posts did not help me fix the problem. Here is the scenario. I have a TextView in a horizontal scroll view. The idea is as soon as a text (larger than the view) is appended to the TextView, it must be automatically scrolled to end. Here is the layout snippet.

<HorizontalScrollView
             android:id="@+id/horizontalScrollView1"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:layout_margin="5dp"
             android:background="@color/subTitleColor"
             android:fillViewport="true"
             android:scrollbars="none" >

            <TextView
                android:id="@+id/drillPath"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:gravity="bottom"
                android:text="this is a such a long text that scrolling is needed, scroll more"
                android:textAppearance="?android:attr/textAppearanceSmall"
                android:textColor="@color/textColorWhite" />

</HorizontalScrollView> 

当一个事件，我这样做。

Upon an event, I do the following.

textView.append("do auto scroll");

有效地，它应该滚动文本到最后。但它不是！这是什么，我缺少什么呢？

Effectively, it should scroll the text to the end. But it isn't! What is it I am lacking?

推荐答案

首先，你的滚动视图将永远不会滚动，因为它的内容视图（TextView的）是 FILL_PARENT 模式。它应该换了内容，以留出空间的文本，并比其母公司大。 （你的TextView宽度更改为：的android：layout_width =WRAP_CONTENT）

First of all, your scrollview will never scroll since its content view (the TextView) is in fill_parent mode. it should wrap its content in order to leave space for the text and be bigger than its parent. (change your textView width to : android:layout_width="wrap_content" )

那么，这里没有什么要求的滚动，我不认为它应该自动发生。

Then, there is nothing here to request the scroll, I don't think it should happen automatically.

添加像这样到滚动请求您的滚动视图的末尾：

Add something like this to request the scroll to the end of your scroll view :

   textView.append("do auto scroll");

    scrollView.post(new Runnable() {            
        @Override
        public void run() {
               scrollView.fullScroll(View.FOCUS_RIGHT);              
        }
    });

让我知道，当你已经试过了。

Let me know when you've tried it.

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