滚动型的Andr​​oid使用的RelativeLayout [英] Android ScrollView with RelativeLayout

问题描述

我有两个RelativeLayout的，一个在另一个内的片段。这片段是一个选项卡中。我想，内部布局（layoutInternal）是滚动的，但有下列code不起作用。我创建视图对​​象插入到layoutInternal dinamically。哪里是我的错？

I have a fragment with two RelativeLayout, one inside the other. This fragment is inside a tab. I want that the internal layout(layoutInternal) is scrollable, but with the following code does not work. I create the view object into the layoutInternal dinamically. Where is my mistake?

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layoutExsternal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

     <ScrollView 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true" 
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginBottom="@dimen/fragmentHall_10dp_margin"
        android:layout_marginTop="@dimen/fragmentHall_10dp_margin">

        <RelativeLayout
            android:id="@+id/layoutInternal"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">

        </RelativeLayout>

    </ScrollView>   
</RelativeLayout>

以下code是我插入intenalLayout内的视图对象（表）。

The following code is where i insert the view object (table) inside the intenalLayout.

    while (iteratorTables.hasNext()) {
        [...] //Here i calculate the dimension and coordinates
        b_table = new ButtonTable(SelzApplication.getAppContext(),tableMap.getValue(), widthTable, heightTable);

        b_table.setX(Math.round((tableMap.getValue().getX())* Xratio));
        b_table.setY(Math.round((tableMap.getValue().getY())* Yratio));

        //add Touch Listeners to the button
        b_table.setOnLongClickListener(new OnLongTuchDragDrop());   
        b_table.setOnClickListener(new TableOnClick()); 


        layoutInternal.addView(b_table, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
    }

这是我的应用程序的屏幕截图。

This is the screenshot of my app.

推荐答案

的 RelativeLayout的layoutInternal 的高度最初设置为的android：layout_height = WRAP_CONTENT但由于是动态创建的内容其内容最初是空的;这个原因是不滚动的。

The RelativeLayout layoutInternal has the height initially set as android:layout_height="wrap_content" but its content is initially empty because the content is created dynamically; for this reason is not scrollable.

要解决这个问题，当你完成的表格绘制到 RelativeLayout的layoutInternal ，你必须如下动态设置它的高度：

To solve this, when you finish to draw the tables into RelativeLayout layoutInternal, you have to set its height dynamically as below:

    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) layoutInternal.getLayoutParams();
    params.height =  max_y_coordinate_used;
    layoutInternal.setLayoutParams(params);

这篇关于滚动型的Andr​​oid使用的RelativeLayout的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！