如何动态添加多个horizo​​ntalScrollView

Question

我想动态地将多个horizo​​ntalscrollView添加到线性布局。为此，我使用id为mainList的linearLayout。和一个带有horizo​​ntalScrollLayout的xml，如下所示。它不工作。什么是写入方式。

mainListView = (LinearLayout) findViewById(R.id.mainList); 
hrscroll = (HorizontalScrollView) findViewById(R.id.hrscroll); 
// hrtxt=(TextView) findViewById(R.id.hrtxt); 
for(int i=0;i<categories.length;i++) { 
    mainListView.addView(hrscroll); 
} 

XML为horizo​​ntalScrollLayout

<?xml version="1.0" encoding="utf-8"?> 
<HorizontalScrollView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:id="@+id/hrscroll" 
    android:layout_height="wrap_content"> 
</HorizontalScrollView> 

Answer 1

添加HorizontalScrollView动态的LinearLayout

mainListView = (LinearLayout) findViewById(R.id.mainList); 
// Creating mHorizontalScrollView array for multiple Categories 
HorizontalScrollView[] mHorizontalScrollView = new HorizontalScrollView[categories.length]; 
for(int i = 0; i < categories.length; i++) { 
    mHorizontalScrollView[i] = new HorizontalScrollView(context); 
    mainListView.addView(mHorizontalScrollView[i]); 
} 

更新答：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/mainListView" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:padding="8dp" > 

    <HorizontalScrollView 
     android:id="@+id/categoryOne" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categoryTwo" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categoryThree" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categoryFour" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categoryFive" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categorySix" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <HorizontalScrollView 
     android:id="@+id/categorySeven" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

</LinearLayout> 

活动文件：

绑定XML浏览：

mainListView = (LinearLayout) findViewById(R.id.mainList); 
categoryOne = (HorizontalScrollView) findViewById(R.id.categoryOne); 
categoryTwo = (HorizontalScrollView) findViewById(R.id.categoryTwo); 
categoryThree = (HorizontalScrollView) findViewById(R.id.categoryThree); 
categoryFour = (HorizontalScrollView) findViewById(R.id.categoryFour); 
categoryFive = (HorizontalScrollView) findViewById(R.id.categoryFive); 
categorySix = (HorizontalScrollView) findViewById(R.id.categorySix); 
categorySeven = (HorizontalScrollView) findViewById(R.id.categorySeven);