Insert a view dynamically in a HorizontalScrollView in Android

Question

I'm developing an application for Android tablet 3.0 that has one activity that should be scrollable in the horizontal axis, like an e-book.

For that, I'm using a RelativeLayout inside a HorizontalScrollView on my layout. Here is the XML:

<?xml version="1.0" encoding="utf-8"?>

    <HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="800px"
    android:id="@+id/horizontalScroll"
    android:background="#C6D7D2" android:layout_height="600px">

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


</HorizontalScrollView>

This xml file is called main.xml.

What I'm doing in the java file is:

setContentView(R.layout.main);
parent = (ViewGroup) findViewById(R.id.container);
View v = createView(); // Thats working for sure.
parent.addView(v);

But it is not working, the view V doesn't show on the screen. But if i do

addContentView(v)

it adds the view v to the screen (the proof that my method works), but it isn't scrollable since it is outside the HorizontalScrollView. What am I doing wrong?

UPDATE: I tried with that and it also didn't work out:

setContentView(R.layout.main);
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ViewGroup parent = (ViewGroup) findViewById(R.id.container);
View v = new View(this);
v.setBackgroundColor(Color.BLUE);
parent.addView(v,params);

I don't get a blue background.

Answer 1

Change the width of Relativelayout to wrap_content.

Try using this method to add the view.

void addView (View child, ViewGroup.LayoutParams params)

EDIT:
Remove android:orientation="horizontal" from the HorizontalScrollView

Answer 2

HorizontalScrollView scrollView = (HorizontalScrollView) findViewById(R.id.scrollView1);

        LinearLayout topLinearLayout = new LinearLayout(this);
       // topLinearLayout.setLayoutParams(android.widget.LinearLayout.LayoutParams.FILL_PARENT,android.widget.LinearLayout.LayoutParams.FILL_PARENT);
        topLinearLayout.setOrientation(LinearLayout.HORIZONTAL); 

        for (int i = 0; i < 15; i++){



            final ImageView imageView = new ImageView (this);

            imageView.setTag(i);

            imageView.setImageResource(R.drawable.ic_launcher);

            topLinearLayout.addView(imageView);

            imageView.setOnClickListener(new OnClickListener()
            {

                @Override
                public void onClick(View v)
                {
                    // TODO Auto-generated method stub
                    Log.e("Tag",""+imageView.getTag());
                }
            });


        }

        scrollView.addView(topLinearLayout);


//      ImageView img=(ImageView)findViewById(R.id.imageView1);
//      final ImageLoader imageLoader = ImageLoader.getInstance();
//      
//      
//      
//      ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
//      .threadPoolSize(3)
//      .threadPriority(Thread.NORM_PRIORITY - 2)
//      .memoryCacheSize(1500000) // 1.5 Mb
//      .discCacheSize(50000000) // 50 Mb
//      .httpReadTimeout(10000) // 10 s
//      .denyCacheImageMultipleSizesInMemory()
//      .enableLogging() // Not necessary in common
//      .build();
//  // Initialize ImageLoader with configuration.
//  ImageLoader.getInstance().init(config);
//      
//      final DisplayImageOptions options = new DisplayImageOptions.Builder()
//      .showStubImage(R.drawable.ic_launcher)
//      .cacheInMemory()
//      .cacheOnDisc()
//      .build();
//      
//      imageLoader.displayImage("http://3.bp.blogspot.com/_Sd45ASngYHA/TVC78RORKoI/AAAAAAAAARk/y0GcNkTmb40/s1600/android+logo1.jpg",img,options);
//      
//      img.setOnClickListener(new OnClickListener()
//      {
//          
//          @Overridt
//          public void onClick(View v)
//          {
//              // TODO Auto-generated method stub
//              Dialog d =new Dialog(TestActivity.this);
//              d.setContentView(R.layout.dialog);
//          
//              d.setCancelable(true);
//              
//              ImageView d_img=(ImageView)d.findViewById(R.id.dialog_img);
////                d.setLayoutParams(L)
//              imageLoader.displayImage("http://3.bp.blogspot.com/_Sd45ASngYHA/TVC78RORKoI/AAAAAAAAARk/y0GcNkTmb40/s1600/android+logo1.jpg",d_img,options);
//              
//              d.show();
//              }
//      });

Answer 3

you add the view into the relativelayout not into the horizontalscrollview using parent

try with the horizontalscrollview object as you can done with the relativelayout

Answer 4

Try this code.

ImageView imageView = new ImageView(this);
    imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
    imageView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
                LayoutParams.WRAP_CONTENT));
    imageView.setBackgroundColor(Color.blue);


parent.addView(v,params);