Question

I’ve created a gallery, and now I want to change it in the code. The element of the gallery consists of two Textviews and i want to get the number of lines.

I tried:

TextView top = (TextView)findViewById(R.id.top);
top.getLineCount();

But the app crashed at top.getLineCount();Does anyone have an idea?

GetView of CustomAdapter

       public View getView(int position, View convertView, ViewGroup parent) {

       LayoutInflater iteminflater = LayoutInflater.from(mContext);
       View gallaryitem = iteminflater.inflate(R.layout.gallery_item, null);
       ImageView imgView= (ImageView ) gallaryitem .findViewById(R.id.item);
       imgView.setImageResource(mImageIds[position]);


       //TextView top = (TextView)convertView.findViewById(R.id.top);
       //top.getLineCount();





       return gallaryitem ;
   }

LayoutFile

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:padding="10px" >

   <ImageView
    android:id="@+id/item"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent" 
    android:src="@drawable/icon"
    android:gravity="center"
    android:background="#4E4E4E"/>


<TextView 
    android:id="@+id/bottom" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="moremore" 
    android:textSize="27sp"

    android:layout_marginTop="275dip"
    android:paddingTop="35dip"
    android:textColor="#eeeeee"
    android:background="#60000000"
    android:textStyle="bold"
    android:typeface="sans"/>

 <TextView 
    android:id="@+id/top" 
    android:layout_width="fill_parent" 
    android:text="testtesttesttesttesttesttest" 
    android:textSize="22sp"
    android:layout_marginTop="280dip"
    android:layout_marginLeft="10dip"
    android:layout_marginRight="10dip"
    android:textColor="#eeeeee"
    android:background="#60ff0000"
    android:textStyle="bold"
    android:typeface="sans" 
    android:layout_height="wrap_content"/>

</RelativeLayout>

Answer 1

You should make a custom adapter for modifying the children of your gallery.

class MyAdapter extends ArrayAdapter<E>{
        public MyAdapter(Context context, int textViewResourceId, E[] objects) {
            super(context, textViewResourceId, objects);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if( convertView== null ) convertView = getLayoutInflater().inflate(R.layout.your_layout, null);

            //Modify contents of your gallery here.. example:
            TextView top = (TextView)convertView.findViewById(R.id.top);
            top.getLineCount();

            return convertView;
        }
    }

Set it on your gallery the way you set a normal adapter:

myGallery.setAdapter(new MyAdapter(...));