Android ListView with Section Header
ListView is most power full Widget in android.I have mention it every time i post related to ListView.We have already learned how to create a ListView with BaseAdapter. Now in above case if you have following problem ---
Now i am going to explain with code now step by step
Step 1) Create one New project
Step 2) Create XML name item1.xml inside res/layout folder.
Step 3) Create XML name item2.xml inside res/layout folder
Step 4) Change your activity to List-activity.You can implement with a normal activity. For this you have to take main.xml with ListView. Paste this code inside your list-activity
- You want to make a song list with header to make user interface more interactive
- There may be many more cases in which we want to give our ListView more fancy way to interact with user
- Header XML
- Normal ListRow XML
- Main Activity with ListView
- Adapter class
Now i am going to explain with code now step by step
Step 1) Create one New project
Step 2) Create XML name item1.xml inside res/layout folder.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="wrap_content" android:layout_width="fill_parent"> <TextView android:id="@+id/text" android:layout_height="50dp" android:gravity="center_vertical" android:text="text" android:visibility="visible" android:layout_width="fill_parent" android:textColor="#FF000000" android:background="#FFFFFFFF" /> </LinearLayout>
Step 3) Create XML name item2.xml inside res/layout folder
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="wrap_content" android:layout_width="fill_parent"> <TextView android:id="@+id/textSeparator" android:layout_height="wrap_content" android:gravity="center" android:text="text" android:visibility="visible" android:layout_width="fill_parent" android:textColor="#FFFFFFFF" android:background="#000" /> </LinearLayout>
Step 4) Change your activity to List-activity.You can implement with a normal activity. For this you have to take main.xml with ListView. Paste this code inside your list-activity
package com.ahmad.list; import android.app.ListActivity; import android.content.Context; import android.os.Bundle; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; import java.util.ArrayList; import java.util.TreeSet; public class MultipleItemsList extends ListActivity implements OnTouchListener{ private MyCustomAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mAdapter = new MyCustomAdapter(); for (int i = 1; i < 50; i++) { mAdapter.addItem("Sameer Blog " + i); if (i % 4 == 0) { mAdapter.addSeparatorItem("Ahmad " + i); } } setListAdapter(mAdapter); } //Adapter Class private class MyCustomAdapter extends BaseAdapter { private static final int TYPE_ITEM = 0; private static final int TYPE_SEPARATOR = 1; private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1; private ArrayList<String> mData = new ArrayList<String>(); private LayoutInflater mInflater; private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>(); public MyCustomAdapter() { mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public void addItem(final String item) { mData.add(item); notifyDataSetChanged(); } public void addSeparatorItem(final String item) { mData.add(item); // save separator position mSeparatorsSet.add(mData.size() - 1); notifyDataSetChanged(); } @Override public int getItemViewType(int position) { return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM; } @Override public int getViewTypeCount() { return TYPE_MAX_COUNT; } public int getCount() { return mData.size(); } public String getItem(int position) { return mData.get(position); } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = null; int type = getItemViewType(position); System.out.println("getView " + position + " " + convertView + " type = " + type); if (convertView == null) { holder = new ViewHolder(); switch (type) { case TYPE_ITEM: convertView = mInflater.inflate(R.layout.item1, null); holder.textView = (TextView)convertView.findViewById(R.id.text); break; case TYPE_SEPARATOR: convertView = mInflater.inflate(R.layout.item2, null); holder.textView = (TextView)convertView.findViewById(R.id.textSeparator); break; } convertView.setTag(holder); } else { holder = (ViewHolder)convertView.getTag(); } holder.textView.setText(mData.get(position)); return convertView; } } public static class ViewHolder { public TextView textView; } public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub return false; } }
Screen Shot of output of this Program ---Feel free to comment for suggestion and issue
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