Merge branch 'master' of https://github.com/onecoders/AndroidBook

Author: silicon ruby

AddItemActivity.java

@@ -0,0 +1,55 @@
+package com.example.dynamicallyadditem;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+
+public class AddItemActivity extends Activity {
+
+	private Button addItem;
+	private ListView listView;
+	private static int LENGTH = 10;
+	final List<String> listItems = new ArrayList<String>();
+	ArrayAdapter<String> adapter;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.main);
+
+		listView = (ListView) findViewById(R.id.showItems);//
+		addItem = (Button) findViewById(R.id.addItem);//
+
+		for (int i = 0; i < LENGTH; i++) {
+			listItems.add("Item #" + i);
+		}
+		adapter = new ArrayAdapter<String>(getBaseContext(),
+				android.R.layout.simple_list_item_1, listItems);
+		listView.setAdapter(adapter);
+
+		addItem.setOnClickListener(new OnClickListener() {
+
+			@Override
+			public void onClick(View v) {
+				listItems.add("Item #" + LENGTH++);
+				adapter.notifyDataSetChanged();// key code
+			}
+		});
+	}
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		// Inflate the menu; this adds items to the action bar if it is present.
+		getMenuInflater().inflate(R.menu.main, menu);
+		return true;
+	}
+
+}