content: /*
   * Copyright 2013 Niek Haarman
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.example.listviewanimationdemo.itemmanipulation;
  
  import android.content.Context;
  import android.content.Intent;
  import android.os.Bundle;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.AdapterView;
  import android.widget.TextView;
  import android.widget.Toast;
  
  import com.example.listviewanimationdemo.R;
  import com.example.listviewanimationdemo.base.BaseListActivity;
  import com.nhaarman.listviewanimations.ArrayAdapter;
  import com.nhaarman.listviewanimations.itemmanipulation.AnimateAdditionAdapter;
  
  import java.util.ArrayList;
  
  public class AnimateAdditionActivity extends BaseListActivity implements
  		AdapterView.OnItemClickListener {
  
  	private int mAddedItemNumber;
  	private AnimateAdditionAdapter<String> mAnimateAdditionAdapter;
  
  	public static void actionToItemAddition(Context context) {
  		Intent intent = new Intent(context, AnimateAdditionActivity.class);
  		context.startActivity(intent);
  	}
  
  	@Override
  	protected void onCreate(final Bundle savedInstanceState) {
  		super.onCreate(savedInstanceState);
  		setTitle("增加item");
  		MyAdapter myAdapter = new MyAdapter(this, getStringItems());
  
  		mAnimateAdditionAdapter = new AnimateAdditionAdapter<String>(myAdapter);
  		mAnimateAdditionAdapter.setListView(getListView());
  
  		getListView().setAdapter(mAnimateAdditionAdapter);
  		getListView().setOnItemClickListener(this);
  
  		Toast.makeText(this, "点击某一项来增加一项", Toast.LENGTH_LONG).show();
  	}
  
  	private static ArrayList<String> getStringItems() {
  		ArrayList<String> items = new ArrayList<String>();
  		for (int i = 0; i < 1000; i++) {
  			items.add(">>>第 " + i + "行===");
  		}
  		return items;
  	}
  
  	@Override
  	public void onItemClick(final AdapterView<?> parent, final View view,
  			final int position, final long id) {
  		mAnimateAdditionAdapter.insert(position, "***新增加的item: "
  				+ mAddedItemNumber);
  		mAddedItemNumber++;
  	}
  
  	private static class MyAdapter extends ArrayAdapter<String> {
  
  		private final Context mContext;
  
  		public MyAdapter(final Context context, final ArrayList<String> items) {
  			super(items);
  			mContext = context;
  		}
  
  		@Override
  		public long getItemId(final int position) {
  			return getItem(position).hashCode();
  		}
  
  		@Override
  		public View getView(final int position, final View convertView,
  				final ViewGroup parent) {
  			TextView tv = (TextView) convertView;
  			if (tv == null) {
  				tv = (TextView) LayoutInflater.from(mContext).inflate(
  						R.layout.item_list_row, parent, false);
  			}
  			tv.setText(getItem(position));
  			return tv;
  		}
  	}
  }
  