ContactListActivity.java

package com.sogouchat.ui;

import com.sogouchat.R;
import com.sogouchat.SogouChatApp;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class ContactListActivity extends Activity implements OnItemClickListener {

	private ContactListAdapter mAdapter;
	private ListView mListView;
	private SogouChatApp mApp;
	
	private ImageView mQuickSearchBar;
	private ImageView mQuickSearchThumb;
	private ImageView mQuickSearchIcon;
	private LinearLayout mQuickTip;
	private TextView mTipText;

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_contact_list);
		mListView = (ListView) findViewById(R.id.contact_list);
		mApp = (SogouChatApp) getApplication();
		mAdapter = new ContactListAdapter(this, mApp);
		mAdapter.setupList();
		mListView.setOnItemClickListener(this);
		mListView.setAdapter(mAdapter);
		
		setupAlphaView();
	}

	private void setupAlphaView() {
		// TODO Auto-generated method stub
		mQuickSearchBar = (ImageView) findViewById(R.id.quick_search_bar);
		mQuickSearchThumb = (ImageView) findViewById(R.id.quick_search_thumb);
		mQuickSearchIcon = (ImageView) findViewById(R.id.toast_image);
		mQuickTip = (LinearLayout) findViewById(R.id.toast_container);
		mTipText = (TextView) findViewById(R.id.toast_text);
		mQuickSearchBar.setClickable(true);
		mQuickSearchBar.setOnTouchListener(new View.OnTouchListener() {

			public boolean onTouch(View v, MotionEvent event) {
				// TODO Auto-generated method stub
				
				if (event.getAction() == MotionEvent.ACTION_DOWN
						|| event.getAction() == MotionEvent.ACTION_MOVE) {
					TranslateAnimation animation = new TranslateAnimation(0, 0,
							event.getY(), event.getY());
					animation.setFillAfter(false);
					animation.setDuration(1);
					animation.setFillBefore(false);
					mQuickSearchThumb.startAnimation(animation);
					int nTop = mQuickSearchBar.getTop();
					int nBottom = mQuickSearchBar.getBottom();
					float nBtw = (nBottom - nTop) / 30f;
					int nIndex = (int) ((event.getY() - nTop + nBtw / 2) / nBtw);
//					ViewGroup.LayoutParams para = mQuickSearchThumb.getLayoutParams();  
//			        para.height = 300;  
//			        para.width = 300;  
//			        mQuickSearchThumb.setLayoutParams(para);  
					
//					mQuickSearchThumb.setPadding( mQuickSearchThumb.getPaddingLeft(),  (int) (mQuickSearchThumb.getPaddingTop()+event.getY()),  
//							mQuickSearchThumb.getPaddingRight(),  mQuickSearchThumb.getPaddingBottom());
//					
//					mQuickSearchThumb.setVisibility(View.VISIBLE);
					mQuickTip.setVisibility(View.VISIBLE);
					nIndex--;
					String strText = "";

					if (0 < nIndex && nIndex < 27) {
						// a-z
						strText = String.valueOf((char) ('A'+ nIndex) );
						int alphaIndex1 = mAdapter.getAlphaIndex(nIndex);
						mListView.setSelection(alphaIndex1);
						mTipText.setText(strText);
						mQuickSearchIcon.setVisibility(View.GONE);
						mTipText.setVisibility(View.VISIBLE);
					} else if (nIndex == 0) {
						mListView.setSelection(0);
						mQuickSearchIcon.setVisibility(View.VISIBLE);
						mTipText.setVisibility(View.GONE);
						// search
					} else if (nIndex == 27) {
						// #
						strText = "#";
						int alphaIndex = mAdapter.getAlphaIndex(26);
						mListView.setSelection(alphaIndex);
						// strText += (""+event.getY());
						mTipText.setText(strText);
						mQuickSearchIcon.setVisibility(View.GONE);
						mTipText.setVisibility(View.VISIBLE);
					}
				}
				if (event.getAction() == MotionEvent.ACTION_CANCEL
						|| event.getAction() == MotionEvent.ACTION_UP) {
					mQuickSearchThumb.setVisibility(View.GONE);
					mQuickTip.setVisibility(View.GONE);
				}
				return false;
			}
		});
	}

	@Override
	public void onItemClick(AdapterView<?> parent, View view, int position,
			long id) {
		// TODO Auto-generated method stub
		Log.i("FragmentComplexList", "Item clicked: " + id);
		Intent intent = new Intent();
		intent.setClass(ContactListActivity.this, ChatListActivity.class);
		Bundle bundle = new Bundle();
		String tel = (String) mAdapter.getData().get(position).mTel;
		String name = (String) mAdapter.getData().get(position).mName;
		bundle.putString("tel", tel);
		bundle.putString("name", name);
		intent.putExtras(bundle);
		this.startActivity(intent);
	}

}