界面效果安卓侧面滑动组件设计（二）
在写这篇文章之前，xxx已经写过了几篇关于改界面效果主题的文章,想要了解的朋友可以去翻一下之前的文章
后面已经实现了滑动界面的计划部份，但详细怎么运行起来还没有说明
下面先看一下效果
让界面真正的滑动起来，并且有这样的效果，需要对左边和右边都实行侦听
左边滑动时，悬浮关键字键不显示，而滑动右边时，显示悬浮关键字键，同时滑动列表快速滑动。
Friend.java
package com.example.test_intent;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Pattern;
import android.app.Activity;
import android.content.AsyncQueryHandler;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.PixelFormat;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.example.widget.MyLetterListView;
import com.example.widget.MyLetterListView.OnTouchingLetterChangedListener;
public class Friend extends Activity
{
private BaseAdapter adapter;
private ListView listview;
private TextView overlay;
private ImageView suspend_search;
private MyLetterListView letterListView;
private AsyncQueryHandler asyncQuery;
private static final String NAME = "name", NUMBER = "number", SORT_KEY = "sort_key";
private HashMap<String, Integer> alphaIndexer;
private String[] sections;
public List<ContentValues> list = new ArrayList<ContentValues>();
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.friend);
asyncQuery = new MyAsyncQueryHandler(getContentResolver());
listview = (ListView) findViewById(R.id.list_view);
letterListView = (MyLetterListView) findViewById(R.id.my_list_view);
letterListView.setOnTouchingLetterChangedListener(new LetterListViewListener());
alphaIndexer = new HashMap<String, Integer>();
new Handler();
new OverlayThread();
initOverlay();
initSuSearch();
if(list.size()>0){
}
listview.setOnScrollListener(new OnScrollListener()
{
@Override
public void onScrollStateChanged(AbsListView view, int scrollState)
{
suspend_search.setVisibility(View.VISIBLE);
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount)
{
suspend_search.setVisibility(View.GONE);
}
});
suspend_search.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
ComponentName friendcName=new ComponentName(Friend.this,"com.example.test_intent.FriendSearch");
Intent friend_viewIntent=new Intent();
friend_viewIntent.setComponent(friendcName);
startActivity(friend_viewIntent);
Toast.makeText(getApplicationContext(), R.string.search, Toast.LENGTH_LONG).show();
// TODO Auto-generated method stub
}
});
}
@SuppressWarnings("deprecation")
public void getContent()
{
Cursor cur = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
startManagingCursor(cur);
}
@Override
protected void onResume()
{
super.onResume();
Uri uri = Uri.parse("content://com.android.contacts/data/phones");
String[] projection = { "_id", "display_name", "data1", "sort_key" };
asyncQuery.startQuery(0, null, uri, projection, null, null,"sort_key COLLATE LOCALIZED asc");
}
private class MyAsyncQueryHandler extends AsyncQueryHandler
{
public MyAsyncQueryHandler(ContentResolver cr)
{
super(cr);
}
@Override
protected void onQueryComplete(int token, Object cookie, Cursor cursor)
{
cursor.moveToFirst();
Log.d("ccccc", cursor.getString(0)+" 000 "+cursor.getString(1)+" 000 "+cursor.getString(2)+" 000 "+cursor.getString(3));
while (cursor.moveToNext())
{
ContentValues cv = new ContentValues();
cv.put(NAME, cursor.getString(1));
cv.put(NUMBER, cursor.getString(2));
cv.put(SORT_KEY, cursor.getString(3));
list.add(cv);
}
if (list.size() > 0)
{
setAdapter(list);
}
}
}
private void setAdapter(List<ContentValues> list)
{
adapter = new ListAdapter(this, list);
listview.setAdapter(adapter);
}
private class ListAdapter extends BaseAdapter
{
private LayoutInflater inflater;
private List<ContentValues> list;
public ListAdapter(Context context, List<ContentValues> list)
{
this.inflater = LayoutInflater.from(context);
this.list = list;
alphaIndexer = new HashMap<String, Integer>();
sections = new String[list.size()];
for (int i = 0; i < list.size(); i++)
{
String currentStr = getAlpha(list.get(i).getAsString(SORT_KEY));
String previewStr = (i - 1) >= 0 ? getAlpha(list.get(i - 1).getAsString(SORT_KEY)) : " ";
if (!previewStr.equals(currentStr))
{
String name = getAlpha(list.get(i).getAsString(SORT_KEY));
alphaIndexer.put(name, i);
sections[i] = name;
}
}
}
@Override
public int getCount()
{
return list.size();
}
@Override
public Object getItem(int position)
{
return list.get(position);
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder;
if (convertView == null)
{
convertView = inflater.inflate(R.layout.list_item, null);
holder = new ViewHolder();
holder.alpha = (TextView) convertView.findViewById(R.id.alpha);
holder.name = (TextView) convertView.findViewById(R.id.name);
holder.number = (TextView) convertView.findViewById(R.id.number);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder) convertView.getTag();
}
ContentValues cv = list.get(position);
holder.name.setText(cv.getAsString(NAME));
holder.number.setText(cv.getAsString(NUMBER));
String currentStr = getAlpha(list.get(position).getAsString(SORT_KEY));
String previewStr = (position - 1) >= 0 ? getAlpha(list.get(position - 1).getAsString(SORT_KEY)) : " ";
if (!previewStr.equals(currentStr))
{
holder.alpha.setVisibility(View.VISIBLE);
holder.alpha.setText(currentStr);
}
else
{
holder.alpha.setVisibility(View.GONE);
}
return convertView;
}
private class ViewHolder
{
TextView alpha;
TextView name;
TextView number;
}
}
private void initSuSearch()//搜索
{
LayoutInflater inflater = LayoutInflater.from(this);
suspend_search = (ImageView) inflater.inflate(R.layout.suspend_search, null);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(80,80,170,-280,
WindowManager.LayoutParams.TYPE_APPLICATION,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
WindowManager windowManager = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
windowManager.addView(suspend_search, lp);
}
private void initOverlay()
{
LayoutInflater inflater = LayoutInflater.from(this);
overlay = (TextView) inflater.inflate(R.layout.overlay, null);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(120,120,100,0,
WindowManager.LayoutParams.TYPE_APPLICATION,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
PixelFormat.TRANSLUCENT);
WindowManager windowManager = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
windowManager.addView(overlay, lp);
}
private class LetterListViewListener implements OnTouchingLetterChangedListener
{
@Override
public void onTouchingLetterChanged(final String s,float y,float x)
{
if(alphaIndexer.get(s) != null)
{
int position = alphaIndexer.get(s);
listview.setSelection(position);
overlay.setText(sections[position]);
overlay.setVisibility(View.VISIBLE);
}
}
@Override
public void onTouchingLetterEnd()
{
overlay.setVisibility(View.GONE);
}
@Override
public void onMoveSuspendSearch()
{
suspend_search.setVisibility(View.GONE);
// TODO Auto-generated method stub
}
@Override
public void onShowSuspendSearch()
{
suspend_search.setVisibility(View.VISIBLE);
// TODO Auto-generated method stub
}
}
private class OverlayThread implements Runnable
{
@Override
public void run()
{
overlay.setVisibility(View.GONE);
}
}
private String getAlpha(String str)
{
if (str == null)
{
return "#";
}
if (str.trim().length() == 0)
{
return "#";
}
char c = str.trim().substring(0, 1).charAt(0);
Pattern pattern = Pattern.compile("^[A-Za-z]+$");
if (pattern.matcher(c + "").matches())
{
return (c + "").toUpperCase();
}
else
{
return "#";
}
}
}
滑动界面的计划部份应该来讲还是Android的UI部份比较简单的，多懂得多实际基本上就可以弄懂。
文章结束给大家分享下程序员的一些笑话语录：
这年头的互联网真是娱乐了中国，网民们从各种各样的“门”里钻来钻去，又有好多“哥”好多“帝”，值得大家品味不已……网络经典语录，关于IT与互联网，经典与您分享！
