8.搜索

搜索

1.在res/xml/下创建searchable.xml文件

label 

hint

* 注意：值不能直接写字符串，必须指向一个资源ID，例如@string/search_sms

 

2.创建SearchActivity

在manifest文件中配置activity中的信息

<activity>

<intent-filter>

<action name />

</intent-filter>

<meta-data 

  name

  resource />

</activity>

 

3.为了能让整个应用都可以调出搜索框,在application节点中配置

<meta-data android:name="android.app.default_searchable"

                   android:value=".SearchableActivity" />

 

 

4.通过onSearchRequested()方法调出搜索框

 

5.在SearchableActivity中获取Intent,获取SearchManager.QUERY参数的值

进行搜索，搜索完之后获得Cursor,绑定数据

 

6.如果想要类似AutoCompleteTextView的效果需要自定义一个Provider,详细步骤如下:

step1: 自定义一个Provider实现SearchRecentSuggestionsProvider

step2: 在searchable.xml文件中加以下属性:

searchSuggestAuthoritysearchSuggestSelection

step3: 在自定义的Provider的无参构造函数中调用setupSuggestions

step4: 重写query方法,查询短信数据库.

step5: 对查询出来的Cursor游标定义系统认识的别名

其中列值对应的分别是:

BaseColumns._ID, 

SearchManager.SUGGEST_COLUMN_TEXT_1,

SearchManager.SUGGEST_COLUMN_TEXT_2,

SearchManager.SUGGEST_COLUMN_QUERY

 

最后return Cursor

SearchActivity 

1. public class SearchActivity extends ListActivity{
   	
   	private ListView listView;
   	
   	@Override
   	protected void onCreate(Bundle savedInstanceState) {
   		super.onCreate(savedInstanceState);
   		
   		listView = getListView();
   		
   		 // 通过intent 获得，在搜索框中输入的内容 ，系统固定格式
   	    Intent intent = getIntent();
   	    if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
   	      query = intent.getStringExtra(SearchManager.QUERY);
   	      
   	      System.out.println("query::"+query);
   	      
   	      adapter = new  SearchListAdapter(this, null);
   		   listView.setAdapter(adapter);
   	      
   	      doMySearch(query);
   	    }
   	    
   	}
   	private void doMySearch(String query) {
   		MyQueryHandler myQueryHandler = new MyQueryHandler(getContentResolver());
   		
   		myQueryHandler.startQuery(99, adapter, MyConstants.URI_SMS, projection, " body like '%"+query+"%'", null, "date desc");
   		
   	}
   	
   	private String[] projection={
   			"_id","address","body","date"
   			};
   	
   	private final int INDEX_ADDRESS=1;
   	private final int INDEX_BODY=2;
   	private final int INDEX_DATE=3;
   	
   	private SearchListAdapter adapter;
   	private String query;
   	
   	class SearchListAdapter extends CursorAdapter{
   		public SearchListAdapter(Context context, Cursor c) {
   			super(context, c);
   			
   		}
   		@Override
   		public View newView(Context context, Cursor cursor, ViewGroup parent) {
   			View view  = View.inflate(context, R.layout.list_item_search, null);
   			ViewHolder vh = new ViewHolder();
   			
   			vh.face = (ImageView) view.findViewById(R.id.iv_face_list_item);
   			vh.address = (TextView) view.findViewById(R.id.tv_address_list_item);
   			vh.body = (TextView) view.findViewById(R.id.tv_body_list_item);
   			vh.date = (TextView) view.findViewById(R.id.tv_date_list_item);
   			view.setTag(vh);
   			
   			return view;
   		}
   		@Override
   		public void bindView(View view, Context context, Cursor cursor) {
   			ViewHolder vh = (ViewHolder) view.getTag();
   			
   			vh.body.setText(cursor.getString(INDEX_BODY));
   			
   			String dateStr = DateFormat.getDateFormat(context).format(cursor.getLong(INDEX_DATE));
   			vh.date.setText(dateStr);
   			
   			String number = cursor.getString(INDEX_ADDRESS);
   			String name = Tools.findNameByNumber(context, number);
   			if(name == null){
   				vh.address.setText(number);
   			}else{
   				vh.address.setText(name);
   			}
   			
   			int id = Tools.findIDByNumber(context, number);
   			if(id==-1){
   				vh.face.setBackgroundResource(R.drawable.ic_unknow_contact_picture);
   			}else{
   				
   				Bitmap bitmap = Tools.getFaceById(context, ""+id);
   				if(bitmap == null){
   					vh.face.setBackgroundResource(R.drawable.ic_contact_picture);
   				}else{
   					vh.face.setBackgroundDrawable(new BitmapDrawable(bitmap));
   				}
   			}
   		}
   		
   	}
   	
   	class ViewHolder{
   		
   		public ImageView face;
   		public TextView address;
   		public TextView body;
   		public TextView date;
   		
   	}
   	
   }