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
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;
}
}