Android-搜尋框SearchView
阿新 • • 發佈:2018-12-17
介紹:
SearchView時搜尋元件,可以讓使用者輸入文字,見他輸入匹配結果
效果:
基本的用法 我就不詳細描述了
這裡主要說一些我遇到的問題:
如下:
一、點選listView後 讓文字自動補全到searchView上:
首先需要設定adapter 然後這隻listView的點選事件:
private final String[] mStrings = {"我愛Java","安卓無敵","好好學習"}; final ArrayAdapter adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,mStrings); listView.setAdapter(adapter);
然後對listView新增 item的監聽事件:
listView.setOnItemClickListener(new ListView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Object string = adapter.getItem(position); searchView.setQuery(string.toString(),true); } });
二、刪除listView自帶過濾器的黑框:
在 onQueryTextChange
對adapter設定:adapter.getFilter().filter(newText.toString());
@Override public boolean onQueryTextChange(String newText) { //如果newText長度不為0 if (TextUtils.isEmpty(newText)){ listView.clearTextFilter(); }else{ listView.setFilterText(newText); //adapter.getFilter().filter(newText.toString());//替換成本句後消失黑框!!! } return true; }
下面給出效果圖的的完整實現方法:
public class MainActivity extends Activity {
private SearchView searchView;
private ListView listView;
//定義自動完成的列表
private final String[] mStrings = {"我愛Java","安卓無敵","好好學習"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.lv);
final ArrayAdapter adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,mStrings);
listView.setAdapter(adapter);
//為ListView啟動過濾
listView.setTextFilterEnabled(true);
searchView = (SearchView) findViewById(R.id.sv);
//設定SearchView自動縮小為圖示
searchView.setIconifiedByDefault(false);//設為true則搜尋欄 縮小成俄日一個圖示點選展開
//設定該SearchView顯示搜尋按鈕
searchView.setSubmitButtonEnabled(true);
//設定預設提示文字
searchView.setQueryHint("輸入您想查詢的內容");
//配置監聽器
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
//點選搜尋按鈕時觸發
@Override
public boolean onQueryTextSubmit(String query) {
//此處新增查詢開始後的具體時間和方法
Toast.makeText(MainActivity.this,"you choose:" + query,Toast.LENGTH_SHORT).show();
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
//如果newText長度不為0
if (TextUtils.isEmpty(newText)){
listView.clearTextFilter();
}else{
listView.setFilterText(newText);
// adapter.getFilter().filter(newText.toString());//替換成本句後消失黑框!!!
}
return true;
}
});
listView.setOnItemClickListener(new ListView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Object string = adapter.getItem(position);
searchView.setQuery(string.toString(),true);
}
});
}
}
最後給出佈局如下:
<?xml version="1.0" encoding="utf-8" ?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!--定義一個SearchView-->
<SearchView
android:id="@+id/sv"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<!--定義自動完成的ListView-->
<ListView
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
</LinearLayout>