SearchView

布局:

XML布局：
    <android.support.v7.widget.SearchView
    android:id="@+id/search_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:imeOptions="actionSearch"
    app:iconifiedByDefault="false"
    app:goIcon="@android:drawable/ic_search_category_default"
    app:queryHint="@string/hint"
    app:searchHintIcon="@android:drawable/sym_call_missed"
    app:searchIcon="@android:drawable/sym_action_email" />

        iconifiedByDefault设置为false，默认展开
        goIcon点击搜索按钮
        queryHint搜索提示
        searchHintIcon提示图标
        searchIcon收缩的图标
    获取实例：
        mSearchView = (SearchView) findViewById(R.id.search_view);

联合toolbar
     <item
    android:id="@+id/search"
    android:icon="@android:drawable/ic_menu_search"
    android:title="menu搜索"
    app:actionViewClass="android.support.v7.widget.SearchView"
    app:showAsAction="collapseActionView|ifRoom" />
    获取实例
    MenuItem searchMenuItem = menu.findItem(R.id.search);
    //使用v7的时候,需要使用MenuItemCompat
    SearchView searchView =
            (SearchView) MenuItemCompat.getActionView(searchMenuItem)

常用功能：

mSearchView.setIconifiedByDefault(false);  //设置false,SearchView会一直处于展开状态
mSearchView.setIconified(false);  //设置为false，SearchView会展开，反之会缩成1个Icon
mSearchView.setQueryHint(getString(R.string.hint));  //设置提示文字
mSearchView.setSubmitButtonEnabled(true);

1、监听器

mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener())

2、获取实例

通过反射：

try {
        Field field = mSearchView.getClass().getDeclaredField("mSearchSrcTextView");
        field.setAccessible(true);
        //通过反射拿到SearchView里面的SearchAutoComplete组件，输入框里的文字
        mSearchSrcTextView = (SearchView.SearchAutoComplete) field.get(mSearchView);
        //同样的
                mSearchButton = (ImageView) findViewById(R.id.search_button);//
                mGoButton = (ImageView) findViewById(R.id.search_go_btn);
                mCloseButton = (ImageView) findViewById(R.id.search_close_btn);
                mVoiceButton = (ImageView) findViewById(R.id.search_voice_btn);
                mCollapsedIcon = (ImageView) findViewById(R.id.search_mag_icon);
                mSearchPlate = findViewById(R.id.search_plate);//下划线
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }

通过findViewById

    mSearchSrcTextView = (SearchView.SearchAutoComplete)
            mSearchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);

3、搜索实例

    int id_wight = searchView.getResources().getIdentifier("android:id/search_src_text", null, null);
    int id_v7 = R.id.search_src_text;
    AutoCompleteTextView completeText = (AutoCompleteTextView) searchView
            .findViewById(id_v7) ;
    completeText.setThreshold(0);//代表输入长度为0即显示提示列表，往后以此类推。
    completeText.setAdapter(new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,list));//数据源
    completeText.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            searchView.setQuery(testStrings[position],true);//ture表示提交该字符串，为false为不提交。
        }
    });

4、取消默认自动获取焦点

    设置父控件的属性
    android:focusable="true"
    android:focusableInTouchMode="true"

    //如果软键盘已经出现则关闭软键盘
    View view = getActivity().getWindow().peekDecorView();
    if (view != null) {
     InputMethodManager inputMethodManager = (InputMethodManager) getActivity()
              .getSystemService(Context.INPUT_METHOD_SERVICE);
     inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
              ｝