[移动开发]Android 搜索框的简单使用案例

1、搜索框外观：

创建menu->menu->sear Item:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@+id/app_bar_search"
        android:icon="@drawable/ic_search_black_24dp"
        android:title="Search"
        app:actionViewClass="android.widget.SearchView"
        app:showAsAction="always"></item>
    <item
        android:id="@+id/reload"
        android:title="重新加载" />
    <item
        android:id="@+id/item233"
        android:title="退出" />
</menu>

?注意这里需要找到showAsAction并选中always

2、活动里写入：

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.search_menu,menu);
        SearchView searchView=(SearchView) menu.findItem(R.id.app_bar_search).getActionView();
        searchView.setMaxWidth(500);
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                query=query.trim();
                lists2=new ArrayList<>();
                if(!query.equals("")){
                    for(int i=0;i<myData2.queryNum();i++){
                        if(myData2.queryName(i).contains(query) || myData2.queryPassword(i).contains(query)){
                            ListViewItemBean itemBean=new ListViewItemBean();
                            itemBean.text1=myData2.queryName(i);
                            itemBean.text2=myData2.queryPassword(i);
                            lists2.add(itemBean);
                        }
                    }
                    ListViewAadpter adpter=new ListViewAadpter(MainActivity8son1.this,R.layout.list_view_item,lists2);
                    listView.setAdapter(adpter);
                }
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                return false;
            }
        });
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()){
            case R.id.app_bar_search:
                break;
            case R.id.item233:
                startActivity(new Intent(MainActivity8son1.this, MainActivity8.class));
                break;
            case R.id.reload:
                ListViewAadpter adpter=new ListViewAadpter(MainActivity8son1.this,R.layout.list_view_item,lists);
                listView.setAdapter(adpter);
                break;
        }
        return super.onOptionsItemSelected(item);
    }

其中关键搜索部分的代码为：

        SearchView searchView=(SearchView) menu.findItem(R.id.app_bar_search).getActionView();//初始化搜索框
        searchView.setMaxWidth(500);//设置长度
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {//搜索框监听
            @Override
            public boolean onQueryTextSubmit(String query) {//回车键监听
                query=query.trim();
                lists2=new ArrayList<>();
                if(!query.equals("")){
                    for(int i=0;i<myData2.queryNum();i++){
                        if(myData2.queryName(i).contains(query) || myData2.queryPassword(i).contains(query)){
                            ListViewItemBean itemBean=new ListViewItemBean();
                            itemBean.text1=myData2.queryName(i);
                            itemBean.text2=myData2.queryPassword(i);
                            lists2.add(itemBean);
                        }
                    }
                    ListViewAadpter adpter=new ListViewAadpter(MainActivity8son1.this,R.layout.list_view_item,lists2);
                    listView.setAdapter(adpter);
                }
                return true;//false表示未处理完会往下传递，true表示处理完不会往下传递
            }

            @Override
            public boolean onQueryTextChange(String newText) {//实时监听
                return false;
            }
        });