当前位置: 首页 > 工具软件 > ActionView > 使用案例 >

15 Action View 以及监听 的使用

艾宏远
2023-12-01
  • menu 代码

    <menu xmlns:android="http://schemas.android.com/apk/res/android" >
    
    
        <!-- 
          android:actionViewClass=""  添加View   如果是系统提供的控件(包名.类名)
            !!!!!showAsAction如果为never将失去效果!!!!!
            android:actionLayout="@layout/layout" 添加自定义的View  
         -->
        <item
            android:id="@+id/action_search"
            android:orderInCategory="100"
            android:showAsAction="always"
            android:actionViewClass="android.widget.SearchView"
            android:title="搜索"/>
        <item
            android:id="@+id/action_spinner"
            android:orderInCategory="100"
            android:showAsAction="collapseActionView"
            android:actionLayout="@layout/layout"
            android:title="spinner"/>
    
    </menu>
    
  • MainActivity XMl布局文件

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context=".MainActivity" >
    
        <TextView
            android:id="@+id/tv_show"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/hello_world" />
    
        <Button 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="openClick"
            android:text="展开"
            />
        <Button 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="closeClick"
            android:text="折叠"
            />
    
    </LinearLayout>
    
  • 一个自定义View(用于填充到menu中)

    <?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" >
    
        <Spinner
            android:id="@+id/spinner" 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />
    
    
    </LinearLayout>
    
  • MainActivity 代码:

    package com.qf.day15_actionbar_demo02;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.MenuItem.OnActionExpandListener;
    import android.view.View;
    import android.widget.ArrayAdapter;
    import android.widget.SearchView;
    import android.widget.SearchView.OnQueryTextListener;
    import android.widget.Spinner;
    import android.widget.TextView;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
    
        //SearchView searchView;
    
        private TextView tvSHow;
    
        private Menu menu;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tvSHow = (TextView) findViewById(R.id.tv_show);
        }
    
        //打开
        public void openClick(View v){
            MenuItem item = menu.findItem(R.id.action_spinner);
            if(!item.isActionViewExpanded()){//判断是否展开
                item.expandActionView();//展开
            }
    
    
        }   
        //关闭
        public void closeClick(View v){
            MenuItem item = menu.findItem(R.id.action_spinner);
            if(item.isActionViewExpanded()){//判断是否展开
                item.collapseActionView();//关闭
            }
        }   
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
    
            this.menu = menu;
            //找出菜单项 
            MenuItem item = menu.findItem(R.id.action_search);
    
            //从菜单项里找出View
            SearchView searchView = (SearchView) item.getActionView();
    
            //设置查找的监听
            searchView.setOnQueryTextListener(new OnQueryTextListener() {
    
                //点击搜索按钮时  执行此方法
                @Override
                public boolean onQueryTextSubmit(String query) {
                    // TODO Auto-generated method stub
                    Toast.makeText(MainActivity.this, "=onQueryTextSubmit="+query, 0).show();
                    return false;
                }
    
                //文本改变时 执行此方法
                @Override
                public boolean onQueryTextChange(String newText) {
                    // TODO Auto-generated method stub
                    Toast.makeText(MainActivity.this, "=onQueryTextChange="+newText, 0).show();
                    return false;
                }
            });
    
            //找出菜单项
            MenuItem spinnerItem = menu.findItem(R.id.action_spinner);
            //找出layout布局
            View view = spinnerItem.getActionView();
            //从布局中找控件
            Spinner spinner = (Spinner) view.findViewById(R.id.spinner);
    
            String[] items = {"c","c++","php","java","android"};
    
            ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,
                    android.R.layout.simple_list_item_1, items);
    
            spinner.setAdapter(adapter);
    
    
            //展开和折叠的监听
            spinnerItem.setOnActionExpandListener(new OnActionExpandListener() {
    
                @Override
                public boolean onMenuItemActionExpand(MenuItem item) {
                    // TODO Auto-generated method stub
    
                    tvSHow.setText("==onMenuItemActionExpand===展开====");
                    return true;//返回false  不会折叠
                }
    
                @Override
                public boolean onMenuItemActionCollapse(MenuItem item) {
                    // TODO Auto-generated method stub
    
                    tvSHow.setText("==onMenuItemActionCollapse===折叠的====");
                    return true;
                }
            });
    
            return true;
        }
    
    }
    
 类似资料: