android 弹出式对话框实现自定义菜单栏

小咪咪 2023-10-10 12:01 48阅读 0赞

第一步：创建菜单项实体类(Menu)

/**
     * 菜单栏选项类
     */
    public class Menu {
    
    	//标题
    	private String title;
    	
    	//Id（图片Id）
    	private int iconID;
    
    	public Menu(String title, int iconID) {
    		super();
    		this.title = title;
    		this.iconID = iconID;
    	}
    
    	public String getTitle() {
    		return title;
    	}
    
    	public void setTitle(String title) {
    		this.title = title;
    	}
    
    	public int getIconID() {
    		return iconID;
    	}
    
    	public void setIconID(int iconID) {
    		this.iconID = iconID;
    	}
    	
    	
    	
    }

第二步：创建弹出式窗口类（自定义菜单栏）---CustomMenu

package com.demo.custommenu;
    
    import java.util.List;
    
    import android.app.Activity;
    import android.graphics.drawable.Drawable;
    import android.view.KeyEvent;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.view.View.OnKeyListener;
    import android.widget.BaseAdapter;
    import android.widget.GridView;
    import android.widget.ImageView;
    import android.widget.PopupWindow;
    import android.widget.TextView;
    import android.widget.AdapterView.OnItemClickListener;
    import android.widget.LinearLayout.LayoutParams;
    
    
    /**
     * 自定义弹出窗口继承PopupWindow
     */
    public class CustomMenu extends PopupWindow {
        //封装GridView组件
    	private GridView gvMenu;
        //封装View 组件
    	private View view;
    	
        /**
         * @param activity
         * @param menus
         */
        public CustomMenu(Activity activity, List<com.demo.custommenu.Menu> menus) {  
            super(activity); 
            //View 样式文件R.layout.menu
            view = activity.getLayoutInflater().inflate(R.layout.menu, null);  
            //实例化GridView组件
            gvMenu = (GridView)view.findViewById(R.id.gv_menu);
            
            //相关参数设置
            this.setContentView(view);  
            this.setWidth(LayoutParams.FILL_PARENT);  
            this.setHeight(LayoutParams.WRAP_CONTENT);
            
            //图片获取
            Drawable drawable = activity.getResources().getDrawable(R.drawable.selector_focused_shape); 
            //相关特效设置
            this.setBackgroundDrawable(drawable);
            this.setAnimationStyle(R.style.PopupAnimation);  
            this.setFocusable(true);
            
            //设置相关OnKeyListener事件
            gvMenu.setOnKeyListener(new OnKeyListener() {
    			@Override
    			public boolean onKey(View v, int keyCode, KeyEvent event) {
    				if ((keyCode == KeyEvent.KEYCODE_MENU)&&(isShowing())) {  
    					dismiss();//关闭PopupWindow弹出窗口
    			        return true;  
    			    }  
    				return false;
    			}
    		});
            //自定义适配器--MenuAdapter
            adapter = new MenuAdapter(activity, menus);
            gvMenu.setAdapter(adapter);  
        }
        //GridView 为每个Item设置监听事件方法
        public void setMenuItemListener(OnItemClickListener menuClickListener) {
        	gvMenu.setOnItemClickListener(menuClickListener);  
        }
        
        
        
        private MenuAdapter adapter;
        
        public void dataUpdate() {
        	//数据设置进行相关的修改工作
        	adapter.notifyDataSetChanged();
        }
          
        /** 
         * 自定义适配器
         *  
         */  
        class MenuAdapter extends BaseAdapter {  
            
        	private List<Menu> menus;
        	
        	//自定义样式布局文件
        	private LayoutInflater layoutInflater;
        	
        	
        	
            /** 
             * ����TabMenu�ķ�ҳ���� 
             * @param context ���÷��������� 
             * @param texts ��ť���ϵ��ַ����� 
             * @param resID ��ť���ϵ�ͼ����Դ���� 
             * @param fontSize ��ť�����С 
             * @param color ��ť������ɫ 
             */  
            public MenuAdapter(Activity activity, List<Menu> menus) {  
                this.menus = menus;  
                layoutInflater = LayoutInflater.from(activity);
            }
            
            @Override
            public int getCount() {  
                return menus.size();  
            }  
            
            @Override
            public Object getItem(int position) {  
                return menus.get(position)  ;
            }  
            
            @Override
            public long getItemId(int position) {  
                return position;  
            }  
            
            @Override
            public View getView(int position, View convertView, ViewGroup parent) {  
                MenuHolder holder = null;
                if(convertView==null) {
                	convertView = layoutInflater.inflate(R.layout.item_menu, null);
                	
                	holder = new MenuHolder();
                	holder.ivIcon = (ImageView)convertView.findViewById(R.id.iv_menu_item_icon);
                	holder.tvTitle = (TextView)convertView.findViewById(R.id.tv_menu_item_title);
                	
                	convertView.setTag(holder);
                }
                else { 
        			holder = (MenuHolder)convertView.getTag(); 
        		}
                
                holder.ivIcon.setImageResource(menus.get(position).getIconID());
                holder.tvTitle.setText(menus.get(position).getTitle());
            	return convertView;
            }
            
            class MenuHolder {
            	
            	/**
            	 * 图片组件
            	 */
            	public ImageView ivIcon;
            	
            	/**
            	 * 文本组件
            	 */
            	public TextView tvTitle;
            }
        }  
    }

第三步:修改Activity样式文件------BasicActivity

package com.demo.custommenu;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import android.app.Activity;  
    import android.os.Bundle;  
    import android.view.Gravity;
    import android.view.Menu;  
    import android.widget.AdapterView.OnItemClickListener;  
    
    public class BaseActivity extends Activity {
        //自定义弹出式菜单栏
        private CustomMenu customMenu;
        
        //样式组件
        private int parentViewID; 
        
    
        private List<com.demo.custommenu.Menu> menus; 
        
        @Override  
        public void onCreate(Bundle savedInstanceState) {  
            super.onCreate(savedInstanceState);  
            
            menus = new ArrayList<com.demo.custommenu.Menu>();
    
            
            customMenu = new CustomMenu(this, menus);
               
            
        }
        
        /**
         * �