Android提高十八篇之自定义Menu(TabMenu)

 

http://blog.csdn.net/hellogv/archive/2011/01/28/6168439.aspx

要过年了，在这里先祝广大的技术宅兔年快乐！
       用过UCWEB-Android版的人都应该对其特殊的menu有印象，把menu做成Tab-Menu(支持分页的Menu)，可以容纳比Android传统的menu更丰富的内容(Android的menu超过6项则缩略在[更多]里)，本文参考网上的例子(作者:CoffeeCole,email:[email protected]),对例子进行简化以及封装，使其作为一个复合控件融入自己的framework。

先来看看本文程序运行的效果：

TabMenu本身就是一个PopupWindow，PopupWindow上面放了两个GridView,第一个GridView就是分页标签，位于PopupWindow的顶部，第二个GridView是菜单，位于PopupWindow的主体。为了实现PopupWindow的弹出/退出的动画效果，本文使用了以下代码：

在工程的res文件夹里添加anim子目录，再新建文件popup_enter.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="100%p" android:toYDelta="0" android:duration="1000" />
    <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="1000" />
</set>

 

新建文件popup_exit.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="0" android:toYDelta="100%p" android:duration="1000" />
    <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="1000" />
</set>

 

在工程的values文件夹里新建文件popup_animation.xml：

<?xml version="1.0" encoding="utf-8"?>  
<resources>     
    <style name="PopupAnimation" parent="android:Animation">
        <item name="android:windowEnterAnimation">@anim/popup_enter</item>  
        <item name="android:windowExitAnimation">@anim/popup_exit</item>   
    </style>  
</resources> 

 

main.xml的源码如下：

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <TextView android:id="@+id/TextView01" android:layout_height="wrap_content"
        android:layout_width="fill_parent" android:text="扩展Menu----hellogv"></TextView>
</LinearLayout>

 

TabMenu的封装类TabMenu.java的源码如下：

package com.testTabMenu;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;
public class TabMenu extends PopupWindow{
    private GridView gvBody, gvTitle;
    private LinearLayout mLayout;
    private MenuTitleAdapter titleAdapter;
    public TabMenu(Context context,OnItemClickListener titleClick,OnItemClickListener bodyClick,
            MenuTitleAdapter titleAdapter,int colorBgTabMenu,int aniTabMenu){
        super(context);

        mLayout = new LinearLayout(context);
        mLayout.setOrientation(LinearLayout.VERTICAL);
        //标题选项栏
        gvTitle = new GridView(context);
        gvTitle.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        gvTitle.setNumColumns(titleAdapter.getCount());
        gvTitle.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
        gvTitle.setVerticalSpacing(1);
        gvTitle.setHorizontalSpacing(1);
        gvTitle.setGravity(Gravity.CENTER);
        gvTitle.setOnItemClickListener(titleClick);
        gvTitle.setAdapter(titleAdapter);
        gvTitle.setSelector(new ColorDrawable(Color.TRANSPARENT));//选中的时候为透明色
        this.titleAdapter=titleAdapter;
        //子选项栏
        gvBody = new GridView(context);
        gvBody.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
        gvBody.setSelector(new ColorDrawable(Color.TRANSPARENT));//选中的时候为透明色
        gvBody.setNumColumns(4);
        gvBody.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
        gvBody.setVerticalSpacing(10);
        gvBody.setHorizontalSpacing(10);
        gvBody.setPadding(10, 10, 10, 10);
        gvBody.setGravity(Gravity.CENTER);
        gvBody.setOnItemClickListener(bodyClick);
        mLayout.addView(gvTitle);
        mLayout.addView(gvBody);

        //设置默认项
        this.setContentView(mLayout);
        this.setWidth(LayoutParams.FILL_PARENT);
        this.setHeight(LayoutParams.WRAP_CONTENT);
        this.setBackgroundDrawable(new ColorDrawable(colorBgTabMenu));// 设置TabMenu菜单背景
        this.setAnimationStyle(aniTabMenu);
        this.setFocusable(true);// menu菜单获得焦点 如果没有获得焦点menu菜单中的控件事件无法响应
    }


    public void SetTitleSelect(int index)
    {
        gvTitle.setSelection(index);
        this.titleAdapter.SetFocus(index);
    }

    public void SetBodySelect(int index,int colorSelBody)
    {
        int count=gvBody.getChildCount();
        for(int i=0;i<count;i++)
        {
            if(i!=index)
                ((LinearLayout)gvBody.getChildAt(i)).setBackgroundColor(Color.TRANSPARENT);
        }
        ((LinearLayout)gvBody.getChildAt(index)).setBackgroundColor(colorSelBody);
    }

    public void SetBodyAdapter(MenuBodyAdapter bodyAdapter)
    {
        gvBody.setAdapter(bodyAdapter);
    }

    /**
     * 自定义Adapter，TabMenu的每个分页的主体
     *
     */
    static public class MenuBodyAdapter extends BaseAdapter {
        private Context mContext;
        private int fontColor,fontSize;
        private String[] texts;
        private int[] resID;
        /**
         * 设置TabMenu的分页主体
         * @param context 调用方的上下文
         * @param texts 按钮集合的字符串数组
         * @param resID 按钮集合的图标资源数组
         * @param fontSize 按钮字体大小
         * @param color 按钮字体颜色
         */
        public MenuBodyAdapter(Context context, String[] texts,int[] resID, int fontSize,int fontColor)
        {
            this.mContext = context;
            this.fontColor = fontColor;
            this.texts = texts;
            this.fontSize=fontSize;
            this.resID=resID;
        }
        public int getCount() {
            return texts.length;
        }
        public Object getItem(int position) {

            return makeMenyBody(position);
        }
        public long getItemId(int position) {
            return position;
        }

        private LinearLayout makeMenyBody(int position)
        {
            LinearLayout result=new LinearLayout(this.mContext);
            result.setOrientation(LinearLayout.VERTICAL);
            result.setGravity(Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL);
            result.setPadding(10, 10, 10, 10);

            TextView text = new TextView(this.mContext);
            text.setText(texts[position]);
            text.setTextSize(fontSize);
            text.setTextColor(fontColor);
            text.setGravity(Gravity.CENTER);
            text.setPadding(5, 5, 5, 5);
            ImageView img=new ImageView(this.mContext);
            img.setBackgroundResource(resID[position]);
            result.addView(img,new LinearLayout.LayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT)));
            result.addView(text);
            return result;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            return makeMenyBody(position);
        }
    }


    /**
     * 自定义Adapter,TabMenu的分页标签部分
     *
     */
    static public class MenuTitleAdapter extends BaseAdapter {
        private Context mContext;
        private int fontColor,unselcolor,selcolor;
        private TextView[] title;
        /**
         * 设置TabMenu的title
         * @param context 调用方的上下文
         * @param titles 分页标签的字符串数组
         * @param fontSize 字体大小
         * @param fontcolor 字体颜色
         * @param unselcolor 未选中项的背景色
         * @param selcolor 选中项的背景色
         */
        public MenuTitleAdapter(Context context, String[] titles, int fontSize,
                int fontcolor,int unselcolor,int selcolor) {
            this.mContext = context;
            this.fontColor = fontcolor;
            this.unselcolor = unselcolor;
            this.selcolor=selcolor;
            this.title = new TextView[titles.length];
            for (int i = 0; i < titles.length; i++) {
                title[i] = new TextView(mContext);
                title[i].setText(titles[i]);
                title[i].setTextSize(fontSize);
                title[i].setTextColor(fontColor);
                title[i].setGravity(Gravity.CENTER);
                title[i].setPadding(10, 10, 10, 10);
            }
        }
        public int getCount() {
            return title.length;
        }
        public Object getItem(int position) {
            return title[position];
        }
        public long getItemId(int position) {
            return title[position].getId();
        }
        /**
         * 设置选中的效果
         */
        private void SetFocus(int index)
        {
            for(int i=0;i<title.length;i++)
            {
                if(i!=index)
                {
                    title[i].setBackgroundDrawable(new ColorDrawable(unselcolor));//设置没选中的颜色
                    title[i].setTextColor(fontColor);//设置没选中项的字体颜色
                }
            }
            title[index].setBackgroundColor(0x00);//设置选中项的颜色
            title[index].setTextColor(selcolor);//设置选中项的字体颜色
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            View v;
            if (convertView == null) {
                v = title[position];
            } else {
                v = convertView;
            }
            return v;
        }
    }
}

 

testTabMenu介绍了数据的定义以及TabMenu的使用，源码如下：

package com.testTabMenu;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;
public class testTabMenu extends Activity {
    TabMenu.MenuBodyAdapter []bodyAdapter=new TabMenu.MenuBodyAdapter[3];
    TabMenu.MenuTitleAdapter titleAdapter;
    TabMenu tabMenu;
    int selTitle=0;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //设置分页栏的标题
        titleAdapter = new TabMenu.MenuTitleAdapter(this, new String[] { "常用",
                "设置", "工具" }, 16, 0xFF222222,Color.LTGRAY,Color.WHITE);
        //定义每项分页栏的内容
        bodyAdapter[0]=new TabMenu.MenuBodyAdapter(this,new String[] { "常用1", "常用2", },
                 new int[] { R.drawable.menu_test,
                R.drawable.menu_bookmark},13, 0xFFFFFFFF);

        bodyAdapter[1]=new TabMenu.MenuBodyAdapter(this,new String[] { "设置1", "设置2",
                    "设置3"}, new int[] { R.drawable.menu_edit,
                    R.drawable.menu_delete, R.drawable.menu_fullscreen},13, 0xFFFFFFFF);

        bodyAdapter[2]=new TabMenu.MenuBodyAdapter(this,new String[] { "工具1", "工具2",
                    "工具3", "工具4" }, new int[] { R.drawable.menu_copy,
                    R.drawable.menu_cut, R.drawable.menu_normalmode,
                    R.drawable.menu_quit },13, 0xFFFFFFFF);


        tabMenu=new TabMenu(this,
                 new TitleClickEvent(),
                 new BodyClickEvent(),
                 titleAdapter,
                 0x55123456,//TabMenu的背景颜色
                 R.style.PopupAnimation);//出现与消失的动画

         tabMenu.update();
         tabMenu.SetTitleSelect(0);
         tabMenu.SetBodyAdapter(bodyAdapter[0]);
    }

    class TitleClickEvent implements OnItemClickListener{
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            selTitle=arg2;
            tabMenu.SetTitleSelect(arg2);
            tabMenu.SetBodyAdapter(bodyAdapter[arg2]);
        }
    }

    class BodyClickEvent implements OnItemClickListener{
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            tabMenu.SetBodySelect(arg2,Color.GRAY);
            String str="第"+String.valueOf(selTitle)+"栏/n/r"
            +"第"+String.valueOf(arg2)+"项";
            Toast.makeText(testTabMenu.this, str, 500).show();

        }

    }
    @Override
    /**
     * 创建MENU
     */
    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add("menu");// 必须创建一项
        return super.onCreateOptionsMenu(menu);
    }
    @Override
    /**
     * 拦截MENU
     */
    public boolean onMenuOpened(int featureId, Menu menu) {
        if (tabMenu != null) {
            if (tabMenu.isShowing())
                tabMenu.dismiss();
            else {
                tabMenu.showAtLocation(findViewById(R.id.LinearLayout01),
                        Gravity.BOTTOM, 0, 0);
            }
        }
        return false;// 返回为true 则显示系统menu
    }

}