从零开始学android<SlidingDrawer 隐式抽屉.三十三.>

SlidingDrawer是一种抽屉型的组件，当用户选择打开此抽屉之后，会得到一些可以使用的“程序集”，这样当一个界面要摆放多个组件的时候，使用此组件就可以很好的解决布局空间紧张的问题，SlidingDrawer类的定义如下所示：

ava.lang.Object

? android.view.View

? android.view.ViewGroup

? android.widget.SlidingDrawer

常用的方法

XML文件

<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/MyLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <SlidingDrawer
        android:id="@+id/slidingdrawer"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:content="@+id/content"
        android:handle="@+id/handle"
        android:orientation="vertical" >
    <ImageView
            android:id="@+id/handle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/close" />

        <LinearLayout
            android:id="@+id/content"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
            
        </LinearLayout>
    
    </SlidingDrawer>

</LinearLayout></span>

ＪＡＶＡ文件

<span style="font-size:18px;">package com.example.slidingdrawer;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SlidingDrawer;
import android.widget.SlidingDrawer.OnDrawerCloseListener;
import android.widget.SlidingDrawer.OnDrawerOpenListener;
import android.widget.SlidingDrawer.OnDrawerScrollListener;
import android.widget.Toast;

public class MainActivity extends Activity {
	private SlidingDrawer slidingDrawer;
	private ImageView handle;
	private String data[]={"保存数据","更新状态","个人心情","个人等级","更多信息","","more……"};／／ｌｉｓｔｖｉｅｗ数据
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		LinearLayout layout = (LinearLayout) super.findViewById(R.id.content);
		ListView listView=new ListView(this);
		listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1,data));//设置adapter
		layout.addView(listView);
		this.handle=(ImageView)this.findViewById(R.id.handle);
		this.slidingDrawer=(SlidingDrawer)this.findViewById(R.id.slidingdrawer);
		this.slidingDrawer.setOnDrawerCloseListener(new OnDrawerCloseListener() {

			@Override
			public void onDrawerClosed() {
				// TODO Auto-generated method stub
				Toast.makeText(MainActivity.this, "菜单关闭", 2).show();
				handle.setImageResource(R.drawable.close);
			}
		});
		this.slidingDrawer.setOnDrawerOpenListener(new OnDrawerOpenListener() {

			@Override
			public void onDrawerOpened() {
				// TODO Auto-generated method stub
				Toast.makeText(MainActivity.this, "菜单打开", 2).show();
				handle.setImageResource(R.drawable.open);
			}
		});
		this.slidingDrawer.setOnDrawerScrollListener(new OnDrawerScrollListener() {

			@Override
			public void onScrollStarted() {
				// TODO Auto-generated method stub
				Toast.makeText(MainActivity.this, "正在拖动", 2).show();
			}

			@Override
			public void onScrollEnded() {
				// TODO Auto-generated method stub

			}
		});
	}

}
</span>

我们使用SlidingDrawer和GridView结合来做一个隐式菜单的效果

将用到的图片导入

XML文件

<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/MyLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <SlidingDrawer
        android:id="@+id/slidingdrawer"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:content="@+id/content"
        android:handle="@+id/handle"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/handle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/close" />

        <LinearLayout
            android:id="@+id/content"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <GridView
                android:id="@+id/gridView"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:numColumns="4"//每行数据数
                android:stretchMode="columnWidth"
                android:verticalSpacing="70dp" >//行间距
            </GridView>
        </LinearLayout>
    </SlidingDrawer>

</LinearLayout></span>

JAVA文件

打开后

隐式抽屉组件在开发中较常用到，也将为简单，希望大家好好学习掌握

下节预报

PopupWindow弹出窗口