【Android UI】侧滑栏的使用

浏览数：20 / 时间：2015年06月11日

布局文件xml

side_bar_scollview.xml//显示view的容器

<?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">

    <HorizontalScrollView
        android:id="@+id/MyScrollView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <LinearLayout
            android:id="@+id/ll_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="horizontal" >
        </LinearLayout>
        
    </HorizontalScrollView>

</LinearLayout>

home.xml//显示的主页面

<?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" 
    android:background="@drawable/home_bg">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="主页" />

</LinearLayout>

menu.xml//显示的菜单页面

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:background="@drawable/menu_bg">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="菜单" />

</FrameLayout>

MainActivity.java//主活动

package com.example.side_bar_scrollview;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;


public class MainActivity extends Activity {

    private HorizontalScrollView scrollview;
    private LinearLayout view_layout;
    private int width;
    private int height;
    private View home_view;
    private View menu_view;
    private float rate=0.4f;
    
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //关联界面ID
        setContentView(R.layout.side_bar_scollview);
        //关联控件ID
        scrollview=(HorizontalScrollView) findViewById(R.id.MyScrollView);
        view_layout=(LinearLayout) findViewById(R.id.ll_layout);
        //监听布局
        MyLayoutListener();
        //隐藏滚动条
        scrollview.setHorizontalScrollBarEnabled(false);
    }

    /**
     * 监听布局的变化
     *  1.getViewTreeObserver --- view事件的观察者
     *   2.addOnGlobalLayoutListener
     * 当在一个视图树中全局布局发生改变或者视图树中的某个视图的可视状态发生改变时，
     * 所要调用的回调函数的接口类
     *
     */
        private void MyLayoutListener(){
        
        scrollview.getViewTreeObserver().addOnGlobalLayoutListener(
                new OnGlobalLayoutListener() {

            @Override
            public void onGlobalLayout() {
                // TODO Auto-generated method stub
                //移除之前已经注册的全局布局的回调函数
                view_layout.getViewTreeObserver()
                    .removeOnGlobalLayoutListener(this);
                //获取最后一次调用measure()测量得到的scrollview的宽和高
                height = scrollview.getMeasuredHeight();
                width = scrollview.getMeasuredWidth();
                //解析主页和菜单的布局
                home_view=getLayoutInflater().inflate(R.layout.home,
                        null);
                menu_view=getLayoutInflater().inflate(R.layout.menu,
                        null);
                //添加view到view_layout
                view_layout.addView(menu_view, (int)(width*rate), height);
                view_layout.addView(home_view, width, height);
                
            }
        });
        
    }

}