Android实现左侧滑动菜单

效果图：

 

SlideActivity.java:

 

package com.demo.slide;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;

import com.demo.broadcast.R;

public class SlideActivity extends Activity
{

  private SlidingMenu mLeftMenu ; 
  
  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.slide_main);
    
    mLeftMenu = (SlidingMenu) findViewById(R.id.id_menu);
  }

  public void toggleMenu(View view)
  {
    mLeftMenu.toggle();
  }
}

 

SlidingMenu.java:

package com.demo.slide;

import android.content.Context;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;

public class SlidingMenu extends HorizontalScrollView
{
  private LinearLayout mWapper;
  private ViewGroup mMenu;
  private ViewGroup mContent;
  private int mScreenWidth;

  private int mMenuWidth;
  // dp
  private int mMenuRightPadding = 80;

  private boolean once;

  private boolean isOpen;

  /**
   * 未使用自定义属性时，调用
   * 
   * @param context
   * @param attrs
   */
  public SlidingMenu(Context context, AttributeSet attrs)
  {
    this(context, attrs, 0);
  }

  /**
   * 当使用了自定义属性时，会调用此构造方法
   * 
   * @param context
   * @param attrs
   * @param defStyle
   */
  public SlidingMenu(Context context, AttributeSet attrs, int defStyle)
  {
    super(context, attrs, defStyle);

    WindowManager wm = (WindowManager) context
        .getSystemService(Context.WINDOW_SERVICE);
    DisplayMetrics outMetrics = new DisplayMetrics();
    wm.getDefaultDisplay().getMetrics(outMetrics);
    mScreenWidth = outMetrics.widthPixels;
    mMenuRightPadding = (int) TypedValue.applyDimension(
        TypedValue.COMPLEX_UNIT_DIP, 50, context
        .getResources().getDisplayMetrics());
  }

  public SlidingMenu(Context context)
  {
    this(context, null);
  }

  /**
   * 设置子View的宽和高 设置自己的宽和高
   */
  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
  {
    if (!once)
    {
      mWapper = (LinearLayout) getChildAt(0);
      mMenu = (ViewGroup) mWapper.getChildAt(0);
      mContent = (ViewGroup) mWapper.getChildAt(1);
      
      mMenuWidth = mMenu.getLayoutParams().width = mScreenWidth
          - mMenuRightPadding;
      mContent.getLayoutParams().width = mScreenWidth;
      once = true;
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

  /**
   * 通过设置偏移量，将menu隐藏
   */
  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b)
  {
    super.onLayout(changed, l, t, r, b);
    if (changed)
    {
      this.scrollTo(mMenuWidth, 0);
    }
  }

  @Override
  public boolean onTouchEvent(MotionEvent ev)
  {
    int action = ev.getAction();
    switch (action)
    {
    case MotionEvent.ACTION_UP:
      // 隐藏在左边的宽度
      int scrollX = getScrollX();
      if (scrollX >= mMenuWidth / 2)
      {
        this.smoothScrollTo(mMenuWidth, 0);
        isOpen = false;
      } else
      {
        this.smoothScrollTo(0, 0);
        isOpen = true;
      }
      return true;
    }
    return super.onTouchEvent(ev);
  }

  /**
   * 打开菜单
   */
  public void openMenu()
  {
    if (isOpen)
      return;
    this.smoothScrollTo(0, 0);
    isOpen = true;
  }

  public void closeMenu()
  {
    if (!isOpen)
      return;
    this.smoothScrollTo(mMenuWidth, 0);
    isOpen = false;
  }

  /**
   * 切换菜单
   */
  public void toggle()
  {
    if (isOpen)
    {
      closeMenu();
    } else
    {
      openMenu();
    }
  }
}

 

 

 

slide_main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <com.demo.slide.SlidingMenu
        android:id="@+id/id_menu"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:orientation="horizontal" >

            <include layout="@layout/left_menu" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#ffffff" >

                <Button
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="toggleMenu"
                    android:text="切换" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_marginLeft="20dp"
                    android:text="我是主content"
                    android:textColor="#ff00ff"
                    android:textSize="20sp" />
            </LinearLayout>
        </LinearLayout>
    </com.demo.slide.SlidingMenu>

</RelativeLayout>

 

 

 

left_menu.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000000" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:orientation="vertical" >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:text="我是左侧Menu"
            android:textColor="#ffffff"
            android:textSize="20sp" />

    </LinearLayout>

</RelativeLayout>