Android实现左侧滑动菜单
作者：风云正
这篇文章主要为大家详细介绍了Android实现左侧滑动菜单，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了Android实现左侧滑动菜单的具体代码，供大家参考，具体内容如下
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>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。