android抽屉效果

<android.support.v4.widget.DrawerLayout这个布局第一个子元素是内容区 后边的是抽屉的区域 抽屉的layout_gravity属性是自己手写的编译器不会自动提示  属性 start left为布局放在左边  end right为布局放在右边 侧滑就可以出来 不用响应事件  当然也可以让其响应事件
打开抽屉的方法为 mDrawerLayout.openDrawer(Gravity.LEFT); 通过里边的参数来指定哪个抽屉划出

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".DrawerActivity" >

<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<!-- The main content view -->

<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<Button
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="open"
/>
</FrameLayout>

<!-- The navigation drawer -->

<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#111"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</android.support.v4.widget.DrawerLayout>

</RelativeLayout>

package com.example.hellodrawer;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.widget.DrawerLayout;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class DrawerActivity extends Activity
{
private DrawerLayout mDrawerLayout = null;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer);

mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

Button button = (Button) findViewById(R.id.btn);
button.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v)
{
// 按钮按下，将抽屉打开
mDrawerLayout.openDrawer(Gravity.LEFT);

}
});
}

}