Android对用五大布局对象,它们分别是FrameLayout(框架布局),LinearLayout (线性布局),AbsoluteLayout(绝对布局),RelativeLayout(相对布局),TableLayout(表格布局). 

FrameLayout:帧布局(组界面布局)

将所有的子元素放在整个界面的左上角，后面的子元素直接覆盖前面的子元素，所以用的比较少。


LinearLayout:线性布局

 线性布局是按照水平或垂直的顺序将子元素(可以是控件或布局)依次按照顺序排列，每一个元素都位于前面一个元素之后。线性布局分为两种：水平方向和垂直方向的布局。


RelativeLayout:相对于ID 布局对象

 RelativeLayout继承于android.widget.ViewGroup，其按照子元素之间的位置关系完成布局的，作为Android系统五大布局中最灵活也是最常用的一种布局方式，非常适合于一些比较复杂的界面设计。



TableLayout: 表格布局对象
<TableRow></TableRow>

每个TableLayout是由多个TableRow组成，一个TableRow就表示TableLayout中的每一行，这一行可以由多个子元素组成。实际上TableLayout和TableRow都是LineLayout线性布局的子类。


AbsoluteLayout: 绝对元素定位对象

   绝对布局中将所有的子元素通过设置android:layout_x 和 android:layout_y属性，将子元素的坐标位置固定下来，即坐标(android:layout_x, android:layout_y) ，layout_x用来表示横坐标，layout_y用来表示纵坐标。 屏幕左上角为坐标(0,0)，横向往右为正方，纵向往下为正方。


其他布局：

GridLayout：

在最新的Android 4.0 SDK中，新引入了GridLayout的布局样式，这个布局样式看上去可能有点象之前的TableLayout,但实际上还是有所不同的。GridLayout可以用来做一个象TableLayout这样的布局样式，但其性能及功能都要比tablelayout要好，比如GridLayout的布局中的单元格可以跨越多行，而tablelayout则不行，此外，其渲染速度也比tablelayout要快。


DrawerLayout:抽屉布局

抽屉导航 NavigationDrawer

没有android官方控件时，很多时候都是使用开源的SlidingMenu，一直没机会分析侧拉菜单的实现机理，本文将分析android.support.v4.widget.DrawerLayout的使用及实现。
 DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from the edge of the window.
 Drawer positioning and layout is controlled using the android:layout_gravity attribute on child views corresponding to which side of the view you want the drawer to emerge from: left or right. (Or start/end on platform versions that support layout direction.)
 To use a DrawerLayout, position your primary content view as the first child with a width and height of match_parent. Add drawers as child views after the main content view and set the layout_gravity appropriately. Drawers commonly use match_parent for height with a fixed width.
 DrawerLayout.DrawerListener can be used to monitor the state and motion of drawer views. Avoid performing expensive operations such as layout during animation as it can cause stuttering; try to perform expensive operations during the STATE_IDLE state. DrawerLayout.SimpleDrawerListener offers default/no-op implementations of each callback method.
 As per the Android Design guide, any drawers positioned to the left/start should always contain content for navigating around the application, whereas any drawers positioned to the right/end should always contain actions to take on the current content. This preserves the same navigation left, actions right structure present in the Action Bar and elsewhereNavigationDrawerFragment.NavigationDrawerCallbacks
onNavigationDrawerItemSelected(int){}
isDrawerOpen()NavigationDrawerFragment:(NavigationDrawerFragment) getFragmentManager().findFragmentById(R.id.navigation_drawer)
setUp()FragmentManager: getFragmentManager()
beginTransaction()ActionBar:getActionBar()
setNavigationMode()
setDisplayShowTitleEnabled()
setTitle()Fragment
setArguments(Bundle)
onCreateView(LayoutInflater,ViewGroup,Bundle)
onAttach(Activity)