android中达到类似于windows桌面背景的平铺的效果，定义一个bitmap对象，在xml中和代码中均可，设置其tileMode为repeat。在drawable文件夹下建立如下文件tilebg.xml：

<?xml version ="1.0" encoding ="utf-8" ?>

<bitmap xmlns:android ="http://schemas.android.com/apk/res/android"

   android:src ="@drawable/pattern"

   android:tileMode ="repeat" />

其中pattern为需要平铺的图片，tileMode 属性定义平铺方向。在需要的地方设置background="@drawable/tilebg"

Java代码：
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pic);

//bitmap = Bitmap.createBitmap(100, 20, Config.ARGB_8888);
BitmapDrawable drawable = new BitmapDrawable(bitmap);
drawable.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT );
drawable.setDither(true);
view.setBackgroundDrawable(drawable);

       2)第二种我们使用xml来轻松实现

Java代码：
< bitmap xmlns:android="http://schemas.android.com/apk/res/android" android:src="/blog_article/@drawable/img/index.html"
android:tileMode="repeat" />

      3)第三种自己画出来

Java代码：
public static Bitmap createRepeater(int width, Bitmap src){
int count = (width + src.getWidth() - 1) / src.getWidth();

Bitmap bitmap = Bitmap.createBitmap(width, src.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);

for(int idx = 0; idx < count; ++ idx){
canvas.drawBitmap(src, idx * src.getWidth(), 0, null);
}

return bitmap;

虽然xcode4.2已经带了自己的Master-Detail Application，但跟书上的都不一样

可书上还在用MainWindow.xib，这个已经不合适使用了。

新建一个空模板，然后新建UIViewController subclass，FirstLevelViewcontroller， 勾选 with xib

然后在代理类中，修改

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    /*
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
     */
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.rootViewController = [[[FirstLevelViewcontroller alloc] initWithNibName:@"FirstLevelViewcontroller" bundle:nil] autorelease];
    self.window.rootViewController = self.rootViewController;
    [self.window makeKeyAndVisible];
    return YES;
}

在FirstLevelViewcontroller的Object上，拖入

drawSelectorOnTop：