问题如下：
方案：TI OMAP4430 Android4.0.4
分辨率：1920*1200
现在一直切换壁纸，壁纸会越来越慢，而且会会出现铺不满的情况，只有重启后才能恢复正常。
I/dalvikvm-heap( 280): Forcing collection of SoftReferences for 22118416-byte allocation
D/audio_hw_primary( 123): set_route_by_array(0x13f5c40, 0x40f8b2a8, 1)
D/dalvikvm( 280): GC_BEFORE_OOM freed 2K, 52% free 21412K/44487K, paused 21ms
E/dalvikvm-heap( 280): Out of memory on a 22118416-byte allocation.
I/dalvikvm( 280): "Thread-39" prio=5 tid=12 RUNNABLE
I/dalvikvm( 280): | group="main" sCount=0 dsCount=0 obj=0x41598608 self=0x1f61500
I/dalvikvm( 280): | sysTid=2563 nice=0 sched=0/0 cgrp=default handle=32993576
I/dalvikvm( 280): | schedstat=( 0 0 0 ) utm=21 stm=0 core=1
I/dalvikvm( 280): at android.graphics.Bitmap.nativeCreate(Native Method)
I/dalvikvm( 280): at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
I/dalvikvm( 280): at android.graphics.Bitmap.createBitmap(Bitmap.java:585)
I/dalvikvm( 280): at android.app.WallpaperManager.generateBitmap(WallpaperManager.java:871)
I/dalvikvm( 280): at android.app.WallpaperManager$Globals.getDefaultWallpaperLocked(WallpaperManager.java:361)
I/dalvikvm( 280): at android.app.WallpaperManager$Globals.peekWallpaperBitmap(WallpaperManager.java:250)
I/dalvikvm( 280): at android.app.WallpaperManager.getBitmap(WallpaperManager.java:551)
I/dalvikvm( 280): at com.android.systemui.ImageWallpaper$DrawableEngine.updateWallpaperLocked(ImageWallpaper.java:385)
I/dalvikvm( 280): at com.android.systemui.ImageWallpaper$DrawableEngine.drawFrameLockedThread(ImageWallpaper.java:344)
I/dalvikvm( 280): at com.android.systemui.ImageWallpaper$DrawableEngine$1.run(ImageWallpaper.java:374)
I/dalvikvm( 280): at java.lang.Thread.run(Thread.java:856)
I/dalvikvm( 280):
W/WallpaperManager( 280): Can't generate default bitmap
W/WallpaperManager( 280): java.lang.OutOfMemoryError
W/WallpaperManager( 280): at android.graphics.Bitmap.nativeCreate(Native Method)
W/WallpaperManager( 280): at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
W/WallpaperManager( 280): at android.graphics.Bitmap.createBitmap(Bitmap.java:585)
W/WallpaperManager( 280): at android.app.WallpaperManager.generateBitmap(WallpaperManager.java:871)
W/WallpaperManager( 280): at android.app.WallpaperManager$Globals.getDefaultWallpaperLocked(WallpaperManager.java:361)
W/WallpaperManager( 280): at android.app.WallpaperManager$Globals.peekWallpaperBitmap(WallpaperManager.java:250)
W/WallpaperManager( 280): at android.app.WallpaperManager.getBitmap(WallpaperManager.java:551)
W/WallpaperManager( 280): at com.android.systemui.ImageWallpaper$DrawableEngine.updateWallpaperLocked(ImageWallpaper.java:385)
W/WallpaperManager( 280): at com.android.systemui.ImageWallpaper$DrawableEngine.drawFrameLockedThread(ImageWallpaper.java:344)
W/WallpaperManager( 280): at com.android.systemui.ImageWallpaper$DrawableEngine$1.run(ImageWallpaper.java:374)
W/WallpaperManager( 280): at java.lang.Thread.run(Thread.java:856)
