what is the difference between getting data from network and from local file in android?
<p>The listview can scroll well when getting data from local file, but it cause error when changing get data from network.</p>

<pre><code>03-04 09:43:36.716: I/dalvikvm(23799): Wrote stack traces to '/data/anr/traces.txt'
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7936.5ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7926.6ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7917.2ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7907.6ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7898.0ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7888.4ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7878.8ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7868.9ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7859.5ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7849.8ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7840.2ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7830.6ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7821.1ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7811.4ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7801.7ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7792.1ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7782.7ms processing the last input event: MotionEvent(action=2, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: I/InputDispatcher(386): Window 'Window{42011a58 u0 com.srx.activity/com.srx.activity.HomeActivity}' spent 7774.2ms processing the last input event: MotionEvent(action=1, deviceId=6, source=0x00001002, displayId=0)
03-04 09:43:36.723: E/ActivityManager(386): ANR in com.srx.activity (com.srx.activity/.HomeActivity)
03-04 09:43:36.723: E/ActivityManager(386): Reason: keyDispatchingTimedOut
03-04 09:43:36.723: E/ActivityManager(386): Load: 0.58 / 0.9 / 1.1
03-04 09:43:36.723: E/ActivityManager(386): CPU usage from 8880ms to 0ms ago:
03-04 09:43:36.723: E/ActivityManager(386):   33% 13032/com.srx.activity: 33% user + 0.5% kernel / faults: 749 minor
03-04 09:43:36.723: E/ActivityManager(386):   3.2% 386/system_server: 2% user + 1.2% kernel / faults: 99 minor
03-04 09:43:36.723: E/ActivityManager(386):   3.1% 129/surfaceflinger: 0.6% user + 2.4% kernel
03-04 09:43:36.723: E/ActivityManager(386):   3.1% 23799/com.google.android.deskclock: 1.9% user + 1.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.5% 112/irq/206-mms_ts: 0% user + 1.5% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.1% 9509/kworker/0:1: 0% user + 1.1% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.6% 126/netd: 0.4% user + 0.2% kernel / faults: 12 minor
03-04 09:43:36.723: E/ActivityManager(386):   0.4% 122/vold: 0.1% user + 0.3% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.4% 462/com.android.systemui: 0.3% user + 0.1% kernel / faults: 1 minor
03-04 09:43:36.723: E/ActivityManager(386):   0.3% 12552/com.speedsoftware.rootexplorer: 0% user + 0.3% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.2% 100/ueventd: 0.2% user + 0% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.2% 11718/logcat: 0% user + 0.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.2% 12771/kworker/u:2: 0% user + 0.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.2% 22617/adbd: 0% user + 0.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.1% 22/kinteractiveup: 0% user + 0.1% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0% 97/dhd_dpc: 0% user + 0% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0% 585/com.android.phone: 0% user + 0% kernel / faults: 30 minor
03-04 09:43:36.723: E/ActivityManager(386):   0% 718/com.google.process.gapps: 0% user + 0% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0.1% 8126/kworker/1:1: 0% user + 0.1% kernel
03-04 09:43:36.723: E/ActivityManager(386):   0% 13152/kworker/u:3: 0% user + 0% kernel
03-04 09:43:36.723: E/ActivityManager(386): 24% TOTAL: 19% user + 5% kernel
03-04 09:43:36.723: E/ActivityManager(386): CPU usage from 1511ms to 2029ms later:
03-04 09:43:36.723: E/ActivityManager(386):   58% 13032/com.srx.activity: 57% user + 1.4% kernel / faults: 64 minor
03-04 09:43:36.723: E/ActivityManager(386):     58% 13032/om.srx.activity: 57% user + 1.4% kernel
03-04 09:43:36.723: E/ActivityManager(386):   3.7% 386/system_server: 1.8% user + 1.8% kernel / faults: 9 minor
03-04 09:43:36.723: E/ActivityManager(386):     5.6% 419/InputDispatcher: 1.8% user + 3.7% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.2% 126/netd: 0% user + 1.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.2% 129/surfaceflinger: 0% user + 1.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):     2.5% 147/SurfaceFlinger: 0% user + 2.5% kernel
03-04 09:43:36.723: E/ActivityManager(386):     1.2% 217/SurfaceFlinger: 0% user + 1.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):     1.2% 234/EventThread: 0% user + 1.2% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.3% 9509/kworker/0:1: 0% user + 1.3% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.4% 11602/kworker/u:0: 0% user + 1.4% kernel
03-04 09:43:36.723: E/ActivityManager(386):   1.4% 23799/com.google.android.deskclock: 0% user + 1.4% kernel
03-04 09:43:36.723: E/ActivityManager(386):     2.9% 23799/droid.deskclock: 1.4% user + 1.4% kernel
03-04 09:43:36.723: E/ActivityManager(386): 44% TOTAL: 35% user + 8.7% kernel
03-04 09:43:45.153: W/ActivityManager(386):   Force finishing activity com.srx.activity/.HomeActivity
03-04 09:43:45.200: I/ActivityManager(386): Killing ProcessRecord{4168c2e0 13032:com.srx.activity/u0a10124}: user's request
03-04 09:43:45.231: I/WindowState(386): WIN DEATH: Window{41fdc508 u0 com.srx.activity/com.***.activity.CenterActivity}
03-04 09:43:45.231: I/ActivityManager(386): Process com.***.activity (pid 13032) has died.
</code></pre>
