1

I wrote this code to fill listview with something that exist in cursor. But it doesn't work and application force closes, I don't know what should I do. Please help me.

public class current_cart extends Activity { DBAdapter db=new DBAdapter(this); protected void onCreate(Bundle savedInstanceState) { _Date=new Date(); // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.current_cart); Lbl_Show=(TextView)this.findViewById(R.id.Lbl_Show_Date); this.btn_Remove=(Button)this.findViewById(R.id.Btn_Remove); try { db.createDataBase(); } catch (IOException ioe) { throw new Error("Unable to create database"); } try { db.open(); }catch(SQLException sqle){ throw sqle; } Cursor answers = db.f2(); startManagingCursor(answers); ListView list=(ListView)findViewById(R.id.list); String[] from = new String[] {"Cart_ID"}; int[] to = new int[] {android.R.id.text1}; @SuppressWarnings("deprecation") SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, answers, from, to); list.setAdapter(cursorAdapter); list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // When clicked, show a toast with the TextView text // setToast("Answer: " + ((TextView) view).getText()); } }); } }

and in DBAdapter.java this function exist:

 public Cursor f2 () { Cursor c=null; c=db.rawQuery("SELECT Cart_ID",null); return c; }

this is my logcat

12-14 09:56:10.608: E/PhonePolicy(32): Could not preload class for phone policy: com.android.internal.policy.impl.PhoneWindow$ContextMenuCallback 12-14 09:56:38.747: E/BatteryService(74): usbOnlinePath not found 12-14 09:56:38.747: E/BatteryService(74): batteryVoltagePath not found 12-14 09:56:38.747: E/BatteryService(74): batteryTemperaturePath not found 12-14 09:56:38.837: E/SurfaceFlinger(74): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake 12-14 09:56:49.757: E/EventHub(74): could not get driver version for /dev/input/mouse0, Not a typewriter 12-14 09:56:49.757: E/EventHub(74): could not get driver version for /dev/input/mice, Not a typewriter 12-14 09:56:50.246: E/WifiService(74): Invoking mWifiStateMachine.setWifiEnabled 12-14 09:56:53.279: E/ThrottleService(74): Could not open GPS configuration file /etc/gps.conf 12-14 09:56:53.356: E/NetworkTimeUpdateService(74): Could not open GPS configuration file /etc/gps.conf 12-14 09:56:53.377: E/NetworkTimeUpdateService(74): NTP server address not found, not syncing to NTP time 12-14 09:56:53.987: E/logwrapper(145): executing /system/bin/tc failed: No such file or directory 12-14 09:56:54.096: E/logwrapper(146): executing /system/bin/tc failed: No such file or directory 12-14 09:56:54.237: E/logwrapper(147): executing /system/bin/tc failed: No such file or directory 12-14 09:57:07.460: E/SoundPool(74): error loading /system/media/audio/ui/Effect_Tick.ogg 12-14 09:57:07.467: E/SoundPool(74): error loading /system/media/audio/ui/Effect_Tick.ogg 12-14 09:57:07.467: E/SoundPool(74): error loading /system/media/audio/ui/Effect_Tick.ogg 12-14 09:57:07.606: E/SoundPool(74): error loading /system/media/audio/ui/Effect_Tick.ogg 12-14 09:57:07.646: E/SoundPool(74): error loading /system/media/audio/ui/Effect_Tick.ogg 12-14 09:57:07.707: E/SoundPool(74): error loading /system/media/audio/ui/KeypressStandard.ogg 12-14 09:57:07.707: E/SoundPool(74): error loading /system/media/audio/ui/KeypressSpacebar.ogg 12-14 09:57:07.737: E/SoundPool(74): error loading /system/media/audio/ui/KeypressDelete.ogg 12-14 09:57:07.737: E/SoundPool(74): error loading /system/media/audio/ui/KeypressReturn.ogg 12-14 09:57:28.825: E/ActivityManager(74): Load: 6.15 / 1.57 / 0.53 12-14 09:57:28.825: E/ActivityManager(74): CPU usage from 467ms to -11573ms ago: 12-14 09:57:28.825: E/ActivityManager(74): 47% 74/system_server: 31% user + 16% kernel / faults: 5283 minor 2 major 12-14 09:57:28.825: E/ActivityManager(74): 10% 85/bootanimation: 8.8% user + 1.8% kernel 12-14 09:57:28.825: E/ActivityManager(74): 8.5% 200/zygote: 7.3% user + 1.1% kernel / faults: 891 minor 12-14 09:57:28.825: E/ActivityManager(74): 6.7% 124/com.android.systemui: 6.1% user + 0.5% kernel / faults: 519 minor 3 major 12-14 09:57:28.825: E/ActivityManager(74): 5.6% 151/com.android.launcher: 4.8% user + 0.8% kernel / faults: 995 minor 5 major 12-14 09:57:28.825: E/ActivityManager(74): 4.7% 139/zygote: 2.8% user + 1.9% kernel / faults: 425 minor 12-14 09:57:28.825: E/ActivityManager(74): 2.3% 218/app_process: 1.9% user + 0.3% kernel / faults: 269 minor 1 major 12-14 09:57:28.825: E/ActivityManager(74): 1.5% 26/mmcqd: 0% user + 1.5% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.2% 41/adbd: 0% user + 1.1% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.2% 32/zygote: 0% user + 0.2% kernel / faults: 32 minor 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 162/android.process.media: 0.3% user + 0% kernel / faults: 30 minor 12-14 09:57:28.825: E/ActivityManager(74): 0.2% 39/rild: 0.1% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.2% 211/fsck_msdos: 0% user + 0.2% kernel / faults: 320 minor 12-14 09:57:28.825: E/ActivityManager(74): 0% 28/servicemanager: 0% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.1% 133/jp.co.omronsoft.openwnn: 0.1% user + 0% kernel / faults: 4 minor 12-14 09:57:28.825: E/ActivityManager(74): 0% 1//init: 0% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0% 69/logcat: 0% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): +0% 228/com.android.defcontainer: 0% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): +0% 234/com.android.mms: 0% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 100% TOTAL: 68% user + 30% kernel + 0.7% irq + 0.1% softirq 12-14 09:57:28.825: E/ActivityManager(74): CPU usage from 7931ms to 10113ms later: 12-14 09:57:28.825: E/ActivityManager(74): 39% 74/system_server: 20% user + 18% kernel / faults: 965 minor 12-14 09:57:28.825: E/ActivityManager(74): 8.3% 88/ActivityManager: 3.2% user + 5.1% kernel 12-14 09:57:28.825: E/ActivityManager(74): 6% 250/Binder Thread #: 0.9% user + 5.1% kernel 12-14 09:57:28.825: E/ActivityManager(74): 5.1% 82/SurfaceFlinger: 3.7% user + 1.3% kernel 12-14 09:57:28.825: E/ActivityManager(74): 4.1% 103/WindowManagerPo: 4.1% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.3% 191/Binder Thread #: 1.3% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.3% 219/Binder Thread #: 0.9% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.9% 80/Binder Thread #: 0.4% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.9% 173/Binder Thread #: 0% user + 0.9% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.9% 249/Binder Thread #: 0.9% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 74/system_server: 0% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 79/Compiler: 0.4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 81/Binder Thread #: 0% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 87/er.ServerThread: 0% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 93/PackageManager: 0.4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 225/Binder Thread #: 0% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 251/Binder Thread #: 0.4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 11% 85/bootanimation: 8.5% user + 2.6% kernel 12-14 09:57:28.825: E/ActivityManager(74): 9.6% 91/BootAnimation: 7.4% user + 2.1% kernel 12-14 09:57:28.825: E/ActivityManager(74): 12% 200/android.process.acore: 11% user + 0.6% kernel / faults: 40 minor 12-14 09:57:28.825: E/ActivityManager(74): 9.1% 215/Binder Thread #: 7.9% user + 1.2% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.2% 200/d.process.acore: 1.2% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.6% 206/Compiler: 0.6% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 10% 124/com.android.systemui: 10% user + 0% kernel / faults: 72 minor 12-14 09:57:28.825: E/ActivityManager(74): 8.8% 124/ndroid.systemui: 8.8% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.5% 130/Compiler: 0% user + 0.5% kernel 12-14 09:57:28.825: E/ActivityManager(74): 10% 151/com.android.launcher: 10% user + 0% kernel / faults: 107 minor 1 major 12-14 09:57:28.825: E/ActivityManager(74): 9.4% 151/ndroid.launcher: 9.4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.1% 154/HeapWorker: 1.1% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 9.3% 139/com.android.phone: 7.5% user + 1.7% kernel / faults: 51 minor 12-14 09:57:28.825: E/ActivityManager(74): 8.7% 139/m.android.phone: 6.9% user + 1.7% kernel 12-14 09:57:28.825: E/ActivityManager(74): 4% 184/RILReceiver: 4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1.1% 183/RILSender: 0.5% user + 0.5% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.5% 150/Compiler: 0% user + 0.5% kernel 12-14 09:57:28.825: E/ActivityManager(74): 7% 234/com.android.mms: 3.2% user + 3.8% kernel / faults: 430 minor 6 major 12-14 09:57:28.825: E/ActivityManager(74): 8.9% 234/com.android.mms: 4.4% user + 4.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.6% 243/Compiler: 0% user + 0.6% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.5% 39/rild: 0.3% user + 0.1% kernel 12-14 09:57:28.825: E/ActivityManager(74): 1% 58/rild: 0.7% user + 0.3% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.3% 60/rild: 0.3% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.9% 41/adbd: 0.4% user + 0.4% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.4% 41/adbd: 0.4% user + 0% kernel 12-14 09:57:28.825: E/ActivityManager(74): 0.6% 228/com.android.defcontainer: 0% user + 0.6% kernel / faults: 30 minor 12-14 09:57:28.825: E/ActivityManager(74): 0.6% 245/Binder Thread #: 0% user + 0.6% kernel 12-14 09:57:28.825: E/ActivityManager(74): 100% TOTAL: 72% user + 27% kernel 12-14 09:57:29.859: E/InputDispatcher(74): channel '409e7970 NotificationPanel (server)' ~ Consumer closed input channel or an error occurred. events=0x8 12-14 09:57:29.865: E/InputDispatcher(74): channel '409e7970 NotificationPanel (server)' ~ Channel is unrecoverably broken and will be disposed! 12-14 09:57:30.035: E/InputDispatcher(74): Received spurious receive callback for unknown input channel. fd=170, events=0x8 12-14 09:57:30.035: E/InputDispatcher(74): Received spurious receive callback for unknown input channel. fd=174, events=0x8 12-14 09:57:30.035: E/InputDispatcher(74): Received spurious receive callback for unknown input channel. fd=188, events=0x8 12-14 09:57:38.786: E/TelephonyManager(74): Hidden constructor called more than once per process! 12-14 09:57:38.786: E/TelephonyManager(74): Original: android, new: android 12-14 09:57:39.474: E/ActivityManager(74): Start proc com.android.email for broadcast com.android.email/.service.EmailBroadcastReceiver: pid=302 uid=10013 gids={3003, 1015}Load: 8.44 / 2.21 / 0.75 12-14 09:57:39.474: E/ActivityManager(74): CPU usage from 2651ms to -8566ms ago: 12-14 09:57:39.474: E/ActivityManager(74): 41% 74/system_server: 28% user + 13% kernel / faults: 2614 minor 12-14 09:57:39.474: E/ActivityManager(74): 13% 151/com.android.launcher: 12% user + 1.6% kernel / faults: 772 minor 4 major 12-14 09:57:39.474: E/ActivityManager(74): 10% 139/zygote: 9.2% user + 1.5% kernel / faults: 542 minor 12-14 09:57:39.474: E/ActivityManager(74): 10% 85/bootanimation: 9.1% user + 1.2% kernel 12-14 09:57:39.474: E/ActivityManager(74): 4.6% 32/zygote: 3.5% user + 1% kernel / faults: 258 minor 12-14 09:57:39.474: E/ActivityManager(74): 2.5% 234/com.android.mms: 1.6% user + 0.9% kernel / faults: 561 minor 2 major 12-14 09:57:39.474: E/ActivityManager(74): 1.7% 200/zygote: 1.4% user + 0.3% kernel / faults: 94 minor 12-14 09:57:39.474: E/ActivityManager(74): 1.6% 41/adbd: 0.1% user + 1.4% kernel / faults: 1 minor 12-14 09:57:39.474: E/ActivityManager(74): 0.3% 69/logcat: 0% user + 0.2% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.1% 211/fsck_msdos: 0.1% user + 0% kernel / faults: 106 minor 12-14 09:57:39.474: E/ActivityManager(74): 0% 1//init: 0% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0% 4/events/0: 0% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): +0% 272/com.android.systemui: 0% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): +0% 287/com.android.deskclock: 0% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): +0% 302/zygote: 0% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 100% TOTAL: 73% user + 26% kernel + 0.5% irq + 0.2% softirq 12-14 09:57:39.474: E/ActivityManager(74): CPU usage from 7161ms to 8260ms later: 12-14 09:57:39.474: E/ActivityManager(74): 62% 74/system_server: 49% user + 13% kernel / faults: 94 minor 12-14 09:57:39.474: E/ActivityManager(74): 17% 102/WindowManager: 17% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 16% 88/ActivityManager: 8.4% user + 7.5% kernel 12-14 09:57:39.474: E/ActivityManager(74): 5.6% 82/SurfaceFlinger: 4.7% user + 0.9% kernel 12-14 09:57:39.474: E/ActivityManager(74): 4.7% 107/ConnectivitySer: 1.8% user + 2.8% kernel 12-14 09:57:39.474: E/ActivityManager(74): 3.7% 75/HeapWorker: 1.8% user + 1.8% kernel 12-14 09:57:39.474: E/ActivityManager(74): 3.7% 103/WindowManagerPo: 3.7% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 1.8% 79/Compiler: 0.9% user + 0.9% kernel 12-14 09:57:39.474: E/ActivityManager(74): 1.8% 251/Binder Thread #: 1.8% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 80/Binder Thread #: 0.9% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 173/Binder Thread #: 0.9% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 191/Binder Thread #: 0.9% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 250/Binder Thread #: 0% user + 0.9% kernel 12-14 09:57:39.474: E/ActivityManager(74): 12% 287/com.android.deskclock: 7.8% user + 4.4% kernel / faults: 213 minor 12-14 09:57:39.474: E/ActivityManager(74): 11% 299/AsyncHandler: 7.8% user + 3.3% kernel 12-14 09:57:39.474: E/ActivityManager(74): 8.3% 85/bootanimation: 8.3% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 13% 91/BootAnimation: 13% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 4.1% 139/com.android.phone: 3.1% user + 1% kernel / faults: 6 minor 12-14 09:57:39.474: E/ActivityManager(74): 3.1% 139/m.android.phone: 3.1% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 1% 264/Binder Thread #: 1% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 2.8% 41/adbd: 0.9% user + 1.8% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 41/adbd: 0.9% user + 0% kernel 12-14 09:57:39.474: E/ActivityManager(74): 0.9% 65/adbd: 0% user + 0.9% kernel 12-14 09:57:39.474: E/ActivityManager(74): 1.9% 32/zygote: 0% user + 1.9% kernel / faults: 7 minor 12-14 09:57:39.474: E/ActivityManager(74): 100% TOTAL: 80% user + 19% kernel
Improve this question
1
  • Please post your Logcat errors so we don't have to guess. Commented Dec 12, 2012 at 5:56

3 Answers 3

Reset to default
1

You should always post your LogCat errors, but I see one problem right away:

public class CurrentCart extends Activity { DBAdapter db; protected void onCreate(Bundle savedInstanceState) { db=new DBAdapter(this); ...

You cannot reference this in an Activity (or other subclasses of Context) before onCreate().

Addition
That LogCat doesn't directly reference your app... Change how you catch the exceptions to:

try { db.createDataBase(); db.open(); } catch (Exception e) { e.printStackTrace(); }

And see if something more specific appears in your LogCat.

Improve this answer
Sign up to request clarification or add additional context in comments.

5 Comments

yes your answer is correct this refers to nothing before oncreate function
i change position of db=new DBAdapter(this) but it doesn t work
Connect your device to your computer with the USB cable and enable debugging on the device. Now you can test apps on your device just like the emulator.
@Sam : i put this e.printStackTrace(); and use try catch and i understand this lines give me error SimpleCursorAdapter cursorAdapter=new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, answers,from,to); list2.setAdapter(cursorAdapter);i check every things but i can t solve problem:(
Post the new LogCat. The error is probably "column '_id' does not exist", which means you must have the _id column in every Cursor used in an Android adapter. Use SELECT Cart_ID as _id and new String[] {"_id"}.
0

SELECT CartID where CartID Grammar mistakes.

Improve this answer

Comments

0

Have set the right ID for the ListView? You can check the layout file. There would be a android:id="@+id/list in the ListView control. If not, the ListView in your code is null, and the App will get force close.

Improve this answer

Comments

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.