Databases
StackOverflow2013
Postsdbo
POFatal exception: main Runtime error
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POFatal exception: main Runtime error
    primarykey
    data
    text
    <p>I get this in my logcat:</p> <pre><code>11-11 17:11:42.161: E/AndroidRuntime(23599): FATAL EXCEPTION: main 11-11 17:11:42.161: E/AndroidRuntime(23599): java.lang.NullPointerException 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.example.lightalarmclock.AddBox.setAlarm(AddBox.java:164) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.example.lightalarmclock.AddBox.onOptionsItemSelected(AddBox.java:147) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.app.Activity.onMenuItemSelected(Activity.java:2642) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1039) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.view.menu.ActionMenuView.invokeItem(ActionMenuView.java:547) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:115) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.view.View.performClick(View.java:4247) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.view.View$PerformClick.run(View.java:17728) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.os.Handler.handleCallback(Handler.java:730) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.os.Handler.dispatchMessage(Handler.java:92) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.os.Looper.loop(Looper.java:137) 11-11 17:11:42.161: E/AndroidRuntime(23599): at android.app.ActivityThread.main(ActivityThread.java:5298) 11-11 17:11:42.161: E/AndroidRuntime(23599): at java.lang.reflect.Method.invokeNative(Native Method) 11-11 17:11:42.161: E/AndroidRuntime(23599): at java.lang.reflect.Method.invoke(Method.java:525) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738) 11-11 17:11:42.161: E/AndroidRuntime(23599): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554) 11-11 17:11:42.161: E/AndroidRuntime(23599): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>So the error is showing a problem on 164th line, right?</p> <p>So here is the code:</p> <pre><code>private void setAlarm (SQLiteDatabase db){ if (rep1 &gt;= 0 || rep2 &gt;= 0 || rep3 &gt;= 0 || rep4 &gt;= 0 || rep5 &gt;= 0 || rep6 &gt;= 0 || rep7 &gt;= 0){ repB = 1; } else { repB = 2; } timeSet= pos4+pos3+":"+pos2+pos1; db.execSQL("INSERT INTO TABLE alarmStack(alarm_time, alarm_repeat, rep1d, rep2d, rep3d, rep4d, rep5d, rep6d, rep7d) " + "VALUES (timeSet, repB, rep1, rep2, rep3, rep4, rep5, rep6, rep7)"); } </code></pre> <p>Line 164 is the one with db.execSQL.</p> <p>I guess I'm imputing values wrong but I can't seem to fix it so I'm coming here. I guess the values in alarmStack(...) are viewed as variables but they should be a part of a string to indicate the columns I'm editing in SQL, but I cant find a solution or the right syntax for this.</p> <p>EDIT:</p> <p>So in the comments @user1676075 said that "db" var is null, to fix that I did this:</p> <pre><code>private static class dbHelper extends SQLiteOpenHelper{ public dbHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { //writing to database if (rep1 &gt;= 0 || rep2 &gt;= 0 || rep3 &gt;= 0 || rep4 &gt;= 0 || rep5 &gt;= 0 || rep6 &gt;= 0 || rep7 &gt;= 0){ repB = 1; } else { repB = 0; } //setting time timeSet= pos4+pos3+":"+pos2+pos1; //Writing db.execSQL ("INSERT INTO TABLE alarmDB.alarmStack(alarm_time, alarm_repeat, rep1, rep2, rep3, rep4, rep5, rep6, rep7) " + "VALUES (timeSet, repB, rep1, rep2, rep3, rep4, rep5, rep6, rep7)"); //launch backToMain //backToMain(ourCtx); } </code></pre> <p>But now for some reason it can't instantiate that dbHelper and I get this:</p> <pre><code>11-12 20:47:42.852: E/AndroidRuntime(18656): FATAL EXCEPTION: main 11-12 20:47:42.852: E/AndroidRuntime(18656): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.lightalarmclock/com.example.lightalarmclock.AddBox$dbHelper}: java.lang.InstantiationException: can't instantiate class com.example.lightalarmclock.AddBox$dbHelper; no empty constructor 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2266) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2400) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread.access$600(ActivityThread.java:153) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1269) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.os.Handler.dispatchMessage(Handler.java:99) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.os.Looper.loop(Looper.java:137) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread.main(ActivityThread.java:5298) 11-12 20:47:42.852: E/AndroidRuntime(18656): at java.lang.reflect.Method.invokeNative(Native Method) 11-12 20:47:42.852: E/AndroidRuntime(18656): at java.lang.reflect.Method.invoke(Method.java:525) 11-12 20:47:42.852: E/AndroidRuntime(18656): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738) 11-12 20:47:42.852: E/AndroidRuntime(18656): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554) 11-12 20:47:42.852: E/AndroidRuntime(18656): at dalvik.system.NativeStart.main(Native Method) 11-12 20:47:42.852: E/AndroidRuntime(18656): Caused by: java.lang.InstantiationException: can't instantiate class com.example.lightalarmclock.AddBox$dbHelper; no empty constructor 11-12 20:47:42.852: E/AndroidRuntime(18656): at java.lang.Class.newInstanceImpl(Native Method) 11-12 20:47:42.852: E/AndroidRuntime(18656): at java.lang.Class.newInstance(Class.java:1130) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 11-12 20:47:42.852: E/AndroidRuntime(18656): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257) 11-12 20:47:42.852: E/AndroidRuntime(18656): ... 11 more </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USeightShirt
    1. USuser2979816
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYour LogCat shows that you have a `NullPointerException` on line 164. Put a breakpoint there, and find out which variable is null, then analyze why it might be null.
      singulars
      1. POFatal exception: main Runtime error
      1. USTanis.7x
    2. CORegarding that SQL statement, it's been a while since I've made one in java, but doesn't that statement not extract the values of the variables either? It appears to me that you're executing: `INSERT INTO TABLE alarmStack(alarm_time, alarm_repeat, rep1d, rep2d, rep3d, rep4d, rep5d, rep6d, rep7d) VALUES (timeSet, repB, rep1, rep2, rep3, rep4, rep5, rep6, rep7)` rather than the values associated with rep1 and so on.
      singulars
      1. POFatal exception: main Runtime error
      1. USCompass
    3. CONot the cause of the NPE, but your SQL statement needs to be formed something like: db.execSQL("INSERT INTO TABLE alarmStack(alarm_time, ... " + "VALUES (" + timeSet + "," + repB + "," + ... + ")");
      singulars
      1. POFatal exception: main Runtime error
      1. USNigelK
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload