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我一直在我的logcat每次我跑我的代碼，並不能找出如何解決它的時候得到這個。當我更新我得到這個錯誤，我用類似的代碼，當我刪除，並且工作正常。我在更新中使用了斷點，它一直持續到函數結束。我認爲，在startActivityForResult將進入下一個頁面，但事實並非如此。爲startActivityForResult完全相同的代碼在另一個函數錯誤請求。 = numRows行1，爲numColumns = 1
在這裏工作是更新
public void edit_to_report_page(final View v) {
LayoutInflater inflater = LayoutInflater.from(this);
View addView = inflater.inflate(R.layout.new_vehicle, null);
idNum = (EditText) addView.findViewById(R.id.deleteRecord);
new AlertDialog.Builder(this)
.setTitle("Edit a report")
.setMessage("Enter the Id number of the report to edit")
.setView(addView)
.setPositiveButton("Edit",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
String id = idNum.getText().toString();
uniqueID = Long.parseLong(id);
newID(uniqueID);
info.open();
try {
boolean correctNumber = info
.Exists(uniqueID);
if (!correctNumber) {
Toast.makeText(getApplicationContext(),
"Number not found",
Toast.LENGTH_SHORT).show();
info.close();
}else{
info.close();
intent = new Intent(v.getContext(),
report.class);
startActivityForResult(intent, 0);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
}
}).show();
}
這裏的代碼進行刪除的作品
public void delete_db(View v) {
LayoutInflater inflater = LayoutInflater.from(this);
View addView = inflater.inflate(R.layout.new_vehicle, null);
idNum = (EditText) addView.findViewById(R.id.deleteRecord);
final Dialog d = new Dialog(this);
final TextView tv = new TextView(this);
new AlertDialog.Builder(this)
.setTitle("Delete a report")
.setMessage("Enter the Id number of the report to delete")
.setView(addView)
.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
String id = idNum.getText().toString();
long primaryId = Long.parseLong(id);
info.open();
try {
boolean inCorrectNumber = info
.deleteInspection(primaryId);
if (inCorrectNumber) {
Toast.makeText(getApplicationContext(),
"Number not found",
Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
info.close();
dbInfo();
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
}
}).show();
}
這裏是我將對DBAdapter的代碼的代碼刪除和存在（更新）
public boolean Exists(long _id)throws Exception
{
Cursor c = db.query(DB_TABLE, new String[] { KEY_ROWID},
"_id=" + _id, null, null, null, null);
boolean exists=(c.getCount()>0);
c.close();
return exists;
}
public boolean deleteInspection(long _id)throws Exception
{
int numResults = 0;
numResults = db.delete(DB_TABLE,"_id=" + _id , null);
return (numResults < 1);
}
這是我在日誌貓
04-10 09:47:05.006: E/CursorWindow(2961): Bad request for field slot 0,-1. numRows = 1, numColumns = 1
04-10 09:47:05.016: D/AndroidRuntime(2961): Shutting down VM
04-10 09:47:05.027: W/dalvikvm(2961): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-10 09:47:05.046: E/AndroidRuntime(2961): FATAL EXCEPTION: main
04-10 09:47:05.046: E/AndroidRuntime(2961): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.signalsetapp/com.signalsetapp.inspectionchecklist.report}: java.lang.IllegalStateException: get field slot from row 0 col -1 failed
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.os.Handler.dispatchMessage(Handler.java:99)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.os.Looper.loop(Looper.java:123)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-10 09:47:05.046: E/AndroidRuntime(2961): at java.lang.reflect.Method.invokeNative(Native Method)
04-10 09:47:05.046: E/AndroidRuntime(2961): at java.lang.reflect.Method.invoke(Method.java:521)
04-10 09:47:05.046: E/AndroidRuntime(2961): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-10 09:47:05.046: E/AndroidRuntime(2961): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-10 09:47:05.046: E/AndroidRuntime(2961): at dalvik.system.NativeStart.main(Native Method)
04-10 09:47:05.046: E/AndroidRuntime(2961): Caused by: java.lang.IllegalStateException: get field slot from row 0 col -1 failed
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.database.CursorWindow.getString_native(Native Method)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.database.CursorWindow.getString(CursorWindow.java:329)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:49)
04-10 09:47:05.046: E/AndroidRuntime(2961): at com.signalsetapp.inspectionchecklist.report.getInfoFromDB(report.java:129)
04-10 09:47:05.046: E/AndroidRuntime(2961): at com.signalsetapp.inspectionchecklist.report.onCreate(report.java:111)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-10 09:47:05.046: E/AndroidRuntime(2961): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-10 09:47:05.046: E/AndroidRuntime(2961): ... 11 more
你可能要指出哪一行是造成你這個問題。 – erbsman 2012-04-10 17:28:35
我不是100％。我使用了斷點，它一直持續到函數的結尾。 StartActivity沒有進入下一頁，但是在Add函數中使用了相同的StartActivity代碼，並且工作正常 – Aaron 2012-04-10 17:34:31
看起來像「report.java:129」這裏是壞人，是你的代碼？如果是這樣，你可以在上面的內嵌代碼中標記它嗎？應該幫助一下調試這個：D – erbsman 2012-04-10 17:37:54