您好我是Android新手我试图在我的SQLite数据库上添加id作为主键自动增量，但是log-cat错误消息说＆＃34; table Expenses有5列，但提供了4个值＆＃34;我不希望ID显示在用户界面上。有人可以帮我吗？感谢。
这是我的源代码：
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//spinner
mCategory = (Spinner)findViewById(R.id.spCategory);
SpPayType = (Spinner)findViewById(R.id.sp_PayType);
adapter = ArrayAdapter.createFromResource(this, R.array.Category, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
mCategory.setAdapter(adapter);
adapter = ArrayAdapter.createFromResource(this, R.array.PType, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
SpPayType.setAdapter(adapter);
db=openOrCreateDatabase("MyDB2",MODE_PRIVATE, null);
db.execSQL("CREATE TABLE IF NOT EXISTS Expenses(ID INTEGER PRIMARY KEY AUTOINCREMENT,Category String,Amount int,PType String,Date VARCHAR);");
}
/*function to add data in to db */
public void CreatExpenses(View view)
{
// EditText edittext6 = (EditText)findViewById(R.id.edittrans_id);
mCategory = (Spinner )findViewById(R.id.spCategory);
EditText edittext2 = (EditText )findViewById(R.id.AmountEditText);
SpPayType = (Spinner )findViewById(R.id.sp_PayType);
EditText edittext4 = (EditText )findViewById(R.id.DateEditText);
// ID = edittext6.getText().toString();
category = mCategory.getSelectedItem().toString();
Amount = edittext2.getText().toString();
payment_type = SpPayType.getSelectedItem().toString();
Date = edittext4.getText().toString();
db.execSQL("INSERT INTO Expenses VALUES('"+category+"','"+Amount+"','"+payment_type+"','"+Date+"');");
Toast.makeText(getBaseContext(), "Your info is saved successfully!", Toast.LENGTH_SHORT).show();
}
public void ShowExpens(View view)
{
Cursor c=db.rawQuery("SELECT * from Expenses ", null);
int count= c.getCount();
c.moveToFirst();
TableLayout tableLayout = new TableLayout(getApplicationContext());
tableLayout.setVerticalScrollBarEnabled(true);
TableRow tableRow;
TextView TransID,ExpeCategory,ExpAmount,PayMethod,ExpDate;
tableRow = new TableRow(getApplicationContext());
/* TransID = new TextView(getApplicationContext());
TransID.setText("ID");
TransID.setTextColor(Color.RED);
TransID.setTypeface(null, Typeface.BOLD);
TransID.setPadding(10, 10, 10, 10);
tableRow.addView(TransID);
*/
ExpeCategory=new TextView(getApplicationContext());
ExpeCategory.setText("Category");
ExpeCategory.setTextColor(Color.RED);
ExpeCategory.setTypeface(null, Typeface.BOLD);
ExpeCategory.setPadding(10, 10, 10, 10);
tableRow.addView(ExpeCategory);
ExpAmount = new TextView(getApplicationContext());
ExpAmount.setText("Amount");
ExpAmount.setTextColor(Color.GREEN);
ExpAmount.setTypeface(null, Typeface.BOLD);
ExpAmount.setPadding(10, 10, 10, 10);
tableRow.addView(ExpAmount);
PayMethod = new TextView(getApplicationContext());
PayMethod.setText("PType");
PayMethod.setTextColor(Color.RED);
PayMethod.setTypeface(null, Typeface.BOLD);
PayMethod.setPadding(10, 10, 10, 10);
tableRow.addView(PayMethod);
ExpDate = new TextView(getApplicationContext());
ExpDate.setText("Date");
ExpDate.setTextColor(Color.RED);
ExpDate.setTypeface(null, Typeface.BOLD);
ExpDate.setPadding(10, 10, 10, 10);
tableRow.addView(ExpDate);
tableLayout.addView(tableRow);
for (Integer j = 0; j < count; j++)
{
tableRow = new TableRow(getApplicationContext());
TransID = new TextView(getApplicationContext());
TransID.setText(c.getString(c.getColumnIndex("ID")));
ExpeCategory = new TextView(getApplicationContext());
ExpeCategory.setText(c.getString(c.getColumnIndex("Category")));
ExpAmount = new TextView(getApplicationContext());
ExpAmount.setText(c.getString(c.getColumnIndex("Amount")));
PayMethod = new TextView(getApplicationContext());
PayMethod.setText(c.getString(c.getColumnIndex("PType")));
ExpDate = new TextView(getApplicationContext());
ExpDate.setText(c.getString(c.getColumnIndex("Date")));
/* TransID.setPadding(10, 10, 10, 10);
ExpeCategory.setPadding(10, 10, 10, 10);
ExpAmount.setPadding(10, 10, 10, 10);
PayMethod.setPadding(10, 10, 10, 10);
ExpDate.setPadding(10, 10, 10, 10);
*/
// tableRow.addView(TransID);
tableRow.addView(ExpeCategory);
tableRow.addView(ExpAmount);
tableRow.addView(PayMethod);
tableRow.addView(ExpDate);
tableLayout.addView(tableRow);
c.moveToNext() ;
}
setContentView(tableLayout);
db.close();
}
public void close(View view)
{
System.exit(0);
}
}
以下是log-cat
12-09 11:00:19.604: I/Choreographer(1161): Skipped 34 frames! The application may be doing too much work on its main thread.
12-09 11:00:19.714: D/gralloc_goldfish(1161): Emulator without GPU emulation detected.
12-09 11:00:33.394: E/SQLiteLog(1161): (1) table Expenses has 5 columns but 4 values were supplied
12-09 11:00:33.394: D/AndroidRuntime(1161): Shutting down VM
12-09 11:00:33.404: W/dalvikvm(1161): threadid=1: thread exiting with uncaught exception (group=0xb2ac0ba8)
12-09 11:00:33.534: E/AndroidRuntime(1161): FATAL EXCEPTION: main
12-09 11:00:33.534: E/AndroidRuntime(1161): Process: com.info.househouldexpcalulator, PID: 1161
12-09 11:00:33.534: E/AndroidRuntime(1161): java.lang.IllegalStateException: Could not execute method of the activity
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.view.View$1.onClick(View.java:3823)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.view.View.performClick(View.java:4438)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.view.View$PerformClick.run(View.java:18422)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.os.Handler.handleCallback(Handler.java:733)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.os.Handler.dispatchMessage(Handler.java:95)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.os.Looper.loop(Looper.java:136)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.app.ActivityThread.main(ActivityThread.java:5017)
12-09 11:00:33.534: E/AndroidRuntime(1161): at java.lang.reflect.Method.invokeNative(Native Method)
12-09 11:00:33.534: E/AndroidRuntime(1161): at java.lang.reflect.Method.invoke(Method.java:515)
12-09 11:00:33.534: E/AndroidRuntime(1161): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
12-09 11:00:33.534: E/AndroidRuntime(1161): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
12-09 11:00:33.534: E/AndroidRuntime(1161): at dalvik.system.NativeStart.main(Native Method)
12-09 11:00:33.534: E/AndroidRuntime(1161): Caused by: java.lang.reflect.InvocationTargetException
12-09 11:00:33.534: E/AndroidRuntime(1161): at java.lang.reflect.Method.invokeNative(Native Method)
12-09 11:00:33.534: E/AndroidRuntime(1161): at java.lang.reflect.Method.invoke(Method.java:515)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.view.View$1.onClick(View.java:3818)
12-09 11:00:33.534: E/AndroidRuntime(1161): ... 11 more
12-09 11:00:33.534: E/AndroidRuntime(1161): Caused by: android.database.sqlite.SQLiteException: table Expenses has 5 columns but 4 values were supplied (code 1): , while compiling: INSERT INTO Expenses VALUES('Foods','10','Cash','11/12/2014');
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1672)
12-09 11:00:33.534: E/AndroidRuntime(1161): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1603)
12-09 11:00:33.534: E/AndroidRuntime(1161): at com.info.househouldexpcalulator.MainActivity.CreatExpenses(MainActivity.java:71)
12-09 11:00:33.534: E/AndroidRuntime(1161): ... 14 more
12-09 11:00:37.444: I/Process(1161): Sending signal. PID: 1161 SIG: 9
答案 0 :(得分：-1)
CL是正确的以前的答案被打破了
我将您的创建 sql 更改为
“CREATE TABLE IF NOT NOT EXISTS'Expenses'（ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE，Category String，Amount int，PType String，Date VARCHAR）;”
然后将 sql 插入
INSERT INTO费用（类别，金额，PType，日期）VALUES（'“+ category +”'，'“+ Amount +”'，'“+ payment_type +”'，'“+ Date +”'）;
'我不希望ID显示在用户界面上' 这应该对用户界面要求没有影响
答案 1 :(得分：-1)
创建ID列，如 INTEGER PRIMARY KEY AUTOINCREMENT ，您的问题就会得到解决。
CREATE TABLE MyTable ('_id' INTEGER PRIMARY KEY AUTOINCREMENT, c2 text, c3 text, c4 int, c5 text, c6 text, c7 int);
之后不需要在insert语句中包含_id，SQL将收到_id为NULL并自动处理为你设置_id。