我花了太多时间来解决这个问题。希望你们（或女孩......）可以帮助我！
LogCat 说错误是'在“设置”附近'，但我找不到问题。
日志猫
10-20 17:21:05.969 2135-2135/com.sahota.breakfit E/SQLiteLog﹕ (1) near "set": syntax error
10-20 17:21:05.969 2135-2135/com.sahota.breakfit E/SQLiteDatabase﹕ Error inserting set_length=15 break_timer=60 exercise_name=BenchPress set=5
android.database.sqlite.SQLiteException: near "set": syntax error (code 1): , while compiling: INSERT INTO db_table(set_length,break_timer,exercise_name,set) VALUES (?,?,?,?)
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
at com.sahota.breakfit.DBOpenHelper.insertRecord(DBOpenHelper.java:86)
at com.sahota.breakfit.MainActivity.onCreate(MainActivity.java:51)
at android.app.Activity.performCreate(Activity.java:5104)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
主要活动
public class MainActivity extends Activity {
DBOpenHelper db = new DBOpenHelper(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
String destPath = "/data/data/" + getPackageName() + "/databases/DBBreakFit";
File f = new File(destPath);
if (!f.exists()) {
CopyDB(getBaseContext().getAssets().open("mydb"),
new FileOutputStream(destPath));
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// ---add an assignment---
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
long
id = db.insertRecord("BenchPress", "60", "5", "15");
id = db.insertRecord("Cablecrunch", "120", "6", "20");
id = db.insertRecord("Squat", "30", "2", "120");
db.close();
//---get all Records---
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
Cursor c = db.getAllRecords();
if (c.moveToFirst()) {
do {
DisplayRecord(c);
} while (c.moveToNext());
}
db.close();
//---get a Record---
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
Cursor cursor = null;
try {
cursor = db.getRecord(2);
} catch (SQLException e) {
e.printStackTrace();
}
if (cursor.moveToFirst())
DisplayRecord(cursor);
else
Toast.makeText(this, "No Assignments found", Toast.LENGTH_LONG).show();
db.close();
//---update Record---
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
if (db.updateRecord(1, "Hello Android", "2/19/2012", "DPR 224", "First Android Project"))
Toast.makeText(this, "Update successful.", Toast.LENGTH_LONG).show();
else
Toast.makeText(this, "Update failed.", Toast.LENGTH_LONG).show();
db.close();
//---delete a Record---
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
if (db.deleteContact(1))
Toast.makeText(this, "Delete successful.", Toast.LENGTH_LONG).show();
else
Toast.makeText(this, "Delete failed.", Toast.LENGTH_LONG).show();
db.close();
}
public void TestProfilesMain(View view) {
Intent intent = new Intent(this, ProfilesMain.class);
startActivity(intent);
}
DBOpenHelper
package com.sahota.breakfit;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import java.sql.SQLException;
/**
* Created by Harjit S. Sahota on 14-10-13.
*/
public class DBOpenHelper {
public static final String LOG_CAT = "logcat";
public static final String KEY_ROWID = "id";
public static final String EXERCISE_NAME = "exercise_name";
public static final String BREAK_TIMER = "break_timer";
public static final String SET = "set";
public static final String SET_LENGTH = "set_length";
private static final String TAG = "DBOpenHelper";
private static final String DATABASE_NAME = "DBName";
private static final String DATABASE_TABLE = "db_table";
private static final int DATABASE_VERSION = 2;
private static String DATABASE_CREATE = "create table if not exists profile(id integer primary key autoincrement, " +
"exercise_name VARCHAR not null, break_timer VARCHAR not null, set VARCHAR not null, set_length VARCHAR not null);";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
public DBOpenHelper(Context ctx) {
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
try {
db.execSQL(DATABASE_CREATE);
} catch (SQLiteException e) {
e.printStackTrace();
}
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version" + oldVersion + " to " + newVersion + " which will destroy all old data!");
db.execSQL("DROP TABLE IF EXISTS profile");
onCreate(db);
}
}
public DBOpenHelper open() throws SQLException {
db = DBHelper.getWritableDatabase();
return this;
}
public void close() {
DBHelper.close();
}
public long insertRecord(String exerciseName, String breakTimer, String set, String setLength) {
ContentValues initialValues = new ContentValues();
initialValues.put(EXERCISE_NAME, exerciseName);
initialValues.put(BREAK_TIMER, breakTimer);
initialValues.put(SET, set);
initialValues.put(SET_LENGTH, setLength);
return db.insert(DATABASE_TABLE, null, initialValues);
}
public boolean deleteContact(long rowID) {
return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowID, null) > 0;
}
public Cursor getAllRecords() {
return db.query(DATABASE_TABLE, new String[] {KEY_ROWID, EXERCISE_NAME, BREAK_TIMER, SET, SET_LENGTH}, null, null, null, null, null);
}
public Cursor getRecord(long rowId) throws SQLException {
Cursor mCursor =
db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
EXERCISE_NAME, BREAK_TIMER, SET, SET_LENGTH},
KEY_ROWID + "=" + rowId, null, null, null, null, null);
if (mCursor != null ) {
mCursor.moveToFirst();
}
return mCursor;
}
public boolean updateRecord(long rowId, String exerciseName, String breakTimer, String set, String setLength) {
ContentValues args = new ContentValues();
args.put(EXERCISE_NAME, exerciseName);
args.put(BREAK_TIMER, breakTimer);
args.put(SET, set);
args.put(SET_LENGTH, setLength);
return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) >0;
}
}
个人资料创建
public class ProfilesCreate extends Activity {
DBOpenHelper db = new DBOpenHelper(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.profilecreate);
}
public void addExercise(View view) {
//Getting data from Profiles create-form
EditText exerciseName = (EditText) findViewById(R.id.exercisename_edittext);
EditText breakTimer = (EditText) findViewById(R.id.breaktimer_edittext);
EditText set = (EditText) findViewById(R.id.set_edittext);
EditText setLength = (EditText) findViewById(R.id.set_edittext);
try {
db.open();
} catch (SQLException e) {
e.printStackTrace();
}
long id = db.insertRecord(exerciseName.getText().toString(),
breakTimer.getText().toString(),
set.getText().toString(),
setLength.getText().toString());
db.close();
//After submitting, replace the text with an empty character.
exerciseName.setText("");
breakTimer.setText("");
set.setText("");
setLength.setText("");
Toast.makeText(ProfilesCreate.this, "Exercise Added!", Toast.LENGTH_LONG).show();
}
public void addExerciseButton(View view) {
Intent intent = new Intent(this, ProfilesShow.class);
startActivity(intent);
}
}