所以我有这个简单的SQLite数据库，当我把它命名为“contactsManager”（从我正在关注的一些教程中取名时）它有效但除了那个名称之外没什么可行的我尝试了很多名字（骆驼案例，单词之间的下划线） ，每个单词的第一个字母以大写字母开头，只有一个字，开始小写字母，以大写字母开头）如果我不使用“contactsManager”应用程序将无法工作（我做了另一个项目，这不是我的同一个项目在执行教程的同时）这里是数据库类代码
`package com.bignerdranch.android.test;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class DataBaseHelper extends SQLiteOpenHelper{
private static final String DATABASE_NAME="contactsManager";
private static final int DATABASE_VERSION =1;
private static final String TABLE_NAME="table";
private static final String COL_NAME="name";
public DataBaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
SQLiteDatabase db= this.getWritableDatabase();
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_NAME + "("
+ COL_NAME + " INTEGER PRIMARY KEY,"+")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP ABLE IF EXSITS"+TABLE_NAME);
onCreate(db);
}
}`
这是主要代码
`package com.bignerdranch.android.test;
package com.bignerdranch.android.test;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
public Button mButton;
public EditText mEditText;
DataBaseHelper DataBase;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*mButton=(Button)findViewById(R.id.button);
mEditText=(EditText)findViewById(R.id.Text);*/
DataBase= new DataBaseHelper(this);
}
}`
然后我将名称更改为
private static final String DATABASE_NAME="Hello";
logcat的
02-01 14:00:29.195 8487-8487/? I/art: Late-enabling -Xcheck:jni
02-01 14:00:29.195 8487-8487/? W/art: Unexpected CPU variant for X86 using defaults: x86
02-01 14:00:29.220 8487-8493/? E/art: Failed sending reply to debugger: Broken pipe
02-01 14:00:29.220 8487-8493/? I/art: Debugger is no longer active
02-01 14:00:29.220 8487-8493/? I/art: Starting a blocking GC Instrumentation
02-01 14:00:29.273 8487-8487/? W/System: ClassLoader referenced unknown path: /data/app/com.bignerdranch.android.test-2/lib/x86
02-01 14:00:29.279 8487-8487/? I/InstantRun: Instant Run Runtime started. Android package is com.bignerdranch.android.test, real application class is null.
02-01 14:00:29.845 8487-8487/? W/System: ClassLoader referenced unknown path: /data/app/com.bignerdranch.android.test-2/lib/x86
02-01 14:00:29.995 8487-8487/? W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
02-01 14:00:30.163 8487-8487/? E/SQLiteLog: (1) near "table": syntax error
02-01 14:00:30.164 8487-8487/? D/AndroidRuntime: Shutting down VM
--------- beginning of crash
02-01 14:00:30.167 8487-8487/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.bignerdranch.android.test, PID: 8487
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bignerdranch.android.test/com.bignerdranch.android.test.MainActivity}: android.database.sqlite.SQLiteException: near "table": syntax error (code 1): , while compiling: CREATE TABLE table(nameTEXT)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: android.database.sqlite.SQLiteException: near "table": syntax error (code 1): , while compiling: CREATE TABLE table(nameTEXT)
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1675)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1606)
at com.bignerdranch.android.test.DataBaseHelper.onCreate(DataBaseHelper.java:26)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:251)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
at com.bignerdranch.android.test.DataBaseHelper.<init>(DataBaseHelper.java:18)
at com.bignerdranch.android.test.MainActivity.onCreate(MainActivity.java:22)
at android.app.Activity.performCreate(Activity.java:6664)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
答案 0 :(得分：1)
以下是您错误中最重要的部分：
引起：android.database.sqlite.SQLiteException：near＆＃34; table＆＃34 ;:语法错误（代码1）:,同时编译：CREATE TABLE表（nameTEXT）
您的问题根本不是数据库名称，而是您的表名。您无法为表格table命名。单词table是SQL中的关键字。为您的表选择一个不同的名称。
此处还有一个错误：您需要在列名称与其类型之间留一个空格。将nameTEXT更改为name TEXT。
答案 1 :(得分：0)
错误的听写
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXSITS"+TABLE_NAME);
onCreate(db);
}
而不是你写的* able
答案 2 :(得分：0)
我认为你应该替换：
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_NAME + "("
+ COL_NAME + " INTEGER PRIMARY KEY,"+")";
使用：
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_NAME + "("
+ COL_NAME + " INTEGER PRIMARY KEY"+")";
在,
KEY