SQLite を使用して DB を構築しました。DB にデータを入力するメイン アクティビティ ファイルを実行しようとすると、onCreate でクラッシュします。アクティビティをロードできません。私の onCreate メソッドは、getWriteableDatabase を使用してデータベースを開き、そこから値 className、workoutName、および id を作成したテーブルに追加して、これらの値を実行します。何らかの理由で、アクティビティが読み込まれません。何か案は?
以下は私のコードです:
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class poetry3 extends Activity {
Button next;
ClassName addName;
Preference prefs;
DBHelper1 dbHelper;
SQLiteDatabase db;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.poetry3);
dbHelper = new DBHelper1(this);
String className = "edu.njit.hss.poetry3";
String workoutName = "Poetry 3";
Calendar currentDate = Calendar.getInstance();
String date = currentDate.getTime().toString();
int classID = 1;
db = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
//if(values.size() > 25)
values.clear();
values.put(DBHelper1.C_ID, classID);
values.put(DBHelper1.C_CLASSNAME, className);
values.put(DBHelper1.C_WORKOUT_NAME, workoutName);
values.put(DBHelper1.C_CREATED_AT, date);
db.insertOrThrow(DBHelper1.TABLE, null, values);
next = (Button)findViewById(R.id.Continue);
next.setOnClickListener(phaseHandler);
}
View.OnClickListener phaseHandler = new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(next.getId() == ((Button)v).getId()){
Intent i = new Intent(poetry3.this, poetry5.class);
startActivity(i);
}
}
};
}
logcat の出力は次のとおりです。
07-21 18:57:26.628: ERROR/AndroidRuntime(695): FATAL EXCEPTION: main
07-21 18:57:26.628: ERROR/AndroidRuntime(695): java.lang.RuntimeException: Unable to start activity ComponentInfo{edu.njit.hss/edu.njit.hss.poetry3}: android.database.sqlite.SQLiteException: near "at": syntax error: , while compiling: INSERT INTO history(workout_name, created at, _ID, classname) VALUES(?, ?, ?, ?);
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1622)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1638)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:928)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.os.Handler.dispatchMessage(Handler.java:99)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.os.Looper.loop(Looper.java:123)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread.main(ActivityThread.java:3647)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at java.lang.reflect.Method.invokeNative(Native Method)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at java.lang.reflect.Method.invoke(Method.java:507)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at dalvik.system.NativeStart.main(Native Method)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): Caused by: android.database.sqlite.SQLiteException: near "at": syntax error: , while compiling: INSERT INTO history(workout_name, created at, _ID, classname) VALUES(?, ?, ?, ?);
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:41)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1149)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1549)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.database.sqlite.SQLiteDatabase.insertOrThrow(SQLiteDatabase.java:1444)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at edu.njit.hss.poetry3.onCreate(poetry3.java:49)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1586)
07-21 18:57:26.628: ERROR/AndroidRuntime(695): ... 11 more
07-21 18:57:26.658: WARN/ActivityManager(39): Force finishing activity edu.njit.hss/.poetry3