-1
私はこの問題を修正するのに長い時間がありましたが、解決できませんでした。 私は間違ったコードはなかったと確信していましたが、エミュレータを実行すると問題はリストビュー上の特定の項目をクリックすると表示されます。私はデータベースを作成し、csvファイルからデータを入れました。ここでのコードは次のとおりE/SQLiteLog：（1）そのような列はありません：100
word_db.csv
DB_Word.java
public class DB_Word extends SQLiteOpenHelper {
public DB_Word(Context context){
super(context, "word.db", null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table if not exists word (word_id integer primary key, category_id_fk integer, word_kor text, word_eng text, word_pro text, foreign key(category_id_fk) references category(category_id));");
System.out.println("Create table word success");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("drop table word;");
onCreate(db);
}
}
Categories_wordview1.java
public class Categories_wordview1 extends AppCompatActivity {
ArrayAdapter<String> Adapter;
ListView wordlist;
DB_Word dbc;
SQLiteDatabase db;
String sql;
Cursor cursor;
String[] result;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_category_wv);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
wordlist = (ListView) findViewById(R.id.wordlist);
dbc = new DB_Word(this);
delete();
insertAll();
select();
}
public void delete(){
try {
System.out.println("delete complete");
db = dbc.getWritableDatabase();
db.execSQL("delete from word;");
} catch (Exception e) {
e.printStackTrace();
}
}
public void select(){
System.out.println("select");
try {
System.out.println("select try");
db = dbc.getReadableDatabase();
sql = "select word_kor, word_eng, word_pro from word;";
cursor = db.rawQuery(sql, null);
int count = cursor.getCount();
result = new String[count];
for(int i = 0; i < count; i++){
System.out.println("select for");
cursor.moveToNext();
String str_kor = cursor.getString(0);
String str_eng = cursor.getString(1);
String str_pro = cursor.getString(2);
result[i] = str_kor + " " + str_eng + " " + str_pro;
}
Adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, result);
wordlist.setAdapter(Adapter);
wordlist.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
} catch (Exception e) {
e.printStackTrace();
}
}
public void insertAll(){
System.out.println("insert");
db = dbc.getWritableDatabase();
InputStream is = this.getResources().openRawResource(R.raw.word_db);
BufferedReader buffer = new BufferedReader(new InputStreamReader(is));
String tableName ="word";
String columns = "word_id, category_id_fk, word_kor";
String str1 = "insert into " + tableName + "(" + columns + ") values(";
String str2 = ");";
String line ="";
db.beginTransaction();
try {
System.out.println("transaction try");
while ((line = buffer.readLine()) != null) {
System.out.println("transaction while");
StringBuilder sb = new StringBuilder(str1);
String[] str = line.split(",");
sb.append(str[0] + ", ");
sb.append(str[1] + ", '");
sb.append(str[2] + "'");
sb.append(str2);
System.out.println(sb.toString());
db.execSQL(sb.toString());
//db.rawQuery(sb.toString(), null);
}
db.setTransactionSuccessful();
db.endTransaction();
}
catch (IOException ex) {
ex.printStackTrace();
}
finally {
try {
is.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
}
ここでlogcatを示している：
12-28 00:04:05.106 1554-1651/? E/TaskPersister: File error accessing recents directory (directory doesn't exist?).
12-28 00:04:15.182 1554-1795/? I/ActivityManager: START u0 {cmp=com.example.project2/.Categories_word.Categories_wordview1} from uid 10009
12-28 00:04:15.194 1380-2231/? W/audio_hw_generic: Not supplying enough data to HAL, expected position 3729276 , only wrote 3728880
12-28 00:04:15.315 3259-3259/? I/System.out: delete complete
12-28 00:04:15.401 3259-3259/? I/System.out: Create table word success
12-28 00:04:15.409 3259-3259/? I/System.out: insert
12-28 00:04:15.411 3259-3259/? I/System.out: transaction try
12-28 00:04:15.412 3259-3259/? I/System.out: transaction while
12-28 00:04:15.412 3259-3259/? I/System.out: insert into word(word_id, category_id_fk, word_kor) values(100, 100, '안녕하세요');
12-28 00:04:15.413 3259-3259/? E/SQLiteLog: (1) no such column: 100
12-28 00:04:15.413 3259-3259/? D/AndroidRuntime: Shutting down VM
12-28 00:04:15.418 3259-3259/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.project2, PID: 3259
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.project2/com.example.project2.Categories_word.Categories_wordview1}: android.database.sqlite.SQLiteException: no such column: 100 (code 1): , while compiling: insert into word(word_id, category_id_fk, word_kor) values(100, 100, '안녕하세요');
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: android.database.sqlite.SQLiteException: no such column: 100 (code 1): , while compiling: insert into word(word_id, category_id_fk, word_kor) values(100, 100, '안녕하세요');
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:1677)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1608)
at com.example.project2.Categories_word.Categories_wordview1.insertAll(Categories_wordview1.java:117)
at com.example.project2.Categories_word.Categories_wordview1.onCreate(Categories_wordview1.java:51)
at android.app.Activity.performCreate(Activity.java:6975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
12-28 00:04:15.483 1554-1566/? W/ActivityManager: Force finishing activity com.example.project2/.Categories_word.Categories_wordview1
12-28 00:04:15.503 1554-1566/? W/ActivityManager: Force finishing activity com.example.project2/.Categories
これは問題です：
E/SQLiteLog：（1）そのような列はありません：100
android.database.sqlite.SQLiteException：そのような列はありません：100（コード1）：、コンパイル中：単語に挿入（word_id、category_id_fk、word_kor）値（100,100、 '안녕하세요'）;