質問編集履歴
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@@ -6,4 +6,124 @@
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現在更新ボタンをおしたときに、position情報を取得するところまではできたのですが、
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position情報からEditTextの情報を取得しても入力内容変更前のデータしか取得することができません。
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参考になりそうな文献が少ないため、方法をご教授していただければ幸いです。
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参考になりそうな文献が少ないため、方法をご教授していただければ幸いです。
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追記
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●DataBaseActivity.java
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```
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public class DataBaseActivity extends ActionBarActivity {
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static final String DB = "sqlite_sample.db";
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static final int DB_VERSION = 1;
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static final String CREATE_TABLE = "create table mytable ( _id integer primary key autoincrement, data integer not null );";
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static final String DROP_TABLE = "drop table mytable;";
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static SQLiteDatabase mydb;
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private SimpleCursorAdapter myadapter;
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private static final String TAG = MainActivity.class.getSimpleName();
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private ListView listview;
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private Button addbtn, delbtn, addTxtbtn;
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_data_base);
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MySQLiteOpenHelper hlpr = new MySQLiteOpenHelper(getApplicationContext());
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mydb = hlpr.getWritableDatabase();
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Cursor cursor = mydb.query("mytable", new String[] {"_id", "data"}, null, null, null, null, "_id DESC");
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String[] from = new String[] {"_id", "data"};
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int[] to = new int[] {R.id.db_id, R.id.db_data};
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startManagingCursor(cursor);
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myadapter = new SimpleCursorBtnAdapter(this,R.layout.db_text, cursor, from, to,R.id.btn_update);
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listview = (ListView)findViewById(R.id.db_listView);
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listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
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@Override
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public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
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update(parent,view,position,id);
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}
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});
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listview.setAdapter(myadapter);
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}
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private static class MySQLiteOpenHelper extends SQLiteOpenHelper {
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public MySQLiteOpenHelper(Context c) {
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super(c, DB, null, DB_VERSION);
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}
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public void onCreate(SQLiteDatabase db) {
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db.execSQL(CREATE_TABLE);
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}
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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db.execSQL(DROP_TABLE);
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onCreate(db);
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}
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}
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/**
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* 更新を行う（未完成）
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* @param parent
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* @param view
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* @param position
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* @param id
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*/
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private void update(AdapterView<?> parent, View view, int position, long id) {
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ListView listView = (ListView) parent;
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Cursor item = (Cursor)listView.getItemAtPosition(position);
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int lgin_id = item.getInt(item.getColumnIndex("_id"));
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String lgin_name = item.getString(item.getColumnIndex("data"));
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Log.d("ItemClick", "id="+lgin_id+", data=" + lgin_name);
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}
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}
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```
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●DataBaseActivity.java
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```
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/**
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* ListViewにおけるボタン要素のポジション取得アダプター
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* Created by r-aga on 2015/07/13.
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*/
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public class SimpleCursorBtnAdapter extends SimpleCursorAdapter {
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private int mButton;
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public SimpleCursorBtnAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int button) {
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super(context, layout, c, from, to);
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mButton = button;
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}
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public View getView(final int position, View convertView, final ViewGroup parent) {
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View view = super.getView(position, convertView, parent);
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Button btn = (Button) view.findViewById(mButton);
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btn.setTag(position);
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btn.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View arg) {
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AdapterView.OnItemClickListener listener = list.getOnItemClickListener();
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long id = getItemId(position);
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listener.onItemClick((AdapterView<?>) parent, arg, position, id);
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}
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});
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return view;
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}
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}
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```
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125
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126
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不要な部分は削除したので、おかしなところがあるかもしれません。
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127
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ListViewにおいて、更新ボタンを押した時のpositionを作成するために、アダプターを自前で用意しています。
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参考サイト
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129
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http://blogs.gine.jp/taka/archives/2966
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