Java tutorial
/* * Copyright 2012 Jakob Flierl * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package liqui.droid.activity; import liqui.droid.db.DBSystem; import liqui.droid.db.DBSystemProvider; import liqui.droid.holder.BreadCrumbHolder; import liqui.droid.R; import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.widget.CursorAdapter; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.ListView; import android.widget.TextView; import android.widget.AdapterView.OnItemClickListener; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; /** * The Class LQFBListCached. */ public class InstanceListCached extends Base implements LoaderCallbacks<Cursor>, OnItemClickListener { public static final Uri CONTENT_URI = DBSystemProvider.INSTANCE_CONTENT_URI; protected static final int ACTIVITY_CREATE = 2342; protected static final int ACTIVITY_EDIT = 2343; protected static final int DELETE_ID = Menu.FIRST + 1; protected static final int DUPLICATE_ID = Menu.FIRST + 2; protected InstanceCursorAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.act_lqfb_list); setUpActionBar(); createBreadcrumb(getString(R.string.lqfb_edit_instances), (BreadCrumbHolder[]) null); getSupportLoaderManager().initLoader(0, null, this); mAdapter = new InstanceCursorAdapter(this, null, true); ListView listView = (ListView) findViewById(R.id.list_view); listView.setOnItemClickListener(this); listView.setAdapter(mAdapter); registerForContextMenu(listView); } @Override public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { Cursor c = (Cursor) adapterView.getAdapter().getItem(position); Intent intent = new Intent().setClass(InstanceListCached.this, InstanceEdit.class); Uri uri = Uri.parse(DBSystemProvider.INSTANCE_CONTENT_URI + "/" + c.getInt(c.getColumnIndex(DBSystem.Instance.COLUMN_ID))); intent.putExtra(DBSystemProvider.INSTANCE_CONTENT_ITEM_TYPE, uri); startActivityForResult(intent, ACTIVITY_EDIT); } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getSupportMenuInflater(); inflater.inflate(R.menu.list_menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.insert: createLQFB(); return true; } return super.onOptionsItemSelected(item); } public void createLQFB() { Intent i = new Intent(this, InstanceEdit.class); startActivityForResult(i, ACTIVITY_CREATE); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.add(0, DELETE_ID, 0, getString(R.string.delete)); menu.add(0, DUPLICATE_ID, 1, getString(R.string.duplicate)); } @Override public boolean onContextItemSelected(android.view.MenuItem item) { switch (item.getItemId()) { case DELETE_ID: AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); getContentResolver().delete(Uri.parse(DBSystemProvider.INSTANCE_CONTENT_URI + "/" + info.id), null, null); return true; case DUPLICATE_ID: AdapterContextMenuInfo info2 = (AdapterContextMenuInfo) item.getMenuInfo(); Cursor c = getContentResolver().query(Uri.parse(DBSystemProvider.INSTANCE_CONTENT_URI + "/" + info2.id), null, null, null, null); c.moveToFirst(); ContentValues values = new ContentValues(); values.put(DBSystem.Instance.COLUMN_NAME, c.getString(c.getColumnIndex(DBSystem.Instance.COLUMN_NAME))); values.put(DBSystem.Instance.COLUMN_URL, c.getString(c.getColumnIndex(DBSystem.Instance.COLUMN_URL))); values.put(DBSystem.Instance.COLUMN_WEB_URL, c.getString(c.getColumnIndex(DBSystem.Instance.COLUMN_WEB_URL))); values.put(DBSystem.Instance.COLUMN_API_KEY, c.getString(c.getColumnIndex(DBSystem.Instance.COLUMN_API_KEY))); c.close(); getContentResolver().insert(DBSystemProvider.INSTANCE_CONTENT_URI, values); return true; } return super.onContextItemSelected(item); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); } @Override public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) { CursorLoader cursorLoader = new CursorLoader(getApplication(), CONTENT_URI, null, null, null, null); return cursorLoader; } @Override public void onLoadFinished(Loader<Cursor> cl, Cursor cursor) { mAdapter.swapCursor(cursor); } @Override public void onLoaderReset(Loader<Cursor> cursor) { mAdapter.swapCursor(null); } /** * The Instance cursor adapter. */ public class InstanceCursorAdapter extends CursorAdapter { public InstanceCursorAdapter(Context context, Cursor c, boolean autoRequery) { super(context, c, autoRequery); } public InstanceCursorAdapter(Context context, Cursor c, int flags) { super(context, c, flags); } @Override public void bindView(View view, Context context, Cursor cursor) { String name = cursor.getString(cursor.getColumnIndex(DBSystem.Instance.COLUMN_NAME)); String web_url = cursor.getString(cursor.getColumnIndex(DBSystem.Instance.COLUMN_WEB_URL)); String url = cursor.getString(cursor.getColumnIndex(DBSystem.Instance.COLUMN_URL)); String api_key = cursor.getString(cursor.getColumnIndex(DBSystem.Instance.COLUMN_API_KEY)); TextView tv_summary = (TextView) view.findViewById(R.id.tv_title); tv_summary.setText(name); TextView tv_desc = (TextView) view.findViewById(R.id.tv_desc); tv_desc.setText(web_url); TextView tv_desc2 = (TextView) view.findViewById(R.id.tv_desc2); tv_desc2.setText(url); TextView tv_extra = (TextView) view.findViewById(R.id.tv_extra); tv_extra.setText(api_key); } @Override public View newView(Context context, Cursor cursor, ViewGroup viewGroup) { LayoutInflater inflater = LayoutInflater.from(context); View v = inflater.inflate(R.layout.row_simple_4, viewGroup, false); bindView(v, context, cursor); return v; } } }