Java tutorial
/* * Copyright (C) 2012,2013 Renard Wellnitz. * * 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 com.example.linhdq.test.documents.viewing.single; import android.app.Dialog; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.LoaderManager; import android.support.v4.app.NavUtils; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import com.example.linhdq.test.HintDialog; import com.example.linhdq.test.MonitoredActivity; import com.example.linhdq.test.R; import com.example.linhdq.test.documents.viewing.DocumentContentProvider; public class TableOfContentsActivity extends MonitoredActivity implements LoaderManager.LoaderCallbacks<Cursor>, OnItemClickListener { private final static String[] PROJECTION = { DocumentContentProvider.Columns.ID, DocumentContentProvider.Columns.TITLE, DocumentContentProvider.Columns.OCR_TEXT, DocumentContentProvider.Columns.CREATED }; public final static String EXTRA_DOCUMENT_ID = "document_id"; public final static String EXTRA_DOCUMENT_POS = "document_pos"; private ListView mList; private static final int HINT_DIALOG_ID = 2; @Override public String getScreenName() { return "Table of contents"; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_table_of_contents); initToolbar(); setToolbarMessage(R.string.toc_title); getSupportActionBar().setDisplayHomeAsUpEnabled(true); if (getIntent() == null || getIntent().getData() == null) { finish(); return; } mList = (ListView) findViewById(R.id.list); mList.setOnItemClickListener(this); getSupportLoaderManager().initLoader(0, null, this); } @Override protected int getHintDialogId() { return -1; } @Override protected Dialog onCreateDialog(int id, Bundle args) { switch (id) { case HINT_DIALOG_ID: return HintDialog.createDialog(this, R.string.toc_help_title, R.raw.toc_help); } return super.onCreateDialog(id, args); } @Override public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) { final Uri documentUri = getIntent().getData(); final String selection = DocumentContentProvider.Columns.PARENT_ID + "=? OR " + DocumentContentProvider.Columns.ID + "=?"; final String[] args = new String[] { documentUri.getLastPathSegment(), documentUri.getLastPathSegment() }; return new CursorLoader(this, DocumentContentProvider.CONTENT_URI, PROJECTION, selection, args, "created ASC"); } @Override public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) { final SimpleDocumentAdapter adapter = new SimpleDocumentAdapter(this, R.layout.item_list_table_of_contents_element, cursor, new SimpleDocumentAdapter.ViewBinder() { @Override public void bind(View v, SimpleDocumentAdapter.DocumentViewHolder holder, String title, CharSequence formattedDate, String text, int position, final int id) { holder.date.setText(formattedDate); holder.text.setText(title); final String pageNo = String.valueOf(position + 1); holder.mPageNumber.setText(pageNo); } }); mList.setAdapter(adapter); } @Override public void onLoaderReset(Loader<Cursor> arg0) { } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent data = new Intent(); data.putExtra(EXTRA_DOCUMENT_ID, (int) id); data.putExtra(EXTRA_DOCUMENT_POS, position); setResult(RESULT_OK, data); finish(); } }