Exercícios de Computação

<activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> <meta-data android:name="android.app.default_searchable" android:value=".SearchActivity" /> </intent-filter> </activity> <activity android:name=".SearchActivity" > <intent-filter> <action android:name="android.intent.action.SEARCH" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> <meta-data android:name="android.app.searchable" android:resource="@xml/searchable" /> </activity> MainActivity tem barra de ferramentas com widget de pesquisa. @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.search, menu); SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView(); ComponentName component = new ComponentName(this, SearchActivity.class); searchView.setSearchableInfo(searchManager.getSearchableInfo(component)); searchView.setSubmitButtonEnabled(true); return true; } E, finalmente, SearchActivity public class SearchActivity extends AppCompatActivity { TextView tvSearch; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_search); tvSearch = (TextView) findViewById(R.id.tvSearchQuery); handleIntent(getIntent()); } @Override protected void onNewIntent(Intent intent) { setIntent(intent); handleIntent(intent); } private void handleIntent(Intent intent) { if (Intent.ACTION_SEARCH.equals(intent.getAction())) { String query = intent.getStringExtra(SearchManager.QUERY); doMySearch(query); } } private void doMySearch(String query) { tvSearch.setText(query); } } Fiz esse código olhando o android developer, mas não consigo definir o id.tvSearchQuery para pesquisar na Book_Activity que tem o getExtras input da da Arraylist de ebooks da Main_Activity, é simples já fiz o menu inflater só que retorna somente o que eu digito na caixa de pesquisa, quem responder poderá ser meu tuto no futuro, estou avançando muito em programação ou se precisar de troca nas matérias que leciono.