Java tutorial
/* * Copyright (C) 2010 The Android Open Source Project * * 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.epam.training.taskmanager; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTransaction; import android.view.View; import com.epam.training.taskmanager.fragments.DetailsFragment; import com.epam.training.taskmanager.fragments.TitlesFragment; /** * Demonstration of using fragments to implement different activity layouts. * This sample provides a different layout (and activity flow) when run in * landscape. */ public class FragmentLayoutSupportActivity extends FragmentActivity implements TitlesFragment.Callbacks { boolean mDualPane; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_layout_support); // Check to see if we have a frame in which to embed the details // fragment directly in the containing UI. View detailsFrame = findViewById(R.id.details); mDualPane = detailsFrame != null && detailsFrame.getVisibility() == View.VISIBLE; } @Override public void onShowDetails(int index) { if (mDualPane) { // We can display everything in-place with fragments, so update // the list to highlight the selected item and show the data. // Check what fragment is currently shown, replace if needed. DetailsFragment details = (DetailsFragment) getSupportFragmentManager().findFragmentById(R.id.details); if (details == null || details.getShownIndex() != index) { // Make new fragment to show this selection. details = DetailsFragment.newInstance(index); // Execute a transaction, replacing any existing fragment // with this one inside the frame. getSupportFragmentManager().beginTransaction().replace(R.id.details, details) .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE).commit(); } } else { // Otherwise we need to launch a new activity to display // the dialog fragment with selected text. Intent intent = new Intent(); intent.setClass(this, DetailsFragmentActivity.class); intent.putExtra("index", index); startActivity(intent); } } @Override public boolean isDualPane() { return mDualPane; } }