shreckye.scu.youth.HomepageFragment.java Source code

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Here is the source code for shreckye.scu.youth.HomepageFragment.java

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/*
 * Copyright 2017 Yongshun Ye
 *
 * 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 shreckye.scu.youth;

import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
 * Created by Yongshun Ye on 5/10/2017.
 */
public class HomepageFragment extends Fragment {
    public final static String HOMEPAGE_URL = "http://tuanwei.scu.edu.cn";

    WebView homepageWebView;

    public HomepageFragment() {
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.homepage_menu, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.action_refresh:
            refreshAsync();
            return true;
        default:
            return false;
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_homepage, container, false);

        final SwipeRefreshLayout swipeRefreshLayout = (SwipeRefreshLayout) view
                .findViewById(R.id.swipe_refresh_layout);
        AppUtil.setupSwipeRefreshLayoutColors(swipeRefreshLayout);

        homepageWebView = (WebView) view.findViewById(R.id.homepage_web_view);
        WebSettings webSettings = homepageWebView.getSettings();
        webSettings.setLoadWithOverviewMode(true);
        webSettings.setUseWideViewPort(true);
        webSettings.setJavaScriptEnabled(true);

        homepageWebView.loadUrl(HOMEPAGE_URL);
        homepageWebView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                swipeRefreshLayout.setRefreshing(true);
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                swipeRefreshLayout.setRefreshing(false);
            }
        });

        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                refreshAsync();
            }
        });

        FloatingActionButton fab = (FloatingActionButton) view.findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AppUtil.openWebPageAndShowSnackbarIfFail(HomepageFragment.this, HOMEPAGE_URL, getView());
            }
        });

        return view;
    }

    void refreshAsync() {
        homepageWebView.loadUrl(HOMEPAGE_URL);
    }
}