Java tutorial
/* * Copyright (C) 2015 Jasper van Riet * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.jaspervanriet.huntingthatproduct.Activities; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.content.Intent; import android.net.Uri; import android.net.http.SslError; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.support.v7.widget.ShareActionProvider; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuItem; import android.view.ViewTreeObserver; import android.view.animation.AccelerateInterpolator; import android.webkit.SslErrorHandler; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.Toast; import com.jaspervanriet.huntingthatproduct.Classes.Product; import com.jaspervanriet.huntingthatproduct.R; import com.jaspervanriet.huntingthatproduct.Utils.Utils; import butterknife.ButterKnife; import butterknife.InjectView; import io.realm.Realm; public class WebActivity extends ActionBarActivity { public static final String ARG_DRAWING_START_LOCATION = "arg_drawing_start_location"; private static final int ANIM_LAYOUT_INTRO_DURATION = 250; private static final String URL_PLAY_STORE_SCHEME = "https://play.google" + ".com/store/apps/details?"; private static final String URL_DEVICE_PLAY_STORE_SCHEME = "market://details?"; @InjectView(R.id.toolbar) Toolbar mToolBar; @InjectView(R.id.web_webview) WebView mWebView; private Product mProduct; private int mDrawingStartLocation; private boolean mBackPressed = false; private Realm mRealm; private String mProductTitle; private String mProductUrl; private void openInBrowser() { Intent intent = new Intent(Intent.ACTION_VIEW).setData(Uri.parse(mProductUrl)); startActivity(intent); } private Intent getShareIntent() { Intent i = new Intent(Intent.ACTION_SEND); i.setType("text/plain"); i.putExtra(Intent.EXTRA_SUBJECT, mProductTitle); i.putExtra(Intent.EXTRA_TEXT, mProductUrl); return i; } private void goBack() { mBackPressed = true; mWebView.animate().translationY(Utils.getScreenHeight(this)).setDuration(200) .setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { WebActivity.super.onBackPressed(); overridePendingTransition(0, 0); finish(); } }).start(); } private void setupToolbar() { setSupportActionBar(mToolBar); ActionBar actionBar = getSupportActionBar(); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setTitle(getString(R.string.actionbar_loading)); actionBar.setElevation(5); } private void setupWebView() { mWebView.setWebViewClient(new WebViewClient() { @Override public void onLoadResource(WebView view, String url) { if (isPlayStoreLink(url)) { redirectToPlayStore(url); view.stopLoading(); } } @Override public void onPageFinished(WebView view, String url) { getSupportActionBar().setTitle(mProductTitle); if (isPlayStoreLink(url)) { redirectToPlayStore(url); } } @Override public void onReceivedSslError(WebView view, @NonNull SslErrorHandler handler, SslError error) { Toast.makeText(WebActivity.this, getString(R.string.error_ssl), Toast.LENGTH_LONG).show(); } }); mWebView.loadUrl(mProductUrl); mWebView.getSettings().setBuiltInZoomControls(true); mWebView.getSettings().setDisplayZoomControls(false); mWebView.getSettings().setJavaScriptEnabled(true); } private void redirectToPlayStore(String url) { url.replace(URL_PLAY_STORE_SCHEME, URL_DEVICE_PLAY_STORE_SCHEME); Intent intent = new Intent(Intent.ACTION_VIEW).setData(Uri.parse(url)); startActivity(intent); } private boolean isPlayStoreLink(String url) { return url.contains(URL_PLAY_STORE_SCHEME); } /* * Intro animations */ private void expandAnimation(Bundle savedInstanceState) { mDrawingStartLocation = getIntent().getIntExtra(ARG_DRAWING_START_LOCATION, 0); if (savedInstanceState == null) { mWebView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() { @Override public boolean onPreDraw() { mWebView.getViewTreeObserver().removeOnPreDrawListener(this); startIntroAnimation(); return true; } }); } } private void startIntroAnimation() { mWebView.setScaleY(0.1f); mWebView.setPivotY(mDrawingStartLocation); mWebView.animate().scaleY(1).setDuration(ANIM_LAYOUT_INTRO_DURATION) .setInterpolator(new AccelerateInterpolator()).start(); } /* * App lifecycle */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_web); ButterKnife.inject(this); int mProductId = getIntent().getIntExtra("productId", 0); if (getIntent().getBooleanExtra("collection", false)) { mProductTitle = getIntent().getStringExtra("productTitle"); mProductUrl = getIntent().getStringExtra("productUrl"); } else { mRealm = Realm.getInstance(this); mProduct = Product.findProductById(mRealm, mProductId); mProductTitle = mProduct.getTitle(); mProductUrl = mProduct.getProductUrl(); } expandAnimation(savedInstanceState); setupToolbar(); setupWebView(); } @Override public void onDestroy() { super.onDestroy(); if (mRealm != null) { mRealm.close(); } } /* * UI boilerplate */ @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.web_menu, menu); MenuItem item = menu.findItem(R.id.menu_web_share); ShareActionProvider shareActionProvider = new ShareActionProvider(this); shareActionProvider.setShareIntent(getShareIntent()); MenuItemCompat.setActionProvider(item, shareActionProvider); return true; } @Override public void onBackPressed() { if (!mBackPressed) { goBack(); } } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); switch (itemId) { case android.R.id.home: if (!mBackPressed) { goBack(); } return true; case R.id.menu_browser: openInBrowser(); return true; default: return false; } } }