Java tutorial
/* O * Copyright 2012 Google Inc. * * 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 br.ufg.iptsp.app.variloid.util; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.text.Html; import android.text.SpannableString; import android.text.SpannableStringBuilder; import android.text.method.LinkMovementMethod; import android.text.style.ClickableSpan; import android.view.LayoutInflater; import android.view.View; import android.widget.TextView; import br.ufg.iptsp.app.variloid.R; /** * This is a set of helper methods for showing contextual help information in the app. */ public class HelpUtils { public static void showAbout(FragmentActivity activity) { FragmentManager fm = activity.getSupportFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); Fragment prev = fm.findFragmentByTag("dialog_about"); if (prev != null) { ft.remove(prev); } ft.addToBackStack(null); new AboutDialog().show(ft, "dialog_about"); } public static class AboutDialog extends DialogFragment { private static final String VERSION_UNAVAILABLE = "N/A"; public AboutDialog() { } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Get app version PackageManager pm = getActivity().getPackageManager(); String packageName = getActivity().getPackageName(); String versionName; try { PackageInfo info = pm.getPackageInfo(packageName, 0); versionName = info.versionName; } catch (PackageManager.NameNotFoundException e) { versionName = VERSION_UNAVAILABLE; } // Build the about body view and append the link to see OSS licenses SpannableStringBuilder aboutBody = new SpannableStringBuilder(); aboutBody.append(Html.fromHtml(getString(R.string.string_corpo_sobre, versionName))); // SpannableString licensesLink = new SpannableString(getString(R.string.sobre_empresa)); // licensesLink.setSpan(new ClickableSpan() { // @Override // public void onClick(View view) { // HelpUtils.showOpenSourceLicenses(getActivity()); // } // }, 0, licensesLink.length(), 0); // aboutBody.append("\n\n"); // aboutBody.append(licensesLink); SpannableString eulaLink = new SpannableString(getString(R.string.string_sobre_aplicativo)); eulaLink.setSpan(new ClickableSpan() { @Override public void onClick(View view) { HelpUtils.showEula(getActivity()); } }, 0, eulaLink.length(), 0); aboutBody.append("\n"); aboutBody.append(eulaLink); aboutBody.append("\n"); aboutBody.append(Html.fromHtml(getString(R.string.string_sobre_empresa))); LayoutInflater layoutInflater = (LayoutInflater) getActivity() .getSystemService(Context.LAYOUT_INFLATER_SERVICE); TextView aboutBodyView = (TextView) layoutInflater.inflate(R.layout.dialog_about, null); aboutBodyView.setText(aboutBody); aboutBodyView.setMovementMethod(new LinkMovementMethod()); return new AlertDialog.Builder(getActivity()).setTitle(R.string.string_title_about) .setView(aboutBodyView) .setPositiveButton(R.string.btn_ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { dialog.dismiss(); } }).create(); } } // public static void showOpenSourceLicenses(FragmentActivity activity) { // FragmentManager fm = activity.getSupportFragmentManager(); // FragmentTransaction ft = fm.beginTransaction(); // Fragment prev = fm.findFragmentByTag("dialog_licenses"); // if (prev != null) { // ft.remove(prev); // } // ft.addToBackStack(null); // // new OpenSourceLicensesDialog().show(ft, "dialog_licenses"); // } // public static class OpenSourceLicensesDialog extends DialogFragment { // // public OpenSourceLicensesDialog() { // } // // @Override // public Dialog onCreateDialog(Bundle savedInstanceState) { // WebView webView = new WebView(getActivity()); // webView.loadUrl("file:///android_asset/licenses.html"); // // return new AlertDialog.Builder(getActivity()) // .setTitle(R.string.sobre_empresa) // .setView(webView) // .setPositiveButton(R.string.ok, // new DialogInterface.OnClickListener() { // public void onClick(DialogInterface dialog, int whichButton) { // dialog.dismiss(); // } // } // ) // .create(); // } // } public static void showEula(FragmentActivity activity) { FragmentManager fm = activity.getSupportFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); Fragment prev = fm.findFragmentByTag("dialog_eula"); if (prev != null) { ft.remove(prev); } ft.addToBackStack(null); new EulaDialog().show(ft, "dialog_eula"); } public static class EulaDialog extends DialogFragment { public EulaDialog() { } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { int padding = getResources().getDimensionPixelSize(R.dimen.content_padding_normal); TextView eulaTextView = new TextView(getActivity()); eulaTextView.setText(Html.fromHtml(getString(R.string.sobre_text))); eulaTextView.setMovementMethod(LinkMovementMethod.getInstance()); eulaTextView.setPadding(padding, padding, padding, padding); return new AlertDialog.Builder(getActivity()).setTitle(R.string.string_sobre_aplicativo) .setView(eulaTextView) .setPositiveButton(R.string.btn_ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { dialog.dismiss(); } }).create(); } } }