Java tutorial
/* * Copyright 2013 Liquid Labs 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 ca.liquidlabs.android.speedtestvisualizer.activities; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.NavUtils; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import ca.liquidlabs.android.speedtestvisualizer.R; import com.google.analytics.tracking.android.EasyTracker; import com.google.android.gms.common.GooglePlayServicesUtil; public class AboutAppActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_about_app); // Show the Up button in the action bar. setupActionBar(); /* setup the Attribution Text for Google Maps - as per license agreement */ // TextView attrText = (TextView) // super.findViewById(R.id.txt_about_info); // attrText.setText(); initListeners(); } /** * Initializes / Attaches Event Listeners to Buttons */ private void initListeners() { Button btn = (Button) super.findViewById(R.id.btn_license_info); final AboutAppActivity $this = AboutAppActivity.this; btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub new AlertDialog.Builder($this).setTitle($this.getString(R.string.lbl_license_info)) .setMessage(GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo($this)) .setNegativeButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // Do nothing. } }).show(); } }); btn = (Button) super.findViewById(R.id.btn_google_play_apps); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String googlePlayLink = $this.getString(R.string.google_play_query); $this.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(googlePlayLink))); } }); /* On Tap of the TextView, simply redirect user to the Github Repo */ TextView txtView = (TextView) super.findViewById(R.id.txt_about_info); txtView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse($this.getString(R.string.github_url))); $this.startActivity(browserIntent); } }); txtView = (TextView) super.findViewById(R.id.txt_author_info); txtView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse($this.getString(R.string.author_url))); $this.startActivity(browserIntent); } }); } @Override public void onStart() { super.onStart(); // Tracks activity view using analytics. EasyTracker.getInstance().activityStart(this); } @Override public void onStop() { super.onStop(); // Tracks activity view using analytics. EasyTracker.getInstance().activityStop(this); } @Override protected void onPause() { // Override the activity transition animation overridePendingTransition(android.R.anim.slide_in_left, android.R.anim.slide_out_right); super.onPause(); } /** * Set up the {@link android.app.ActionBar}. */ private void setupActionBar() { getActionBar().setDisplayHomeAsUpEnabled(true); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.about_app, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_github_project: // open github project page Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.github_url))); startActivity(browserIntent); break; case android.R.id.home: // This ID represents the Home or Up button. In the case of this // activity, the Up button is shown. Use NavUtils to allow users // to navigate up one level in the application structure. For // more details, see the Navigation pattern on Android Design: // // http://developer.android.com/design/patterns/navigation.html#up-vs-back // NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } }