Java tutorial
/* * Copyright 2013 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-2.0g * * 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 fr.mdk.kisspush; import java.io.IOException; import java.util.ArrayList; import java.util.concurrent.atomic.AtomicInteger; import org.apache.http.Header; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageInfo; import android.content.pm.PackageManager.NameNotFoundException; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import fr.mdk.kisspush.R; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.gcm.GoogleCloudMessaging; import com.loopj.android.http.JsonHttpResponseHandler; /** * Main UI for the demo app. */ public class KISSPush extends ActionBarActivity { public final static String MESSAGE_CHANNEL_NAME = "fr.mdk.kisspush.MESSAGE_CHANNEL_NAME"; public static final String EXTRA_MESSAGE = "message"; public static final String PROPERTY_REG_ID = "registration_id"; private static final String PROPERTY_APP_VERSION = "appVersion"; private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 9000; private KISSPushClient kiss_push_cli = new KISSPushClient(); String SENDER_ID = "1082216905118"; /** * Tag used on log messages. */ static final String TAG = "KISSPush"; ListView mDisplay; GoogleCloudMessaging gcm; AtomicInteger msgId = new AtomicInteger(); Context context; String regid; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mDisplay = (ListView) findViewById(R.id.display); context = getApplicationContext(); final ActionBarActivity self = this; mDisplay.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String channel = ((TextView) view).getText().toString(); // kiss_push_cli.delete_alias(((TextView) view).getText() // .toString(), new JsonHttpResponseHandler() { // @Override // public void onSuccess(int arg0, Header[] arg1, byte[] arg2) { // getAliases(); // } // }); Intent intent = new Intent(self, Channel.class); intent.putExtra(MESSAGE_CHANNEL_NAME, channel); startActivity(intent); } }); if (checkPlayServices()) { gcm = GoogleCloudMessaging.getInstance(this); regid = getRegistrationId(context); if (regid.isEmpty()) { registerInBackground(); } else { this.onRegIdAvailable(regid); } } else { Log.i(TAG, "No valid Google Play Services APK found."); } } public void onRegIdAvailable(String reg_id) { kiss_push_cli.set_reg_id(reg_id); kiss_push_cli.register(); Intent intent = getIntent(); String channel = intent.getStringExtra(KISSPush.MESSAGE_CHANNEL_NAME); if (channel != null) { kiss_push_cli.delete_alias(channel, new JsonHttpResponseHandler() { @Override public void onSuccess(int arg0, Header[] arg1, byte[] arg2) { getAliases(); } }); } else { getAliases(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main_activity_actions, menu); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_add: openAdd(); return true; case R.id.action_help: Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.kisspush.net/")); startActivity(browserIntent); return true; default: return super.onOptionsItemSelected(item); } } protected void openAdd() { final Activity act = this; // get prompts.xml view LayoutInflater layoutInflater = getLayoutInflater(); View promptView = layoutInflater.inflate(R.layout.prompts, null); AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(act); // set prompts.xml to be the layout file of the alertdialog // builder alertDialogBuilder.setView(promptView); final EditText input = (EditText) promptView.findViewById(R.id.userInput); // setup a dialog window alertDialogBuilder.setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // get user input and set it to // result if (input.getText().toString().length() > 0) { kiss_push_cli.add_alias(input.getText().toString(), new JsonHttpResponseHandler() { @Override public void onSuccess(int arg0, Header[] arg1, byte[] arg2) { getAliases(); } }); } } }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); // create an alert dialog AlertDialog alertD = alertDialogBuilder.create(); alertD.show(); } @Override protected void onResume() { super.onResume(); // Check device for Play Services APK. checkPlayServices(); } /** * Check the device to make sure it has the Google Play Services APK. If it * doesn't, display a dialog that allows users to download the APK from the * Google Play Store or enable it in the device's system settings. */ private boolean checkPlayServices() { int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); if (resultCode != ConnectionResult.SUCCESS) { if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) { GooglePlayServicesUtil.getErrorDialog(resultCode, this, PLAY_SERVICES_RESOLUTION_REQUEST).show(); } else { Log.i(TAG, "This device is not supported."); finish(); } return false; } return true; } /** * Stores the registration ID and the app versionCode in the application's * {@code SharedPreferences}. * * @param context * application's context. * @param regId * registration ID */ private void storeRegistrationId(Context context, String regId) { final SharedPreferences prefs = getGcmPreferences(context); int appVersion = getAppVersion(context); Log.i(TAG, "Saving regId on app version " + appVersion); SharedPreferences.Editor editor = prefs.edit(); editor.putString(PROPERTY_REG_ID, regId); editor.putInt(PROPERTY_APP_VERSION, appVersion); editor.commit(); } /** * Gets the current registration ID for application on GCM service, if there * is one. * <p> * If result is empty, the app needs to register. * * @return registration ID, or empty string if there is no existing * registration ID. */ private String getRegistrationId(Context context) { final SharedPreferences prefs = getGcmPreferences(context); String registrationId = prefs.getString(PROPERTY_REG_ID, ""); if (registrationId.isEmpty()) { Log.i(TAG, "Registration not found."); return ""; } // Check if app was updated; if so, it must clear the registration ID // since the existing regID is not guaranteed to work with the new // app version. int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE); int currentVersion = getAppVersion(context); if (registeredVersion != currentVersion) { Log.i(TAG, "App version changed."); return ""; } Log.i(TAG, "Registration ID found in SharedPreferences: " + registrationId); return registrationId; } /** * Registers the application with GCM servers asynchronously. * <p> * Stores the registration ID and the app versionCode in the application's * shared preferences. */ private void registerInBackground() { final KISSPush self = this; new AsyncTask<Void, Void, String>() { @Override protected String doInBackground(Void... params) { String msg = ""; try { if (gcm == null) { gcm = GoogleCloudMessaging.getInstance(context); } regid = gcm.register(SENDER_ID); msg = "Device registered, registration ID=" + regid; self.onRegIdAvailable(regid); storeRegistrationId(context, regid); } catch (IOException ex) { msg = "Error :" + ex.getMessage(); // If there is an error, don't just keep trying to register. // Require the useor other views support the // swipe-to-dismissr to click a button again, or perform // exponential back-off. } return msg; } @Override protected void onPostExecute(String msg) { } }.execute(null, null, null); } private void getAliases() { kiss_push_cli.get_alias(new KISSPushClient.Callback<ArrayList<String>>() { @Override public void callback(ArrayList<String> t) { ArrayAdapter<String> adapter = new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, t); mDisplay.setAdapter(adapter); } }); } @Override protected void onDestroy() { super.onDestroy(); } /** * @return Application's version code from the {@code PackageManager}. */ private static int getAppVersion(Context context) { try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); return packageInfo.versionCode; } catch (NameNotFoundException e) { // should never happen throw new RuntimeException("Could not get package name: " + e); } } /** * @return Application's {@code SharedPreferences}. */ private SharedPreferences getGcmPreferences(Context context) { // This sample app persists the registration ID in shared preferences, // but // how you store the regID in your app is up to you. return getSharedPreferences(KISSPush.class.getSimpleName(), Context.MODE_PRIVATE); } }