Java tutorial
/* * Copyright 2011 The Android Open Source Project * * 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 dev.ronlemire.network; import com.actionbarsherlock.app.SherlockFragmentActivity; import dev.ronlemire.network.R; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.res.Configuration; import android.graphics.Color; import android.os.Bundle; import android.util.Log; import android.widget.TextView; //import android.widget.Toast; public class MainActivity extends SherlockFragmentActivity { public static final String TAG = "MainActivity"; private int listItemSelected = 0; private TextView messageTextView; private ListReceiver listReceiver; private IntentFilter listFilter; private MessageFromSmsReceiver smsReceiver; private MessageFromEmailReceiver emailReceiver; private MessageFromHttpReceiver httpReceiver; private IntentFilter smsFilter; private IntentFilter emailFilter; private IntentFilter httpFilter; String[] titlesArray; @Override public void onCreate(Bundle savedInstanceState) { Log.v(TAG, "in MainActivity onCreate"); super.onCreate(savedInstanceState); FragmentManager.enableDebugLogging(true); setContentView(R.layout.main); messageTextView = (TextView) this.findViewById(R.id.etMessages); messageTextView.setEnabled(false); messageTextView.setTextColor(Color.parseColor("#FFFFFF")); // white listReceiver = new ListReceiver(); listFilter = new IntentFilter(ListViewFragment.LIST_FRAGMENT_BROADCAST_INTENT); smsReceiver = new MessageFromSmsReceiver(); smsFilter = new IntentFilter(SmsFragment.SMS_FRAGMENT_BROADCAST_INTENT); emailReceiver = new MessageFromEmailReceiver(); emailFilter = new IntentFilter(EmailFragment.EMAIL_FRAGMENT_BROADCAST_INTENT); httpReceiver = new MessageFromHttpReceiver(); httpFilter = new IntentFilter(HttpFragment.HTTP_FRAGMENT_BROADCAST_INTENT); if (savedInstanceState != null) { messageTextView.setText(savedInstanceState.getString("message")); } registerReceiver(listReceiver, listFilter); registerReceiver(smsReceiver, smsFilter); registerReceiver(emailReceiver, emailFilter); registerReceiver(httpReceiver, httpFilter); titlesArray = getResources().getStringArray(R.array.list_titles); } // ***************************************************************************** // Action Bar // ***************************************************************************** @Override public boolean onCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) { super.onCreateOptionsMenu(menu); this.getSupportMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(com.actionbarsherlock.view.MenuItem item) { switch (item.getItemId()) { case android.R.id.home: refreshList(0); // Toast.makeText(this, "Tapped home", Toast.LENGTH_SHORT).show(); break; case R.id.menu_refresh: refreshList(0); // Toast.makeText(this, "Fake refreshing...", // Toast.LENGTH_SHORT).show(); break; } return super.onOptionsItemSelected(item); } private void refreshList(int index) { ListViewFragment lf = (ListViewFragment) getSupportFragmentManager().findFragmentById(R.id.listOptions); lf.refresh(index); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); } @Override public void onResume() { super.onResume(); } @Override protected void onPause() { super.onPause(); } @Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); } @Override protected void onDestroy() { super.onDestroy(); unregisterReceiver(listReceiver); unregisterReceiver(smsReceiver); unregisterReceiver(emailReceiver); unregisterReceiver(httpReceiver); } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("message", messageTextView.getText().toString()); } @Override protected void onRestoreInstanceState(Bundle inState) { super.onRestoreInstanceState(inState); messageTextView.setText(inState.getSerializable("message").toString()); } // ***************************************************************************** // BroadcastReceivers // ***************************************************************************** class ListReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // String ron = intent.getStringExtra("name"); // Integer age = intent.getIntExtra("age", 0); // Bundle extras = intent.getExtras(); // String ron = extras.getString("name"); // Integer age = extras.getInt("age"); Bundle extras = intent.getExtras(); listItemSelected = extras.getInt(ListViewFragment.LIST_ITEM_SELECTED); messageTextView.setText(titlesArray[listItemSelected]); showDetails(listItemSelected); } } class MessageFromSmsReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(SmsFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromEmailReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(EmailFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromHttpReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(HttpFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } // ***************************************************************************** // Helper methods // ***************************************************************************** private boolean isMultiPane() { return getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE; } // private boolean isTablet() { // Display display = getWindowManager().getDefaultDisplay(); // DisplayMetrics displayMetrics = new DisplayMetrics(); // display.getMetrics(displayMetrics); // // int width = displayMetrics.widthPixels / displayMetrics.densityDpi; // int height = displayMetrics.heightPixels / displayMetrics.densityDpi; // // double screenDiagonal = Math.sqrt(width * width + height * height); // return (screenDiagonal >= 8.5); // } private void showDetails(int index) { Log.v(TAG, "in MainActivity showDetails(" + index + ")"); if (isMultiPane()) { // Check what fragment is shown, replace if needed. DetailsFragment df = (DetailsFragment) getSupportFragmentManager().findFragmentById(R.id.details); if (df == null || df.getShownIndex() != index) { // Make new fragment to show this selection. df = DetailsFragment.newInstance(index); // Execute a transaction, replacing any existing // fragment inside the frame with the new one. Log.v(TAG, "about to run FragmentTransaction..."); FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); // ft.setCustomAnimations(R.animator.fragment_open_enter, // R.animator.fragment_open_exit); // ft.setCustomAnimations(R.animator.bounce_in_down, // R.animator.slide_out_right); // ft.setCustomAnimations(R.animator.fade_in, // R.animator.fade_out); // ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); ft.replace(R.id.details, df); // ft.addToBackStack(TAG); ft.commit(); getSupportFragmentManager().executePendingTransactions(); } } else { // Otherwise we need to launch a new activity to display // the dialog fragment with selected text. Intent intent = new Intent(); intent.setClass(this, DetailsActivity.class); intent.putExtra("index", index); startActivity(intent); } } }