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.dialogs; import dev.ronlemire.dialogs.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.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.widget.TextView; //import android.widget.Toast; public class MainActivity extends ActionBarFragmentActivity { public static final String TAG = "MainActivity"; private int listItemSelected = 0; private TextView messageTextView; private ListReceiver listReceiver; private IntentFilter listFilter; private MessageFromSingleChoiceDialogReceiver singleChoiceDialogReceiver; private MessageFromMultiChoiceDialogReceiver multiChoiceDialogReceiver; private MessageFromProgressDialogReceiver progressDialogReceiver; private MessageFromFloatingDialogReceiver floatingDialogReceiver; private MessageFromHideTitleReceiver hideTitleReceiver; private MessageFromToastReceiver toastReceiver; private MessageFromAlertDialogReceiver alertDialogReceiver; private MessageFromConfirmationDialogReceiver confirmationDialogReceiver; private MessageFromPromptDialogReceiver promptDialogReceiver; private IntentFilter singleChoiceDialogFilter; private IntentFilter multiChoiceDialogFilter; private IntentFilter progressDialogFilter; private IntentFilter floatingDialogFilter; private IntentFilter hideTitleFilter; private IntentFilter toastFilter; private IntentFilter alertDialogFilter; private IntentFilter confirmationDialogFilter; private IntentFilter promptDialogFilter; 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); singleChoiceDialogReceiver = new MessageFromSingleChoiceDialogReceiver(); singleChoiceDialogFilter = new IntentFilter( SingleChoiceDialogFragment.SINGLE_CHOICE_DIALOG_BROADCAST_INTENT); multiChoiceDialogReceiver = new MessageFromMultiChoiceDialogReceiver(); multiChoiceDialogFilter = new IntentFilter(MultiChoiceDialogFragment.MULTI_CHOICE_DIALOG_BROADCAST_INTENT); progressDialogReceiver = new MessageFromProgressDialogReceiver(); progressDialogFilter = new IntentFilter(ProgressDialogFragment.PROGRESS_DIALOG_BROADCAST_INTENT); floatingDialogReceiver = new MessageFromFloatingDialogReceiver(); floatingDialogFilter = new IntentFilter(FloatingDialogFragment.FLOATING_DIALOG_BROADCAST_INTENT); hideTitleReceiver = new MessageFromHideTitleReceiver(); hideTitleFilter = new IntentFilter(HideTitleFragment.HIDE_TITLE_BROADCAST_INTENT); toastReceiver = new MessageFromToastReceiver(); toastFilter = new IntentFilter(ToastFragment.TOAST_BROADCAST_INTENT); alertDialogReceiver = new MessageFromAlertDialogReceiver(); alertDialogFilter = new IntentFilter(AlertDialogFragment.ALERT_DIALOG_BROADCAST_INTENT); confirmationDialogReceiver = new MessageFromConfirmationDialogReceiver(); confirmationDialogFilter = new IntentFilter( ConfirmationDialogFragment.CONFIRMATION_DIALOG_BROADCAST_INTENT); promptDialogReceiver = new MessageFromPromptDialogReceiver(); promptDialogFilter = new IntentFilter(PromptDialogFragment.PROMPT_DIALOG_BROADCAST_INTENT); if (savedInstanceState != null) { messageTextView.setText(savedInstanceState.getString("message")); } registerReceiver(listReceiver, listFilter); registerReceiver(singleChoiceDialogReceiver, singleChoiceDialogFilter); registerReceiver(multiChoiceDialogReceiver, multiChoiceDialogFilter); registerReceiver(progressDialogReceiver, progressDialogFilter); registerReceiver(floatingDialogReceiver, floatingDialogFilter); registerReceiver(hideTitleReceiver, hideTitleFilter); registerReceiver(toastReceiver, toastFilter); registerReceiver(alertDialogReceiver, alertDialogFilter); registerReceiver(confirmationDialogReceiver, confirmationDialogFilter); registerReceiver(promptDialogReceiver, promptDialogFilter); titlesArray = getResources().getStringArray(R.array.list_titles); } // ***************************************************************************** // Action Bar // ***************************************************************************** @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater menuInflater = getMenuInflater(); menuInflater.inflate(R.menu.main, menu); // Calling super after populating the menu is necessary here to ensure // that the action bar helpers have a chance to handle this event. return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(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(singleChoiceDialogReceiver); unregisterReceiver(multiChoiceDialogReceiver); unregisterReceiver(progressDialogReceiver); unregisterReceiver(floatingDialogReceiver); unregisterReceiver(hideTitleReceiver); unregisterReceiver(toastReceiver); unregisterReceiver(alertDialogReceiver); unregisterReceiver(confirmationDialogReceiver); unregisterReceiver(promptDialogReceiver); } @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 MessageFromSingleChoiceDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(SingleChoiceDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromMultiChoiceDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(MultiChoiceDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromProgressDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(ProgressDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromFloatingDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(FloatingDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromHideTitleReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(HideTitleFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromToastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(ToastFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromAlertDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(AlertDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromConfirmationDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(ConfirmationDialogFragment.OUT_MESSAGE_KEY); messageTextView.setText(message); } } class MessageFromPromptDialogReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String message = (String) intent.getSerializableExtra(PromptDialogFragment.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); } } }