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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.messagingservice;
     18 
     19 import android.app.Fragment;
     20 import android.content.ComponentName;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.ServiceConnection;
     24 import android.content.SharedPreferences;
     25 import android.os.Bundle;
     26 import android.os.IBinder;
     27 import android.os.Message;
     28 import android.os.Messenger;
     29 import android.os.RemoteException;
     30 import android.text.method.ScrollingMovementMethod;
     31 import android.util.Log;
     32 import android.view.LayoutInflater;
     33 import android.view.View;
     34 import android.view.ViewGroup;
     35 import android.widget.Button;
     36 import android.widget.TextView;
     37 
     38 /**
     39  * The main fragment that shows the buttons and the text view containing the log.
     40  */
     41 public class MessagingFragment extends Fragment implements View.OnClickListener {
     42 
     43     private static final String TAG = MessagingFragment.class.getSimpleName();
     44 
     45     private Button mSendSingleConversation;
     46     private Button mSendTwoConversations;
     47     private Button mSendConversationWithThreeMessages;
     48     private TextView mDataPortView;
     49     private Button mClearLogButton;
     50 
     51     private Messenger mService;
     52     private boolean mBound;
     53 
     54     private final ServiceConnection mConnection = new ServiceConnection() {
     55         @Override
     56         public void onServiceConnected(ComponentName componentName, IBinder service) {
     57             mService = new Messenger(service);
     58             mBound = true;
     59             setButtonsState(true);
     60         }
     61 
     62         @Override
     63         public void onServiceDisconnected(ComponentName componentName) {
     64             mService = null;
     65             mBound = false;
     66             setButtonsState(false);
     67         }
     68     };
     69 
     70     private final SharedPreferences.OnSharedPreferenceChangeListener listener =
     71             new SharedPreferences.OnSharedPreferenceChangeListener() {
     72         @Override
     73         public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
     74             if (MessageLogger.LOG_KEY.equals(key)) {
     75                 mDataPortView.setText(MessageLogger.getAllMessages(getActivity()));
     76             }
     77         }
     78     };
     79 
     80     public MessagingFragment() {
     81     }
     82 
     83     @Override
     84     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     85                              Bundle savedInstanceState) {
     86         View rootView = inflater.inflate(R.layout.fragment_message_me, container, false);
     87 
     88         mSendSingleConversation = (Button) rootView.findViewById(R.id.send_1_conversation);
     89         mSendSingleConversation.setOnClickListener(this);
     90 
     91         mSendTwoConversations = (Button) rootView.findViewById(R.id.send_2_conversations);
     92         mSendTwoConversations.setOnClickListener(this);
     93 
     94         mSendConversationWithThreeMessages =
     95                 (Button) rootView.findViewById(R.id.send_1_conversation_3_messages);
     96         mSendConversationWithThreeMessages.setOnClickListener(this);
     97 
     98         mDataPortView = (TextView) rootView.findViewById(R.id.data_port);
     99         mDataPortView.setMovementMethod(new ScrollingMovementMethod());
    100 
    101         mClearLogButton = (Button) rootView.findViewById(R.id.clear);
    102         mClearLogButton.setOnClickListener(this);
    103 
    104         setButtonsState(false);
    105 
    106         return rootView;
    107     }
    108 
    109     @Override
    110     public void onClick(View view) {
    111         if (view == mSendSingleConversation) {
    112             sendMsg(1, 1);
    113         } else if (view == mSendTwoConversations) {
    114             sendMsg(2, 1);
    115         } else if (view == mSendConversationWithThreeMessages) {
    116             sendMsg(1, 3);
    117         } else if (view == mClearLogButton) {
    118             MessageLogger.clear(getActivity());
    119             mDataPortView.setText(MessageLogger.getAllMessages(getActivity()));
    120         }
    121     }
    122 
    123     @Override
    124     public void onStart() {
    125         super.onStart();
    126         getActivity().bindService(new Intent(getActivity(), MessagingService.class), mConnection,
    127                 Context.BIND_AUTO_CREATE);
    128     }
    129 
    130     @Override
    131     public void onPause() {
    132         super.onPause();
    133         MessageLogger.getPrefs(getActivity()).unregisterOnSharedPreferenceChangeListener(listener);
    134     }
    135 
    136     @Override
    137     public void onResume() {
    138         super.onResume();
    139         mDataPortView.setText(MessageLogger.getAllMessages(getActivity()));
    140         MessageLogger.getPrefs(getActivity()).registerOnSharedPreferenceChangeListener(listener);
    141     }
    142 
    143     @Override
    144     public void onStop() {
    145         super.onStop();
    146         if (mBound) {
    147             getActivity().unbindService(mConnection);
    148             mBound = false;
    149         }
    150     }
    151 
    152     private void sendMsg(int howManyConversations, int messagesPerConversation) {
    153         if (mBound) {
    154             Message msg = Message.obtain(null, MessagingService.MSG_SEND_NOTIFICATION,
    155                     howManyConversations, messagesPerConversation);
    156             try {
    157                 mService.send(msg);
    158             } catch (RemoteException e) {
    159                 Log.e(TAG, "Error sending a message", e);
    160                 MessageLogger.logMessage(getActivity(), "Error occurred while sending a message.");
    161             }
    162         }
    163     }
    164 
    165     private void setButtonsState(boolean enable) {
    166         mSendSingleConversation.setEnabled(enable);
    167         mSendTwoConversations.setEnabled(enable);
    168         mSendConversationWithThreeMessages.setEnabled(enable);
    169     }
    170 }
    171