Android开发实战《智慧北京》——7.项目拓展
2024-07-04 05:15:53
文章目录
- 1.极光推送
- 1.1 基本使用
- 1.2 极光推送的高级使用
- 1.3 推送原理介绍
- 2.科大讯飞
- 2.1 语音听写
- 2.2 语音合成
- 2.3 聊天机器人：布局搭建
- 2.4 聊天机器人：数据填充
- 2.5 聊天机器人：语音数据解析 & 展示提问对象
- 2.6 聊天机器人：展示回答对象 & 朗读回答
- 3.友盟统计
- 3.1 介绍 & SDK使用
- 3.2 友盟指数
- 4.ZXing
- 5.DynamicGrid
1.极光推送
1.1 基本使用
消息推送，类似于社交工具中QQ、微信中的聊天功能，即消息之间的传输，其原理图如下所示：
消息推送的主要特点，是指客户端被动接收服务端的消息，即使客户端和服务端没有相连。而消息推送的应用也不局限于聊天功能，还应用在广告推送、私信推送等
要实现消息推送的技术，就需要引入一个第三方的框架：JPush（极光推送），而JPush的使用，可以参考此篇集成文档：http://docs.jiguang.cn/jpush/client/Android/android_guide/，这里不再详述。
而想用快速创建demo，则可参考http://docs.jiguang.cn/jpush/client/Android/android_3m/来实现，这里不再详述
1.2 极光推送的高级使用
想要进行极光推送的高级使用，可参考http://docs.jiguang.cn/jpush/client/Android/android_api/，这里不再详述
1.3 推送原理介绍
在客户端和服务端之间，一般进行一次数据的发送和接收后就会断开相互的连接。然而，在消息推送中，这样的连接在数据传输的过程中不会断开，则称为长连接
在Http1.1之后，支持长连接
xmpp协议，专门适用于消息推送，此种协议更加精简，没有过多冗余的数据
socket，套接字，网络底层实现
TCP、UDP，传输协议
心跳包：客户端每隔一段时间（比如说30秒）向服务器发送一段极短的数据，来证明自己还“活着”
2.科大讯飞
2.1 语音听写
要实现这个功能，同样需要借助一个第三方框架——科大讯飞语音云，官方网站为：https://www.xfyun.cn/
在这里要实现语音听写的功能，网站为：https://www.xfyun.cn/services/voicedictation
这里不再详述
2.2 语音合成
在这里要实现语音合成的功能，网站为：https://www.xfyun.cn/services/online_tts
这里不再详述
2.3 聊天机器人：布局搭建
通过科大讯飞的这些api，可以实现一个简单的聊天机器人的应用
聊天菜单可用ListView来实现，而每一条聊天记录可用item来实现
- 新建一个项目，导入科大讯飞的jar包，然后修改activity_main.xml，在此之前导入相关图片资源，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><ListViewandroid:id="@+id/lv_list"android:layout_width="match_parent"android:layout_height="0dp"android:divider="@null"android:layout_weight="1"/><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:background="@drawable/bottom_bar"><Buttonandroid:id="@+id/button1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@drawable/btn_selector"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:onClick="startVoice"android:text="点击开始语音识别"/></RelativeLayout>
</LinearLayout>
- 在drawable目录下建立按钮的状态选择器文件btn_selector.xml，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:state_pressed="true" android:drawable="@drawable/btn_voice_search_pressed"/><item android:drawable="@drawable/btn_voice_search_normal"/></selector>
2.4 聊天机器人：数据填充
前面将布局搭建好了，接下来就是为ListView填充数据
- 修改MainActivity，获取ListView的实例，并且注册适配器，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;public class MainActivity extends AppCompatActivity {private ListView lvList;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);lvList = findViewById(R.id.lv_list);}public void startVoice(View view){}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return 0;}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {return null;}}
}
- 建立ListView的子布局文件list_item.xml，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"><TextViewandroid:id="@+id/tv_ask"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_alignParentTop="true"android:background="@drawable/asker_bubble"android:gravity="center"android:paddingLeft="10dp"android:paddingRight="15dp"android:textColor="#000"android:textSize="16sp"android:text="提问"/><LinearLayoutandroid:id="@+id/ll_answer"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="5dp"android:paddingLeft="15dp"android:paddingRight="10dp"android:layout_below="@id/tv_ask"android:background="@drawable/answer_bubble"android:orientation="vertical"><TextViewandroid:id="@+id/tv_answer"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:textColor="#000"android:textSize="16sp"android:text="回答"/><ImageViewandroid:id="@+id/iv_answer"android:layout_width="wrap_content"android:layout_height="wrap_content"android:visibility="gone"android:src="@drawable/p1"/></LinearLayout>
</RelativeLayout>
- 修改MainActivity，引用刚刚创建好的布局，并创建内部类ViewHolder，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;public class MainActivity extends AppCompatActivity {private ListView lvList;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);lvList = findViewById(R.id.lv_list);}public void startVoice(View view){}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return 0;}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null){convertView = View.inflate(getApplicationContext(),R.layout.list_item,null);holder = new ViewHolder();holder.tvAsk = convertView.findViewById(R.id.tv_ask);holder.tvAnswer = convertView.findViewById(R.id.tv_answer);holder.llAnswer = convertView.findViewById(R.id.ll_answer);holder.ivAnswer = convertView.findViewById(R.id.iv_answer);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}return convertView;}}static class ViewHolder{public TextView tvAsk;public TextView tvAnswer;public LinearLayout llAnswer;public ImageView ivAnswer;}
}
- 建立TalkBean类，作为每句对话的实体类对象，代码如下：
package com.example.chatrobot;public class TalkBean {public String content;public boolean isAsk;public int imageId = -1;public TalkBean(String content, boolean isAsk, int imageId) {this.content = content;this.isAsk = isAsk;this.imageId = imageId;}
}
- 修改MainActivity，用ArrayList来存储刚刚创建好的对象，并且进行相应调用，将ListView和Adapter进行匹配，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;import java.util.ArrayList;public class MainActivity extends AppCompatActivity {private ListView lvList;private ArrayList<TalkBean> mTalkList = new ArrayList<>();private ChatAdapter mAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);lvList = findViewById(R.id.lv_list);mAdapter = new ChatAdapter();lvList.setAdapter(mAdapter);}public void startVoice(View view){}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return mTalkList.size();}@Overridepublic TalkBean getItem(int position) {return mTalkList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null){convertView = View.inflate(getApplicationContext(),R.layout.list_item,null);holder = new ViewHolder();holder.tvAsk = convertView.findViewById(R.id.tv_ask);holder.tvAnswer = convertView.findViewById(R.id.tv_answer);holder.llAnswer = convertView.findViewById(R.id.ll_answer);holder.ivAnswer = convertView.findViewById(R.id.iv_answer);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}TalkBean item = getItem(position);if (item.isAsk){// 提问holder.tvAsk.setVisibility(View.VISIBLE);holder.llAnswer.setVisibility(View.GONE);holder.tvAsk.setText(item.content);}else {holder.tvAsk.setVisibility(View.GONE);holder.llAnswer.setVisibility(View.VISIBLE);holder.tvAnswer.setText(item.content);if (item.imageId > 0){// 有图片holder.ivAnswer.setVisibility(View.VISIBLE);holder.ivAnswer.setImageResource(item.imageId);}else {// 无图片holder.ivAnswer.setVisibility(View.GONE);}}return convertView;}}static class ViewHolder{public TextView tvAsk;public TextView tvAnswer;public LinearLayout llAnswer;public ImageView ivAnswer;}
}
2.5 聊天机器人：语音数据解析 & 展示提问对象
现在我们完成了数据的填充，接下来就要开始运用到科大讯飞的语音听写api了
- 修改MainActivity，完善startVoice()方法，代码如下：
public void startVoice(View view){RecognizerDialog mDialog = new RecognizerDialog(this, null);mDialog.setParameter(SpeechConstant.LANGUAGE,"zh_cn");mDialog.setParameter(SpeechConstant.ACCENT,"mandarin");mDialog.setListener(new RecognizerDialogListener() {@Overridepublic void onResult(RecognizerResult recognizerResult, boolean b) {String result = recognizerResult.getResultString();}@Overridepublic void onError(SpeechError speechError) {}});mDialog.show();}
- 由于要使用GSON来解析语音识别后的JSON数据，这里需要创建一个实体类VoiceBean，代码如下：
package com.example.chatrobot;import java.util.ArrayList;public class VoiceBean {public ArrayList<WsBean> ws;public class WsBean{public ArrayList<CwBean> cw;}public class CwBean{public String w;}
}
- 修改MainActivity，添加processData()方法，引入GSON来解析json数据，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;import com.google.gson.Gson;
import com.iflytek.cloud.RecognizerResult;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechUtility;
import com.iflytek.cloud.ui.RecognizerDialog;
import com.iflytek.cloud.ui.RecognizerDialogListener;import java.util.ArrayList;public class MainActivity extends AppCompatActivity {private ListView lvList;private ArrayList<TalkBean> mTalkList = new ArrayList<>();private ChatAdapter mAdapter;private StringBuffer mBuffer;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SpeechUtility.createUtility(this, SpeechConstant.APPID +"=5bfca40b");lvList = findViewById(R.id.lv_list);mAdapter = new ChatAdapter();lvList.setAdapter(mAdapter);}public void startVoice(View view){RecognizerDialog mDialog = new RecognizerDialog(this, null);mDialog.setParameter(SpeechConstant.LANGUAGE,"zh_cn");mDialog.setParameter(SpeechConstant.ACCENT,"mandarin");mBuffer = new StringBuffer();mDialog.setListener(new RecognizerDialogListener() {@Overridepublic void onResult(RecognizerResult recognizerResult, boolean b) {String result = recognizerResult.getResultString();String resultStriing = processData(result);mBuffer.append(resultStriing);if (b){// 话已经说完了String finalResult = mBuffer.toString();}}@Overridepublic void onError(SpeechError speechError) {}});mDialog.show();}private String processData(String result) {Gson gson = new Gson();VoiceBean voiceBean = gson.fromJson(result, VoiceBean.class);StringBuffer sb = new StringBuffer();for (VoiceBean.WsBean ws : voiceBean.ws) {String word = ws.cw.get(0).w;sb.append(word);}return sb.toString();}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return mTalkList.size();}@Overridepublic TalkBean getItem(int position) {return mTalkList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null){convertView = View.inflate(getApplicationContext(),R.layout.list_item,null);holder = new ViewHolder();holder.tvAsk = convertView.findViewById(R.id.tv_ask);holder.tvAnswer = convertView.findViewById(R.id.tv_answer);holder.llAnswer = convertView.findViewById(R.id.ll_answer);holder.ivAnswer = convertView.findViewById(R.id.iv_answer);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}TalkBean item = getItem(position);if (item.isAsk){// 提问holder.tvAsk.setVisibility(View.VISIBLE);holder.llAnswer.setVisibility(View.GONE);holder.tvAsk.setText(item.content);}else {holder.tvAsk.setVisibility(View.GONE);holder.llAnswer.setVisibility(View.VISIBLE);holder.tvAnswer.setText(item.content);if (item.imageId > 0){// 有图片holder.ivAnswer.setVisibility(View.VISIBLE);holder.ivAnswer.setImageResource(item.imageId);}else {// 无图片holder.ivAnswer.setVisibility(View.GONE);}}return convertView;}}static class ViewHolder{public TextView tvAsk;public TextView tvAnswer;public LinearLayout llAnswer;public ImageView ivAnswer;}
}
- 修改MainActivity，修改startVoice()方法，将解析后的字符串初始化为提问语句，并添加到集合中，代码如下：
public void startVoice(View view){RecognizerDialog mDialog = new RecognizerDialog(this, null);mDialog.setParameter(SpeechConstant.LANGUAGE,"zh_cn");mDialog.setParameter(SpeechConstant.ACCENT,"mandarin");mBuffer = new StringBuffer();mDialog.setListener(new RecognizerDialogListener() {@Overridepublic void onResult(RecognizerResult recognizerResult, boolean b) {String result = recognizerResult.getResultString();String resultStriing = processData(result);mBuffer.append(resultStriing);if (b){// 话已经说完了String finalResult = mBuffer.toString();// 初始化提问对象TalkBean askBean = new TalkBean(finalResult,true,-1);mTalkList.add(askBean);mAdapter.notifyDataSetChanged(); // 刷新ListView}}@Overridepublic void onError(SpeechError speechError) {}});mDialog.show();}
2.6 聊天机器人：展示回答对象 & 朗读回答
之前创建好了提问的对象，现在就来创建回答的对象
- 修改MainActivity，修改startVoice()方法，初始化提问对象，编写回话逻辑，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;import com.google.gson.Gson;
import com.iflytek.cloud.RecognizerResult;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechUtility;
import com.iflytek.cloud.ui.RecognizerDialog;
import com.iflytek.cloud.ui.RecognizerDialogListener;import java.util.ArrayList;public class MainActivity extends AppCompatActivity {private ListView lvList;private ArrayList<TalkBean> mTalkList = new ArrayList<>();private ChatAdapter mAdapter;private StringBuffer mBuffer;private String[] mAnswers = new String[]{"约吗？","这张怎么样？","100块啦","不要再要啦","最后一张啦"};private int[] mImageIds = new int[]{R.drawable.p1,R.drawable.p2,R.drawable.p3,R.drawable.p4};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SpeechUtility.createUtility(this, SpeechConstant.APPID +"=5bfca40b");lvList = findViewById(R.id.lv_list);mAdapter = new ChatAdapter();lvList.setAdapter(mAdapter);}public void startVoice(View view){RecognizerDialog mDialog = new RecognizerDialog(this, null);mDialog.setParameter(SpeechConstant.LANGUAGE,"zh_cn");mDialog.setParameter(SpeechConstant.ACCENT,"mandarin");mBuffer = new StringBuffer();mDialog.setListener(new RecognizerDialogListener() {@Overridepublic void onResult(RecognizerResult recognizerResult, boolean b) {String result = recognizerResult.getResultString();String resultStriing = processData(result);mBuffer.append(resultStriing);if (b){// 话已经说完了String finalResult = mBuffer.toString();// 初始化提问对象TalkBean askBean = new TalkBean(finalResult,true,-1);mTalkList.add(askBean);// 初始化回答对象String answerContent = "没听清";int imageId = -1;if (finalResult.contains("你好")){answerContent = "你好呀！";}else if (finalResult.contains("你是谁")){answerContent = "我是你的小助手！";}else if (finalResult.contains("美女")){// 随机回答int i = (int) (Math.random() * mAnswers.length);answerContent = mAnswers[i];// 随机图片int j = (int) (Math.random() * mImageIds.length);imageId = mImageIds[j];}else if (finalResult.contains("天王盖地虎")){answerContent = "小鸡炖蘑菇";imageId = R.drawable.m;}TalkBean answerBean = new TalkBean(answerContent,false,imageId);mTalkList.add(answerBean);mAdapter.notifyDataSetChanged(); // 刷新ListViewlvList.setSelection(mTalkList.size() - 1);// 显示在最后一个Item上}}@Overridepublic void onError(SpeechError speechError) {}});mDialog.show();}private String processData(String result) {Gson gson = new Gson();VoiceBean voiceBean = gson.fromJson(result, VoiceBean.class);StringBuffer sb = new StringBuffer();for (VoiceBean.WsBean ws : voiceBean.ws) {String word = ws.cw.get(0).w;sb.append(word);}return sb.toString();}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return mTalkList.size();}@Overridepublic TalkBean getItem(int position) {return mTalkList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null){convertView = View.inflate(getApplicationContext(),R.layout.list_item,null);holder = new ViewHolder();holder.tvAsk = convertView.findViewById(R.id.tv_ask);holder.tvAnswer = convertView.findViewById(R.id.tv_answer);holder.llAnswer = convertView.findViewById(R.id.ll_answer);holder.ivAnswer = convertView.findViewById(R.id.iv_answer);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}TalkBean item = getItem(position);if (item.isAsk){// 提问holder.tvAsk.setVisibility(View.VISIBLE);holder.llAnswer.setVisibility(View.GONE);holder.tvAsk.setText(item.content);}else {holder.tvAsk.setVisibility(View.GONE);holder.llAnswer.setVisibility(View.VISIBLE);holder.tvAnswer.setText(item.content);if (item.imageId > 0){// 有图片holder.ivAnswer.setVisibility(View.VISIBLE);holder.ivAnswer.setImageResource(item.imageId);}else {// 无图片holder.ivAnswer.setVisibility(View.GONE);}}return convertView;}}static class ViewHolder{public TextView tvAsk;public TextView tvAnswer;public LinearLayout llAnswer;public ImageView ivAnswer;}
}
- 修改MainActivity，添加startSpeak()方法，用于将回答内容朗诵出来，代码如下：
package com.example.chatrobot;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;import com.google.gson.Gson;
import com.iflytek.cloud.RecognizerResult;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechSynthesizer;
import com.iflytek.cloud.SpeechUtility;
import com.iflytek.cloud.ui.RecognizerDialog;
import com.iflytek.cloud.ui.RecognizerDialogListener;import java.util.ArrayList;public class MainActivity extends AppCompatActivity {private ListView lvList;private ArrayList<TalkBean> mTalkList = new ArrayList<>();private ChatAdapter mAdapter;private StringBuffer mBuffer;private String[] mAnswers = new String[]{"约吗？","这张怎么样？","100块啦","不要再要啦","最后一张啦"};private int[] mImageIds = new int[]{R.drawable.p1,R.drawable.p2,R.drawable.p3,R.drawable.p4};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SpeechUtility.createUtility(this, SpeechConstant.APPID +"=5bfca40b");lvList = findViewById(R.id.lv_list);mAdapter = new ChatAdapter();lvList.setAdapter(mAdapter);}public void startVoice(View view){RecognizerDialog mDialog = new RecognizerDialog(this, null);mDialog.setParameter(SpeechConstant.LANGUAGE,"zh_cn");mDialog.setParameter(SpeechConstant.ACCENT,"mandarin");mBuffer = new StringBuffer();mDialog.setListener(new RecognizerDialogListener() {@Overridepublic void onResult(RecognizerResult recognizerResult, boolean b) {String result = recognizerResult.getResultString();String resultStriing = processData(result);mBuffer.append(resultStriing);if (b){// 话已经说完了String finalResult = mBuffer.toString();// 初始化提问对象TalkBean askBean = new TalkBean(finalResult,true,-1);mTalkList.add(askBean);// 初始化回答对象String answerContent = "没听清";int imageId = -1;if (finalResult.contains("你好")){answerContent = "你好呀！";}else if (finalResult.contains("你是谁")){answerContent = "我是你的小助手！";}else if (finalResult.contains("美女")){// 随机回答int i = (int) (Math.random() * mAnswers.length);answerContent = mAnswers[i];// 随机图片int j = (int) (Math.random() * mImageIds.length);imageId = mImageIds[j];}else if (finalResult.contains("天王盖地虎")){answerContent = "小鸡炖蘑菇";imageId = R.drawable.m;}TalkBean answerBean = new TalkBean(answerContent,false,imageId);mTalkList.add(answerBean);mAdapter.notifyDataSetChanged(); // 刷新ListViewlvList.setSelection(mTalkList.size() - 1);// 显示在最后一个Item上startSpeak(answerContent);}}@Overridepublic void onError(SpeechError speechError) {}});mDialog.show();}private void startSpeak(String answerContent) {SpeechSynthesizer synthesizer = SpeechSynthesizer.createSynthesizer(this, null);synthesizer.setParameter(SpeechConstant.VOICE_NAME,"xiaoyan");synthesizer.setParameter(SpeechConstant.SPEED,"50");synthesizer.setParameter(SpeechConstant.VOLUME,"80");synthesizer.setParameter(SpeechConstant.ENGINE_TYPE,SpeechConstant.TYPE_CLOUD);synthesizer.setParameter(SpeechConstant.TTS_AUDIO_PATH,"./sdcard/iflytek.pcm");synthesizer.startSpeaking(answerContent,null);}private String processData(String result) {Gson gson = new Gson();VoiceBean voiceBean = gson.fromJson(result, VoiceBean.class);StringBuffer sb = new StringBuffer();for (VoiceBean.WsBean ws : voiceBean.ws) {String word = ws.cw.get(0).w;sb.append(word);}return sb.toString();}class ChatAdapter extends BaseAdapter{@Overridepublic int getCount() {return mTalkList.size();}@Overridepublic TalkBean getItem(int position) {return mTalkList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null){convertView = View.inflate(getApplicationContext(),R.layout.list_item,null);holder = new ViewHolder();holder.tvAsk = convertView.findViewById(R.id.tv_ask);holder.tvAnswer = convertView.findViewById(R.id.tv_answer);holder.llAnswer = convertView.findViewById(R.id.ll_answer);holder.ivAnswer = convertView.findViewById(R.id.iv_answer);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}TalkBean item = getItem(position);if (item.isAsk){// 提问holder.tvAsk.setVisibility(View.VISIBLE);holder.llAnswer.setVisibility(View.GONE);holder.tvAsk.setText(item.content);}else {holder.tvAsk.setVisibility(View.GONE);holder.llAnswer.setVisibility(View.VISIBLE);holder.tvAnswer.setText(item.content);if (item.imageId > 0){// 有图片holder.ivAnswer.setVisibility(View.VISIBLE);holder.ivAnswer.setImageResource(item.imageId);}else {// 无图片holder.ivAnswer.setVisibility(View.GONE);}}return convertView;}}static class ViewHolder{public TextView tvAsk;public TextView tvAnswer;public LinearLayout llAnswer;public ImageView ivAnswer;}
}
3.友盟统计
3.1 介绍 & SDK使用
统计，顾名思义，作用是统计应用的各种访问流量数据，这里要使用一个第三方的SDK——友盟统计，官网为：https://www.umeng.com/，官网上有相关使用教程
这里不再详述
3.2 友盟指数
友盟指数（现在更名为全域罗盘），是友盟自己对于应用这个SDK所进行的各种统计数据，可以在友盟的官网上查看：https://compass.umeng.com/
4.ZXing
二维码，在日常生活中很常见，一般扫描后会显示详情信息，如图所示：
其中，位于左上、左下、右上角都有一个独特的黑点，是作为二维码的特有标识点，而黑白相继出现的方块，则代表着计算机中的0和1
同样的，由于二维码底层实现复杂，因此这里同样引入一个第三方框架——ZXing来实现二维码的逻辑
5.DynamicGrid
DynamicGrid，是一种可拖拽的GridVew，可以用于实现频道的管理，如图所示：
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