#8 #284 综合编程

students/soft1714080902407/app/src/main/AndroidManifest.xml

@@ -1,27 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="edu.hzuapps.androidlabs.soft1714080902407">
+
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+
     <application
         android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.AppCompat.Light.NoActionBar">
-        <activity android:name=".Soft1714080902407Activity">
+        <activity android:name=".Login_Activity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".Detail_Activity"></activity>
+        <activity android:name=".Soft1714080902407Activity"/>
+        <activity android:name=".Detail_Activity" />
     </application>
 
 </manifest>

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/ChatAdapter.java

@@ -0,0 +1,73 @@
+package edu.hzuapps.androidlabs.soft1714080902407;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.TextView;
+
+import java.util.List;
+
+public class ChatAdapter extends BaseAdapter {
+    private List<Message> list;
+    private Context context;
+
+    public void setList(List<Message> list){
+        this.list=list;
+        notifyDataSetChanged();
+    }
+    public ChatAdapter(List<Message> list,Context context){
+        this.list=list;
+        this.context=context;
+    }
+
+    class HolderView{
+        TextView chattime,chatmsg;
+    }
+
+    @Override
+    public int getCount(){
+        return list.size();
+    }
+
+    @Override
+    public Object getItem(int position) {
+        return list.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @Override
+    public boolean isEnabled(int position) {
+        return false;
+    }
+
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        HolderView holderView = null;
+        Message message = list.get(position);
+        boolean isMeSend = message.getSend();
+        if (holderView == null) {
+            holderView = new HolderView();
+            if (isMeSend == true) {
+                convertView = View.inflate(context, R.layout.item_chat_right_bubble, null);
+                holderView.chatmsg = (TextView) convertView.findViewById(R.id.tv_chatmsg);
+                holderView.chatmsg.setText(message.getMsg());
+                holderView.chattime = (TextView) convertView.findViewById(R.id.tv_chattime);
+                holderView.chattime.setText(message.getTime());
+            } else {
+                convertView = View.inflate(context, R.layout.item_chat_left_bubble, null);
+
+            }
+            convertView.setTag(holderView);
+        } else {
+            holderView = (HolderView) convertView.getTag();
+        }
+        return convertView;
+    }
+
+}

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/Detail_Activity.java

@@ -23,15 +23,13 @@
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 
-public class Detail_Activity extends AppCompatActivity  implements View.OnClickListener {
+public class Detail_Activity extends AppCompatActivity {
     private Button mCheckButton;
     private Button mDownloadImageButton;
     private Button mloadimgButton;
-    private TextView mNetworkText;
     private ImageView mimageView;
     private File mPrivateRootDir;
     private File mImagesDir;
-    private boolean mConnected;
     private NetworkFileDownloader mFileDownloader;
     public static final String TAG = Detail_Activity.class.getSimpleName();
     public static final String IMAGE_URL_PREFIX = "https://github.com/Firethecode/android-labs-2019/raw/master/students/soft1714080902407/app/src/main/res/drawable/";
@@ -43,61 +41,27 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.detail_activity);
 
-        mCheckButton = (Button) findViewById(R.id.button_check);
         mDownloadImageButton = (Button) findViewById(R.id.button_download_image);
-        mNetworkText = (TextView) findViewById(R.id.text_network);
         mimageView = (ImageView) findViewById(R.id.image);
         mloadimgButton = (Button) findViewById(R.id.button_loadimg);
 
-        mCheckButton.setOnClickListener(this);
-        mDownloadImageButton.setOnClickListener(this);
-        mloadimgButton.setOnClickListener(this);
-
         mPrivateRootDir = getFilesDir();
 
         mImagesDir = new File(mPrivateRootDir, "images");
 
     }
 
-    @Override
     public void onClick(View view) {
-        if (view.getId() == R.id.button_check) {
-            checkNetworkState();
-        } else if (view.getId() == R.id.button_download_image) {
+        if (view.getId() == R.id.button_download_image) {
             downloadImages();
-        }else if (view.getId() == R.id.button_loadimg) {
+        }else if(view.getId() == R.id.button_loadimg) {
             showjpg();
+        }else if(view.getId()==R.id.button_back){
+            Intent intent = new Intent(Detail_Activity.this,Soft1714080902407Activity.class);
+            startActivity(intent);
         }
     }
 
-    private void checkNetworkState() {
-        ConnectivityManager connMgr = (ConnectivityManager)
-                getSystemService(Context.CONNECTIVITY_SERVICE);
-
-        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
-        if (networkInfo != null && networkInfo.isConnected()) {
-            mConnected = true;
-        } else {
-            mConnected = false;
-        }
-
-        String types = "";
-
-        networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
-        boolean isWifiConn = networkInfo != null && networkInfo.isConnected();
-        types += isWifiConn ? "Wi-Fi" : "";
-
-        networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
-        boolean isMobileConn = networkInfo != null && networkInfo.isConnected();
-        types += isMobileConn ? "流量" : "";
-
-        networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_BLUETOOTH);
-        boolean isBluetoothConn = networkInfo != null && networkInfo.isConnected();
-        types += isBluetoothConn ? ", 蓝牙" : "";
-
-        mNetworkText.setTextColor(mConnected ? Color.GREEN : Color.RED);
-        mNetworkText.setText(mConnected ? "网络正常 (" +types + ")" : "网络未连接!");
-    }
 
     private void downloadImages() {
         mFileDownloader = new NetworkFileDownloader(new NetworkFileDownloader.OnImageDownloadListener() {
@@ -134,10 +98,6 @@ public void onBitmapSaveError(String error) {
             mFileDownloader.download(imageUrl, true);
         }
     }
-    public void onClick1(View view){
-        Intent intent = new Intent(Detail_Activity.this,Soft1714080902407Activity.class);
-        startActivity(intent);
-    }
 
     public void showjpg(){
         Bitmap bitmap = getLoacalBitmap("/data/user/0/edu.hzuapps.androidlabs.Soft1714080902407/files/images/zjq.jpg");
@@ -153,4 +113,4 @@ public static Bitmap getLoacalBitmap(String url) {
             e.printStackTrace();
             return null;
         }
-}}
+    }}

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/Login_Activity.java

@@ -0,0 +1,27 @@
+package edu.hzuapps.androidlabs.soft1714080902407;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+
+public class Login_Activity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.login_activity);
+        boolean conn = ConnectionUtil.isConn(Login_Activity.this);
+
+        if (!conn) {
+            ConnectionUtil.setNetworkMethod(Login_Activity.this);
+        }
+    }
+
+    public void onClick(View view) {
+        if (view.getId() == R.id.button_login) {
+            Intent intent = new Intent(Login_Activity.this,Soft1714080902407Activity.class);
+            startActivity(intent);
+        }
+    }
+}

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/Message.java

@@ -3,6 +3,8 @@
 public class Message {
     private Long id;
     private String msg;
+    private String time;
+    private Boolean send;
 
     public Long getId() {
         return id;
@@ -20,18 +22,32 @@ public void setMsg(String msg) {
         this.msg = msg;
     }
 
-    public Message(Long id,String msg){
-        super();
-        this.id=id;
-        this.msg=msg;
+    public String getTime() {
+        return time;
     }
 
-    public Message(String msg){
-        super();
-        this.msg=msg;
+    public void setTime(String time) {
+        this.time = time;
+    }
+
+    public boolean getSend() {
+        return send;
+    }
+
+    public void setSend(boolean send) {
+        this.send = send;
     }
 
-    public  Message(){
-        super();
+    public Message(){
+
     }
+
+
+    public Message(Long id,String msg,String time,Boolean send){
+        this.id=id;
+        this.msg=msg;
+        this.time=time;
+        this.send=send;
+    }
+
 }

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/MessageDao.java

@@ -9,30 +9,42 @@
 import java.util.List;
 
 public class MessageDao {
-    private MyHelper myHelper;
+    private SQLiteHelper sqLiteHelper;
+
     public MessageDao(Context context){
-        myHelper=new MyHelper(context);
+        sqLiteHelper=new SQLiteHelper(context);
     }
+
     public void insert(Message message){
-        SQLiteDatabase db=myHelper.getWritableDatabase();
-        ContentValues values=new ContentValues();
-        values.put("msg",message.getMsg());
-        long id=db.insert("message",null,values);
+        SQLiteDatabase sqLiteDatabase=sqLiteHelper.getWritableDatabase();
+        ContentValues contentValues=new ContentValues();
+        contentValues.put("msg",message.getMsg());
+        contentValues.put("time",message.getTime());
+        contentValues.put("send",message.getSend());
+        long id=sqLiteDatabase.insert("message",null,contentValues);
         message.setId(id);
-        db.close();
+        sqLiteDatabase.close();
     }
 
     public List<Message> queryAll(){
-        SQLiteDatabase db=myHelper.getReadableDatabase();
-        Cursor cursor=db.query("message",null,null,null,null,null,null);
-        List<Message>list=new ArrayList<Message>();
-        while(cursor.moveToNext()){
-            long id= cursor.getLong(cursor.getColumnIndex("_id"));
-            String msg= cursor.getString(1);
-            list.add(new Message(id,msg));
+        SQLiteDatabase sqLiteDatabase=sqLiteHelper.getReadableDatabase();
+        Cursor cursor=sqLiteDatabase.query("message",null,null,null,null,null,null);
+        List<Message> list=new ArrayList<Message>();
+        while (cursor.moveToNext()){
+            long id=cursor.getLong(cursor.getColumnIndex("id"));
+            String msg=cursor.getString(1);
+            String time=cursor.getString(2);
+            int type=cursor.getInt(3);
+            boolean send;
+            if(type==1)
+            {
+                send=true;
+            }
+            else send=false;
+            list.add(new Message(id,msg,time,send));
         }
         cursor.close();
-        db.close();
+        sqLiteDatabase.close();
         return list;
     }
 }

students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/MyHelper.java → students/soft1714080902407/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902407/SQLiteHelper.java

@@ -4,13 +4,13 @@
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 
-public class MyHelper extends SQLiteOpenHelper {
-    public MyHelper(Context context){
+public class SQLiteHelper extends SQLiteOpenHelper {
+    public SQLiteHelper(Context context){
         super(context,"itcast.db",null,2);
     }
     public void onCreate(SQLiteDatabase db){
         System.out.println("onCreate");
-        db.execSQL("CREATE TABLE message(_id INTEGER PRIMARY KEY AUTOINCREMENT,msg varchar(100))");
+        db.execSQL("CREATE TABLE Message(id INTEGER PRIMARY KEY AUTOINCREMENT,msg varchar(100),time varchar(100),send boolean)");
     }
     public void onUpgrade(SQLiteDatabase db,int OldVersion,int NewVersion){
         System.out.println("onUpgrade");