17023104+陈旭玲

app/build.gradle

@@ -25,7 +25,7 @@ dependencies {
     implementation 'com.google.code.gson:gson:2.8.5'
     implementation 'com.github.bumptech.glide:glide:4.5.0'
     annotationProcessor 'com.github.bumptech.glide:compiler:4.5.0'
-    implementation  'com.android.support:recyclerview-v7:28.0.0'
+    implementation 'com.android.support:recyclerview-v7:28.0.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

app/src/main/AndroidManifest.xml

@@ -11,6 +11,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <activity android:name=".activity.DetailActivity"></activity>
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/nd/frt/recentconversation/MainActivity.java

@@ -1,28 +1,65 @@
 package com.nd.frt.recentconversation;
 
+import android.content.Intent;
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
+import android.view.Menu;
+import android.view.MenuItem;
 
+import com.nd.frt.recentconversation.activity.DetailActivity;
 import com.nd.frt.recentconversation.adapter.UserAdapter;
 import com.nd.frt.recentconversation.model.UserInfo;
 import com.nd.frt.recentconversation.service.UserInfoService;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class MainActivity extends AppCompatActivity {
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         UserInfoService userInfoService = new UserInfoService();
         List<UserInfo> userInfos = userInfoService.getUserInfos(this);
-        UserAdapter userAdapter = new UserAdapter(userInfos);
-        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rvRecyclerView);
-        recyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
-        recyclerView.setAdapter(userAdapter);
+        RecyclerView rvUsers = (RecyclerView) findViewById(R.id.rvUsers);
+        rvUsers.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
+        UserAdapter mUserAdapter = new UserAdapter(userInfos);
+        rvUsers.setAdapter(mUserAdapter);
     }
 
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_main,menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if(item.getItemId() == R.id.menu_add){
+            UserInfo userInfo = new UserInfo();
+            userInfo.userName = "chenxuling";
+            userInfo.content = "1051106490@qq.com";
+            userInfo.avatarUrl = "https://randomuser.me/api/portraits/women/64.jpg";
+            ArrayList<UserInfo> mUserAdapter = null;
+            mUserAdapter.add(userInfo);
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (resultCode == RESULT_OK){
+            if (data != null) {
+                UserInfo userInfo = (UserInfo) data.getSerializableExtra(DetailActivity.PARAM_USER_INFO);
+                int index = data.getIntExtra(DetailActivity.PARAM_USER_INDEX,0);
+                UserAdapter mUserAdapter = null;
+                mUserAdapter.edit(index,userInfo);
+            }
+        }
+    }
 }

app/src/main/java/com/nd/frt/recentconversation/activity/DetailActivity.java

@@ -0,0 +1,70 @@
+package com.nd.frt.recentconversation.activity;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.ImageView;
+
+import com.bumptech.glide.Glide;
+import com.nd.frt.recentconversation.R;
+import com.nd.frt.recentconversation.model.UserInfo;
+
+public class DetailActivity extends AppCompatActivity {
+    public static final String PARAM_USER_INFO ="user_info" ;
+    public static final String PARAM_USER_INDEX ="user_index" ;
+    private int mUserIndex;
+
+    public static void start(Activity context, int index, UserInfo userInfo,int requestCode) {
+        Intent starter = new Intent(context, DetailActivity.class);
+        starter.putExtra(PARAM_USER_INFO,userInfo);
+        starter.putExtra(PARAM_USER_INDEX,index);
+        context.startActivityForResult(starter,requestCode);
+    }
+
+    @SuppressLint("RestrictedApi")
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_detail);
+        ActionBar supportActionBar = getSupportActionBar();
+        assert supportActionBar != null;
+        supportActionBar.setDefaultDisplayHomeAsUpEnabled(true);
+        final Intent intent = getIntent();
+        final UserInfo mUserInfo = ((UserInfo) intent.getSerializableExtra(PARAM_USER_INFO));
+        final int mUserIndex = intent.getIntExtra(PARAM_USER_INDEX,0);
+        supportActionBar.setTitle(mUserInfo.userName);
+        supportActionBar.setSubtitle(mUserInfo.content);
+        final EditText etUserName = findViewById(R.id.etUserName);
+        ImageView ivAvatar = findViewById(R.id.ivAvatar);
+        Glide.with(this)
+                .load(mUserInfo.avatarUrl)
+                .into(ivAvatar);
+      findViewById(R.id.btnOK).setOnClickListener(new View.OnClickListener() {
+          @Override
+          public void onClick(View v) {
+              mUserInfo.userName = etUserName.getText().toString();
+              Intent intentResult = new Intent();
+              intentResult.putExtra(PARAM_USER_INFO,mUserInfo);
+              intentResult.putExtra(PARAM_USER_INDEX,mUserIndex);
+              setResult(RESULT_OK,intentResult);
+              finish();
+          }
+      });
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if(item.getItemId() == android.R.id.home){
+            finish();
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}

app/src/main/java/com/nd/frt/recentconversation/adapter/UserAdapter.java

@@ -1,5 +1,6 @@
 package com.nd.frt.recentconversation.adapter;
 
+import android.app.Activity;
 import android.support.annotation.NonNull;
 import android.support.v7.widget.RecyclerView;
 import android.util.Log;
@@ -10,6 +11,7 @@
 
 import com.bumptech.glide.Glide;
 import com.nd.frt.recentconversation.R;
+import com.nd.frt.recentconversation.activity.DetailActivity;
 import com.nd.frt.recentconversation.model.UserInfo;
 import com.nd.frt.recentconversation.viewholder.UserViewHolder;
 
@@ -18,6 +20,7 @@
 public class UserAdapter extends RecyclerView.Adapter<UserViewHolder> {
 
     public static final String TAG = UserAdapter.class.getSimpleName();
+    private static final int REQUEST_EDIT_USER_INFO = 0*1001;
 
     private List<UserInfo> mUserInfos;
 
@@ -35,7 +38,7 @@ public UserViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
     }
 
     @Override
-    public void onBindViewHolder(@NonNull UserViewHolder userViewHolder, int position) {
+    public void onBindViewHolder(@NonNull UserViewHolder userViewHolder, final int position) {
         Log.d(TAG, "onBindViewHolder");
         final UserInfo userInfo = mUserInfos.get(position);
         Glide.with(userViewHolder.mIvAvatar).load(userInfo.avatarUrl).into(userViewHolder.mIvAvatar);
@@ -47,10 +50,24 @@ public void onClick(View v) {
                 Toast.makeText(v.getContext(), v.getContext().getString(R.string.hello), Toast.LENGTH_LONG).show();
             }
         });
+        userViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                DetailActivity.start((Activity) v.getContext(),position,userInfo,REQUEST_EDIT_USER_INFO);
+            }
+        });
     }
 
     @Override
     public int getItemCount() {
         return mUserInfos.size();
     }
+    public void add(UserInfo userInfo){
+        mUserInfos.add(userInfo);
+        notifyDataSetChanged();
+    }
+    public void edit(int index,UserInfo userInfo){
+        mUserInfos.set(index,userInfo);
+        notifyDataSetChanged();
+    }
 }

app/src/main/java/com/nd/frt/recentconversation/model/UserInfo.java

@@ -1,6 +1,8 @@
 package com.nd.frt.recentconversation.model;
 
-public class UserInfo {
+import java.io.Serializable;
+
+public class UserInfo implements Serializable {
 
     public String avatarUrl;
     public String userName;

app/src/main/res/drawable-anydpi/ic_action_add.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>

app/src/main/res/layout/activity_detail.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    android:gravity="center_horizontal"
+    tools:context=".activity.DetailActivity">
+
+    <ImageView
+        android:contentDescription="@string/avatar"
+        android:id="@+id/ivAvatar"
+        android:layout_width="96dp"
+        android:layout_height="96dp" />
+
+    <EditText
+        android:id="@+id/etUserName"
+        android:hint="@string/username"
+        android:layout_width="match_parent"
+        android:inputType="text"
+        android:layout_marginTop="10dp"
+        android:layout_height="wrap_content"
+        tools:ignore="Autofill" />
+
+    <Button
+        android:id="@+id/btnOK"
+        android:text="@android:string/ok"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -2,4 +2,7 @@
     <string name="app_name">RecentConversationDemo</string>
     <string name="z">dsdsdsdsdsdsdsdsdsa</string>
     <string name="hello">Hello</string>
+    <string name="add">add</string>
+    <string name="avatar">avatar</string>
+    <string name="username">User Name</string>
 </resources>