添加网络状态判断

lesson02/src/main/java/io/hsiao/lesson02/MainActivity.java

@@ -85,7 +85,7 @@ public class MainActivity extends AppCompatActivity {
 
                 startActivity(intent);
             }
-        });
+});
 
         /**
          * 绑定Item的长按方法。

lesson03/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="io.hsiao.lesson03">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

lesson03/src/main/java/io/hsiao/lesson03/AlbumGridAdapter.java

@@ -80,6 +80,7 @@ public class AlbumGridAdapter extends BaseAdapter {
             layoutParams.height = imgHeight;
             layoutParams.width = imgHeight;
             holder.thumbnail.setLayoutParams(layoutParams);
+
             convertView.setTag(holder);
         } else {
             holder = (ViewHolder) convertView.getTag();

lesson03/src/main/java/io/hsiao/lesson03/MainActivity.java

@@ -2,8 +2,11 @@ package io.hsiao.lesson03;
 
 import android.content.Intent;
 import android.graphics.Point;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.os.Handler;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.util.Log;
@@ -13,11 +16,20 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.AbsListView;
 import android.widget.AdapterView;
+import android.widget.Button;
 import android.widget.GridView;
 import android.widget.ListView;
 import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 import io.hsiao.lesson03.data.AsyncListLoader;
+import io.hsiao.lesson03.data.DemoTask;
+import io.hsiao.lesson03.data.ImageApiClient;
+import io.hsiao.lesson03.model.Feeds;
 
 public class MainActivity extends AppCompatActivity {
     public static Point screenOutSize = new Point();
@@ -28,22 +40,71 @@ public class MainActivity extends AppCompatActivity {
 
     private int dataOffset = 0;
     private int pageSize = 15;
+    private DemoTask demoTask;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        reload();
+    }
+    private boolean isNetworkAvailable(){
+        ConnectivityManager manager = (ConnectivityManager) this
+                .getApplicationContext().getSystemService(
+                        CONNECTIVITY_SERVICE);
+
+        if (manager == null) {
+            return false;
+        }
+
+        NetworkInfo networkinfo = manager.getActiveNetworkInfo();
+        if (networkinfo == null || !networkinfo.isAvailable()) {
+            return false;
+        }
+        return true;
+    }
+    private void reload(){
+        if(isNetworkAvailable()){
+            loadContent();
+        }else
+            loadError();
+    }
+    private void loadError(){
+        setContentView(R.layout.layout_offline);
+        Button btn = (Button) findViewById(R.id.reload_btn);
+        btn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                reload();
+            }
+        });
+    }
+    private void loadContent(){
         setContentView(R.layout.activity_main);
+
         setSupportActionBar( (Toolbar) this.findViewById(R.id.main_toolbar));
         getWindowManager().getDefaultDisplay().getSize(screenOutSize);
-
         this.progressBar = (ProgressBar) this.findViewById(R.id.progressBar);
         this.listView = (GridView) this.findViewById(R.id.main_gridview);
         this.adapter = new MainListAdapter(this);
         listView.setAdapter(adapter);
 
+        listView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                Log.i("aa",view.toString());
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+
+            }
+        });
+
         listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                Log.i("aa",view.toString());
                 MainListAdapter.ViewHolder holder = (MainListAdapter.ViewHolder) view.getTag();
                 Log.i(TAG, holder.title.getText().toString());
 
@@ -94,14 +155,59 @@ public class MainActivity extends AppCompatActivity {
                 startActivity(intent);
                 break;
             case R.id.menu_settings:
+                demoTask.setShouldFinish(false);
                 break;
             case R.id.menu_topic:
                 break;
             case R.id.menu_usercenter:
+                testPost();
                 break;
             case R.id.menu_welcome:
+
+                testHttp();
+
                 break;
         }
         return true;
     }
+
+    private void testPost() {
+        final ImageApiClient api = new ImageApiClient();
+
+        new AsyncTask<String,Boolean,String>(){
+            @Override
+            protected String doInBackground(String[] objects) {
+                Map<String, String> param = new HashMap<>();
+                param.put("user_name","xzz");
+                param.put("age","22");
+
+                return api.postRaw("http://reefun.cn/youmap-service/",param);
+            }
+
+            @Override
+            protected void onPostExecute(String ret) {
+                     Toast.makeText(MainActivity.this,ret,Toast.LENGTH_SHORT)
+                            .show();
+             }
+        }.execute();
+    }
+
+    private void testHttp(){
+        final ImageApiClient api = new ImageApiClient();
+
+        new AsyncTask<String,Boolean,List<Feeds>>(){
+            @Override
+            protected List<Feeds> doInBackground(String[] objects) {
+                return api.getRaw("http://reefun.cn/real360/api/feeds/hot?limit=10&offset=0");
+            }
+
+            @Override
+            protected void onPostExecute(List<Feeds> ret) {
+               for(int i=0;i<ret.size();i++){
+                   Toast.makeText(MainActivity.this,ret.get(i).getName(),Toast.LENGTH_SHORT)
+                           .show();
+               }
+            }
+        }.execute();
+    }
 }

lesson03/src/main/java/io/hsiao/lesson03/MainListAdapter.java

@@ -93,12 +93,7 @@ public class MainListAdapter extends BaseAdapter {
                 .load("http://reefun.cn/real360/api/obj/thumbnail/" + json.getString("uuid"))
                 .fit()
                 .into(holder.thumbnail);
-        convertView.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
 
-            }
-        });
 
         return convertView;
     }

lesson03/src/main/java/io/hsiao/lesson03/PanoActivity.java

@@ -4,18 +4,29 @@ import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
+import android.view.View;
 import android.view.Window;
 import android.view.WindowManager;
 import android.widget.ImageView;
+import android.widget.ProgressBar;
 
 import com.google.vr.sdk.widgets.pano.VrPanoramaView;
+import com.squareup.picasso.Callback;
 import com.squareup.picasso.Downloader;
+import com.squareup.picasso.NetworkPolicy;
+import com.squareup.picasso.OkHttpDownloader;
 import com.squareup.picasso.Picasso;
 import com.squareup.picasso.UrlConnectionDownloader;
 
 import java.io.IOException;
+import java.io.InputStream;
+
+import io.hsiao.lesson03.data.HttpAPI;
+
+import static com.squareup.picasso.NetworkPolicy.*;
 
 public class PanoActivity extends AppCompatActivity {
 
@@ -23,6 +34,7 @@ public class PanoActivity extends AppCompatActivity {
     private String imgUrl;
 
     private VrPanoramaView vrView;
+    private ProgressBar progressBar;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -32,6 +44,8 @@ public class PanoActivity extends AppCompatActivity {
         //setContentView(R.layout.activity_pano);
         setContentView(R.layout.activity_gvr_view);
 
+        this.progressBar = (ProgressBar) findViewById(R.id.pano_progressbar);
+
         Intent intent = this.getIntent();
         this.imgUrl = intent.getStringExtra("img_url");
         this.vrView = (VrPanoramaView) this.findViewById(R.id.gvr_pano_view);
@@ -39,18 +53,39 @@ public class PanoActivity extends AppCompatActivity {
 
     }
     private void loadGvrPano(){
-        UrlConnectionDownloader  dl = new UrlConnectionDownloader(this);
-        Uri uri = Uri.parse("http://reefun.cn/real360/api/obj/fetch/" + imgUrl);
-        try {
-            Downloader.Response resp = dl.load(uri, -1);
-            Bitmap bmp = BitmapFactory.decodeStream(resp.getInputStream());
-
-            VrPanoramaView.Options opt = new VrPanoramaView.Options();
-            opt.inputType = VrPanoramaView.Options.TYPE_MONO;
-            this.vrView.loadImageFromBitmap(bmp,opt);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
+
+        new AsyncTask<String,Boolean,Bitmap>(){
+
+            @Override
+            protected void onCancelled() {
+
+            }
+
+            @Override
+            protected void onPreExecute() {
+                progressBar.setVisibility(View.VISIBLE);
+            }
+
+            @Override
+            protected Bitmap doInBackground(String[] args) {
+                InputStream in = new HttpAPI("").downloadImg(args[0]);
+                return BitmapFactory.decodeStream(in);
+            }
+
+            @Override
+            protected void onPostExecute(Bitmap bitmap) {
+                VrPanoramaView.Options opt = new VrPanoramaView.Options();
+                opt.inputType = VrPanoramaView.Options.TYPE_MONO;
+                vrView.loadImageFromBitmap(bitmap,opt);
+
+                progressBar.setVisibility(View.GONE);
+            }
+
+            @Override
+            protected void onProgressUpdate(Boolean... values) {
+
+            }
+        }.execute("http://reefun.cn/real360/api/obj/fetch/"+imgUrl);
     }
 
 }

lesson03/src/main/java/io/hsiao/lesson03/data/DemoTask.java

@@ -0,0 +1,58 @@
+package io.hsiao.lesson03.data;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.util.Log;
+import android.widget.Toast;
+
+import com.alibaba.fastjson.JSONArray;
+
+import io.hsiao.lesson03.MainActivity;
+import io.hsiao.lesson03.PanoActivity;
+
+/**
+ * Created by hsiao on 2018/3/24.
+ */
+
+public class DemoTask extends AsyncTask<String,Integer,String>{
+    boolean shouldFinish = true;
+    private MainActivity ctx;
+
+   public  DemoTask(MainActivity ctx){
+        this.ctx = ctx;
+    }
+
+    public void setShouldFinish(boolean shouldFinish) {
+        this.shouldFinish = shouldFinish;
+    }
+
+    @Override
+    protected void onPreExecute() {
+
+    }
+
+    @Override
+    protected String doInBackground(String[] objects) {
+        int n=0;
+        HttpAPI api = new HttpAPI("https://www.baidu.com/s?wd="+objects[0]);
+        JSONArray data = api.testGet("");
+
+        return data.toJSONString();
+    }
+
+    @Override
+    protected void onPostExecute(String s) {
+        Log.i("demo task",s);
+        Toast.makeText(ctx,s,Toast.LENGTH_SHORT).show();
+        Intent intent = new Intent(ctx, PanoActivity.class);
+        intent.putExtra("img_url","cca99c6d-1960-416b-b546-40ec4ee8682e");
+
+        ctx.startActivity(intent);
+    }
+
+    @Override
+    protected void onProgressUpdate(Integer[] values) {
+        Toast.makeText(ctx,"进度 "+values[0].toString(),Toast.LENGTH_SHORT).show();
+    }
+}

lesson03/src/main/java/io/hsiao/lesson03/data/HttpAPI.java

@@ -6,8 +6,8 @@ import com.alibaba.fastjson.JSONArray;
 
 import java.io.File;
 import java.io.IOException;
+import java.io.InputStream;
 
-import io.hsiao.lesson03.MainListAdapter;
 import okhttp3.Cache;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
@@ -36,13 +36,29 @@ public class HttpAPI {
                 .get()
                 .url(reqUrl)
                 .build();
+        String retString=null;
         try (Response resp = client.newCall(req).execute()) {
-                String retString = resp.body().string();
+                retString = resp.body().string();
                 return JSONArray.parseArray(retString);
         } catch (Exception ex) {
             ex.printStackTrace();
+            JSONArray array = new JSONArray();
+            array.add(retString);
+            return array;
         }
-        return null;
     }
 
+    public InputStream downloadImg(String url){
+        Request req = new Request.Builder()
+                .get().url(url)
+                .build();
+
+        try {
+            Response resp = client.newCall(req).execute();
+            return resp.body().byteStream();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
 }

lesson03/src/main/java/io/hsiao/lesson03/data/ImageApiClient.java

@@ -0,0 +1,79 @@
+package io.hsiao.lesson03.data;
+
+import com.alibaba.fastjson.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import io.hsiao.lesson03.model.Feeds;
+import okhttp3.CacheControl;
+import okhttp3.FormBody;
+import okhttp3.MultipartBody;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+
+/**
+ * Created by hsiao on 2018/3/24.
+ */
+
+public class ImageApiClient {
+    private OkHttpClient client;
+
+    public ImageApiClient(){
+        this.client = new OkHttpClient.Builder()
+                .build();
+    }
+
+    public String postRaw(String url, Map<String,String> param ){
+        FormBody.Builder bodyBldr = new FormBody.Builder();
+
+        Iterator<Map.Entry<String, String>> iter = param.entrySet().iterator();
+        while(iter.hasNext()){
+            Map.Entry<String, String> kv = iter.next();
+            bodyBldr.add(kv.getKey(),kv.getValue());
+        }
+
+        Request request = new Request.Builder()
+                .post(bodyBldr.build())
+                .url(url)
+                .build();
+
+        try {
+            Response resp = client.newCall(request).execute();
+            return resp.body().string();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public List<Feeds> getRaw(String url){
+        Request request = new Request.Builder()
+                            .get()
+                            .addHeader("User-Agent","youmap/http")
+                            .cacheControl(CacheControl.FORCE_NETWORK)
+                            .url(url)
+                            .build();
+
+        try {
+            Response response = client.newCall(request).execute();
+            String str = response.body().string() ;
+            JSONArray array = JSONArray.parseArray(str);
+
+            List<Feeds> feedsList = new ArrayList<Feeds>();
+            for(int i=0;i<array.size();i++){
+                feedsList.add(JSONObject.toJavaObject(array.getJSONObject(i),Feeds.class));
+            }
+
+            return feedsList;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

lesson03/src/main/java/io/hsiao/lesson03/model/Feeds.java

@@ -0,0 +1,73 @@
+package io.hsiao.lesson03.model;
+
+import java.util.Date;
+
+/**
+ * Created by hsiao on 2018/3/24.
+ */
+
+public class Feeds {
+    private String uuid;
+    private int user_id;
+    private String container;
+    private String name;
+    private String description;
+    private int create_time;
+    private int likes;
+
+    public String getUuid() {
+        return uuid;
+    }
+
+    public void setUuid(String uuid) {
+        this.uuid = uuid;
+    }
+
+    public int getUser_id() {
+        return user_id;
+    }
+
+    public void setUser_id(int user_id) {
+        this.user_id = user_id;
+    }
+
+    public String getContainer() {
+        return container;
+    }
+
+    public void setContainer(String container) {
+        this.container = container;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public int getCreate_time() {
+        return create_time;
+    }
+
+    public void setCreate_time(int create_time) {
+        this.create_time = create_time;
+    }
+
+    public int getLikes() {
+        return likes;
+    }
+
+    public void setLikes(int likes) {
+        this.likes = likes;
+    }
+}

lesson03/src/main/res/layout/activity_gvr_view.xml

@@ -10,7 +10,19 @@
         android:id="@+id/gvr_pano_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:scrollbars="@null"
-        />
+        android:scrollbars="@null">
+
+    </com.google.vr.sdk.widgets.pano.VrPanoramaView>
+
+    <ProgressBar
+        android:id="@+id/pano_progressbar"
+        style="@style/Widget.AppCompat.ProgressBar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:progressDrawable="@color/colorAccent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
 </android.support.constraint.ConstraintLayout>

lesson03/src/main/res/layout/layout_offline.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+
+<android.support.constraint.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_height="match_parent"
+    android:layout_width="match_parent"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <Button
+        android:id="@+id/reload_btn"
+        style="@style/Widget.AppCompat.Button.Borderless"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="无法访问互联网，轻触重试"
+        android:textColor="@color/colorGrey"
+        android:textSize="18sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</android.support.constraint.ConstraintLayout>
+

lesson03/src/main/res/layout/main_listview_item.xml

@@ -5,7 +5,10 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:layout_weight="1">
+    android:layout_weight="1"
+    android:focusable="false"
+    android:focusableInTouchMode="false"
+    android:descendantFocusability="blocksDescendants">
 
 
     <ImageView
@@ -13,6 +16,8 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_weight="1"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         app:srcCompat="@android:drawable/ic_menu_report_image" />
@@ -23,6 +28,8 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
         android:layout_weight="1"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         android:paddingLeft="5dp"
         android:paddingRight="5dp"
         android:text="TextView"
@@ -37,6 +44,8 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
         android:layout_weight="1"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         android:text="TextView"
         android:textColor="@color/colorGrey"
         android:textSize="13sp"
@@ -52,6 +61,8 @@
         android:layout_marginBottom="8dp"
         android:layout_marginEnd="8dp"
         android:layout_weight="1"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         android:text="2018-01-01"
         android:textColor="@color/colorWhite"
         android:textSize="10sp"
@@ -65,6 +76,8 @@
         android:layout_marginEnd="8dp"
         android:layout_marginTop="8dp"
         android:layout_weight="1"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         android:text="0"
         android:textColor="@color/colorWhite"
         android:textSize="10sp"
@@ -75,6 +88,8 @@
         android:id="@+id/ic_likes"
         android:layout_width="15dp"
         android:layout_height="15dp"
+        android:focusable="false"
+        android:focusableInTouchMode="false"
         app:layout_constraintBottom_toBottomOf="@+id/main_list_likes"
         app:layout_constraintEnd_toStartOf="@+id/main_list_likes"
         app:srcCompat="@drawable/ic_action_favor_border" />