Merge pull request #1933 from Seechai47/master

#4 #978 第四次实验

students/soft1714080902333/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="edu.hzuapps.androidlabs.soft1714080902333">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <!-- 存储权限-->
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+    <!-- 摄像头权限-->
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature android:name="android.hardware.camera.autofocus" />
+
+    <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/AppTheme"
+        android:usesCleartextTraffic="true">
+        <activity android:name=".activity.StoreActivity" />
+        <activity android:name=".activity.NewsActivity" />
+        <activity
+            android:name=".activity.MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

students/soft1714080902333/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902333/activity/MainActivity.java

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+package edu.hzuapps.androidlabs.soft1714080902333.activity;
+
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.design.widget.FloatingActionButton;
+import android.support.design.widget.Snackbar;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+import android.view.View;
+import android.support.design.widget.NavigationView;
+import android.support.v4.view.GravityCompat;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarDrawerToggle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.AdapterView;
+import android.widget.ListView;
+import android.widget.Toast;
+
+import com.acker.simplezxing.activity.CaptureActivity;
+import com.loopj.android.http.AsyncHttpClient;
+import com.loopj.android.http.AsyncHttpResponseHandler;
+
+import java.io.UnsupportedEncodingException;
+import java.util.List;
+
+import cz.msebera.android.httpclient.Header;
+import edu.hzuapps.androidlabs.soft1714080902333.adapter.NewsAdapter;
+import edu.hzuapps.androidlabs.soft1714080902333.bean.NewsInfo;
+import edu.hzuapps.androidlabs.soft1714080902333.R;
+import edu.hzuapps.androidlabs.soft1714080902333.utils.HttpUtils;
+
+public class MainActivity extends AppCompatActivity
+        implements NavigationView.OnNavigationItemSelectedListener {
+
+    private static final int REQ_CODE_PERMISSION = 0x1111;
+
+    private ListView lv_news;
+    private List<NewsInfo> newsInfos;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                        .setAction("Action", null).show();
+            }
+        });
+
+        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
+        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
+                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
+        drawer.addDrawerListener(toggle);
+        toggle.syncState();
+
+        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
+        navigationView.setNavigationItemSelectedListener(this);
+
+        lv_news = (ListView) findViewById(R.id.lv_news);
+        fillData();
+    }
+
+    @Override
+    public void onBackPressed() {
+        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
+        if (drawer.isDrawerOpen(GravityCompat.START)) {
+            drawer.closeDrawer(GravityCompat.START);
+        } else {
+            super.onBackPressed();
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    @SuppressWarnings("StatementWithEmptyBody")
+    @Override
+    public boolean onNavigationItemSelected(MenuItem item) {
+        // Handle navigation view item clicks here.
+        int id = item.getItemId();
+
+        if (id == R.id.nav_camera) {         // 启动二维码扫描
+            // 动态申请权限
+            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA) !=
+                    PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(MainActivity.this,
+                        new String[] {Manifest.permission.CAMERA}, REQ_CODE_PERMISSION);
+            } else {
+                startCaptureActivityForResult();
+            }
+
+        } else if (id == R.id.nav_gallery) { // 启动便签
+            Intent intent = new Intent();
+            intent.setClass(MainActivity.this, StoreActivity.class);
+            startActivity(intent);
+            MainActivity.this.finish();
+        } else if (id == R.id.nav_slideshow) {
+
+        } else if (id == R.id.nav_manage) {
+
+        } else if (id == R.id.nav_share) {
+
+        } else if (id == R.id.nav_send) {
+
+        }
+
+        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
+        drawer.closeDrawer(GravityCompat.START);
+        return true;
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        switch (requestCode) {
+            case REQ_CODE_PERMISSION: {
+                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                    // 同意权限申请
+                    startCaptureActivityForResult();
+                } else {
+                    // 不同意权限申请
+                    Toast.makeText(this, "相机权限为开启，无法使用二维码扫描功能", Toast.LENGTH_LONG).show();
+                }
+            }
+            break;
+        }
+    }
+
+    // 解析JSON文件
+    private void fillData() {
+        AsyncHttpClient client = new AsyncHttpClient();
+        // 获取JSON文件（存储在Tomcat上）
+        client.get("http://10.60.223.30:8080/NewsInfo.json", new AsyncHttpResponseHandler() {
+            @Override
+            public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
+                try {
+                    String json = new String(responseBody, "utf-8");
+                    newsInfos = HttpUtils.getNewsInfo(json);
+                    // 解析失败
+                    if (newsInfos == null) {
+                        Toast.makeText(MainActivity.this, "解析失败", Toast.LENGTH_LONG).show();
+                    }
+                    // 解析成功
+                    else {
+                        // 设置ListView内容
+                        lv_news.setAdapter(new NewsAdapter(MainActivity.this, newsInfos));
+                        // 设置点击事件
+                        lv_news.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+                            @Override
+                            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                                Bundle bundle = new Bundle();
+                                bundle.putString("uri", newsInfos.get(position).getUrl());
+                                Intent intent = new Intent();
+                                intent.setClass(MainActivity.this, NewsActivity.class);
+                                intent.putExtras(bundle);
+                                startActivity(intent);
+                            }
+                        });
+                    }
+                } catch (UnsupportedEncodingException e) {
+                    e.printStackTrace();
+                }
+            }
+
+            @Override
+            public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {
+            }
+        });
+    }
+
+    // 启动二维码扫描目标Activity
+    private void startCaptureActivityForResult() {
+        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
+        Bundle bundle = new Bundle();
+
+        bundle.putBoolean(CaptureActivity.KEY_NEED_BEEP, CaptureActivity.VALUE_BEEP);
+        bundle.putBoolean(CaptureActivity.KEY_NEED_VIBRATION, CaptureActivity.VALUE_VIBRATION);
+        bundle.putBoolean(CaptureActivity.KEY_NEED_EXPOSURE, CaptureActivity.VALUE_NO_EXPOSURE);
+        bundle.putByte(CaptureActivity.KEY_FLASHLIGHT_MODE, CaptureActivity.VALUE_FLASHLIGHT_OFF);
+        bundle.putByte(CaptureActivity.KEY_ORIENTATION_MODE, CaptureActivity.VALUE_ORIENTATION_AUTO);
+        bundle.putBoolean(CaptureActivity.KEY_SCAN_AREA_FULL_SCREEN, CaptureActivity.VALUE_SCAN_AREA_FULL_SCREEN);
+        bundle.putBoolean(CaptureActivity.KEY_NEED_SCAN_HINT_TEXT, CaptureActivity.VALUE_SCAN_HINT_TEXT);
+
+        intent.putExtra(CaptureActivity.EXTRA_SETTING_BUNDLE, bundle);
+        startActivityForResult(intent, CaptureActivity.REQ_CODE);
+    }
+}

students/soft1714080902333/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902333/activity/NewsActivity.java

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+package edu.hzuapps.androidlabs.soft1714080902333.activity;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+
+import edu.hzuapps.androidlabs.soft1714080902333.R;
+
+public class NewsActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_news);
+
+        // 新页面接收数据
+        Bundle bundle = this.getIntent().getExtras();
+        // 接收name值
+        String name = bundle.getString("uri");
+
+        WebView webView = (WebView) findViewById(R.id.mWebView);
+
+        WebSettings webSettings = webView.getSettings();
+
+        // Js交互权限
+        webSettings.setJavaScriptEnabled(true);
+        webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
+
+        webSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
+
+        webSettings.setDomStorageEnabled(true);
+
+        webView.loadUrl(name);
+    }
+}

students/soft1714080902333/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902333/activity/StoreActivity.java

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+package edu.hzuapps.androidlabs.soft1714080902333.activity;
+
+import android.content.Context;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+
+import edu.hzuapps.androidlabs.soft1714080902333.R;
+
+public class StoreActivity extends AppCompatActivity {
+    private EditText ip_info;
+    private Button but_rd;
+    private Button but_wr;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_store);
+
+        // 获取Layout控件
+        ip_info = (EditText) findViewById(R.id.ip_info);
+        but_rd = (Button) findViewById(R.id.but_rd);
+        but_wr = (Button) findViewById(R.id.but_wr);
+
+        but_wr.setOnClickListener(new ButtonListener());
+        but_rd.setOnClickListener(new ButtonListener());
+    }
+
+    // Button点击事件
+    private class ButtonListener implements View.OnClickListener {
+        public void onClick(View view) {
+            switch (view.getId()) {
+                case R.id.but_wr:
+                    String message_wr = "\n";
+                    message_wr = ip_info.getText().toString().trim();
+                    FileOutputStream fileOutputStream;
+                    try {
+                        fileOutputStream = openFileOutput("cache.txt", Context.MODE_APPEND);
+                        fileOutputStream.write(message_wr.getBytes());
+                        fileOutputStream.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(StoreActivity.this, "数据保存成功", Toast.LENGTH_SHORT)
+                            .show();
+                    break;
+                case R.id.but_rd:
+                    String message_rd = "";
+                    try {
+                        FileInputStream fileInputStream = openFileInput("cache.txt");
+                        byte[] buffer = new byte[fileInputStream.available()];
+                        fileInputStream.read(buffer);
+                        message_rd = new String(buffer);
+                        fileInputStream.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(StoreActivity.this, "保存的数据是：" + message_rd,
+                            Toast.LENGTH_SHORT).show();
+                    break;
+                    default:
+                        break;
+            }
+        }
+    }
+}