ListView+WebView+ImageLoad+轮播

主Activity

public class MainActivity extends AppCompatActivity {    ListView lv; //ListView    beans bs;  //bean包    util ut;  //获取网络数据的包    List<beans.ResultBean.ListBean> list;   //bean包的集合用于传值    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv  = (ListView) findViewById(R.id.lv);        ListGson();        //ListView 的监听事件        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {                //传值过去...url路径                Intent intent = new Intent(MainActivity.this,WebActivity.class);                intent.putExtra("bs",list.get(i).getUrl());                startActivity(intent);                Toast.makeText(MainActivity.this,list.get(i).getTitle(),Toast.LENGTH_SHORT).show();            }        });    }    //ListView的解析        public void ListGson(){            new AsyncTask<String,String,String>(){                @Override                protected String doInBackground(String... strings) {                     String read = util.getNetDataStr();                    // 使用Gson把该字符输入流转换成JavaBean                     Gson Lvgson = new Gson();                    bs = Lvgson.fromJson(read, beans.class);                    list = bs .getResult().getList();                    return null;                }                @Override                protected void onPostExecute(String result) {                    MyApdateF myApdateF =new MyApdateF();                    lv.setAdapter(myApdateF);                    myApdateF.notifyDataSetChanged();                    super.onPostExecute(result);                }            }.execute();        }        //ListView适配器            class MyApdateF extends BaseAdapter {                @Override                public int getCount() {                    return bs == null?0:bs.getResult().getList().size();//三元运算符                }                @Override                public Object getItem(int i) {                    return null;                }                @Override                public long getItemId(int i) {                    return 0;                }                @Override                public View getView(int i, View view, ViewGroup viewGroup) {                    ViewHolder holder;                    if (view == null){                        view = View.inflate(MainActivity.this,R.layout.list_x,null);                        //初始化holder                        holder = new ViewHolder();                        holder.iv = view.findViewById(R.id.iv);                        holder.tv1 = view.findViewById(R.id.tv1);                        holder.tv2=view.findViewById(R.id.tv2);                        //赋值                        view.setTag(holder);                    }else{                        //取值                        holder = (ViewHolder) view.getTag();                    }                    holder.tv1.setText(bs.getResult().getList().get(i).getSource());                    holder.tv2.setText(bs.getResult().getList().get(i).getTitle());                    ImageLoader.getInstance().displayImage(bs.getResult().getList().get(i).getFirstImg(),holder.iv);                    return view;                }            }            class ViewHolder{                TextView tv1, tv2;                ImageView iv;            }        }

WebView的主方法

public class WebActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_web);                  WebView webView = (WebView) findViewById(R.id.Wv);                  Intent intent = getIntent();                  String url = intent.getStringExtra("bs");                  //加载                  webView.loadUrl(url);                  //设置                  webView.setWebViewClient(new WebViewClient());                  WebSettings settings = webView.getSettings();                  settings.setJavaScriptEnabled(true);                  settings.setJavaScriptCanOpenWindowsAutomatically(true);                      }    }

URL 获取网络数据

public class util {        //ListView            public static String getNetDataStr() {                String json = null;                try {                    URL url = new URL(                            "http://v.juhe.cn/weixin/query?key=88f7bbc507e3ecacfaeab2b47dd8936f");                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();                    conn.setRequestMethod("GET");                    int code = conn.getResponseCode();                    if (code == 200) {                        InputStream is = conn.getInputStream();                        ByteArrayOutputStream bos = new ByteArrayOutputStream();                        int len = -1;                        byte[] buff = new byte[1024];                        while((len = is.read(buff)) != -1){                            bos.write(buff,0,len);                        }                        json = new String(bos.toByteArray());                    }                } catch (Exception e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }                return json;            }}
 

轮播图的数据解析

//轮播图的解析 public void getBeanByGson() {     // 使用该方法得到了一个 Json的字符输入流     new AsyncTask<String,String,String>(){         @Override         protected String doInBackground(String... strings) {             Reader reader = NetuS.getNetData();             // 使用Gson把该字符输入流转换成JavaBean              Gson gson = new Gson();              Ib = gson.fromJson(reader, Imagebean.class);             return null;         }         @Override         protected void onPostExecute(String s) {             super.onPostExecute(s);             list=new ArrayList<ImageView>();             for (int i = 0; i <Ib.getBanner().size() ; i++) {                 ImageView imageView = new ImageView(getActivity());                 imageView.setScaleType(ImageView.ScaleType.FIT_XY);                 ImageLoader.getInstance().displayImage(Ib.getBanner().get(i).getImage_url(),imageView);                 list.add(imageView);             }             MyPagerAdapter myPagerAdapter   = new MyPagerAdapter();             VpF.setAdapter(myPagerAdapter);             handler.sendEmptyMessageDelayed(1,1000);         }     }.execute(); }

ImageLoad所需要继承的类

public class Myapps  extends Application {    //ImageLoader所需要继承的类        @Override        public void onCreate() {            super.onCreate();            ImageLoaderConfiguration configuration=new ImageLoaderConfiguration.Builder(this)                    .threadPoolSize(5)                    .build();            ImageLoader.getInstance().init(configuration);        }    }

Handler用于实现无限轮播

//用于实现无限轮播private Handler handler = new Handler(){    public void handleMessage(Message msg) {        //获取当前条目        int index = VpF.getCurrentItem();        //向右轮播        VpF.setCurrentItem(index+=1);        //间隔2秒        handler.sendEmptyMessageDelayed(2,2000);    };};