base

基类

public abstract class BaseActivity extends AppCompatActivity {

    protected HttpUtils httpUtils;
    private boolean isFullScreen;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        init();
    }

    /**
     * 初始化
     */
    private void init() {
        isFullScreen = isFullScreen();
        if (isFullScreen) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }
        setContentView(initLayout());
        findView();
        httpUtils = HttpUtils.getInstance();
        setListener();
        initFinish();
    }

    protected abstract boolean isFullScreen();

    /**
     * 初始化完成
     */
    protected abstract void initFinish();

    /**
     * 设置事件
     */
    protected abstract void setListener();

    /**
     * 查找控件
     */
    protected abstract void findView();

    /**
     * 填充布局
     *
     * @return
     */
    protected abstract int initLayout();
}

上面是基类

 

/展示页面//

public class MainActivity extends BaseActivity implements HttpCallback, AdapterView.OnItemClickListener {

    private PullToRefreshListView pullToRefreshListView;
    private String api = "http://172.17.8.100/mobile/exam/findNewList";
    private boolean isPull = false;
    private MainAdapter adapter;

    // 定义数据集
    private List<MainBean.ResultBean.DataBean> dataBeanList = new ArrayList<>();

    @Override
    protected boolean isFullScreen() {
        return false;
    }

    @Override
    protected void initFinish() {
        // 设置支持上拉 下拉
        pullToRefreshListView.setMode(PullToRefreshBase.Mode.BOTH);
        // 设置监听
        pullToRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
                isPull = true;
                loadData();
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
                loadData();
            }
        });

        adapter = new MainAdapter(this, dataBeanList);
        pullToRefreshListView.setAdapter(adapter);
        loadData();
    }

    /**
     * 加载数据
     */
    private void loadData() {
        httpUtils.getDataFromServer(api, this);
    }

    @Override
    protected void setListener() {
        pullToRefreshListView.setOnItemClickListener(this);
    }

    @Override
    protected void findView() {
        pullToRefreshListView = findViewById(R.id.pull_to_refresh_list);
    }

    @Override
    protected int initLayout() {
        return R.layout.activity_main;
    }

    @Override
    public void onSuccess(String result) {
        // 解析数据
        Gson gson = new Gson();
        MainBean mainBean = gson.fromJson(result, MainBean.class);

        // 下拉
        if (isPull) {
            isPull = !isPull;
            dataBeanList.clear();
        }
        // 添加数据
        dataBeanList.addAll(mainBean.getResult().getData());
        // 更新数据
        adapter.notifyDataSetChanged();
        // 停止刷新
        pullToRefreshListView.onRefreshComplete();
    }

    @Override
    public void onError(String errorMsg) {

    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Intent intent = new Intent(this, DetailActivity.class);
        MainBean.ResultBean.DataBean item = adapter.getItem(position);
        intent.putExtra("url", item.getUrl());
        startActivity(intent);
    }
}

/上面是展示页面//

 

========webview页面==============

 

public class DetailActivity extends BaseActivity implements HttpCallback {

    private static final int CODE_BANNER = 1;
    private static final long DELAY = 2000;
    private String bannerApi = "https://api.yunxuekeji.cn/yunxue_app_api/content/getIndexBanner/1";
    private String url;

    private ViewPager banner;
    private WebView webView;

    private List<ImageView> bannerImages = new ArrayList<>();

    @Override
    protected boolean isFullScreen() {
        return false;
    }

    @Override
    protected void initFinish() {
        webView.setWebViewClient(new WebViewClient());
        webView.setWebChromeClient(new WebChromeClient());
        webView.loadUrl(url);

        // 设置banner
        loadBannerData();

        banner.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        stopBanner();
                        break;
                    case MotionEvent.ACTION_UP:
                        startBanner();
                        break;
                }
                return false;
            }
        });
    }

    private void stopBanner() {
        mHandler.removeCallbacksAndMessages(null);
    }

    /**
     * 加载轮播数据
     */
    private void loadBannerData() {
        httpUtils.getDataFromServer(bannerApi, this);
    }

    @Override
    protected void setListener() {

    }

    @Override
    protected void findView() {
        url = getIntent().getStringExtra("url");

        webView = findViewById(R.id.web_view);
        banner = findViewById(R.id.banner);
    }

    @Override
    protected int initLayout() {
        return R.layout.activity_detail;
    }

    @Override
    public void onSuccess(String result) {
        // 解析数据
        Gson gson = new Gson();
        BannerBean bannerBean = gson.fromJson(result, BannerBean.class);

        // 遍历数据 创建图片
        for (BannerBean.BodyBean.ResultBean resultBean : bannerBean.getBody().getResult()) {
            ImageView imageView = new ImageView(this);
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
            ImageLoader.getInstance().displayImage(resultBean.getBarnerPic(), imageView);
            bannerImages.add(imageView);
        }
        // 设置Adapter
        banner.setAdapter(new BannerAdapter(bannerImages));
        // 轮播
        startBanner();
    }

    private void startBanner() {
        mHandler.sendEmptyMessageDelayed(CODE_BANNER, DELAY);
    }

    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case CODE_BANNER:
                    int currentItem = banner.getCurrentItem();
                    currentItem++;
                    banner.setCurrentItem(currentItem);
                    sendEmptyMessageDelayed(CODE_BANNER, DELAY);
                    break;
            }
        }
    };

    @Override
    public void onError(String errorMsg) {

    }
}

 

========webview页面==============

 

 

==================欢迎页面============================

 

public class WelcomeActivity extends BaseActivity {

    private static final int CODE_TO_MAIN = 1;
    private static final long DEAYL = 2000;
    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case CODE_TO_MAIN:
                    toMain();
                    break;
            }
        }
    };


    private void toMain() {
        startActivity(new Intent(this, MainActivity.class));
        finish();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mHandler.removeCallbacksAndMessages(null);
    }

    @Override
    protected boolean isFullScreen() {
        return true;
    }

    @Override
    protected void initFinish() {
        mHandler.sendEmptyMessageDelayed(CODE_TO_MAIN, DEAYL);
    }

    @Override
    protected void setListener() {

    }

    @Override
    protected void findView() {

    }

    @Override
    protected int initLayout() {
        return R.layout.activity_welcome;
    }
}

 

==================欢迎页面============================

 

///////////////////图片了适配器///////////////

 

public class BannerAdapter extends PagerAdapter {

    private List<ImageView> imageViewList;

    public BannerAdapter(List<ImageView> imageViewList) {
        this.imageViewList = imageViewList;
    }

    @Override
    public int getCount() {
        return Integer.MAX_VALUE;
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        ImageView imageView = imageViewList.get(position % imageViewList.size());
        ViewGroup parent = (ViewGroup) imageView.getParent();
        if (parent != null) {
            parent.removeView(imageView);
        }
        container.addView(imageView);
        return imageView;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);
    }
}
 

///////////////////图片的适配器///////////////

 

///////////////////////////////////////////////////数据的适配器/////////////////////////////////////////////////////

 

public class MainAdapter extends BaseAdapter {

    private Context context;
    private List<MainBean.ResultBean.DataBean> dataBeanList;

    public MainAdapter(Context context, List<MainBean.ResultBean.DataBean> dataBeanList) {
        this.context = context;
        this.dataBeanList = dataBeanList;
    }

    @Override
    public int getCount() {
        return dataBeanList.size();
    }

    @Override
    public MainBean.ResultBean.DataBean getItem(int position) {
        return dataBeanList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public int getItemViewType(int position) {
        if (!TextUtils.isEmpty(dataBeanList.get(position).getThumbnail_pic_s03())) {
            return VIEW_TYPE_TWO;
        } else {
            return VIEW_TYPE_ONE;
        }
    }

    @Override
    public int getViewTypeCount() {
        return super.getViewTypeCount() + 3;
    }

    private final int VIEW_TYPE_ONE = 1;
    private final int VIEW_TYPE_TWO = 2;

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int viewType = getItemViewType(position);
        switch (viewType) {
            case VIEW_TYPE_ONE:
                ViewHodler hodler = null;
                if (convertView == null) {
                    hodler = new ViewHodler();
                    convertView = LayoutInflater.from(context).inflate(R.layout.main_list_item_one, null, false);
                    hodler.tvTitle = convertView.findViewById(R.id.tv_title);
                    hodler.ivImage = convertView.findViewById(R.id.iv_image);
                    convertView.setTag(hodler);
                } else {
                    hodler = (ViewHodler) convertView.getTag();
                }
                hodler.tvTitle.setText(dataBeanList.get(position).getTitle());
                ImageLoader.getInstance().displayImage(dataBeanList.get(position).getThumbnail_pic_s(), hodler.ivImage);
                break;
            case VIEW_TYPE_TWO:
                ViewHolderTwo holderTwo = null;
                if (convertView == null) {
                    holderTwo = new ViewHolderTwo();
                    convertView = LayoutInflater.from(context).inflate(R.layout.main_list_item_two, null, false);
                    holderTwo.tvTitle = convertView.findViewById(R.id.tv_title);
                    holderTwo.ivImage = convertView.findViewById(R.id.iv_image);
                    holderTwo.ivImage2 = convertView.findViewById(R.id.iv_image2);
                    holderTwo.ivImage3 = convertView.findViewById(R.id.iv_image3);
                    convertView.setTag(holderTwo);
                } else {
                    holderTwo = (ViewHolderTwo) convertView.getTag();
                }
                holderTwo.tvTitle.setText(dataBeanList.get(position).getTitle());
                ImageLoader.getInstance().displayImage(dataBeanList.get(position).getThumbnail_pic_s(), holderTwo.ivImage);
                ImageLoader.getInstance().displayImage(dataBeanList.get(position).getThumbnail_pic_s02(), holderTwo.ivImage2);
                ImageLoader.getInstance().displayImage(dataBeanList.get(position).getThumbnail_pic_s03(), holderTwo.ivImage3);
                break;
        }
        return convertView;
    }

    class ViewHodler {
        TextView tvTitle;
        ImageView ivImage;
    }

    class ViewHolderTwo {
        TextView tvTitle;
        ImageView ivImage;
        ImageView ivImage2;
        ImageView ivImage3;
    }
}

//////////////////////////////////////////////上面是数据的适配器/////////////////////////////////////////////////

 

//////////////////////////////////////////////////application////////////////// //////////////////

 

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        initImageLoader();
    }

    private void initImageLoader() {
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration
                .Builder(getApplicationContext())
                .build();
        ImageLoader.getInstance().init(configuration);
    }
}

 

//////////////////////////////////////////////////application///////////// /////////////////////////////

 

//////////////////////////////////////////////////Httputils/////////////////////////////////////////

public class HttpUtils {

    private static final HttpUtils ourInstance = new HttpUtils();

    public static HttpUtils getInstance() {
        return ourInstance;
    }

    private HttpUtils() {
    }

    /**
     * 封装Http get请求获取数据
     */
    public void getDataFromServer(String url, HttpCallback callback) {
        new LoadDataTask(callback).execute(url);
    }

    class LoadDataTask extends AsyncTask<String, Void, String> {

        private HttpCallback callback;

        public LoadDataTask(HttpCallback callback) {
            this.callback = callback;
        }

        @Override
        protected String doInBackground(String... strings) {
            try {
                URL url = new URL(strings[0]);
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                connection.setConnectTimeout(5000);
                connection.setReadTimeout(5000);
                if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                    return CharStreams.toString(new InputStreamReader(connection.getInputStream(), "UTF-8"));
                }
            } catch (Exception e) {
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(String s) {
            if (callback != null) {
                if (!TextUtils.isEmpty(s)) {
                    callback.onSuccess(s);
                } else {
                    callback.onError("没有请求到数据");
                }
            }
        }
    }
}

//////////////////////////////////////////////////Httputils/////////////////////////////////////////

 

//////////////////////////////////////////////////httpCallBack////////////////////////////////////

public interface HttpCallback {

    void onSuccess(String result);

    void onError(String errorMsg);
}

//////////////////////////////////////////////上面是httpcallBack//////////////////////////////