LibrarySearchFragment.java

package com.brady.jlulife.Fragments;


import android.app.Fragment;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.brady.jlulife.R;
import com.brady.jlulife.Utils.ConstValue;

/**
 * A simple {@link Fragment} subclass.
 */
public class LibrarySearchFragment extends BaseFragment {
    private static LibrarySearchFragment instance;
    WebView webView;

    public static LibrarySearchFragment getInstance() {
        if (instance == null)
            instance = new LibrarySearchFragment();
        return instance;
    }


    public LibrarySearchFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_library_search, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        webView = (WebView) view.findViewById(R.id.lib_view);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.loadUrl(ConstValue.LIBRARY_SEARCH_URI);
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                showDialog();
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                hideDialog();
            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                // TODO Auto-generated method stub
                view.loadUrl(url);// 使用当前WebView处理跳转
                return true;//true表示此事件在此处被处理，不需要再广播
            }

            @Override   //转向错误时的处理
            public void onReceivedError(WebView view, int errorCode,
                                        String description, String failingUrl) {
            }
        });
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.menu_library, menu);
    }

    public boolean canGoBack() {
        return webView.canGoBack();
    }

    public void preformBack() {
        webView.goBack();
    }
}