本文介绍了设置的WebView使用loadURL编程是在片段类的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要做到的是,在每一个选项卡我想显示不同的网站,像

 标签1:http://www.stackoverflow.com
表2:HTTP://www.google..com
标签3. http://www.developers.android.com
 

我的问题是我无法访问web视图对象为使用loadURL()

要澄清我的问题,这是我的code:

FragmentTabsPagerActivity.java

 公共类FragmentTabsPagerActivity扩展FragmentActivity实现TabHost.OnTabChangeListener,ViewPager.OnPageChangeListener {

        私人TabHost mTab​​Host;
        私人ViewPager mViewPager;
        私人的HashMap<字符串,TabInfo> mapTabInfo =新的HashMap<字符串,FragmentTabsPagerActivity.TabInfo>();
        私人PagerAdapter mPagerAdapter;
        ...

        私人无效initialiseTabHost(捆绑的args){
            mTabHost =(TabHost)findViewById(android.R.id.tabhost);
            mTabHost.setup();

            TabInfo tabInfo = NULL;
            捆绑bundle1 =新包();
            捆绑bundle2中=新包();
            捆绑软件包3 =新包();

            bundle1.putInt(身份证,1);
            bundle2.putInt(ID,2);
            bundle3.putInt(ID,3);

            FragmentTabsPagerActivity.addTab(此,this.mTabHost,this.mTabHost.newTabSpec(TAB1)setIndicator(标签1),(tabInfo =新TabInfo(TAB1,TabsFragment.class,bundle1))。);
            FragmentTabsPagerActivity.addTab(此,this.mTabHost,this.mTabHost.newTabSpec(TAB2)setIndicator(标签2),(tabInfo =新TabInfo(TAB2,TabsFragment.class,bundle2中))。);
            FragmentTabsPagerActivity.addTab(这一点,this.mTabHost,this.mTabHost.newTabSpec(TAB3)setIndicator(标签3),(tabInfo =新TabInfo(TAB3,TabsFragment.class,软件包3)));

            this.mapTabInfo.put(tabInfo.tag,tabInfo);
            mTabHost.setOnTabChangedListener(本);
        }
}
 

TabsFragment.java

 公共类TabsFragment扩展片段{
    的LinearLayout布局;
    的WebView mWebView;

    @覆盖
    公共查看onCreateView(LayoutInflater充气,容器的ViewGroup,捆绑savedInstanceState){
        布局=(的LinearLayout)inflater.inflate(R.layout.fragments_layout,集装箱,假);
        mWebView =(web视图)layout.findViewById(R.id.webView1);
        WebSettings设定值= mWebView.getSettings();

        mWebView.setWebViewClient(新WebViewClient(){
            公共布尔shouldOverrideUrlLoading(web视图查看,字符串URL){
                返回true;
            }
        });

        如果(集装箱== NULL){
            返回null;
        }

        返回布局;
        }

        公共无效setWebUrl(字符串URL){
            mWebView.loadUrl(URL);
        }
}
 

PagerAdapter.java

 公共类PagerAdapter扩展FragmentPagerAdapter {

    私人列表<片断>片段;

    公共PagerAdapter(FragmentManager FM,名单,其中,片断>片段){
        超(FM);
        this.fragments =片段;
    }

    @覆盖
    公共片段的getItem(INT位置){
        返回this.fragments.get(位置);
    }

    @覆盖
    公众诠释getCount将(){
        返回this.fragments.size();
    }
}
 

编辑:

fragments_layout.xml

 < XML版本=1.0编码=UTF-8&GT?;
< LinearLayout中的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    机器人:ID =@ + ID /布局1
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent
    机器人:方向=垂直
    >

    <的WebView
        机器人:ID =@ + ID / webView1
        机器人:layout_width =match_parent
        机器人:layout_height =match_parent/>

< / LinearLayout中>
 

解决方案

我解决了这个问题。我用下面的code做了我的标签动态。

在我的 TabsFragment.java 我添加的 ID 并获得设定的 ID ID = getArguments()。调用getInt(ID);

 公共类TabsFragment扩展片段{
    的LinearLayout布局;
    的WebView mWebView;
    INT ID;

    公共静态TabsFragment的newInstance(INT ID){
        TabsFragment选项卡=新TabsFragment();
        捆绑的args =新包();
        args.putInt(身份证,身份证);
        tab.setArguments(参数);

        返回标签;
    }

    @覆盖
    公共查看onCreateView(LayoutInflater充气,容器的ViewGroup,捆绑savedInstanceState){
        布局=(的LinearLayout)inflater.inflate(R.layout.fragments_layout,集装箱,假);
        mWebView =(web视图)layout.findViewById(R.id.webView1);
        WebSettings设定值= mWebView.getSettings();

        mWebView.setWebViewClient(新WebViewClient(){
            公共布尔shouldOverrideUrlLoading(web视图查看,字符串URL){
                返回true;
            }
        });

        如果(集装箱== NULL){
            返回null;
        }

        返回布局;
    }


    @覆盖
    公共无效onActivityCreated(包savedInstanceState){
        // TODO自动生成方法存根
        super.onActivityCreated(savedInstanceState);
        如果(savedInstanceState!= NULL){
            ID = savedInstanceState.getInt(ID);
        }其他{
            。ID = getArguments()调用getInt(ID);
        }

        Log.w(ID,ID +);

        开关(ID){
        情况1:
            setWebUrl(http://www.stackoverflow.com);
            打破;
        案例3:
            setWebUrl(HTTP://www.google..com);
            打破;
        案例2:
            setWebUrl(http://www.developers.android.com);
            打破;

        默认:
            打破;
        }
    }

    公共无效setWebUrl(字符串URL){
        mWebView.loadUrl(URL);
    }
}
 

而在 PagerAdapter.java *的方法的getItem(INT位置)的*我创建的 TabsFragment 类的新实例,并返回新的实例

  @覆盖
    公共片段的getItem(INT位置){
        TabsFragment标签= TabsFragment.newInstance(位置+ 1);

        //返回this.fragments.get(位置);
        返回标签;
    }
 

它完美。

What I need to achieve is that in every Tab I want to display different websites, like

Tab 1: http://www.stackoverflow.com
Tab 2: http://www.google..com
Tab 3. http://www.developers.android.com

My problem is I can't access the WebView object to a loadUrl()

To clarify my question here's my code:

FragmentTabsPagerActivity.java

    public class FragmentTabsPagerActivity extends FragmentActivity implements TabHost.OnTabChangeListener, ViewPager.OnPageChangeListener{

        private TabHost mTabHost;
        private ViewPager mViewPager;
        private HashMap<String, TabInfo> mapTabInfo = new HashMap<String, FragmentTabsPagerActivity.TabInfo>();
        private PagerAdapter mPagerAdapter;
        ...

        private void initialiseTabHost(Bundle args) {
            mTabHost = (TabHost)findViewById(android.R.id.tabhost);
            mTabHost.setup();

            TabInfo tabInfo = null;
            Bundle bundle1 = new Bundle();
            Bundle bundle2 = new Bundle();
            Bundle bundle3 = new Bundle();

            bundle1.putInt("id", 1);
            bundle2.putInt("id", 2);
            bundle3.putInt("id", 3);

            FragmentTabsPagerActivity.addTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab1").setIndicator("Tab 1"), (tabInfo = new TabInfo("Tab1", TabsFragment.class, bundle1)));
            FragmentTabsPagerActivity.addTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab2").setIndicator("Tab 2"), (tabInfo = new TabInfo("Tab2", TabsFragment.class, bundle2)));
            FragmentTabsPagerActivity.addTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab3").setIndicator("Tab 3"), (tabInfo = new TabInfo("Tab3", TabsFragment.class, bundle3)));

            this.mapTabInfo.put(tabInfo.tag, tabInfo);
            mTabHost.setOnTabChangedListener(this);
        }
}

TabsFragment.java

public class TabsFragment extends Fragment{
    LinearLayout layout;
    WebView mWebView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        layout = (LinearLayout)inflater.inflate(R.layout.fragments_layout, container, false);
        mWebView = (WebView) layout.findViewById(R.id.webView1);
        WebSettings setting =mWebView.getSettings();

        mWebView.setWebViewClient(new WebViewClient(){
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                return true;
            }
        });

        if(container == null){
            return null;
        }

        return layout;
        }

        public void setWebUrl(String url){
            mWebView.loadUrl(url);
        }
}

PagerAdapter.java

public class PagerAdapter extends FragmentPagerAdapter{

    private List<Fragment> fragments;

    public PagerAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        this.fragments = fragments;
    }

    @Override
    public Fragment getItem(int position) {
        return this.fragments.get(position);
    }

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

EDIT:

fragments_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <WebView
        android:id="@+id/webView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>
解决方案

I solved this problem. I made the my Tab dynamic using the code below.

In my TabsFragment.java I add an id and get set id by id = getArguments().getInt("id");

public class TabsFragment extends Fragment{
    LinearLayout layout;
    WebView mWebView;
    int id;

    public static TabsFragment newInstance(int id){
        TabsFragment tab = new TabsFragment();
        Bundle args = new Bundle();
        args.putInt("id", id);
        tab.setArguments(args);

        return tab;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        layout = (LinearLayout)inflater.inflate(R.layout.fragments_layout, container, false);
        mWebView = (WebView) layout.findViewById(R.id.webView1);
        WebSettings setting =mWebView.getSettings();

        mWebView.setWebViewClient(new WebViewClient(){
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                return true;
            }
        });

        if(container == null){
            return null;
        }

        return layout;
    }


    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onActivityCreated(savedInstanceState);
        if(savedInstanceState != null){
            id = savedInstanceState.getInt("id");
        }else{
            id = getArguments().getInt("id");
        }

        Log.w("id", id+"");

        switch (id) {
        case 1:
            setWebUrl("http://www.stackoverflow.com");
            break;
        case 3:
            setWebUrl("http://www.google..com");
            break;
        case 2:
            setWebUrl("http://www.developers.android.com");
            break;

        default:
            break;
        }
    }

    public void setWebUrl(String url){
        mWebView.loadUrl(url);
    }
}

And in PagerAdapter.java *method getItem(int position)* I create a new instance of TabsFragment class and return the new instance.

@Override
    public Fragment getItem(int position) {
        TabsFragment tab = TabsFragment.newInstance(position+1);

        //return this.fragments.get(position);
        return tab;
    }

It works perfectly.

这篇关于设置的WebView使用loadURL编程是在片段类的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-26 15:23