通过ListView使用webView打开多个本地html文件 [英] Opening multiple local html files using webView via ListView

问题描述

我有一个ListView和两个html文件。当我点击我的第一个列表项时，它将我引导至HTML1文件。但是，当我点击第二个列表项目时，它仍然将我指向相同的HTML1文件而不是第二个HTML文件。
如果我点击第二个List Item，我该如何转到第二个html文件？

这是我的代码：

MainActivity.java

  public class MainActivity extends Activity {
 ListView listView ; 
 
 @Override 
 protected void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_main）; 
 
 listView =（ListView）findViewById（R.id.list）; 
 
 
 String [] values = new String [] {Story1，
Test1，Android中的简单列表视图，
创建列表视图Android示例，Android示例，
List View Source Code，List View Array Adapter，
Android示例列表视图}; 
 
 ArrayAdapter< String> adapter = new ArrayAdapter< String>（this，
 android.R.layout.simple_list_item_1，android.R.id.text1，values）; 
 
 //将适配器分配给ListView 
 listView.setAdapter（adapter）; 
 
 // ListView Item Click Listener 
 listView.setOnItemClickListener（new OnItemClickListener（）{
 $ b @Override 
 public void onItemClick（AdapterView<？>父视图，视图视图，
 int position，long id）{
 // TODO自动生成的方法存根
 // ListView单击的项目索引
 int itemPosition = position; 
 
 // ListView单击项目值
 String itemValue =（String）listView 
 .getItemAtPosition（position）; 
 if（position == 0）{
 Intent myIntent = new Intent（getApplicationContext（），
 Story.class）; 
 startActivity（myIntent）; 
} else if（position == 1）{
 Intent myIntent = new Intent getApplicationContext（），
 S tory.class）; 
 startActivity（myIntent）; 
} 
 
 //显示提醒
 Toast.makeText（
 getApplicationContext（），
Position：+ itemPosition +ListItem：
 + itemValue，Toast.LENGTH_LONG）.show（）; 
 
} 
 
}）; 
 
 
  

activity_main.xml

 < LinearLayout xmlns：android =http://schemas.android.com/apk/res/android
 xmlns：tools =http://schemas.android.com/tools
 android：layout_width =match_parent
 android：layout_height =match_parent
 android：paddingBottom =@ dimen / activity_vertical_margin
 android：paddingLeft =@ dimen / activity_horizo​​ntal_margin
 android：paddingRight =@ dimen / activity_horizo​​ntal_margin
 android：paddingTop =@ dimen / activity_vertical_margin
 tools：context =com.example.listviewandroidexample.MainActivity> 
 
< ListView 
 android：id =@ + id / list
 android：layout_height =wrap_content
 android：layout_width =match_parent> 
< / ListView> 
  

Story.java

  public class Story extends {b 
 $ b WebView web; 
 
 @Override 
 public void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_story）; 
 web =（WebView）findViewById（R.id.webView1）; 
 web.setWebViewClient（new myWebClient（））; 
 web.getSettings（）。setJavaScriptEnabled（true）; 
 int pos = getIntent（）。getIntExtra（key，0）; 
 if（pos == 0）{
 web.loadUrl（file：///android_asset/test.html）; 
} else if（pos == 1）{
 web.loadUrl（file：///android_asset/test2.html）; 
} else if（pos == 2）{
 web.loadUrl（file：///android_asset/work2.html）; 
} else if（pos == 3）{
 web.loadUrl（file：///android_asset/work3.html）; 
 
 
 
 $ b公共类myWebClient扩展WebViewClient {
 @Override 
 public void onPageStarted（WebView视图，字符串url，位图favicon ）{
 // TODO自动生成的方法存根
 super.onPageStarted（view，url，favicon）; 
 
 $ b @Override 
 public boolean shouldOverrideUrlLoading（WebView view，String url）{
 // TODO自动生成的方法存根
 
 view.loadUrl（URL）; 
返回true; 
 
 
 $ @覆盖
 public void onReceivedError（WebView视图，int errorCode，
字符串描述，String failingUrl）{
} 
 
 @Override 
 public void onPageFinished（WebView视图，String url）{
 // TODO自动生成的方法存根
 super.onPageFinished（view，url）; 
 
 
 $ b $ / code $ / pre> 
 
 
} 
 
 
 
  activity_story  
 < RelativeLayout xmlns：android =http ：//schemas.android.com/apk/res/android
 xmlns：tools =http://schemas.android.com/tools
 android：layout_width =match_parent
 android：paddingRight =@ dimen / activity_horizo​​ntal_margin
 android：paddingLeft =@ dimen / activity_horizo​​ntal_margin
 android：paddingRight =@ dimen / activity_horizo​​ntal_marginb：android：layout_height =match_parent
 android：paddingBottom = 
 android：paddingTop =@ dimen / activity_vertical_margin
 tools：context =com.motivationalstories.Story> 
 
< WebView 
 android：id =@ + id / webView1
 android：layout_width =fill_parent
 android：layout_height =fill_parent
 /> 
  
  
 
解决方案
您忘记使用puExtra， 
 
 
  if（position == 0）{
 Intent myIntent = new Intent（getApplicationContext（），
 Story.class）; 
 myIntent.putExtra（key，0）; 
 startActivity（myIntent）; 
} else if（position == 1）{
 Intent myIntent = new Intent（getApplicationContext（），
 Story.class）; 
 myIntent.putExtra（key，1）; 
 startActivity（myIntent）; 
} 
  
 
I have a ListView and two html files. When I click on my first list item it directs me to the HTML1 file . But when I click on second list item, it still directs me to the same HTML1 file instead of the second HTML file. 
How do I go to second html file if I click on second List Item?


Here's my code:

MainActivity.java
public class MainActivity extends Activity {
    ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView = (ListView) findViewById(R.id.list);


        String[] values = new String[] { "Story1",
                "Test1", "Simple List View In Android",
                "Create List View Android", "Android Example",
                "List View Source Code", "List View Array Adapter",
                "Android Example List View" };

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, android.R.id.text1, values);

        // Assign adapter to ListView
        listView.setAdapter(adapter);

        // ListView Item Click Listener
        listView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                // ListView Clicked item index
                int itemPosition = position;

                // ListView Clicked item value
                String itemValue = (String) listView
                        .getItemAtPosition(position);
                if (position == 0) {
                    Intent myIntent = new Intent(getApplicationContext(),
                            Story.class);
                    startActivity(myIntent);
                }else if (position == 1) {
                    Intent myIntent = new Intent(getApplicationContext(),
                            Story.class);
                    startActivity(myIntent);
                }

                // Show Alert
                Toast.makeText(
                        getApplicationContext(),
                        "Position :" + itemPosition + "  ListItem : "
                                + itemValue, Toast.LENGTH_LONG).show();

            }

        });
    }
    }
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.listviewandroidexample.MainActivity" >

<ListView
          android:id="@+id/list"
          android:layout_height="wrap_content"
          android:layout_width="match_parent">
</ListView>


Story.java
public class Story extends Activity {

WebView web;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_story);
    web = (WebView) findViewById(R.id.webView1);
    web.setWebViewClient(new myWebClient());
    web.getSettings().setJavaScriptEnabled(true);
    int pos = getIntent().getIntExtra("key", 0);
    if (pos == 0) {
        web.loadUrl("file:///android_asset/test.html");
    } else if (pos == 1) {
        web.loadUrl("file:///android_asset/test2.html");
    } else if (pos == 2) {
        web.loadUrl("file:///android_asset/work2.html");
    } else if (pos == 3) {
        web.loadUrl("file:///android_asset/work3.html");
    }

}

public class myWebClient extends WebViewClient {
    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        // TODO Auto-generated method stub
        super.onPageStarted(view, url, favicon);
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // TODO Auto-generated method stub

        view.loadUrl(url);
        return true;

    }

    @Override
    public void onReceivedError(WebView view, int errorCode,
            String description, String failingUrl) {
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        // TODO Auto-generated method stub
        super.onPageFinished(view, url);

    }
}
}

activity_story
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.motivationalstories.Story" >

<WebView
    android:id="@+id/webView1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />
解决方案
You forgot to use puExtra,
        if (position == 0) {
            Intent myIntent = new Intent(getApplicationContext(),
                    Story.class);
            myIntent.putExtra("key", 0);
            startActivity(myIntent);
        }else if (position == 1) {
            Intent myIntent = new Intent(getApplicationContext(),
                    Story.class);
            myIntent.putExtra("key", 1);
            startActivity(myIntent);
        }


                        
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