通过 XML 通过 Android 中的 onClick 事件获取特定条目

Question

我有一个包含项目（博客）列表的列表视图。每个项目都包含一个标题和 link。现在我希望当单击一个特定项目时我想开始 xml 解析以仅获取 link 的内容并将其显示在另一个 activity.

中

这是在按下特定项目时调用的 onListItemClick() 方法。

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    String urlBlog = mainBlogPost.get(position).link;
    Log.d(TAG,urlBlog);
    super.onListItemClick(l, v, position, id);
}

这是显示列表的onPostExecute方法

@Override
    protected void onPostExecute(List<WhosebugXmlParser.Entry> results) {
        if (results != null && mException == null) {
            String title,link,summary;
            ArrayList<HashMap<String,String>> blogPosts = new ArrayList<HashMap<String,String>>();
            for(WhosebugXmlParser.Entry result : results){
                title = result.title;
                link = result.link;
                summary = result.summary;
                HashMap<String,String> blogPost = new HashMap<String,String>();
                blogPost.put("link",link);
                blogPost.put("title",title);
                //blogPost.put("summary",summary);

                blogPosts.add(blogPost);
            }
            Collections.copy(results,mainBlogPost );   //copying for public access
            String[] keys = {"title","link"};
            int[] ids = {android.R.id.text1,android.R.id.text2};
            SimpleAdapter adapter =
                    new SimpleAdapter(MainListActivity.this,blogPosts,android.R.layout.simple_list_item_2,keys,ids);
            setListAdapter(adapter);

        } else {
            if (mException instanceof IOException){
            } else if (mException instanceof XmlPullParserException) {
            }
        }

*/}

10-31 14:32:10.612    2616-2616/com.example.talha.appforblog E/MainListActivity﹕ Exception
java.lang.IndexOutOfBoundsException: Invalid index 3, size is 0
        at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
        at java.util.ArrayList.get(ArrayList.java:308)
        at com.example.talha.appforblog.MainListActivity.onListItemClick(MainListActivity.java:86)
        at android.app.ListActivity.onItemClick(ListActivity.java:319)
        at android.widget.AdapterView.performItemClick(AdapterView.java:300)
        at android.widget.AbsListView.performItemClick(AbsListView.java:1143)
        at android.widget.AbsListView$PerformClick.run(AbsListView.java:3044)
        at android.widget.AbsListView.run(AbsListView.java:3833)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

Answer 1

Collections.copy(results,mainBlogPost );，我想你想把结果复制到mainBlogPost，但也许你误解了这个方法，像这里：[http://developer.android.com/intl/es/reference/java/util/Collections.html#copy(java.util.List, java.util.List)](http://developer.android.com/intl/es/reference/java/util/Collections.html#copy(java.util.List，java.util.List))，第一个参数是目的地第二个参数是 source .

通过 XML 通过 Android 中的 onClick 事件获取特定条目

Fetch a specific entry through XML by onClick event in Android

xml

android

android-listview