Question

我有一个应用程序，它从在线XML文件中解析XML并将其显示在列表视图中。然后，用户可以单击某个项目并查看完整故事。这一切都运行正常，但我希望用户能够保存某些文章，以便他们可以在以后或离线时阅读它们。我认为这很简单，但我找不到任何东西引导我朝着正确的方向前进。以下是显示单篇新闻文章的活动。

public class SingleActivity  extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.single_list_item);

        // getting intent data
        Intent in = getIntent();

        // Get XML values from previous intent
        String title = in.getStringExtra("name");
        String date = in.getStringExtra("date");
        String content = in.getStringExtra("content");

        // Displaying all values on the screen
        TextView lblName = (TextView) findViewById(R.id.name_label);
        TextView lblDate = (TextView) findViewById(R.id.date_label);
        TextView lblCont = (TextView) findViewById(R.id.content_label);

        lblName.setText(title);
        lblDate.setText(date);
        lblCont.setText(Html.fromHtml(content));
    }   
}

Answer 1

您可以使用SQLite数据库。为用户提供选项以保存。您可以使用按钮或图像按钮或任何可以引发事件的按钮。当引发事件时，只需将它们保存到数据库。如果您对数据库不满意，请获取示例here。您修改后的代码将如下所示。

 public class SingleActivity  extends Activity {

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.single_list_item);

        // getting intent data
        Intent in = getIntent();

        // Get XML values from previous intent
        String title = in.getStringExtra("name");
        String date = in.getStringExtra("date");
        String content = in.getStringExtra("content");

        // Displaying all values on the screen
        TextView lblName = (TextView) findViewById(R.id.name_label);
        TextView lblDate = (TextView) findViewById(R.id.date_label);
        TextView lblCont = (TextView) findViewById(R.id.content_label);

        lblName.setText(title);
        lblDate.setText(date);
        lblCont.setText(Html.fromHtml(content));

        Button b = (Button)  findViewById(R.id.savebutton);
        b.setonclicklistsener() {
             saveToDB(lblName's text, lblDate's text, lblCont's text);
        }


    }

     public void saveToDB(lblName's text, lblDate's text, lblCont's text){

           // do database stuff here    

     }

}

Answer 2

您可以将sqlite用于此特定情况http://www.codeproject.com/Articles/119293/Using-SQLite-Database-with-Android

保存所选新闻文章以供离线使用

2 个答案: