问题描述
我想建立在其中，当单击列表视图中的文件夹，将在相同的活动显示该文件夹中的文件列表的功能。即刷新不同的数据相同的列表视图。我已经建立像结构的目录数据库和得到他们的文件和文件夹列表。
I am trying to build a function in which when a folder is clicked in listview it would display the list of files inside that folder in the same activity . ie refreshing the same listview with different data. I have built a directory like structure in database and getting the list of files and folders from their.
public class SkydriveFolderList extends Activity
{
ArrayList<String> filelist1=new ArrayList<String>();
ArrayList<String> filepath=new ArrayList<String>();
ArrayList<String> isfolder=new ArrayList<String>();
ArrayList<Integer> fileid=new ArrayList<Integer>();
ListView lv;
EditText et;
ArrayAdapter<SearchResults> arrayAdapter;
Button back;
TextView path;![enter image description here][1]
public void onCreate(Bundle SkydriveFolderList)
{
Intent i = getIntent();
filelist1 = i.getStringArrayListExtra("FileList");
filepath = i.getStringArrayListExtra("FilePath");
isfolder = i.getStringArrayListExtra("isFolder");
fileid = i.getIntegerArrayListExtra("FileId");
super.onCreate(SkydriveFolderList);
ArrayList<SearchResults> searchResults = GetSearchResults();
setContentView(R.layout.filelist);
lv = (ListView)findViewById(R.id.skydrive_list);
et=(EditText)findViewById(R.id.inputSearch);
path=(TextView)findViewById(R.id.filepath);
back=(Button)findViewById(R.id.back);
arrayAdapter =new ArrayAdapter<SearchResults>(this,android.R.layout.simple_list_item_1,searchResults);
// ((ListView) arrayAdapter).setAdapter();
lv.setAdapter(new MyCustomBaseAdapter(this, searchResults));
//lv.setAdapter(arrayAdapter);
et.addTextChangedListener(new TextWatcher()
{
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3)
{
// When user changed the Text
SkydriveFolderList.this.arrayAdapter.getFilter().filter(cs);
}
@Override
public void afterTextChanged(Editable arg0)
{
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3)
{
// TODO Auto-generated method stub
}
});
lv.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View view,int position, long id)
{
Object o = parent.getItemAtPosition(position);
SearchResults fullObject = (SearchResults)o;
// prestationEco str=(prestationEco)o;//As you are using Default String Adapter
Toast.makeText(getBaseContext(),fullObject.getFilename(),Toast.LENGTH_SHORT).show();
}
});
}
请检查上面的链接，查看应用程序的快照。
Please check the above link to see the snapshot of the app.
现在在这，单击该文件夹时，列表视图应与该文件夹内的文件列表刷新。我应该怎么办呢？
Now in that,when the document folder is clicked , the listview should be refreshed with the list of files inside that folder. How should i do it ?
推荐答案
在列表视图用户点击insted的刷新整个列表视图可以调用的 adapter.notifyDataSetChanged（）这将刷新你的看法，没有任何延迟或崩溃....这将是you..Hope更好meathod这会有所帮助。
When the user click on the list view insted of refreshing the whole listview you can call adapter.notifyDataSetChanged() this will refresh your view without any lag or crash....this will be a better meathod for you..Hope this will help.
这篇关于清爽的ListView在Android的新数据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！