我正在尝试构建一个函数,当在listview中单击文件夹时,它将在同一个活动中显示该文件夹中的文件列表。即用不同的数据刷新相同的列表视图。我在数据库中构建了一个类似结构的目录,并从中获取文件和文件夹列表。
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();
}
});
}
http://i.stack.imgur.com/QCIsr.png
请检查以上链接以查看该应用的快照。
现在,在单击文档文件夹时,应使用该文件夹中的文件列表刷新列表视图。我该怎么办?
答案 0 :(得分:1)
当用户点击刷新整个列表视图的列表视图时,您可以调用adapter.notifyDataSetChanged()
这将刷新您的视图而不会出现任何延迟或崩溃....这对您来说是一个更好的方法..希望这会有所帮助。