可能重複:
How can I dynamically add images to a GridView?刷新GridView控件下載後像
在我的應用程序,它允許用戶從服務器上下載圖像,並將其存儲到內部存儲。下載完成後,gridview不會更新並顯示從服務器下載的圖像。除非我重新啓動應用程序或活動通過onCreate()
。無論如何,我可以在應用程序完成下載過程後動態更新gridview?我試圖用invalidateView()刷新視圖;也不起作用。任何意見將不勝感激。
的OnCreate()
final GridView imagegrid = (GridView) findViewById(R.id.WebImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
Button loadContent = (Button) findViewById(R.id.load_btn);
loadContent.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
if(load_images<count){
load_images++;
imageAdapter.LoadImage();
imagegrid.invalidateViews();
imagegrid.setAdapter(imageAdapter);
}
else{
Toast.makeText(getApplicationContext(), "Successfully load all the content. Subscribe to get more content.", Toast.LENGTH_SHORT).show();
}
}
});
http://stackoverflow.com/questions/8053919/how-can-i-dynamically-add-images-to-a-gridview dup – wtsang02