listview刷新

class MyAdapter extends ArrayAdapter<String> {
		private int mResource;
		public MyAdapter(Context context, int textViewResourceId,
				String[] objects) {
			super(context, textViewResourceId, objects);
			arrays = objects;
			mResource = textViewResourceId;
			mInflater = LayoutInflater.from(ListViewRefreshActivity.this);
			// TODO Auto-generated constructor stub
		}
		String[] arrays ;
		private LayoutInflater mInflater;
		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return arrays.length;
		}
		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return super.getItemId(position);
		}
		@Override
		public String getItem(int position) {
			// TODO Auto-generated method stub
			return super.getItem(position);
		}
		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
	        TextView view;
			// TODO Auto-generated method stub
			if(convertView == null) {
				view = (TextView)mInflater.inflate(mResource, parent,false);
			}else {
				view = (TextView)convertView;
			}
			view.setText(arrays[position].toString());
			return view;
		}
		public void addDatas(String[] datas) {
			String[] newArrays = new String[arrays.length+datas.length];
			for(int i=0;i<arrays.length;i++) {
				newArrays[i] = arrays[i];
			}
			for(int i=0;i<datas.length;i++) {
				newArrays[arrays.length+i] = datas[i];
			}
			arrays = newArrays;
			notifyDataSetChanged();
		}
	}
到时候你只要调用adapter.addDatas方法就可以了。如下：
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode, resultCode, data);
		String[] result = data.getStringArrayExtra("arrays");
		adapter.addDatas(result);
	}
实现的效果是，在list中增加几个item，当然你也可以根据需要更改逻辑，从而达到想要的效果，比如，替换新的item或者删除item，这都需要在自定义的adapter中实现。

listview刷新,布布扣,bubuko.com

listview刷新

原文：http://www.cnblogs.com/liuyang-love/p/android.html