引用会从服务器得到son,我想要用的值是categoryid,比较详细的在下边的代码中。
我怎么才能用从json取得的 categoryid 来用条件改变imageview?
我的ImageView在ImageAdapter类里边
我想要用条件语句
if(catetgoryid == 1){
imageview.setImageResource(R.drawable.image1)
} elseif (categoryid == 2 {
imageview.setImageResource(R.drawable.image2)
} else {
imageview.setImageResorce(R.drawable.image3)
}
JSON
{
"count": 54,
"data": [
{
"userid": "24",
"cardid": "114",
"title": "meeting now!",
"carddate": "2012-12-26",
"categoryid": "2",
"cardimage": "http://xxx.xxx/data/card/thum/9589266f7983dbe72ff8481800f51ef9.jpg",
"public": "1",
"user": {
"user_id": "24",
"firstname": "kong",
"lastname": "kea",
"email": "xxx",
"picture": "http://xxx.xxx/data/profiles/thum/default.png",
"friend_status": "NOT_FRIEND"
}
}
]}
MainActivity.这个是用来获取json categoryid的
@Override
protected Void doInBackground(String... params) {
String url = "http://xxx.xxx.xxx/card/all/30/0/?token=57LzEsmBeykLbDCD04wTgK9WWV2XjJY0XBdqVU0HQvjIdu5EtTWOT1IQ1AYNwxt6Q5bG6FG73uvzLQSDGAIezwc8VcopEp0s63uzbdVgLSfts0TLmuVDOgyfn4lX";
JSONArray data = null;
try {
JSONObject jsonObject = new JSONObject(getJSONUrl(url));
MyArrList = new ArrayList<HashMap<String, Object>>();
HashMap<String, Object> map;
data = jsonObject.getJSONArray("data");
for (int i = 0; i < data.length(); i++) {
JSONObject c = data.getJSONObject(i);
map = new HashMap<String, Object>();
// Thumbnail Get ImageBitmap To Object
map.put("cardimage", (String) c.getString("cardimage"));
map.put("ImageThumBitmap",(Bitmap) loadBitmap(c.getString("cardimage")));
map.put("categoryid",(String)c.getString("categoryid")); // use it for condition
MyArrList.add(map);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
在这用条件
public class ImageAdapter extends BaseAdapter {
private Context context;
private ArrayList<HashMap<String, Object>> MyArr = new ArrayList<HashMap<String, Object>>();
public ImageAdapter(Context c,ArrayList<HashMap<String, Object>> myArrList) {
context = c;
MyArr = myArrList;
}
public int getCount() {
return MyArr.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
viewHolder = new ViewHolder();
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = inflater.inflate(R.layout.grid_item, null);
}
viewHolder.categoryCard = (ImageView) convertView.findViewById(R.id.category_card);
// ====================== use codition here ===============
viewHolder.categoryCard.setImageResource(R.drawable.card_beauty);
viewHolder.imageView = (ImageView) convertView.findViewById(R.id.imageView1);
try {
viewHolder.imageView.setImageBitmap((Bitmap) MyArr.get(position).get("ImageThumBitmap"));
} catch (Exception e) {
viewHolder.imageView.setImageResource(android.R.drawable.ic_menu_report_image);
}
return convertView;
}
}
在你的getview()方法中,试试这样。在下边的方法中,你和categoryid一起发送了imageview://通过Integer.parseInt(categoryId);转换the category id成integer,或者你可以在你的if条件语句中比较一下,就像categoryId.equals("1")等等。
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
viewHolder = new ViewHolder();
.....................
........................
viewHolder.imageView = (ImageView) convertView.findViewById(R.id.imageView1);
putDefaultImage(categoryid, viewHolder.imageView);
.............................
}
private void putDefaultImage(int categoryid, ImageView imageview)
{
if(catetgoryid == 1){
imageview.setImageResource(R.drawable.image1)
} elseif (categoryid == 2) {
imageview.setImageResource(R.drawable.image2)
} else {
imageview.setImageResorce(R.drawable.image3)
}
希望这个能帮到你
版权声明:本文内容由阿里云实名注册用户自发贡献,版权归原作者所有,阿里云开发者社区不拥有其著作权,亦不承担相应法律责任。具体规则请查看《阿里云开发者社区用户服务协议》和《阿里云开发者社区知识产权保护指引》。如果您发现本社区中有涉嫌抄袭的内容,填写侵权投诉表单进行举报,一经查实,本社区将立刻删除涉嫌侵权内容。