在我的应用程序中，我有一个listview（asynctask）从外部数据库获取所有用户。 listview的每一行都包含一个用户可以交互的图像。当用户按下该图像时，我尝试使用我已经拥有的数据（通过在启动意图时使用putExtra）启动新意图.Listview工作正常 - 它从数据库收集所有数据。但是，每行的putExtra值都相同。如果你能帮我解决这个问题，我将不胜感激。
代码如下; 重要的部分在下面
ImageView showlastonmap = (ImageView)v.findViewById(R.id.showlastonmap);
我尝试添加putExtra。
@Override
protected void onPostExecute(JSONObject json) {
pDialog.dismiss();
try {
if (json.getString(KEY_SUCCESS) != null) {
String res = json.getString(KEY_SUCCESS);
//Invitation count
Integer inv = json.getInt("invitation");
setNotifCount(inv);
if(Integer.parseInt(res) == 1) {
// Getting JSON Array from URL
android1 = json.getJSONArray(TAG_LOCATIONDATA);
for (int i = 0; i < android1.length(); i++) {
JSONObject c = android1.getJSONObject(i);
// Storing JSON item in a Variable
final String ver = c.getString("username");
final String dataenlem = c.getString("enlem");
final String databoylam = c.getString("boylam");
final String datazaman = c.getString("zaman");
/*----------to get City-Name from coordinates ------------- */
StringBuffer address = new StringBuffer();
Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(Double.parseDouble(dataenlem), Double.parseDouble(databoylam), 1);
if (addresses.size() > 0)
// System.out.println(addresses.get(0).getLocality());
address.append(addresses.get(0).getAddressLine(1))
.append(",").append(addresses.get(0).getAddressLine(2));
} catch (IOException e) {
e.printStackTrace();
}
String datalokasyon = address.toString();
/*----------to get City-Name from coordinates ------------- */
// Adding value HashMap key => value
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_VER, ver);
map.put("enlem", dataenlem);
map.put("boylam", databoylam);
map.put("zaman", datazaman);
map.put("lokasyon", datalokasyon);
oslist.add(map);
list = (ListView) findViewById(R.id.list);
BaseAdapter adapter = new SimpleAdapter(UserList.this, oslist,
R.layout.listview_userlist,
new String[]{TAG_VER,"zaman","lokasyon"}, new int[]{
R.id.vers,R.id.lastlocationinput,R.id.lastupdatedinput}) {
public View getView (int position, View convertView, ViewGroup parent)
{
View v = super.getView(position, convertView, parent);
ImageView showlastonmap = (ImageView)v.findViewById(R.id.showlastonmap);
showlastonmap.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent login = new Intent(getApplicationContext(),
HaritaLastSolo.class);
login.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
login.putExtra("enlem", dataenlem);
login.putExtra("boylam", databoylam);
startActivity(login);
}
});
return v;
}
};
SwingBottomInAnimationAdapter animationAdapter = new SwingBottomInAnimationAdapter(adapter);
animationAdapter.setAbsListView(list);
list.setAdapter(animationAdapter);
}
//admob
interstitial.setAdListener(new AdListener() {
public void onAdLoaded() {
displayInterstitial();
}
});
//admob
}
if(Integer.parseInt(res) == 0) {
new SweetAlertDialog(UserList.this, SweetAlertDialog.ERROR_TYPE)
.setTitleText("Oops...")
.setContentText(getString(R.string.userlist_nofriend))
.show();
}
}
else {
return;
}
}catch
(JSONException e) {
e.printStackTrace();
}
}
}
答案 0 :(得分：0)
您必须创建包含必填字段的新对象。
class Data {
String dataenlem;
String databoylam;
Data(String dataenlem, String databoylam) {
...
}
}
然后使用setTag方法设置对应于每个行数据
ImageView showlastonmap = (ImageView)v.findViewById(R.id.showlastonmap);
// add this
showlastonmap.setTag(new Data(dataenlem, databoylam));
并在你的onClick
上获取它public void onClick(View v) {
// and this
Data data = (Data)v.getTag();
Intent login = new Intent(getApplicationContext(),HaritaLastSolo.class);
login.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
login.putExtra("enlem", data.dataenlem);
login.putExtra("boylam", data.databoylam);
startActivity(login);
}
答案 1 :(得分：0)
你应该这样做：
Intent login = new Intent(getApplicationContext(),
HaritaLastSolo.class);
login.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
login.putExtra("enlem", oslist.get(position).get("enlem"));
login.putExtra("boylam", oslist.get(position).get("boylam"));
startActivity(login);