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我已成功實現SwipeRefreshLayout在我的Activity中，但某處我可能已經部署了適配器，並且這個SwipeRefreshLayout。當使用SwipeRefreshLayout刷新listView時，我得到一個更多的帶有數據的ListView
或者我需要這些嗎ProgressDialog？
也許是造成這個問題，我是初學者，所以我很感謝這裏的任何幫助。
這裏如果有人可以幫助我找到問題的代碼：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.lista_preporuka);
// Toolbabr settings
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayUseLogoEnabled(true);
getSupportActionBar().setLogo(R.drawable.ic_horor_filmovi_ikonica);
Intent newActivity2=new Intent();
setResult(RESULT_OK, newActivity2);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
noInternet();
}
}, 100);
listView = (ListView) findViewById(R.id.list);
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_layout);
adapter = new CustomListAdapter(this, movieList);
listView.setAdapter(adapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Učitavanje...");
pDialog.setCancelable(false);
pDialog.show();
swipeRefreshLayout.setOnRefreshListener(this);
/**
* Showing Swipe Refresh animation on activity create
* As animation won't start on onCreate, post runnable is used
*/
swipeRefreshLayout.post(new Runnable() {
@Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
fetchMovies();
}
}
);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String name = ((TextView) view.findViewById(R.id.title))
.getText().toString();
String opisFilma = ((TextView) view.findViewById(R.id.opis))
.getText().toString();
String urlFilm = ((TextView) view.findViewById(R.id.url))
.getText().toString();
String ocena = String.valueOf(movieList.get(position).getRating());
String godina = String.valueOf(movieList.get(position).getYear());
bitmap = ((Movie)movieList.get(position)).getThumbnailUrl();
Intent intent = new Intent(ListaPreporuka.this, MoviesSingleActivity.class);
intent.putExtra(Title, name);
intent.putExtra(opis, opisFilma);
intent.putExtra("images", bitmap);
intent.putExtra(Rating, ocena);
intent.putExtra(Year, godina);
intent.putExtra(urlMovie, urlFilm);
startActivity(intent);
overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
}
});
}
@Override
public void onRefresh() {
fetchMovies();
}
private void fetchMovies(){
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(true);
// Creating volley request obj
JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
Movie movie = new Movie();
movie.setTitle(obj.getString("title"));
movie.setOpis(obj.getString("opis"));
movie.setThumbnailUrl(obj.getString("image"));
movie.setRating(((Number) obj.get("rating"))
.doubleValue());
movie.setYear(obj.getInt("releaseYear"));
movie.setUrl(obj.getString("url"));
// Genre is json array
final JSONArray genreArry = obj.getJSONArray("genre");
ArrayList<String> genre = new ArrayList<String>();
for (int j = 0; j < genreArry.length(); j++) {
genre.add((String) genreArry.get(j));
}
movie.setGenre(genre);
// adding movie to movies array
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
}
}
adapter.notifyDataSetChanged();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(movieReq);
}
@Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
if (item.getItemId() == android.R.id.home) {
finish();
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
return true;
}
return false;
}
@Override
public void onBackPressed() {
super.onBackPressed();
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
private void noInternet() {
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
if (info != null) {
if (!info.isConnected()) {
}
}
else {
Toast.makeText(this, "No Internet Connection", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(ListaPreporuka.this, NoConnection.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
}
}
}
「我又收到一個帶數據的ListView」 - 你能解釋一下嗎？ – poss
我可能有10個項目在ListView這10個項目我從Json解析。當我用刷卡刷新刷新listView時，我得到了10個項目下面的10個項目。 –
好啊。你沒有清理你的'movieList'任何地方。 – poss