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私はWebサーバーを呼び出してJSONデータをプルダウンして解析し、SQLiteデータベースに保存して情報を表示するアプリケーションを作成していますユーザー。最初にロードされたときにCursorAdapterが画像を表示しない
アプリの最初のページに映画のポスターが表示されるだけです。アプリケーションが新しくインストールされるたびに、GridViewは更新されませんが、閉じて再オープンすると、必要に応じてムービーポスターが表示されます。私はそれが新しくインストールされたときに更新されないことを間違っているかどうかはわかりません。ここで
は私のコードです。
MainActivityFrament
public void update() {
Log.e(LOG_TAG, "In onUpdate");
FetchMovieTask movieTask = new FetchMovieTask(getContext());
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
String userChoice = sharedPreferences.getString(getString(R.string.pref_sort_key), getString(R.string.pref_sort_value_mostpop));
movieTask.execute(userChoice);
progressBar.setVisibility(View.VISIBLE);
}
@Override
public void onStart() {
super.onStart();
Log.e(LOG_TAG, "In onStart");
update();
}
@Override
public void onActivityCreated(Bundle savedInstanceState){
Log.e(LOG_TAG, "In onActivityCreated");
getLoaderManager().initLoader(MOVIE_LOADER, null, this);
super.onActivityCreated(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.e(LOG_TAG, "In onCreateView");
Cursor cursor = getActivity().getContentResolver().query(MovieContract.MovieEntry.CONTENT_URI, null, null, null, null);
customAdapter = new CustomAdapter(getActivity(), cursor, 0);
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
progressBar = (ProgressBar) rootView.findViewById(R.id.progressBar);
gridView = (GridView) rootView.findViewById(R.id.gridView_movies);
gridView.setAdapter(customAdapter);
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Cursor cursor = (Cursor) parent.getItemAtPosition(position);
Log.i(LOG_TAG, "set movie object values");
int _id = cursor.getInt(cursor.getColumnIndex(MovieContract.MovieEntry._ID));
if (cursor != null) {
Intent intent = new Intent(getActivity(), MovieDetailActivity.class);
intent.putExtra("movieId", _id);
Log.i(LOG_TAG, "About to start intent");
startActivity(intent);
}
}
});
return rootView;
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
Log.e(LOG_TAG, "In onCreateLoader");
return new CursorLoader(
getActivity(),
MovieContract.MovieEntry.CONTENT_URI,
MOVIE_COLUMNS,
null,
null,
null
);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
Log.e(LOG_TAG, "In onLoadFinished");
customAdapter.swapCursor(data);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
Log.e(LOG_TAG, "In onLoadReset");
customAdapter.swapCursor(null);
}
CursorAdapter
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
Log.e(LOG_TAG, "In newView()");
View view = LayoutInflater.from(context).inflate(R.layout.list_image_movie, parent, false);
return view;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
Log.e(LOG_TAG, "in bindView()");
String title =cursor.getString(cursor.getColumnIndex(MovieContract.MovieEntry.COLUMN_MOVIE_TITLE));
Log.e(LOG_TAG, "Movie Title - " + title);
ImageView iv = (ImageView) view.findViewById(R.id.list_movie_pics_imageview);
int columIndex = cursor.getColumnIndex(MovieContract.MovieEntry.COLUMN_POSTER);
Bitmap image = Utility.getImage(cursor.getBlob(columIndex));
iv.setImageBitmap(image);
}
AsyncTask
@Override
protected Void doInBackground(String... params) {
Log.e(LOG_TAG, "In doInBackground");
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
String movieJsonStr = null;
try {
final String MOVIE_BASE_URL = "https://api.themoviedb.org/3/discover/movie?";
final String SORT_PARAM = "sort_by";
final String APIKEY_PARAM = "api_key";
Uri builtUri = Uri.parse(MOVIE_BASE_URL).buildUpon()
.appendQueryParameter(SORT_PARAM, params[0])
.appendQueryParameter(APIKEY_PARAM, BuildConfig.OPEN_MOVIE_MAP_API_KEY)
.build();
URL url = new URL(builtUri.toString());
Log.v(LOG_TAG, "Built URI :" + builtUri.toString());
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
return null;
}
movieJsonStr = buffer.toString();
parseMovieData(new JSONObject(movieJsonStr));
checkDBValues(mContext);
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(LOG_TAG, "Error closing stream", e);
}
}
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
Log.e(LOG_TAG, "In onPostExecute");
customAdapter.notifyDataSetChanged();
MainActivityFragment.progressBar.setVisibility(View.GONE);
}
public void parseMovieData(JSONObject movieData) {
Log.e(LOG_TAG, "In parseMovieData");
try {
JSONArray movieArray = movieData.getJSONArray("results");
Time dayTime = new Time();
dayTime.setToNow();
int julianStartDay = Time.getJulianDay(System.currentTimeMillis(), dayTime.gmtoff);
if (movieArray != null) {
for (int i = 0; i < movieArray.length(); i++) {
JSONObject movies = movieArray.getJSONObject(i);
long dateTime = dayTime.setJulianDay(julianStartDay + i);
Bitmap moviePoster = Utility.getBitmapFromURL(CustomAdapter.IMAGE_BASE_URL + movies.getString(CustomAdapter.IMAGE_PATH));
String moviePosterUrl = CustomAdapter.IMAGE_BASE_URL + movies.getString(CustomAdapter.IMAGE_PATH);
String movieTitle = movies.getString(CustomAdapter.MOVIE_TITLE);
String movieDescription = movies.getString(CustomAdapter.MOVIE_DESCRIPTION);
double movieRating = movies.getDouble(CustomAdapter.MOVIE_RATING);
String movieReleaseDate = movies.getString(CustomAdapter.MOVIE_RELEASE_DATE);
ContentValues movieValues = new ContentValues();
movieValues.put(MovieContract.MovieEntry.COLUMN_POSTER_URL, moviePosterUrl);
movieValues.put(MovieContract.MovieEntry.COLUMN_POSTER, Utility.getBytes(moviePoster));
movieValues.put(MovieContract.MovieEntry.COLUMN_RELEASE_DATE, movieReleaseDate);
movieValues.put(MovieContract.MovieEntry.COLUMN_DESCRIPTION, movieDescription);
movieValues.put(MovieContract.MovieEntry.COLUMN_MOVIE_RATING, movieRating);
movieValues.put(MovieContract.MovieEntry.COLUMN_MOVIE_TITLE, movieTitle);
movieValues.put(MovieContract.MovieEntry.COLUMN_DATE, dateTime);
if (MovieProvider.rowExists(movieTitle)) {
continue;
}
insertMoviesToDB(movieValues);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public void insertMoviesToDB(ContentValues movieValues){
Log.e(LOG_TAG, "In insertMoviesToDB");
MovieProvider.mOpenHelper.getReadableDatabase().insert(MovieContract.MovieEntry.TABLE_NAME, null, movieValues);
}
public void checkDBValues(Context context) {
Log.e(LOG_TAG, "In checkDBValues");
Cursor cursor = context.getContentResolver().query(
MovieContract.MovieEntry.CONTENT_URI,
null,
null,
null,
null
);
int count = 0;
while (cursor.moveToNext()) {
count++;
}
Log.i(LOG_TAG, "Got " + count + " values from the DB");
}
MainLayout
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivityFragment">
<GridView
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:verticalSpacing="0dp"
android:horizontalSpacing="0dp"
android:id="@+id/gridView_movies"
android:layout_gravity="center"
android:stretchMode="columnWidth"
android:numColumns="2"/>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/progressBar"
android:layout_gravity="center"
android:visibility="gone" />
私はすべての関連情報が含まれていると思います。エラーが発生していないので、関連するログは表示されません。追加情報が必要な場合は、尋ねてください。私はそれを提供します。
は、この上の任意の情報を大幅にonPostExecuteで
あなたの発射時に非同期ですか？ – Sush
私はコードにそれを含めました。私はonStartメソッドで呼び出す。 – Dan
R.layout.list_image_movie、親はこのレイアウトを投稿する。 – Sush