我使用的非活性类填充的FrameLayout。 我想说明，当FrameLayout里加载进度条和隐藏，一旦它的FrameLayout加载完成。
我有活动课的经验，但我无法显示或隐藏与非-activity类进度条
当应用程序被启动，我第一次调用此方法
private static void getMovies(final Activity activity, final String type, final MoviesCallback callback)
这是我的类代码
public class MoviesUtil { private static final Webb WEBB = Webb.create(); private static final String TMDB_API_MOVIES_URL = "http://api.themoviedb.org/3/movie/%s?api_key=%s&page=%s"; private static final String TMDB_API_VIDEOS_URL = "http://api.themoviedb.org/3/movie/%s/videos?api_key=%s"; private static final String TMDB_API_REVIEWS_URL = "http://api.themoviedb.org/3/movie/%s/reviews?api_key=%s"; private static final String TMDB_POSTER_URL = "https://image.tmdb.org/t/p/w185%s"; private static final String TMDB_BACKDROP_URL = "https://image.tmdb.org/t/p/w300%s"; private static final String TYPE_POPULAR = "popular"; private static final String TYPE_TOP_RATED = "top_rated"; private static final String TYPE_FAVORITES = "favorites"; private static ProgressDialog progressDialog; public static boolean isFavorite(Context context, Movie movie) { Cursor cursor = context.getContentResolver() .query(MovieContract.CONTENT_URI, null, String.format("%s = ? and %s = ?", MovieContract.MOVIE_ID, MovieContract.TYPE), new String[]{movie.getId() + "", TYPE_FAVORITES}, null ); boolean isFavorite = cursor.getCount() > 0; cursor.close(); return isFavorite; } public static boolean toggleFavorite(Context context, Movie movie) { if (isFavorite(context, movie)) { deleteMovie(context, TYPE_FAVORITES, movie); return false; } else { saveMovie(context, TYPE_FAVORITES, movie); return true; } } public static void getPopularMovies(Activity activity, MoviesCallback callback) { getMovies(activity, TYPE_POPULAR, callback); } public static void getTopRatedMovies(Activity activity, MoviesCallback callback) { getMovies(activity, TYPE_TOP_RATED, callback); } public static void getFavoritesMovies(Activity activity, MoviesCallback callback) { getMovies(activity, TYPE_FAVORITES, callback); } private static void getMovies(final Activity activity, final String type, final MoviesCallback callback) { AsyncTask.execute(new Runnable() { @Override public void run() { if (Util.isConnected(activity, false) && !type.equals(TYPE_FAVORITES)) { getMoviesFromApi(activity, type); } getMoviesFromDb(activity, type, callback); progressDialog = new ProgressDialog(activity); progressDialog.setMax(100); progressDialog.setMessage("Its loading...."); progressDialog.setTitle("ProgressDialog bar example"); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.show(); } }); } private static void getMoviesFromApi(Activity activity, String type) { String apiUrl = String.format(TMDB_API_MOVIES_URL, type, activity.getString(R.string.tmdb_api_key), 1); try { JSONArray moviesJson = WEBB.get(apiUrl) .asJsonObject() .getBody() .getJSONArray("results"); List<Movie> movies = toMovies(activity, moviesJson); deleteMovies(activity, type); saveMovies(activity, type, movies); } catch (JSONException e) { e.printStackTrace(); } } private static void getMoviesFromDb(Activity activity, String type, final MoviesCallback callback) { try { Cursor cursor = activity.getContentResolver() .query(MovieContract.CONTENT_URI, null, MovieContract.TYPE + " = ?", new String[]{type}, null ); final List<Movie> movies = toMovies(cursor); cursor.close(); activity.runOnUiThread(new Runnable() { @Override public void run() { callback.success(movies); progressDialog.dismiss(); } }); } catch (final Exception e) { activity.runOnUiThread(new Runnable() { @Override public void run() { callback.error(e); } }); } } public static void getReviewsFromApi(final Activity activity, final Movie movie, final ReviewsCallback callback) { if (Util.isConnected(activity, false)) { AsyncTask.execute(new Runnable() { @Override public void run() { String apiUrl = String.format(TMDB_API_REVIEWS_URL, movie.getId(), activity.getString(R.string.tmdb_api_key)); final List<Review> reviews = new ArrayList<>(); try { JSONArray reviewsJson = WEBB.get(apiUrl) .asJsonObject() .getBody() .getJSONArray("results"); reviews.addAll(toReviews(reviewsJson)); } catch (final Exception e) { activity.runOnUiThread(new Runnable() { @Override public void run() { callback.error(e); } }); } if (reviews.isEmpty()) { Review review = new Review(); review.setContent(activity.getString(R.string.no_review_found)); reviews.add(review); } activity.runOnUiThread(new Runnable() { @Override public void run() { callback.success(reviews); } }); } }); } else { Review review = new Review(); review.setContent(activity.getString(R.string.conn_internet)); final List<Review> reviews = new ArrayList<>(); reviews.add(review); activity.runOnUiThread(new Runnable() { @Override public void run() { callback.success(reviews); } }); } } private static void saveMovie(final Context context, final String type, final Movie movie) { AsyncTask.execute(new Runnable() { @Override public void run() { List<Movie> movies = new ArrayList<>(); movies.add(movie); saveMovies(context, type, movies); } }); } private static void saveMovies(Context context, String type, List<Movie> movies) { if (movies != null) { ContentValues[] moviesValues = new ContentValues[movies.size()]; for (int i = 0; i < movies.size(); i++) { try { Movie movie = movies.get(i); ContentValues movieValues = new ContentValues(); movieValues.put(MovieContract.MOVIE_ID, movie.getId()); movieValues.put(MovieContract.TYPE, type); movieValues.put(MovieContract.TITLE, movie.getTitle()); movieValues.put(MovieContract.OVERVIEW, movie.getOverview()); movieValues.put(MovieContract.POSTER_URL, movie.getPosterUrl()); movieValues.put(MovieContract.BACKDROP_URL, movie.getBackdropUrl()); movieValues.put(MovieContract.TRAILER_URL, movie.getTrailerUrl()); movieValues.put(MovieContract.RELEASE_DATE, Util.toDbDate(movie.getReleaseDate())); movieValues.put(MovieContract.RATING, movie.getRating()); movieValues.put(MovieContract.ADULT, movie.isAdult() ? 1 : 0); moviesValues[i] = movieValues; } catch (Exception ignore) { } } context.getContentResolver() .bulkInsert(MovieContract.CONTENT_URI, moviesValues); } } private static void deleteMovie(final Context context, final String type, final Movie movie) { AsyncTask.execute(new Runnable() { @Override public void run() { context.getContentResolver() .delete(MovieContract.CONTENT_URI, MovieContract.MOVIE_ID + " = ? and " + MovieContract.TYPE + " = ?", new String[]{movie.getId() + "", type}); } }); } private static void deleteMovies(final Context context, final String type) { AsyncTask.execute(new Runnable() { @Override public void run() { context.getContentResolver() .delete(MovieContract.CONTENT_URI, MovieContract.TYPE + " = ?", new String[]{type}); } }); } private static List<Movie> toMovies(Cursor cursor) { List<Movie> movies = new ArrayList<>(); while (cursor.moveToNext()) { Movie movie = new Movie(); movie.setId(cursor.getInt( cursor.getColumnIndex(MovieContract.MOVIE_ID))); movie.setTitle(cursor.getString( cursor.getColumnIndex(MovieContract.TITLE))); movie.setOverview(cursor.getString( cursor.getColumnIndex(MovieContract.OVERVIEW))); movie.setPosterUrl(cursor.getString( cursor.getColumnIndex(MovieContract.POSTER_URL))); movie.setBackdropUrl(cursor.getString( cursor.getColumnIndex(MovieContract.BACKDROP_URL))); movie.setTrailerUrl(cursor.getString( cursor.getColumnIndex(MovieContract.TRAILER_URL))); movie.setReleaseDate(Util.toDate(cursor.getString( cursor.getColumnIndex(MovieContract.RELEASE_DATE)))); movie.setRating(cursor.getFloat( cursor.getColumnIndex(MovieContract.RATING))); movie.setAdult(cursor.getInt( cursor.getColumnIndex(MovieContract.ADULT)) == 1); movies.add(movie); } return movies; } private static List<Movie> toMovies(Context context, JSONArray jsonMovies) { List<Movie> movies = new ArrayList<>(); if (jsonMovies != null) { for (int i = 0; i < jsonMovies.length(); i++) { try { JSONObject jsonMovie = jsonMovies.getJSONObject(i); int movieId = jsonMovie.getInt("id"); Movie movie = new Movie(); movie.setId(movieId); movie.setTitle(jsonMovie.getString("title")); movie.setOverview(jsonMovie.getString("overview")); movie.setPosterUrl(String.format(TMDB_POSTER_URL, jsonMovie.getString("poster_path"))); movie.setBackdropUrl(String.format(TMDB_BACKDROP_URL, jsonMovie.getString("backdrop_path"))); movie.setTrailerUrl(getTrailerUrl(context, movieId)); movie.setReleaseDate(Util.toDate(jsonMovie.getString("release_date"))); movie.setRating((float) jsonMovie.getDouble("vote_average")); movie.setAdult(jsonMovie.getBoolean("adult")); movies.add(movie); } catch (Exception e) { e.printStackTrace(); } } } return movies; } private static List<Review> toReviews(JSONArray jsonReviews) { List<Review> reviews = new ArrayList<>(); if (jsonReviews != null) { for (int i = 0; i < jsonReviews.length(); i++) { try { JSONObject jsonReview = jsonReviews.getJSONObject(i); Review review = new Review(); review.setAuthor(jsonReview.getString("author")); review.setContent(jsonReview.getString("content")); reviews.add(review); } catch (Exception e) { e.printStackTrace(); } } } return reviews; } private static String getTrailerUrl(Context context, int movieId) { String apiUrl = String.format(TMDB_API_VIDEOS_URL, movieId, context.getString(R.string.tmdb_api_key)); try { JSONArray trailersJson = WEBB.get(apiUrl) .asJsonObject() .getBody() .getJSONArray("results"); for (int i = 0; i < trailersJson.length(); i++) { JSONObject trailerJson = trailersJson.getJSONObject(i); if (trailerJson.getString("site").toLowerCase().equals("youtube")) { return "https://youtube.com/watch?v=" + trailerJson.getString("key"); } } return ""; } catch (Exception e) { e.printStackTrace(); return ""; } } } 我怎样才能做到这一点。
任何帮助，提前感谢和Thankss。
我的日志猫错误
09-05 20:10:57.639 2183-2891/? E/GpsXtraDownloader: No XTRA servers were specified in the GPS configuration 09-05 20:10:58.319 9101-9101/com.nepalpolice.cinemaghar E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering 09-05 20:10:58.359 9101-9101/com.nepalpolice.cinemaghar E/Iconics: Wrong icon name: 2131165281 09-05 20:10:58.600 9101-9101/com.nepalpolice.cinemaghar E/RecyclerView: No adapter attached; skipping layout No adapter attached; skipping layout No adapter attached; skipping layout 09-05 20:10:58.790 9101-9101/com.nepalpolice.cinemaghar E/RecyclerView: No adapter attached; skipping layout No adapter attached; skipping layout No adapter attached; skipping layout 09-05 20:11:06.758 9101-9101/com.nepalpolice.cinemaghar E/AndroidRuntime: FATAL EXCEPTION: main Process: com.nepalpolice.cinemaghar, PID: 9101 java.lang.NullPointerException at com.nepalpolice.cinemaghar.util.MoviesUtil$2.run(MoviesUtil.java:138) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5018) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) at dalvik.system.NativeStart.main(Native Method) 
