[英]How to return a single object from URL with AsyncTask
我想嘗試在我的 JSON 響應中返回一個 object。 這是我得到的響應，我希望應用程序只顯示電影名稱而不是所有內容。 我希望它只返回名稱，例如"Casino"而不是"film_name": "Casino" 。
{
"films": [
{
"film_id": 3139,
"imdb_id": 112641,
"film_name": "Casino",
"release_dates": [
{
"release_date": "1995-11-28",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "18 ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/18.png",
"age_advisory": "strong violence"
}
],
"film_trailer": null,
"synopsis_long": "Robert DeNiro, Sharon Stone and Joe Pesci star in director Martin Scorsese's riveting look at how blind ambition, white-hot passion and 24-karat greed toppled an empire. Las Vegas 1973 is the setting for this fact-based story about the Mob's multi-million dollar casino operation - where fortunes and lives were made and lost with a roll of the dice.",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "global",
"medium": {
"film_image": "https://image.movieglu.com/3139/003139h1.jpg",
"width": 199,
"height": 300
}
}
}
}
},
{
"film_id": 7257,
"imdb_id": 80455,
"film_name": "The Blues Brothers",
"release_dates": [
{
"release_date": "2009-07-24",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "15 ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/15.png",
"age_advisory": ""
}
],
"film_trailer": "https://trailer.movieglu.com/7257_high.mp4",
"synopsis_long": "Jake and Elwood Blues endeavor to raise $5,000 for their childhood parrish by putting their old band back together uand taking their show on the road. While touring, they manage to wreak havoc on the entire city of Chicago and much of the midwest.",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/7257/GBR_007257h0.jpg",
"width": 200,
"height": 300
}
},
"2": {
"image_orientation": "portrait",
"region": "global",
"medium": {
"film_image": "https://image.movieglu.com/7257/AUS_007257h0.jpg",
"width": 164,
"height": 300
}
}
}
}
},
{
"film_id": 12486,
"imdb_id": 94336,
"film_name": "Withnail & I",
"release_dates": [
{
"release_date": "2007-09-07",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "15 ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/15.png",
"age_advisory": ""
}
],
"film_trailer": null,
"synopsis_long": "",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/12486/GBR_012486h0.jpg",
"width": 200,
"height": 300
}
}
}
}
},
{
"film_id": 279925,
"imdb_id": 7549996,
"film_name": "Judy",
"release_dates": [
{
"release_date": "2019-10-04",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "12A ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/12a.png",
"age_advisory": "scenes of drug misuse, infrequent strong language"
}
],
"film_trailer": "https://trailer.movieglu.com/279925_uk_high_V3.mp4",
"synopsis_long": "Winter 1968 and showbiz legend Judy Garland arrives in Swinging London to perform a five-week sold-out run at The Talk of the Town. It is 30 years since she shot to global stardom in The Wizard of Oz, but if her voice has weakened, its dramatic intensity has only grown. As she prepares for the show, battles with management, charms musicians and reminisces with friends and adoring fans, her wit and warmth shine through. Even her dreams of love seem undimmed as she embarks on a whirlwind romance with Mickey Deans, her soon-to-be fifth husband. Featuring some of her best-known songs, the film celebrates the voice, the capacity for love, and the sheer pizzazz of \"the world's greatest entertainer.\"",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/279925/GBR_279925h0.jpg",
"width": 202,
"height": 300
}
}
},
"still": {
"1": {
"image_orientation": "landscape",
"medium": {
"film_image": "https://image.movieglu.com/279925/279925h2.jpg",
"width": 300,
"height": 200
}
}
}
}
},
{
"film_id": 80849,
"imdb_id": 77631,
"film_name": "Grease Sing-A-Long",
"release_dates": [
{
"release_date": "2010-07-13",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "PG ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/pg.png",
"age_advisory": ""
}
],
"film_trailer": null,
"synopsis_long": "Rydell High's most famous graduating class is going back to school. A newly restored print brings the highest-grossing musical of all time, \"Grease\" (1978), to the big screen as a sing-along. Join Danny and Sandy with your own crew of T-Birds and Pink Ladies for a carnival ride back to those amazing summer nights!",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "global",
"medium": {
"film_image": "https://image.movieglu.com/80849/080849h1.jpg",
"width": 200,
"height": 300
}
}
},
"still": {
"1": {
"image_orientation": "landscape",
"medium": {
"film_image": "https://image.movieglu.com/80849/080849h2.jpg",
"width": 300,
"height": 200
}
}
}
}
},
{
"film_id": 281047,
"imdb_id": 7715070,
"film_name": "Horrible Histories: The Movie",
"release_dates": [
{
"release_date": "2019-07-26",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "PG ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/pg.png",
"age_advisory": "mild comic violence, injury detail, rude humour, language"
}
],
"film_trailer": "https://trailer.movieglu.com/281047_uk_high.mp4",
"synopsis_long": "Friends, Romans, Celts lend us your ears. The all-conquering Romans rule the civilised world and that includes the stain that is Britain. While the young Emperor Nero must battle his scheming mother Agrippina for ultimate power, Celt queen Boudicca gathers an army in Britain to repel the rotten Romans. Mixed up in this battle for liberation are the teenage Atti, a reluctant Roman soldier, and Orla, a young Celt with dreams of becoming a warrior like Boudicca. Will they fall on opposite sides or forge a friendship in the chaos of Celtic-inspired rebellion?",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/281047/GBR_281047h0.jpg",
"width": 200,
"height": 300
}
}
},
"still": {
"1": {
"image_orientation": "landscape",
"medium": {
"film_image": "https://image.movieglu.com/281047/281047h2.jpg",
"width": 300,
"height": 200
}
}
}
}
},
{
"film_id": 2129,
"imdb_id": 45152,
"film_name": "Singin' in the Rain",
"release_dates": [
{
"release_date": "2019-10-18",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "U ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/u.png",
"age_advisory": "very mild comic violence"
}
],
"film_trailer": "https://trailer.movieglu.com/2129_high.mp4",
"synopsis_long": "Gene Kelly, Debbie Reynolds and Donald O'Connor star in Singin' in the Rain, one of the greatest and most successful musicals ever filmed - filled with memorable songs, lavish routines and Kelly's fabulous song-and-dance number performed in the rain.\n\nSet during the advent of \"talkies,\" Don Lockwood has risen to stardom during Hollywood's silent-movie era - paired with the beautiful, jealous and dumb Lina Lamont. And when Lockwood becomes attracted to young studio singer Kathy Selden, Lamont has her fired.\n\nBut with the introduction of talking pictures, Lockwood finds his career in jeopardy after audiences laugh when they hear Lamont speak in her shrill voice for the first time... until the studio decides to use Selden to dub her voice.",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/2129/GBR_002129h0.jpg",
"width": 200,
"height": 300
}
},
"2": {
"image_orientation": "portrait",
"region": "global",
"medium": {
"film_image": "https://image.movieglu.com/2129/AUS_002129h0.jpg",
"width": 220,
"height": 300
}
}
},
"still": {
"1": {
"image_orientation": "landscape",
"medium": {
"film_image": "https://image.movieglu.com/2129/002129h2.jpg",
"width": 300,
"height": 200
}
}
}
}
},
{
"film_id": 6548,
"imdb_id": 38669,
"film_name": "The Killers (1946)",
"release_dates": [
{
"release_date": "1946-09-16",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "PG ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/pg.png",
"age_advisory": ""
}
],
"film_trailer": null,
"synopsis_long": "",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/6548/GBR_006548h0.jpg",
"width": 200,
"height": 300
}
}
}
}
},
{
"film_id": 4705,
"imdb_id": 96928,
"film_name": "Bill & Ted's Excellent Adventure",
"release_dates": [
{
"release_date": "1989-08-25",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "PG ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/pg.png",
"age_advisory": "Contains mild language and violence"
}
],
"film_trailer": null,
"synopsis_long": "Bill Preston and Ted Logan are two totally excellent dudes facing one most heinous history exam. With the help of Rufus an ultra-cool messenger in a time traveling phone booth, the triumphant two-some bag a bevy of historical heavy weights like the \"Bodacious Philosopher Socrates, \"One Very Excellent Barbarian\" Genghis Khan, the \"Short Dead Dude\" Napoleon and Noah's Wife Joan of Arc to stage the most hysterical high school project ever. History's about to be rewritten by two guys who can't even spell.",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/4705/GBR_004705h0.jpg",
"width": 200,
"height": 300
}
}
}
}
},
{
"film_id": 3855,
"imdb_id": 93191,
"film_name": "Wings of Desire",
"release_dates": [
{
"release_date": "1990-10-01",
"notes": "GBR"
}
],
"age_rating": [
{
"rating": "12 ",
"age_rating_image": "https://assets.movieglu.com/age_rating_logos/uk/12.png",
"age_advisory": "Contains one use of strong language"
}
],
"film_trailer": null,
"synopsis_long": "\"Wings of Desire\" is one of cinema's loveliest city symphonies. Bruno Ganz is Damiel, an angel perched atop buildings high over Berlin who can hear the thoughts fears, hopes, dreams of all the people living below. But when he falls in love with a beautiful trapeze artist, he is willing to give up his immortality and come back to earth to be with her. Made not long before the fall of the Berlin wall, this stunning tapestry of sounds and images, shot in black and white and color by the legendary Henri Alekan, is movie poetry. And it forever made the name Wim Wenders synonymous with film art.",
"images": {
"poster": {
"1": {
"image_orientation": "portrait",
"region": "UK",
"medium": {
"film_image": "https://image.movieglu.com/3855/GBR_003855h0.jpg",
"width": 200,
"height": 300
}
}
},
"still": {
"1": {
"image_orientation": "landscape",
"medium": {
"film_image": "https://image.movieglu.com/3855/003855h2.jpg",
"width": 300,
"height": 200
}
}
}
}
}
],
"status": {
"count": 10,
"state": "OK",
"method": "filmsNowShowing",
"message": null,
"request_method": "GET",
"version": "WALS_2v200",
"territory": "UK",
"device_datetime_sent": "2020-05-17T08:30:17.360Z",
"device_datetime_used": "2020-05-17 08:30:17"
}
}
public class GetFilmsTask extends AsyncTask {
//String films = "UNDEFINED";
private TextView textView;
StringBuilder builder = new StringBuilder();
public GetFilmsTask(TextView textView) {
this.textView = textView;
}
@Override
protected String doInBackground(Object[] objects) {
URL url = null;
HttpsURLConnection urlConnection = null;
try{
url = new URL("https://api-gate2.movieglu.com/filmsNowShowing/?n=10");
urlConnection = (HttpsURLConnection) url.openConnection();
urlConnection.setRequestProperty("api-version", "v200");
urlConnection.setRequestProperty("Authorization", "*****************************");
urlConnection.setRequestProperty("client", "*******");
urlConnection.setRequestProperty("x-api-key", "v***********************************");
urlConnection.setRequestProperty("device-datetime", "2018-09-14T08:30:17.360Z");
urlConnection.setRequestProperty("territory", "UK");
}catch(Exception ex){
}
try {
InputStream stream = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(stream));
//here is a temporary string to hold each line that is read from the reader
String inputLine;
while ((inputLine = bufferedReader.readLine()) != null) {
builder.append(inputLine);
//builder.append("film_name");
}
/*JSONObject topLevel = new JSONObject(builder.toString());
JSONObject filmName = topLevel.getJSONObject("film_name");
films = filmName.getString("film_name");*/
}catch(Exception ex){
System.out.println(ex.toString());
}
finally {
//closes the connection.
urlConnection.disconnect();
}
return null;
}
@Override
protected void onPostExecute(Object o) {
textView.setText("Current Film: " + builder);
Log.d("good", String.valueOf(builder));
}
}
您肯定會想花一些時間查看AsyncTask https://developer.android.com/reference/android/os/AsyncTask 文檔以了解它的工作原理。 老實說，您的大部分時間將花在閱讀 API 文檔以了解您的開發生活中的 rest - 還要注意 AsyncTask 已被棄用。
最令人困惑的事情之一是，您正在查找電影列表，但僅將 ONE 標題設置為文本視圖，因此您想查看一些設計明智的東西。
但是由於您有 JSON 並且您需要獲取電影，您可能想要設置如下：
// com.example.film.Film
// Create your film class which does the work
public class Film {
private long id; // film_id
private long imdbId; // imdb_id
private String title; // name also where film.getTitle() comes from
...
}
您需要查看 JSON 解析，但您的代碼看起來已經開始涉足（已注釋掉），所以請繼續這樣做。
現在你想創建一個 AsyncTask 來獲取你的電影列表
/**
* The generics you use here can be read about on the AsyncTask documentation page.
* String - is going to be your String[] args for the request
* Integer - is going to be what you use to update progress (although you can skip for now)
* List<Film> - is going to be the response that you get from doInBackground and passed into onPostExecute.
*/
public class GetFilmsAsyncTask extends AsyncTask<String,Integer,List<Film>> {
@Override
protected List<Film> doInBackground(String[] objects) {
// Use your String[] to build your URL, maybe page size, maybe filter, etc.
return filmList; // Parsed from Json
}
@Override
protected void onPostExecute(List<Film> films) {
// Now do stuff with the film list you got
}
}
我猜這更接近您想要的，但是仍然缺少一些東西：-您可能希望將此數據提供給某種列表視圖，而不是 TextView-您需要查看您的 JSON 處理
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