アプリを閉じるか、デバイスを再起動するたびに aysncTask が機能しないため、asyncTask をサービスに変更するにはどうすればよいですか。Postリクエストをphpサーバーに送信するaysncがあり、リクエストごとに画像が返されたので、1、5、10ごとに変更する壁紙の画像を選択できる設定オプションをユーザーに設定しました..... minしかし、私が言ったように、私はサービスになりたいので、ユーザーが壁紙を変更するタイミングを選択してアプリケーションを閉じる（破棄する）と、サーバーはまだここで変更する必要があります私のコードです
public class MainActivity extends AppCompatActivity {
TextView txt;
Button btn;
String forecastJsonStr;
RadioButton rd1, rd2, rd3, rd4, rd5, rd6, rd7;
Handler mHandler;
RadioGroup radioGroup;
private final static int INTERVAL = 1000*60 * 1; //1 min
private final static int INTERVAL2 = 1000*60*5; // 5 min
private final static int INTERVAL3 = 1000 * 60 * 10; // 10 min
private final static int INTERVAL4 = 1000 * 60 * 15; // 15 min
private final static int INTERVAL5 = 1000 * 60 * 30; // 30 min
private final static int INTERVAL6 = 1000 * 60 * 60; // 1 hour
private final static int INTERVAL7 = 1000 * 60 * 1440; // 1 day
private final String hostName = "http://555.555.555.555";
private final String hostRequestName = "/yay.php";
private final String hostWallpaperName = "/wallpaper/";
private static int SELECTED_INTERVAL = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt = (TextView) findViewById(R.id.textView);
rd1 = (RadioButton) findViewById(R.id.radioButton);
rd2 = (RadioButton) findViewById(R.id.radioButton2);
rd3 = (RadioButton) findViewById(R.id.radioButton3);
rd4 = (RadioButton) findViewById(R.id.radioButton4);
rd5 = (RadioButton) findViewById(R.id.radioButton5);
rd6 = (RadioButton) findViewById(R.id.radioButton6);
rd7 = (RadioButton) findViewById(R.id.radioButton7);
radioGroup = (RadioGroup) findViewById(R.id.radiogroup);
mHandler = new Handler();
btn = (Button) findViewById(R.id.button);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(rd1.isChecked()) {
SELECTED_INTERVAL = INTERVAL;
} else if (rd2.isChecked()) {
SELECTED_INTERVAL = INTERVAL2;
}
startRepeatingTask();
}
});
}
void startRepeatingTask() {
mHandlerTask.run();
}
Runnable mHandlerTask = new Runnable() {
@Override
public void run() {
new WallpaperData().execute();
mHandler.postDelayed(mHandlerTask, SELECTED_INTERVAL);
}
};
private class WallpaperData extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
try {
URL url = new URL("http://555.555.555.555/yay.php");
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.connect();
DataOutputStream wr = new DataOutputStream(
urlConnection.getOutputStream());
wr.write("method=get_random_wallpaper".getBytes());
wr.flush();
wr.close();
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");
Log.d("hey", buffer.toString());
}
if (buffer.length() == 0) {
return null;
}
forecastJsonStr = buffer.toString();
return forecastJsonStr;
} catch (IOException e) {
Log.e("PlaceholderFragment", "Error ", e);
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
e.printStackTrace();
}
}
}
}
@Override
protected void onPostExecute(final String forecastJsonStr) {
txt.setText(forecastJsonStr);
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
WallpaperManager wallpaperManager = WallpaperManager.getInstance(getApplicationContext());
try {
Bitmap result = Picasso.with(getBaseContext())
.load(hostName + hostWallpaperName + forecastJsonStr)
.get();
wallpaperManager.setBitmap(result);
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
thread.start();
super.onPostExecute(forecastJsonStr);
}
}
}