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Run android service via remote command

I have the following code that runs in a service where it captures screenshots from Android. What technology could I use to send a remote command to this service to execute the task? I don't want it to run from a MainActivity button. Firebase cloud messaging ? Websocket ?
ScreenCaptureService.java
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Notification;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.media.Image;
import android.media.ImageReader;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.os.Build;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.view.Display;
import android.view.OrientationEventListener;
import android.view.WindowManager;
import androidx.annotation.RequiresApi;
import androidx.core.util.Pair;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Objects;
public class ScreenCaptureService extends Service {
private static final String TAG = "ScreenCaptureService";
private static final String RESULT_CODE = "RESULT_CODE";
private static final String DATA = "DATA";
private static final String ACTION = "ACTION";
private static final String START = "START";
private static final String STOP = "STOP";
private static final String SCREENCAP_NAME = "screencap";
private static int IMAGES_PRODUCED;
private MediaProjection mMediaProjection;
private String mStoreDir;
private ImageReader mImageReader;
private Handler mHandler;
private Display mDisplay;
private VirtualDisplay mVirtualDisplay;
private int mDensity;
private int mWidth;
private int mHeight;
private int mRotation;
private OrientationChangeCallback mOrientationChangeCallback;
public static Intent getStartIntent(Context context, int resultCode, Intent data) {
Intent intent = new Intent(context, ScreenCaptureService.class);
intent.putExtra(ACTION, START);
intent.putExtra(RESULT_CODE, resultCode);
intent.putExtra(DATA, data);
return intent;
}
public static Intent getStopIntent(Context context) {
Intent intent = new Intent(context, ScreenCaptureService.class);
intent.putExtra(ACTION, STOP);
return intent;
}
private static boolean isStartCommand(Intent intent) {
return intent.hasExtra(RESULT_CODE) && intent.hasExtra(DATA)
&& intent.hasExtra(ACTION) && Objects.equals(intent.getStringExtra(ACTION), START);
}
private static boolean isStopCommand(Intent intent) {
return intent.hasExtra(ACTION) && Objects.equals(intent.getStringExtra(ACTION), STOP);
}
private static int getVirtualDisplayFlags() {
return DisplayManager.VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY | DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC;
}
private class ImageAvailableListener implements ImageReader.OnImageAvailableListener {
#Override
public void onImageAvailable(ImageReader reader) {
FileOutputStream fos = null;
Bitmap bitmap = null;
try (Image image = mImageReader.acquireLatestImage()) {
if (image != null) {
Image.Plane[] planes = image.getPlanes();
ByteBuffer buffer = planes[0].getBuffer();
int pixelStride = planes[0].getPixelStride();
int rowStride = planes[0].getRowStride();
int rowPadding = rowStride - pixelStride * mWidth;
// create bitmap
bitmap = Bitmap.createBitmap(mWidth + rowPadding / pixelStride, mHeight, Bitmap.Config.ARGB_8888);
bitmap.copyPixelsFromBuffer(buffer);
// write bitmap to a file
fos = new FileOutputStream(mStoreDir + "/myscreen_" + IMAGES_PRODUCED + ".png");
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
IMAGES_PRODUCED++;
Log.e(TAG, "captured image: " + IMAGES_PRODUCED);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
if (bitmap != null) {
bitmap.recycle();
}
}
}
}
private class OrientationChangeCallback extends OrientationEventListener {
OrientationChangeCallback(Context context) {
super(context);
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public void onOrientationChanged(int orientation) {
final int rotation = mDisplay.getRotation();
if (rotation != mRotation) {
mRotation = rotation;
try {
// clean up
if (mVirtualDisplay != null) mVirtualDisplay.release();
if (mImageReader != null) mImageReader.setOnImageAvailableListener(null, null);
// re-create virtual display depending on device width / height
createVirtualDisplay();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private class MediaProjectionStopCallback extends MediaProjection.Callback {
#Override
public void onStop() {
Log.e(TAG, "stopping projection.");
mHandler.post(new Runnable() {
#Override
public void run() {
if (mVirtualDisplay != null) mVirtualDisplay.release();
if (mImageReader != null) mImageReader.setOnImageAvailableListener(null, null);
if (mOrientationChangeCallback != null) mOrientationChangeCallback.disable();
mMediaProjection.unregisterCallback(MediaProjectionStopCallback.this);
}
});
}
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
// create store dir
File externalFilesDir = getExternalFilesDir(null);
if (externalFilesDir != null) {
mStoreDir = externalFilesDir.getAbsolutePath() + "/screenshots/";
File storeDirectory = new File(mStoreDir);
if (!storeDirectory.exists()) {
boolean success = storeDirectory.mkdirs();
if (!success) {
Log.e(TAG, "failed to create file storage directory.");
stopSelf();
}
}
} else {
Log.e(TAG, "failed to create file storage directory, getExternalFilesDir is null.");
stopSelf();
}
// start capture handling thread
new Thread() {
#Override
public void run() {
Looper.prepare();
mHandler = new Handler();
Looper.loop();
}
}.start();
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (isStartCommand(intent)) {
// create notification
Pair<Integer, Notification> notification = NotificationUtils.getNotification(this);
startForeground(notification.first, notification.second);
// start projection
int resultCode = intent.getIntExtra(RESULT_CODE, Activity.RESULT_CANCELED);
Intent data = intent.getParcelableExtra(DATA);
startProjection(resultCode, data);
} else if (isStopCommand(intent)) {
stopProjection();
stopSelf();
} else {
stopSelf();
}
return START_NOT_STICKY;
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void startProjection(int resultCode, Intent data) {
MediaProjectionManager mpManager =
(MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
if (mMediaProjection == null) {
mMediaProjection = mpManager.getMediaProjection(resultCode, data);
if (mMediaProjection != null) {
// display metrics
mDensity = Resources.getSystem().getDisplayMetrics().densityDpi;
WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
mDisplay = windowManager.getDefaultDisplay();
// create virtual display depending on device width / height
createVirtualDisplay();
// register orientation change callback
mOrientationChangeCallback = new OrientationChangeCallback(this);
if (mOrientationChangeCallback.canDetectOrientation()) {
mOrientationChangeCallback.enable();
}
// register media projection stop callback
mMediaProjection.registerCallback(new MediaProjectionStopCallback(), mHandler);
}
}
}
private void stopProjection() {
if (mHandler != null) {
mHandler.post(new Runnable() {
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public void run() {
if (mMediaProjection != null) {
mMediaProjection.stop();
}
}
});
}
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#SuppressLint("WrongConstant")
private void createVirtualDisplay() {
// get width and height
mWidth = Resources.getSystem().getDisplayMetrics().widthPixels;
mHeight = Resources.getSystem().getDisplayMetrics().heightPixels;
// start capture reader
mImageReader = ImageReader.newInstance(mWidth, mHeight, PixelFormat.RGBA_8888, 2);
mVirtualDisplay = mMediaProjection.createVirtualDisplay(SCREENCAP_NAME, mWidth, mHeight,
mDensity, getVirtualDisplayFlags(), mImageReader.getSurface(), null, mHandler);
mImageReader.setOnImageAvailableListener(new ImageAvailableListener(), mHandler);
}
}
MainActivity.java
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.media.Image;
import android.media.ImageReader;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.widget.Button;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Date;
import app.mobile.secure.appservice.api.AppUtil;
import app.mobile.secure.appservice.configuracao.Permissao;
import app.mobile.secure.appservice.service.MonitorService;
public class MainActivity extends AppCompatActivity {
private MediaProjectionManager projectionManager;
private static final int REQUEST_CODE = 100;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
projectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
startActivityForResult(projectionManager.createScreenCaptureIntent(), REQUEST_CODE);
}
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
startService(app.mobile.secure.appservice.service.ScreenCaptureService.getStartIntent(this, resultCode, data));
startProjection();
}
}
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void startProjection() {
MediaProjectionManager mProjectionManager =
(MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
startActivityForResult(mProjectionManager.createScreenCaptureIntent(), REQUEST_CODE);
}
}

Try using firebase Messaging in conjunction with your backend.
You can read about it here:
https://firebase.google.com/docs/cloud-messaging/?authuser=0#implementation_paths
https://firebase.google.com/docs/cloud-messaging/js/client?authuser=0

Opening Intent a Second time from Service doesn't work

I am creating a little remote controller for my Android tablet. Basically I have a server that sends json containing a Youtube video ID.
In my android app I have a working background service, and I keep checking the id in a loop and whenever I get a new video id I try to pass it to the ACTION_VIEW intent. It only works once the app is launched. but whenever I send a new value, the service detects it and outputs it as log but the Youtube app doesn't get the new video.
Here is my code..
What am I missing exactly?
package com.example.testytbot;
import android.app.Activity;
import android.app.Application;
import android.app.IntentService;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.net.Uri;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.Provider;
import java.util.Timer;
import java.util.TimerTask;
import javax.net.ssl.HttpsURLConnection;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Build;
import android.os.Handler;
import android.os.IBinder;
import android.os.SystemClock;
import android.support.annotation.RequiresApi;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.Toast;
public class YT extends Service {
private static final String DEFAULT_EXTRA = "";
private final IBinder mBinder = new LocalBinder();
public class LocalBinder extends Binder {
YT getService() {
return YT.this;
}
}
public String oldvidID = "";
public int onStartCommand(Intent intent, int flags, int startId) {
new Timer().scheduleAtFixedRate(new TimerTask() {
#RequiresApi(api = Build.VERSION_CODES.O)
#Override
public void run() {
String url = "https://mywebsite.com/tv/vid";
JSONObject jObject = null;
try {
jObject = new JSONObject(getJSON(url));
try {
String theId = jObject.getString("id");
//System.out.println("THE ID IIIIIIIIIIIIIIIS:::: " + theId);
if (!theId.equals("") && !oldvidID.equals(theId)) {
System.out.println("Server ID :::: " + theId);
System.out.println("\nAPP ID :::: " + theId);
Intent intent;
intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube://" + theId));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
try {
getBaseContext().startActivity(intent);
} catch(ActivityNotFoundException e) {
System.out.println(e);
}
oldvidID = theId;
}
} catch (JSONException e) {
e.printStackTrace();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, 0, 4000);
return START_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
public static String getJSON(String url) {
HttpsURLConnection con = null;
try {
URL u = new URL(url);
con = (HttpsURLConnection) u.openConnection();
con.connect();
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
return sb.toString();
} catch (MalformedURLException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
} finally {
if (con != null) {
try {
con.disconnect();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
return null;
}
}
Thank you!

Unable to fetch file from google drive

I am working on a project where user can upload a document to my server. This file can be selected either from local storage or a cloud storage ,say google drive. When i click on the file from file chooser all i am receiving is an account info and doc info as a uri, When i tried to fetch doc from this URI it is showing FileNotFound . I have gone through Drive API also but It is a bit confusing to me. Following are the points i came accross while trying Google Drive API:
1. How to select file from local storage.
2. How do I get FileId form the selected file.
I tried with the following code snippet:
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.setType("**/");
startActivityForResult(intent, 1000);
and In onActivityResult
#Override
public void onActivityResult(int requestCode, int resultCode,
Intent resultData) {
// The ACTION_OPEN_DOCUMENT intent was sent with the request code
// READ_REQUEST_CODE. If the request code seen here doesn't match, it's the
// response to some other intent, and the code below shouldn't run at all.
if (requestCode == 1000 && resultCode == Activity.RESULT_OK) {
// The document selected by the user won't be returned in the intent.
// Instead, a URI to that document will be contained in the return intent
// provided to this method as a parameter.
// Pull that URI using resultData.getData().
Uri uri = null;
if (resultData != null) {
uri = resultData.getData();
Log.i("URI", "Uri: " + uri.toString());
try {
readTextFromUri(uri);
getMimeType(this,uri);
} catch (IOException e) {
e.printStackTrace();
}
// showImage(uri);
}
}
}
private String readTextFromUri(Uri uri) throws IOException {
// FileInputStream fileInputStream=new FileInputStream(uri.)
InputStream inputStream = getContentResolver().openInputStream(uri);
BufferedReader reader = new BufferedReader(new InputStreamReader(
inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line);
}
// fileInputStream.close();
// parcelFileDescriptor.close();
return stringBuilder.toString();
}
Conclusion:
Can anyone please send me a link how to upload a document(I should even check the extension of the document) from both local storage and Google drive in a File chooser.

package com.example.ayyappaboddupalli.gdrive;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.Scope;
import com.google.android.gms.drive.Drive;
import com.google.android.gms.drive.DriveClient;
import com.google.android.gms.drive.DriveContents;
import com.google.android.gms.drive.DriveFile;
import com.google.android.gms.drive.DriveId;
import com.google.android.gms.drive.DriveResourceClient;
import com.google.android.gms.drive.OpenFileActivityOptions;
import com.google.android.gms.drive.query.Filters;
import com.google.android.gms.drive.query.SearchableField;
import com.google.android.gms.tasks.Continuation;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.android.gms.tasks.TaskCompletionSource;
import com.google.api.services.drive.model.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashSet;
import java.util.Set;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "Google drive";
private static final String SIGN_IN = "Sign In";
private static final String DOWNLOAD_FILE = "Download file";
private static final int REQUEST_CODE_SIGN_IN = 0;
private static final int REQUEST_CODE_OPEN_ITEM = 1;
private static final int REQUEST_WRITE_STORAGE = 112;
private GoogleSignInAccount signInAccount;
private Set<Scope> requiredScopes;
private DriveClient mDriveClient;
private DriveResourceClient mDriveResourceClient;
private OpenFileActivityOptions openOptions;
private TaskCompletionSource<DriveId> mOpenItemTaskSource;
private java.io.File storageDir;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView( R.layout.activity_main);
initialize();
requestPermission();
signInAccount = GoogleSignIn.getLastSignedInAccount(this);
if (signInAccount != null && signInAccount.getGrantedScopes().containsAll(requiredScopes)) {
initializeDriveClient(signInAccount);
} else {
// onDriveClientReady();
signIn();
}
Button button=(Button)findViewById(R.id.Submit);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onDriveClientReady();
}
});
}
private void showMessage(String message) {
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUEST_CODE_SIGN_IN:
if (resultCode == RESULT_OK) {
Task<GoogleSignInAccount> getAccountTask = GoogleSignIn.getSignedInAccountFromIntent(data);
if (getAccountTask.isSuccessful()) {
initializeDriveClient(getAccountTask.getResult());
showMessage("Sign in successfully.");
// binding.btnSubmit.setText(DOWNLOAD_FILE);
} else {
showMessage("Sign in failed.");
}
} else {
showMessage("Sign in failed.");
}
break;
case REQUEST_CODE_OPEN_ITEM:
if (resultCode == RESULT_OK) {
DriveId driveId = data.getParcelableExtra(OpenFileActivityOptions.EXTRA_RESPONSE_DRIVE_ID);
mOpenItemTaskSource.setResult(driveId);
} else {
mOpenItemTaskSource.setException(new RuntimeException("Unable to open file"));
}
break;
}
}
private void initialize() {
requiredScopes = new HashSet<>(2);
requiredScopes.add(Drive.SCOPE_FILE);
requiredScopes.add(Drive.SCOPE_APPFOLDER);
openOptions = new OpenFileActivityOptions.Builder()
.setSelectionFilter(Filters.eq(SearchableField.MIME_TYPE, "application/pdf"))
.setActivityTitle("Select file")
.build();
}
private void initializeDriveClient(GoogleSignInAccount signInAccount) {
mDriveClient = Drive.getDriveClient(getApplicationContext(), signInAccount);
mDriveResourceClient = Drive.getDriveResourceClient(getApplicationContext(), signInAccount);
}
private void signIn() {
GoogleSignInOptions signInOptions = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestScopes(Drive.SCOPE_FILE)
.requestScopes(Drive.SCOPE_APPFOLDER)
.build();
GoogleSignInClient googleSignInClient = GoogleSignIn.getClient(this, signInOptions);
startActivityForResult(googleSignInClient.getSignInIntent(), REQUEST_CODE_SIGN_IN);
}
private void onDriveClientReady() {
mOpenItemTaskSource = new TaskCompletionSource<>();
mDriveClient.newOpenFileActivityIntentSender(openOptions)
.continueWith(new Continuation<IntentSender, Void>() {
#Override
public Void then(#NonNull Task<IntentSender> task) throws Exception {
startIntentSenderForResult(
task.getResult(), REQUEST_CODE_OPEN_ITEM, null, 0, 0, 0);
return null;
}
});
Task<DriveId> tasks = mOpenItemTaskSource.getTask();
tasks.addOnSuccessListener(this,
new OnSuccessListener<DriveId>() {
#Override
public void onSuccess(DriveId driveId) {
retrieveContents(driveId.asDriveFile());
}
})
.addOnFailureListener(this, new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
showMessage("File not selected.");
}
});
}
private void retrieveContents(final DriveFile file) {
// [START open_file]
final Task<DriveContents> openFileTask = mDriveResourceClient.openFile(file, DriveFile.MODE_READ_ONLY);
// [END open_file]
// [START read_contents]
openFileTask.continueWithTask(new Continuation<DriveContents, Task<Void>>() {
#Override
public Task<Void> then(#NonNull Task<DriveContents> task) throws Exception {
DriveContents contents = task.getResult();
Log.v(TAG, "File name : " + contents.toString());
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
InputStream input = contents.getInputStream();
try {
java.io.File file = new java.io.File(getExternalFilesDir(null), "umesh.pdf");
Log.v(TAG, storageDir + "");
OutputStream output = new FileOutputStream(file);
try {
try {
byte[] buffer = new byte[4 * 1024]; // or other buffer size
int read;
while ((read = input.read(buffer)) != -1) {
output.write(buffer, 0, read);
}
output.flush();
} finally {
output.close();
}
} catch (Exception e) {
e.printStackTrace();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
try {
input.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
showMessage("Download file successfully.");
return mDriveResourceClient.discardContents(contents);
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
showMessage("Unable to download file.");
}
});
// [END read_contents]
}
private void requestPermission() {
String dirPath = getFilesDir().getAbsolutePath() + java.io.File.separator + "PDF";
storageDir = new java.io.File(dirPath);
if (!storageDir.exists())
storageDir.mkdirs();}}
//in gradle
implementation 'com.google.android.gms:play-services:11.8.0'
compile 'com.google.android.gms:play-services-auth:11.8.0'
compile 'com.google.api-client:google-api-client:1.23.0'
compile 'com.google.oauth-client:google-oauth-client-jetty:1.23.0'
compile 'com.google.apis:google-api-services-drive:v3-rev110-1.23.0'

Android volley sending data twice with intentserivce?

package com.newsak.services;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import android.app.IntentService;
import android.content.Intent;
import android.os.Bundle;
import android.os.ResultReceiver;
import android.util.Log;
import com.android.volley.Cache;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.newsak.controller.NewsakContoller;
import com.newsak.data.FeedItem;
import com.newsak.parse.XmlParser;
import com.newsak.constants.SportsUrls;
public class FetchBackgroundData extends IntentService {
private List<FeedItem> feedItems;
public static List<FeedItem> largeFeedItems;
boolean cachedFalg = false;
public static final int FINISHED_STATE = 0;
ResultReceiver receiver;
int counter = 0 ;
public String [] MY_URLS = SportsUrls.SPORTS_URLS;
public FetchBackgroundData() {
super("FetchBackgroundData");
}
#Override
protected void onHandleIntent(Intent intent) {
receiver = intent.getParcelableExtra("receiver");
GO();
}
public void GO() {
feedItems = new ArrayList<FeedItem>();
largeFeedItems = new ArrayList<FeedItem>();
// check for the cache
Cache cache = NewsakContoller.getInstance().getRequestQueue().getCache();
List<Cache.Entry> entry = new ArrayList<Cache.Entry>();
for(String url : MY_URLS){
entry.add(cache.get(url));
}
for (Cache.Entry en : entry) {
if (en != null) {
// fetch the data from the cache ...
try {
String data = new String(en.data, "UTF-8");
feedItems = XmlParser.getItem(data);
largeFeedItems.addAll(feedItems);
cachedFalg = true;
Log.d("cache_start", "cache start");
if(feedItems.size() > 0){
counter++;
feedItems = null ;
if(counter == 7){
receiver.send(FINISHED_STATE, Bundle.EMPTY);
}
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
if (!cachedFalg) {
for(String url : MY_URLS){
getRequest(url);
}
Log.d("without_cache_start", "cache start");
}
}
public void getRequest(String url) {
StringRequest request = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
public void onResponse(String result) {
feedItems = XmlParser.getItem(result);
largeFeedItems.addAll(feedItems);
if(feedItems.size() > 0){
counter++;
feedItems = null ;
if(counter == 7){
receiver.send(FINISHED_STATE, Bundle.EMPTY);
}
}
}
}, new Response.ErrorListener() {
public void onErrorResponse(VolleyError arg0) {
}
});
//handle return twice data
request.setRetryPolicy(new DefaultRetryPolicy( 0,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES ,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
NewsakContoller.getInstance().addToRequestQueue(request);
}
}
this is my intentservice get the data by xml parser .
so can any one help me to figure what the problem is ?? I used this
Android volley sending data twice
but this solution doesn't wotk with my code

Your this code
request.setRetryPolicy(new DefaultRetryPolicy(
0,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
Replace this code
request.setRetryPolicy(new DefaultRetryPolicy(
30000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

Pass values of array inbetween classes

I am using a spinner when selected starts an intent and the class that is started gets and XML feed and displays it.
I am trying to call a different XML file based on what is selected by the user. I am not sure how the value can be passed to my XMLfunctions.java and once selected can the other classes reference that data?
HERE is my Eclipse Package Download
My thourghts were to have a multidimensional array with the titles for the spinner and the coinsiding XML url:
package com.patriotsar;
import android.app.Activity;
import android.content.Intent;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.Toast;
public class patriosar extends Activity {
private Button goButton;
private String array_spinner[];
String url = "http://www.patriotsar.com";
Intent i = new Intent(Intent.ACTION_VIEW);
Uri u = Uri.parse(url);
Context context = this;
Spinner areaspinner;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
array_spinner=new String[4];
array_spinner[0]="George Washington","gw.xml";
array_spinner[1]="BENJAMIN FRANKLIN","bf.xml";
array_spinner[2]="THOMAS JEFFERSON","tj.xml";
array_spinner[3]="PATRICK HENRY","ph.xml";
goButton = (Button)findViewById(R.id.goButton);
areaspinner = (Spinner) findViewById(R.id.areaspinner);
ArrayAdapter<String> adapter =
new ArrayAdapter<String> (this,
android.R.layout.simple_spinner_item,array_spinner);
areaspinner.setAdapter(adapter);
goButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v){
try {
// Start the activity
i.setData(u);
startActivity(i);
} catch (ActivityNotFoundException e) {
// Raise on activity not found
Toast.makeText(context, "Browser not found.", Toast.LENGTH_SHORT);
}
}
});
areaspinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
int item = areaspinner.getSelectedItemPosition();
if(item != 0){
Intent myIntent = new Intent(patriosar.this, ShowXMLPAR.class);
startActivityForResult(myIntent, 0);
}
else {
// finish();
}
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
}
I then have a listener that calls an intent ShowXMLPAR.class when an item other then default is selected. The ShowXMLPAR class calls a function from XMLfunctions.java class and then shows the data that is returned. So the second value in the selected array item needs to be passed to to both pages I guess.
ShowXMLPAR.java:
package com.patriotsar;
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import com.patriotsar.XMLfunctions;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class ShowXMLPAR extends ListActivity {
private Button backButton;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listplaceholder);
backButton = (Button)findViewById(R.id.backButton);
backButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view){
Intent myIntent = new Intent(view.getContext(), patriosar.class);
startActivityForResult(myIntent, 0);
}
});
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
String xml = XMLfunctions.getXML();
Document doc = XMLfunctions.XMLfromString(xml);
int numResults = XMLfunctions.numResults(doc);
if((numResults <= 0)){
Toast.makeText(ShowXMLPAR.this, "Geen resultaten gevonden", Toast.LENGTH_LONG).show();
finish();
}
NodeList nodes = doc.getElementsByTagName("result");
for (int i = 0; i < nodes.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element)nodes.item(i);
map.put("main_content", XMLfunctions.getValue(e, "content"));
map.put("name", XMLfunctions.getValue(e, "name"));
mylist.add(map);
}
//
ListAdapter adapter = new SimpleAdapter(ShowXMLPAR.this, mylist , R.layout.listlayout,
new String[] {"main_content", "name" },
new int[] { R.id.item_title, R.id.item_subtitle });
setListAdapter(adapter);
}
}
XMLfunctions.java:
package com.patriotsar;
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
public class XMLfunctions {
public final static Document XMLfromString(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
System.out.println("XML parse error: " + e.getMessage());
return null;
} catch (SAXException e) {
System.out.println("Wrong XML file structure: " + e.getMessage());
return null;
} catch (IOException e) {
System.out.println("I/O exeption: " + e.getMessage());
return null;
}
return doc;
}
/** Returns element value
* #param elem element (it is XML tag)
* #return Element value otherwise empty String
*/
public final static String getElementValue( Node elem ) {
Node kid;
if( elem != null){
if (elem.hasChildNodes()){
for( kid = elem.getFirstChild(); kid != null; kid = kid.getNextSibling() ){
if( kid.getNodeType() == Node.TEXT_NODE ){
return kid.getNodeValue();
}
}
}
}
return "";
}
public static String getXML(){
String line = null;
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpPost = new HttpGet("http://www.patriotsar.com/patriot_quotes.xml");
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
line = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
} catch (MalformedURLException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
} catch (IOException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
}
return line;
}
public static int numResults(Document doc){
Node results = doc.getDocumentElement();
int res = -1;
try{
res = Integer.valueOf(results.getAttributes().getNamedItem("count").getNodeValue());
}catch(Exception e ){
res = -1;
}
return res;
}
public static String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return XMLfunctions.getElementValue(n.item(0));
}
}
Sorry I am still learning but am excited to get into more advanced (for me) programming. Any Help would be awesome.
As of now the app works but calls the same xml no matter what.

I'm not following your description very well, but if you are wanting to pass data between Activities via Intents then make sure the data you pass can either be included as an Extra, or if you prefer to send actual objects then make sure your objects implement the Parcelable interface.