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Android ble scan don't find devices

I'm trying to connect to an ble device, so I've implemented a bluetooth ble scan activity for this, but this does not work on my tablet (Archos 70 3G with android 7.0) but works in my phone (Xiaomi Note 8 Pro). I allowed location and bluetooth both devices. What is the problem? The code of the activity:
package myapp
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.Manifest;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import myapp.R;
public class BluetoothListActivity extends Activity {
private BluetoothAdapter mBluetoothAdapter;
// private BluetoothAdapter mBtAdapter;
private TextView mEmptyList;
public static final String TAG = "DeviceListActivity";
List<BluetoothDevice> deviceList;
private DeviceAdapter deviceAdapter;
private ServiceConnection onService = null;
Map<String, Integer> devRssiValues;
private static final long SCAN_PERIOD = 10000; //scanning for 10 seconds
private Handler mHandler;
private boolean mScanning;
#Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] Results) {
if (requestCode == 1) {
Toast.makeText(this, "Git gud", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1) {
Toast.makeText(this, "git gud", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "onCreate");
setContentView(R.layout.activity_device_list);
android.view.WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
layoutParams.gravity = Gravity.TOP;
layoutParams.y = 200;
mHandler = new Handler();
requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 1);
// Use this check to determine whether BLE is supported on the device. Then you can
// selectively disable BLE-related features.
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText(this, "Ble not supported", Toast.LENGTH_SHORT).show();
finish();
}
// Initializes a Bluetooth adapter. For API level 18 and above, get a reference to
// BluetoothAdapter through BluetoothManager.
final BluetoothManager bluetoothManager =
(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBluetoothAdapter = bluetoothManager.getAdapter();
// Checks if Bluetooth is supported on the device.
if (mBluetoothAdapter == null) {
Toast.makeText(this, "Not supported", Toast.LENGTH_SHORT).show();
finish();
return;
}
populateList();
mEmptyList = (TextView) findViewById(R.id.empty);
Button cancelButton = (Button) findViewById(R.id.btn_cancel);
cancelButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (mScanning == false) scanLeDevice(true);
else finish();
}
});
}
private void populateList() {
/* Initialize device list container */
Log.d(TAG, "populateList");
deviceList = new ArrayList<BluetoothDevice>();
deviceAdapter = new DeviceAdapter(this, deviceList);
devRssiValues = new HashMap<String, Integer>();
ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
newDevicesListView.setAdapter(deviceAdapter);
newDevicesListView.setOnItemClickListener(mDeviceClickListener);
scanLeDevice(true);
}
private void scanLeDevice(final boolean enable) {
final Button cancelButton = (Button) findViewById(R.id.btn_cancel);
if (enable) {
// Stops scanning after a pre-defined scan period.
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
mScanning = false;
mBluetoothAdapter.stopLeScan(mLeScanCallback);
cancelButton.setText(R.string.scan);
}
}, SCAN_PERIOD);
mScanning = true;
mBluetoothAdapter.startLeScan(mLeScanCallback);
cancelButton.setText(R.string.cancel);
} else {
mScanning = false;
mBluetoothAdapter.stopLeScan(mLeScanCallback);
cancelButton.setText(R.string.scan);
}
}
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
#Override
public void onLeScan(final BluetoothDevice device, final int rssi, byte[] scanRecord) {
runOnUiThread(new Runnable() {
#Override
public void run() {
addDevice(device, rssi);
}
});
}
};
private void addDevice(BluetoothDevice device, int rssi) {
boolean deviceFound = false;
for (BluetoothDevice listDev : deviceList) {
if (listDev.getAddress().equals(device.getAddress())) {
deviceFound = true;
break;
}
}
devRssiValues.put(device.getAddress(), rssi);
if (!deviceFound) {
deviceList.add(device);
mEmptyList.setVisibility(View.GONE);
deviceAdapter.notifyDataSetChanged();
}
}
#Override
public void onStart() {
super.onStart();
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
}
#Override
public void onStop() {
super.onStop();
mBluetoothAdapter.stopLeScan(mLeScanCallback);
}
#Override
public void onDestroy() {
super.onDestroy();
mBluetoothAdapter.stopLeScan(mLeScanCallback);
}
private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
BluetoothDevice device = deviceList.get(position);
mBluetoothAdapter.stopLeScan(mLeScanCallback);
Bundle b = new Bundle();
b.putString(BluetoothDevice.EXTRA_DEVICE, deviceList.get(position).getAddress());
Intent result = new Intent();
result.putExtras(b);
setResult(Activity.RESULT_OK, result);
Toast.makeText(getApplicationContext(), "Connected to " + deviceList.get(position).getName(), Toast.LENGTH_SHORT).show();
finish();
}
};
public void onPause() {
super.onPause();
scanLeDevice(false);
}
class DeviceAdapter extends BaseAdapter {
Context context;
List<BluetoothDevice> devices;
LayoutInflater inflater;
public DeviceAdapter(Context context, List<BluetoothDevice> devices) {
this.context = context;
inflater = LayoutInflater.from(context);
this.devices = devices;
}
#Override
public int getCount() {
return devices.size();
}
#Override
public Object getItem(int position) {
return devices.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewGroup vg;
if (convertView != null) {
vg = (ViewGroup) convertView;
} else {
vg = (ViewGroup) inflater.inflate(R.layout.device_list_element, null);
}
BluetoothDevice device = devices.get(position);
final TextView tvadd = ((TextView) vg.findViewById(R.id.address));
final TextView tvname = ((TextView) vg.findViewById(R.id.name));
final TextView tvpaired = (TextView) vg.findViewById(R.id.paired);
final TextView tvrssi = (TextView) vg.findViewById(R.id.rssi);
tvrssi.setVisibility(View.VISIBLE);
byte rssival = (byte) devRssiValues.get(device.getAddress()).intValue();
if (rssival != 0) {
tvrssi.setText("Rssi = " + String.valueOf(rssival));
}
tvname.setText(device.getName());
tvadd.setText(device.getAddress());
if (device.getBondState() == BluetoothDevice.BOND_BONDED) {
Log.i(TAG, "device::" + device.getName());
tvname.setTextColor(Color.BLACK);
tvadd.setTextColor(Color.BLACK);
tvpaired.setTextColor(Color.GRAY);
tvpaired.setVisibility(View.VISIBLE);
tvpaired.setText(R.string.paired);
tvrssi.setVisibility(View.VISIBLE);
tvrssi.setTextColor(Color.BLACK);
} else {
tvname.setTextColor(Color.BLACK);
tvadd.setTextColor(Color.BLACK);
tvpaired.setVisibility(View.GONE);
tvrssi.setVisibility(View.VISIBLE);
tvrssi.setTextColor(Color.BLACK);
}
return vg;
}
}
private void showMessage(String msg) {
Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
}
}

Losing state of the activity when navigating from notification to activity

I have an activity named Player Activity in which I am streaming music with the help of MediaPlayer API. Whenever my activity is created a notification is displayed which has some basic control of the music player.
So when I tap on my notification it jumps back to the Player Activity, but the state of the activity is lost.
Before tapping on notification :
After tapping on notification :
Here is the code of my notification's Pending Intent
Intent notifyIntent = new Intent(context, PlayerActivity.class);
notifyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
notifyIntent.setAction("android.intent.action.MAIN");
notifyIntent.addCategory("android.intent.category.LAUNCHER");
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notifyIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Here is the code for PlayerActivity.java :
package com.example.user.musicplayer;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.MediaMetadataRetriever;
import android.media.MediaPlayer;
import android.os.AsyncTask;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import com.squareup.picasso.Picasso;
import java.util.concurrent.TimeUnit;
import de.hdodenhof.circleimageview.CircleImageView;
public class PlayerActivity extends AppCompatActivity implements MediaPlayer.OnBufferingUpdateListener,MediaPlayer.OnCompletionListener{
private static Button btn_play_pause;
private Button btnToggleRepeat;
private Button btnStop;
private SeekBar seekBar;
private TextView textView;
public static MediaPlayer mediaPlayer;
private int mediaFileLength;
private int realtimeLength;
private String musicUrl;
private String imageUrl;
final Handler handler = new Handler();
private boolean isRepeat;
private CircleImageView musicImage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
Log.d("TAG", "onCreate");
NotificationGenerator.customBigNotification(getApplicationContext());
musicUrl = getIntent().getStringExtra("musicUrl");
imageUrl = getIntent().getStringExtra("imageUrl");
seekBar = (SeekBar)findViewById(R.id.seekbar);
seekBar.setMax(99); // 100% (0~99)
seekBar.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(mediaPlayer.isPlaying())
{
SeekBar seekBar = (SeekBar)v;
int playPosition = (mediaFileLength/100)*seekBar.getProgress();
mediaPlayer.seekTo(playPosition);
}
return false;
}
});
textView = (TextView)findViewById(R.id.txtTime);
btnToggleRepeat = findViewById(R.id.btnRepeat);
btnStop = findViewById(R.id.btnStop);
musicImage = findViewById(R.id.musicImgView);
Picasso.get().load(imageUrl).placeholder(R.drawable.music).error(R.drawable.music).into(musicImage);
btn_play_pause = (Button) findViewById(R.id.btnTogglePlay);
btn_play_pause.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final ProgressDialog mDialog = new ProgressDialog(PlayerActivity.this);
AsyncTask<String,String,String> mp3Play = new AsyncTask<String, String, String>() {
#Override
protected void onPreExecute() {
mDialog.setMessage("Please wait");
mDialog.show();
}
#Override
protected String doInBackground(String... params) {
try{
mediaPlayer.setDataSource(params[0]);
mediaPlayer.prepare();
}
catch (Exception ex)
{
}
return "";
}
#Override
protected void onPostExecute(String s) {
mediaFileLength = mediaPlayer.getDuration();
realtimeLength = mediaFileLength;
if(!mediaPlayer.isPlaying())
{
playMusic();
}
else
{
pauseMusic();
}
updateSeekBar();
mDialog.dismiss();
}
};
mp3Play.execute(musicUrl); // direct link mp3 file
}
});
btnToggleRepeat.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(isRepeat){
isRepeat = false;
mediaPlayer.setLooping(false);
btnToggleRepeat.setText("Repeat");
}
else{
isRepeat = true;
mediaPlayer.setLooping(true);
btnToggleRepeat.setText("Single");
}
}
});
btnStop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
mediaPlayer.pause();
mediaPlayer.stop();
}
catch (Exception e){
Toast.makeText(PlayerActivity.this, "Opps! sorry something bad happened", Toast.LENGTH_SHORT).show();
}
}
});
mediaPlayer = new MediaPlayer();
mediaPlayer.setOnBufferingUpdateListener(this);
mediaPlayer.setOnCompletionListener(this);
}
public void pauseMusic() {
mediaPlayer.pause();
btn_play_pause.setText("Play");
}
public void playMusic() {
mediaPlayer.start();
btn_play_pause.setText("Pause");
}
private void updateSeekBar() {
seekBar.setProgress((int)(((float)mediaPlayer.getCurrentPosition() / mediaFileLength)*100));
if(mediaPlayer.isPlaying())
{
Runnable updater = new Runnable() {
#Override
public void run() {
updateSeekBar();
realtimeLength-=1000; // declare 1 second
textView.setText(String.format("%d:%d",TimeUnit.MILLISECONDS.toMinutes(realtimeLength),
TimeUnit.MILLISECONDS.toSeconds(realtimeLength) -
TimeUnit.MILLISECONDS.toSeconds(TimeUnit.MILLISECONDS.toMinutes(realtimeLength))));
}
};
handler.postDelayed(updater,1000); // 1 second
}
}
#Override
protected void onResume() {
super.onResume();
Log.d("TAG", "onResume");
}
#Override
protected void onStart() {
super.onStart();
Log.d("TAG", "onStart");
}
#Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
seekBar.setSecondaryProgress(percent);
}
#Override
public void onCompletion(MediaPlayer mp) {
if(!mediaPlayer.isLooping())
btn_play_pause.setText("Play");
}
#Override
protected void onStop() {
super.onStop();
}
#Override
protected void onPause() {
super.onPause();
}
public static class DownloadCancelReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.d("notificationPlayer","Received Cancelled Event");
}
}
}
Thanks in advance. Pardon me if the explanation is not clear, because if i might have right words to explain it, I would have googled it.

Add this to your PlayerActivity activity in manifest :
android:launchMode="singleTask"
And use these flags in the intent for pendingintent :
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

QR scanning, result - "com.google.android.gms.vision.barcode.Barcode#ecd6456"

I have problem, dont know what to do, Goal is to make QR scanner, you enter value then press OK it should store the values in object podaci and to use same values in other activitiy.
But what happens it scans QR code but it doesnt show real value it shows something like this : "com.google.android.gms.vision.barcode.Barcode#ecd6456" and there is no value stored in object podaci in MainActivity.
here is my QR class :
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.example.irhad.mytestapplication.data.Podaci;
import com.google.android.gms.common.api.CommonStatusCodes;
import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;
import java.io.IOException;
public class QRActivity extends AppCompatActivity{
SurfaceView camera_preview;
Intent main;
EditText txtUnosUplacenog;
TextView txtQRIspis;
Button btnOK;
private Podaci podaci;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.qr_activity);
camera_preview = findViewById(R.id.camera_preview);
txtUnosUplacenog = findViewById(R.id.txtUnosUplacenog);
btnOK = findViewById(R.id.btnOK);
txtQRIspis = findViewById(R.id.txtQRIspis);
podaci = new Podaci();
createCameraSource();
}
private void createCameraSource() {
BarcodeDetector barcodeDetector = new BarcodeDetector.Builder(this).build();
final CameraSource cameraSource = new CameraSource.Builder(this, barcodeDetector)
.setAutoFocusEnabled(true)
.setRequestedPreviewSize(620, 480)
.build();
camera_preview.getHolder().addCallback(new SurfaceHolder.Callback() {
#Override
public void surfaceCreated(SurfaceHolder holder) {
try {
if (ActivityCompat.checkSelfPermission(QRActivity.this,
Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
return;
}
cameraSource.start(camera_preview.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
cameraSource.stop();
}
});//camera_preview
barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
#Override
public void release() {}
#Override
public void receiveDetections(Detector.Detections<Barcode> detections) {
final SparseArray<Barcode> barcodes = detections.getDetectedItems();
if(barcodes.size() > 0){
podaci.setQrvalue(barcodes.valueAt(0).toString());
podaci.setUplata(Double.parseDouble(txtUnosUplacenog.getText().toString()));
txtQRIspis.setText(podaci.getQrvalue());
}
}
});//barcodeDetector
}//CreateCameraSource
public void btnOK(View view){
if(podaci.getUplata() != 0 && podaci.getQrvalue() != "")
izadji(podaci);
}
public void izadji(Podaci podatak){
main = new Intent(this, MainActivity.class);
main.putExtra("barcode", podatak.getQrvalue() );
main.putExtra("vrijednost", podatak.getUplata() );
startActivity(main);
finish();
}
public void izadji(View view){
main = new Intent(this, MainActivity.class);
startActivity(main);
finish();
}
}
And here is my MainActivity class :
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.BatteryManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.example.irhad.mytestapplication.data.Podaci;
import com.google.android.gms.common.api.CommonStatusCodes;
import com.google.android.gms.vision.barcode.Barcode;
public class MainActivity extends AppCompatActivity {
Button btnSkenirajQR;
Button btnOpcije;
Button btnExit;
TextView txtIspis;
boolean baterija_ispisano = false;
BroadcastReceiver batteryInfo = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
if(level <= 10 && !baterija_ispisano){
Toast.makeText(getApplicationContext(),
"Molim vas napunite bateriju (<10%)",Toast.LENGTH_LONG);
baterija_ispisano = true;
}else if(level >= 11 && baterija_ispisano){
baterija_ispisano = false;
}
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnSkenirajQR = findViewById(R.id.btnSkener);
btnOpcije = findViewById(R.id.btnOpcije);
btnExit = findViewById(R.id.btnExit);
txtIspis = findViewById(R.id.txtIspis);
}
public void open_Skener(View view){
Intent qrskeniranje = new Intent(this, QRActivity.class);
startActivityForResult(qrskeniranje,0);
finish();
}
public void open_Opcije(View view){
Intent opcije = new Intent(this, OpcijeActivity.class);
startActivity(opcije);
finish();
}
public void izadji(View view){
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(data != null){
String qr = data.getParcelableExtra("barcode");
String value = data.getParcelableExtra("vrijednost");
txtIspis.setText("Barcode vrijednost : " + qr);
} else {
txtIspis.setText("Nije ocitalo");
}
}
}
Ps :And it is changing value while im holding in front of QR code.
#gr54943, #ac45c04 etc...

AdMob Interstitial not loading

I have a problem with admob ads.
The banner ad seems to work fine but the Interstitial is not loading.
I have tried various solutions, generating different ad unit id's and trying admob test ids.
QuoteActivity.java
package com.axdev.thequotesgarden;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.os.Build;
import android.preference.PreferenceManager;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.ads.AdListener;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.InterstitialAd;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Locale;
public class QuoteActivity extends ActionBarActivity implements
TextToSpeech.OnInitListener {
private int ID;
private String mode,fav,text;
private Quote qte;
private DataBaseHandler db;
private ArrayList<Quote> myList = new ArrayList<Quote>();
private TextView textAuth,textQuote;
private ImageView imgIcon;
private ImageButton btnNext,btnPrevious;
private TextToSpeech tts;
private RoundImage roundedImage;
private AdView adView;
private InterstitialAd interstitial;
SharedPreferences sharedPrefs;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quote);
final ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
getWindow().setStatusBarColor(getResources().getColor(R.color.colorPrimaryDark));
}
db = new DataBaseHandler(this);
textAuth = (TextView) findViewById(R.id.textAuth);
textQuote = (TextView) findViewById(R.id.textQuote);
imgIcon = (ImageView) findViewById(R.id.imgcon);
btnNext = (ImageButton) findViewById(R.id.btn_next);
btnPrevious = (ImageButton) findViewById(R.id.btn_prev);
Typeface fontQuote = Typeface.createFromAsset(getAssets(),
"fonts/Roboto-Light.ttf");
Typeface fontAuth = Typeface.createFromAsset(getAssets(),
"fonts/Roboto-Italic.ttf");
textQuote.setTypeface(fontQuote);
textQuote.setTextSize(18);
textAuth.setTypeface(fontAuth);
ID = getIntent().getExtras().getInt("id");
mode = getIntent().getExtras().getString("mode");
if(mode.equals("qteday")){
qte = db.getQuote(ID);
btnNext.setVisibility(View.GONE);
btnPrevious.setVisibility(View.GONE);
}
else {
myList = (ArrayList<Quote>) getIntent().getSerializableExtra("array");
qte = myList.get(ID);}
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
btnNext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (ID < (myList.size() - 1)) {
ID++;
qte = myList.get(ID);
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
}
}
});
btnPrevious.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (ID > 0) {
ID--;
qte = myList.get(ID);
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
}
}
});
fav = qte.getFav();
adView = new AdView(this);
adView.setAdUnitId(getResources().getString(R.string.banner_ad_unit_id));
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout) findViewById(R.id.layAdsQuote);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
if(mode.equals("qteday")){
tts = new TextToSpeech(this, this);
speakOut();
interstitial = new InterstitialAd(this);
interstitial.setAdUnitId(getResources().getString(R.string.interstitial_ad_unit_id));
AdRequest adRequest2 = new AdRequest.Builder().build();
interstitial.loadAd(adRequest2);
interstitial.setAdListener(new AdListener() {
#Override
public void onAdLoaded() {
displayInterstitial();
}
});
}
}
#Override
public void onDestroy() {
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
public void checkPicure(){
boolean isExist = false;
InputStream imageStream = null;
try {
imageStream = getAssets().open("authors/"+qte.getFileName()+".jpg");
isExist =true;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (isExist != false){
Bitmap theImage = BitmapFactory.decodeStream(imageStream);
roundedImage = new RoundImage(theImage);
imgIcon.setImageDrawable(roundedImage );
}
else {
Bitmap bm = BitmapFactory.decodeResource(getResources(),R.mipmap.author);
roundedImage = new RoundImage(bm);
imgIcon.setImageDrawable(roundedImage);
}
}
public void doShare() {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, "Quote");
intent.putExtra(Intent.EXTRA_TEXT,
qte.getQuote() + " - " + qte.getName());
QuoteActivity.this.startActivity(Intent.createChooser(intent,
getResources().getString(R.string.share)));
}
#Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
Locale loc = new Locale("en", "UK");
tts.setLanguage(loc);
tts.setSpeechRate((float) 0.8);
speakOut();
} else {
Log.e("TTS", "Initilization Failed");
}
}
private void speakOut() {
sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
Boolean speaker = sharedPrefs.getBoolean("prefSpeaker", true);
if (speaker.equals(true)) {
text = qte.getQuote() + "\n" + qte.getName();
if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP) {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null, null);
}
else {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_quote, menu);
if (fav.equals("0")) {
menu.findItem(R.id.action_favorite).setIcon(R.mipmap.not_fav);
}
if (fav.equals("1")) {
menu.findItem(R.id.action_favorite).setIcon(R.mipmap.fav);
}
;
return true;
}
#TargetApi(11)
private void copyToClipBoard(String qte) {
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(qte);
} else {
android.content.ClipboardManager clipboard = (android.content.ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
android.content.ClipData clip = android.content.ClipData.newPlainText("text", qte);
clipboard.setPrimaryClip(clip);
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
break;
case R.id.action_share:
doShare();
break;
case R.id.copy:
String text = qte.getQuote() + "- " + qte.getName();
copyToClipBoard(text);
Toast.makeText(getApplicationContext(),
getResources().getString(R.string.copy_msg),
Toast.LENGTH_LONG).show();
break;
case R.id.action_favorite:
if (qte.getFav().equals("0")) {
qte.setFav("1");
db.updateQuote(qte);
item.setIcon(R.mipmap.fav);
} else if (qte.getFav().equals("1")) {
qte.setFav("0");
db.updateQuote(qte);
item.setIcon(R.mipmap.not_fav);
}
}
return true;
}
public void displayInterstitial() {
if (interstitial.isLoaded()) {
interstitial.show();
}
}
}
QuotesActivity.java
package com.axdev.thequotesgarden;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import java.util.ArrayList;
import java.util.List;
public class QuotesActivity extends ActionBarActivity {
private ArrayList<Quote> imageArry = new ArrayList<Quote>();
private QuotesListAdapter adapter;
private String Activitytype;
private DataBaseHandler db;
private ListView dataList;
private int count;
private ImageView noQuotes;
private AdView adView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quotes);
final ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
getWindow().setStatusBarColor(getResources().getColor(R.color.colorPrimaryDark));
}
db = new DataBaseHandler(this);
noQuotes = (ImageView)findViewById(R.id.NoQuotes);
adapter = new QuotesListAdapter(this, R.layout.quote_items, imageArry);
dataList = (ListView) findViewById(R.id.quotesList);
Button btnLoadMore = new Button(this);
btnLoadMore.setBackgroundResource(R.drawable.btn_green);
btnLoadMore.setText(getResources().getText(R.string.btn_LoadMore));
btnLoadMore.setTextColor(0xffffffff);
Activitytype = getIntent().getExtras().getString("mode");
if (Activitytype.equals("isCategory")) {
String categoryValue = getIntent().getExtras()
.getString("category");
List<Quote> contacts = db.getQuotesByCategory(categoryValue);
for (Quote cn : contacts) {
imageArry.add(cn);
}
}
if (Activitytype.equals("isAuthor")) {
String authorValue = getIntent().getExtras().getString("name");
List<Quote> contacts = db.getQuotesByAuthor(authorValue);
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
}
if (Activitytype.equals("isFavorite")) {
actionBar.setTitle(getResources().getText(R.string.title_activity_favorites));
List<Quote> contacts = db.getFavorites();
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
if (imageArry.isEmpty()){
noQuotes.setVisibility(View.VISIBLE);
}
}
if (Activitytype.equals("allQuotes")) {
List<Quote> contacts = db.getAllQuotes(" LIMIT 50");
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
dataList.addFooterView(btnLoadMore);
}
dataList.setAdapter(adapter);
dataList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View viewClicked,
int position, long idInDB) {
Intent i = new Intent(getApplicationContext(),
QuoteActivity.class);
Quote srr = imageArry.get(position);
i.putExtra("id",position);
i.putExtra("array", imageArry);
i.putExtra("mode", "");
startActivity(i);
}
});
btnLoadMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Starting a new async task
new loadMoreListView().execute();
}
});
adView = new AdView(this);
adView.setAdUnitId(getResources().getString(R.string.banner_ad_unit_id));
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout) findViewById(R.id.layAdsQuotes);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
}
private class loadMoreListView extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
// Before starting background task
// Show Progress Dialog etc,.
}
protected Void doInBackground(Void... unused) {
runOnUiThread(new Runnable() {
public void run() {
count += 50;
List<Quote> contacts = db.getAllQuotes(" LIMIT "+count+ ",50");
for (Quote cn : contacts) {
imageArry.add(cn);
}
int currentPosition = dataList.getFirstVisiblePosition();
adapter = new QuotesListAdapter(QuotesActivity.this, R.layout.quote_items, imageArry);
dataList.setSelectionFromTop(currentPosition + 1, 0);
}
});
return (null);
}
protected void onPostExecute(Void unused) {
}
}
#Override
public void onBackPressed()
{
finish();
super.onBackPressed(); // optional depending on your needs
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_quotes, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
break;
}
return true;
}
}

The simplest answer is that mode is not equal to "qteday"
if(mode.equals("qteday")){
Unless that is true, the interstitial will never be loaded.

Insert class for scanning ble devices into a Service, to make it work in background in Android

I have a class, and I want that this class works in background. I thought I'd put it in a service, but I do not know how to do it. This is my class called DeviceScanActivity.java:
package com.example.giacomob.myapplication;
/**
* Created by Giacomo B on 20/09/2015.
*/
import android.app.Activity;
import android.app.ListActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
class MyService extends Service{
}
public class DeviceScanActivity extends ListActivity {
MyService service = new MyService();
private LeDeviceListAdapter mLeDeviceListAdapter;
private BluetoothAdapter mBluetoothAdapter;
private boolean mScanning;
private Handler mHandler;
private static final int REQUEST_ENABLE_BT = 1;
// Stops scanning after 10 seconds.
private static final long SCAN_PERIOD = 2100000000;
#Override
public void onCreate(Bundle savedInstanceState) {
System.out.println("BLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE");
super.onCreate(savedInstanceState);
getActionBar().setTitle(R.string.title_devices);
mHandler = new Handler();
// Use this check to determine whether BLE is supported on the device. Then you can
// selectively disable BLE-related features.
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText(this, R.string.ble_not_supported, Toast.LENGTH_SHORT).show();
finish();
}
// Initializes a Bluetooth adapter. For API level 18 and above, get a reference to
// BluetoothAdapter through BluetoothManager.
final BluetoothManager bluetoothManager =
(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBluetoothAdapter = bluetoothManager.getAdapter();
// Checks if Bluetooth is supported on the device.
if (mBluetoothAdapter == null) {
Toast.makeText(this, R.string.error_bluetooth_not_supported, Toast.LENGTH_SHORT).show();
finish();
return;
}
scanLeDevice(true);
}
/*
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
if (!mScanning) {
menu.findItem(R.id.menu_stop).setVisible(false);
menu.findItem(R.id.menu_scan).setVisible(true);
menu.findItem(R.id.menu_refresh).setActionView(null);
} else {
menu.findItem(R.id.menu_stop).setVisible(true);
menu.findItem(R.id.menu_scan).setVisible(false);
menu.findItem(R.id.menu_refresh).setActionView(
R.layout.actionbar_indeterminate_progress);
}
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_scan:
mLeDeviceListAdapter.clear();
scanLeDevice(true);
break;
case R.id.menu_stop:
scanLeDevice(false);
break;
}
return true;
}
*/
#Override
protected void onResume() {
super.onResume();
// Ensures Bluetooth is enabled on the device. If Bluetooth is not currently enabled,
// fire an intent to display a dialog asking the user to grant permission to enable it.
if (!mBluetoothAdapter.isEnabled()) {
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
// Initializes list view adapter.
mLeDeviceListAdapter = new LeDeviceListAdapter();
setListAdapter(mLeDeviceListAdapter);
scanLeDevice(true);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// User chose not to enable Bluetooth.
if (requestCode == REQUEST_ENABLE_BT && resultCode == Activity.RESULT_CANCELED) {
finish();
return;
}
super.onActivityResult(requestCode, resultCode, data);
}
/*
#Override
protected void onPause() {
super.onPause();
scanLeDevice(false);
mLeDeviceListAdapter.clear();
}
*/
private void scanLeDevice(final boolean enable) {
if (enable) {
// Stops scanning after a pre-defined scan period.
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
mScanning = false;
mBluetoothAdapter.stopLeScan(mLeScanCallback);
invalidateOptionsMenu();
}
}, SCAN_PERIOD);
mScanning = true;
mBluetoothAdapter.startLeScan(mLeScanCallback);
} else {
mScanning = false;
mBluetoothAdapter.stopLeScan(mLeScanCallback);
}
invalidateOptionsMenu();
}
// Adapter for holding devices found through scanning.
private class LeDeviceListAdapter extends BaseAdapter {
private ArrayList<BluetoothDevice> mLeDevices;
private LayoutInflater mInflator;
public LeDeviceListAdapter() {
super();
mLeDevices = new ArrayList<BluetoothDevice>();
mInflator = DeviceScanActivity.this.getLayoutInflater();
}
public void addDevice(BluetoothDevice device) {
if (!mLeDevices.contains(device)) {
mLeDevices.add(device);
}
}
public BluetoothDevice getDevice(int position) {
return mLeDevices.get(position);
}
public void clear() {
mLeDevices.clear();
}
#Override
public int getCount() {
return mLeDevices.size();
}
#Override
public Object getItem(int i) {
return mLeDevices.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder viewHolder;
// General ListView optimization code.
if (view == null) {
view = mInflator.inflate(R.layout.listitem_device, null);
viewHolder = new ViewHolder();
viewHolder.deviceAddress = (TextView) view.findViewById(R.id.device_address);
viewHolder.deviceName = (TextView) view.findViewById(R.id.device_name);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) view.getTag();
}
BluetoothDevice device = mLeDevices.get(i);
final String deviceName = device.getName();
if (deviceName != null && deviceName.length() > 0)
viewHolder.deviceName.setText(deviceName);
else
viewHolder.deviceName.setText(R.string.unknown_device);
viewHolder.deviceAddress.setText(device.getAddress());
return view;
}
}
// Device scan callback.
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
#Override
public void onLeScan(final BluetoothDevice device, int rssi, byte[] scanRecord) {
runOnUiThread(new Runnable() {
#Override
public void run() {
mLeDeviceListAdapter.addDevice(device);
mLeDeviceListAdapter.notifyDataSetChanged();
}
});
}
};
static class ViewHolder {
TextView deviceName;
TextView deviceAddress;
}
}
and I would to insert this class in a Service like this:
package com.example.giacomob.myapplication;
import android.app.Activity;
import android.app.IntentService;
import android.app.ListActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
/**
* Created by Giacomo B on 20/09/2015.
*/
public class LogService extends IntentService
{
public LogService()
{
super("LogService");
}
#Override
protected void onHandleIntent(Intent i)
{
int n=0;
while(true)
{
Log.i("PROVA SERVICE", "Evento n." + n++);
Toast.makeText(this, "Ho aperto il LogService", Toast.LENGTH_SHORT).show();
// Intent second = new Intent(getApplicationContext(), DeviceScanActivity.class);
// startActivity(second);
try {
Thread.sleep(10000);
}
catch (InterruptedException e)
{ }
}
}
How I can do it? Please, help me. Thanks

To run your scanning in the background, you'll want to put all your scanning code in your IntentService. The onHandleIntent method in your service has a similar logical function to your activity's onCreate method, so you can put your initialization code there.
Your activity will launch your service. To schedule regular scans, use either JobScheduler (preferred) or AlarmManager to send intents to launch your service at specified intervals. Be sure to pass your application context rather than your activity context when launching intents so that scanning may occur when your activity has been destroyed.
P.S. Please do not use an infinite loop and a sleep call. This will cause unnecessary blocking on your service thread and waste resources.