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How to make BLE scan and MQTT publish work in background Android Studio Java

I want make some project where Android can scan nearby Beacon/BLE and send it using MQTT. But I want the service to work in the background if the service work in the foreground it will interrupt the scanning process when screen is off.
This is my code for scanning:
package com.example.mqtt_active;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import org.eclipse.paho.android.service.MqttAndroidClient;
import org.eclipse.paho.client.mqttv3.IMqttActionListener;
import org.eclipse.paho.client.mqttv3.IMqttToken;
import org.eclipse.paho.client.mqttv3.MqttException;
import java.nio.charset.StandardCharsets;
import android.util.Log;
public class MainActivity extends AppCompatActivity {
private Button turnon, changeLayout;
MqttAndroidClient client;
private boolean state=false;
private BluetoothAdapter bluetoothAdapter;
public static final int REQUEST_ACCESS_COARSE_LOCATION = 1;
public static final int REQUEST_ENABLE_BLUETOOTH = 11;
public static String mqtt_server,mqtt_port,mqtt_id;
private TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
setContentView(R.layout.activity_main);
Log.d("Logger", "On Create Android");
turnon = findViewById(R.id.turnon);
changeLayout = findViewById(R.id.mqttSet);
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
textView = findViewById(R.id.textView4);
textView.setText("id "+mqtt_id+" port "+mqtt_port+" server "+mqtt_server);
client = new MqttAndroidClient(this.getApplicationContext(), "tcp://"+mqtt_server+":"+mqtt_port,mqtt_id);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
stateCheck();
Log.d("Logger", "State Check");
handler.postDelayed(this, 1000);
}
}, 1000);
// final Handler handlerStop = new Handler();
// handlerStop.postDelayed(new Runnable() {
// #Override
// public void run() {
// bluetoothAdapter.cancelDiscovery();
// Log.d("Logger", "Cancel Dsicovery");
// handlerStop.postDelayed(this, 2000);
// }
// }, 2000);
turnon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!state){
turnon.setText("Turn Off");
Log.d("Logger", "Turn On State");
// if (bluetoothAdapter!=null & bluetoothAdapter.isEnabled()) {
// if(checkCoarsePermission()){
// bluetoothAdapter.startDiscovery();
// }
// }
if(mqtt_server!=null||mqtt_id!=null||mqtt_port!=null){
try {
Log.d("Logger", "Try ");
IMqttToken token = client.connect();
token.setActionCallback(new IMqttActionListener() {
#Override
public void onSuccess(IMqttToken asyncActionToken) {
Log.d("Logger", "Connect MQTT");
Toast.makeText(MainActivity.this,"connected!!",Toast.LENGTH_LONG).show();
}
#Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
Log.d("Logger", "Connect Failed");
Toast.makeText(MainActivity.this,"connection failed!!",Toast.LENGTH_LONG).show();
}
});
} catch (MqttException e) {
e.printStackTrace();
Log.d("Logger", "error"+e);
}}
state = true;
}else{
turnon.setText("Turn On");
state = false;
// bluetoothAdapter.cancelDiscovery();
}
}
});
changeLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(MainActivity.this,MqttActivity.class));
}
});
}
public void stateCheck(){
if (state){
if (bluetoothAdapter!=null & bluetoothAdapter.isEnabled()) {
if(checkCoarsePermission()){
Log.d("Logger", "Discover");
bluetoothAdapter.startDiscovery();
}
}
}
// else {
// Log.d("Logger", "Cancel");
// bluetoothAdapter.cancelDiscovery();
// }
}
private boolean checkCoarsePermission(){
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.ACCESS_COARSE_LOCATION},
REQUEST_ACCESS_COARSE_LOCATION);
return false;
}else {
return true;
}
}
#Override
protected void onResume() {
super.onResume();
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED));
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED));
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(devicesFoundReceiver);
}
private final BroadcastReceiver devicesFoundReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action= intent.getAction();
if(BluetoothDevice.ACTION_FOUND.equals(action)){
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
int rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE);
String RSSI = String.valueOf(rssi);
Toast.makeText(context.getApplicationContext(),"rssi "+RSSI+" "+device.getAddress(),Toast.LENGTH_SHORT).show();
Log.d("Logger", "Recive data "+device.getAddress());
if(mqtt_server!=null||mqtt_id!=null||mqtt_port!=null){
try {
Log.d("Logger", "Sending data");
String payload = "rssi:"+RSSI+"mac:"+device.getAddress();
client.publish("test",payload.getBytes(),0,false);
} catch ( MqttException e) {
e.printStackTrace();
Log.d("Logger", "Error Sending "+e);
}}
}else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)){
}else if(BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)){
}
}
};
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case REQUEST_ACCESS_COARSE_LOCATION:
if(grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
Toast.makeText(this,"ALLOWED", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(this,"Forbidden",Toast.LENGTH_SHORT).show();
} break;
}
}
}
App Flow:
Insert MQTT server, port, id, topic.
Turn on the proccess.
Android scan BLE/Beacon
Android sending MAC/RSSI to MQTT
I hope someone can help to guide me, on how to make the application run in the background?
I'm a beginner, and I don't understand how to implement background service in my application. Please help me!

You need to implement a foreground service that will handle your ble scanning and MQTT logic.
See this article with an overview of how to do it. Depending on your build/target SDK, the implementation will vary.

How to remove the button after purchase

Please help!!!
I am creating a screen capture application and the problem is that after clicking the PRO button and after the purchase, the ads and the button do not hide.
I am trying to remove a button and ads using layout changes:
setContentView (R.layout.main_pro)
the code:
IabHelper.OnIabPurchaseFinishedListener () {
#Override
public void onIabPurchaseFinished (IabResult result, purchase purchase) {
if (result.isFailure ()) {
Log.d (TAG, "Purchase Error:" result);
return;
}
even if (purchase.getSku (). equals (SKU_REMOVE_ADS)) {
isAdsDisabled = true;
setContentView (R.layout.main_pro);
remove ads ();
Toast.makeText (MainActivity.this, “The purchase was successful,” Toast.LENGTH_LONG) .show ();
}
}
};
}
Full code:
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Application;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.BroadcastReceiver;
import android.content.ClipData;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.AdaptiveIconDrawable;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.icu.text.SimpleDateFormat;
import android.media.MediaRecorder;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.SparseIntArray;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Surface;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RemoteViews;
import android.widget.Toast;
import android.widget.ViewFlipper;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.ShareActionProvider;
import androidx.appcompat.widget.Toolbar;
import androidx.core.app.ActivityCompat;
import androidx.core.app.NotificationManagerCompat;
import androidx.core.content.ContextCompat;
import com.davidgrigoryan.screenrecorder.util.Constants;
import com.davidgrigoryan.screenrecorder.util.IabHelper;
import com.davidgrigoryan.screenrecorder.util.IabResult;
import com.davidgrigoryan.screenrecorder.util.Inventory;
import com.davidgrigoryan.screenrecorder.util.Purchase;
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 com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
private static final int REQUEST_CODE = 1000;
private int mScreenDensity;
File file;
private Context context;
private ShareActionProvider mShareActionProvider;
private MediaProjectionManager mProjectionManager;
private static final int DISPLAY_WIDTH = 720;
private static final int DISPLAY_HEIGHT = 1280;
private MediaProjection mMediaProjection;
private VirtualDisplay mVirtualDisplay;
static final String SKU_REMOVE_ADS = "android.test.purchased";
static final int RC_REQUEST = 10111;
private MediaProjectionCallback mMediaProjectionCallback;
private MediaRecorder mMediaRecorder;
private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
private static final int REQUEST_PERMISSION_KEY = 1;
boolean isRecording = false;
private FloatingActionButton rec;
static {
ORIENTATIONS.append(Surface.ROTATION_0, 90);
ORIENTATIONS.append(Surface.ROTATION_90, 0);
ORIENTATIONS.append(Surface.ROTATION_180, 270);
ORIENTATIONS.append(Surface.ROTATION_270, 180);
}
private Intent intent;
private Activity activity;
private boolean URL_TO_SHARE;
private ImageView wm;
private NotificationManagerCompat notificationManager;
private String title;
private String message;
private InterstitialAd mInterstitialAd;
private String testDeviceId;
AdRequest adRequest;
private AdView adView;
IabHelper mHelper;
String base64EncodedPublicKey = "PublicKey";
Boolean isAdsDisabled = false;
String payload = "Upgrade PRO";
private Inventory i;
private IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener;
private static boolean isWidget = false;
private static Context appContext;
private Timer timer;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView pro = (ImageView) findViewById(R.id.buy);
final SharedPreferences prefs = getSharedPreferences("sharedPreferences", Context.MODE_PRIVATE);
pro.setVisibility(prefs.getBoolean("isPurchase", true) ? View.VISIBLE : View.INVISIBLE);
pro.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
purchaseRemoveAds();
}
});
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final Handler handler = new Handler();
final Timer timer = new Timer();
final TimerTask doAsynchronousTask = new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
public void run() {
if (mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
}
}
});
}
};
timer.schedule(doAsynchronousTask, 0, 120000);
adView = (AdView) findViewById(R.id.adView);
adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
AdView adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId("ca-app-pub-9842509861911521/3646081879");
AdRequest adRequestInterstitial = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice(testDeviceId)
.build();
AdRequest adRequestBanner = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice(testDeviceId)
.build();
AdRequest request = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.build();
AdSize adSize = new AdSize(320, 50);
MobileAds.initialize(getApplicationContext(), "ca-app-pub-9842509861911521/3646081879");
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId("ca-app-pub-9842509861911521/1961271598");
mInterstitialAd.loadAd(new AdRequest.Builder().build());
mInterstitialAd.setAdListener(new AdListener() {
#Override
public void onAdClosed() {
// Load the next interstitial.
mInterstitialAd.loadAd(new AdRequest.Builder().build());
}
});
String[] PERMISSIONS = {
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.RECORD_AUDIO
};
if (!Service.hasPermissions(this, PERMISSIONS)) {
ActivityCompat.requestPermissions(this, PERMISSIONS, REQUEST_PERMISSION_KEY);
}
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
mScreenDensity = metrics.densityDpi;
mMediaRecorder = new MediaRecorder();
mProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
rec = (FloatingActionButton) findViewById(R.id.rec);
rec.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onToggleScreenShare();
}
});
mHelper = new IabHelper(this, base64EncodedPublicKey);
mHelper.enableDebugLogging(false);
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
#Override
public void onIabSetupFinished(IabResult result, IabHelper.QueryInventoryFinishedListener mGotInventoryListener) throws IabHelper.IabAsyncInProgressException {
Log.d(TAG, "Setup finished.");
if (!result.isSuccess()) {
return;
}
if (mHelper == null)
return;
Log.d(TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(mGotInventoryListener);
}
});
queryPurchased();
IabHelper.OnIabPurchaseFinishedListener mPurchasedFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
#Override
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
if (result.isFailure()) {
Log.d(TAG, "Error purchasing: " + result);
return;
}
else if (purchase.getSku().equals(SKU_REMOVE_ADS)) {
isAdsDisabled = true;
setContentView(R.layout.main_pro);
removeAds();
Toast.makeText(MainActivity.this,"Purchase successful",Toast.LENGTH_LONG).show();
}
}
};
}
private void queryPurchased() {
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
#Override
public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
if (result.isFailure()) {
// handle error here
}
else{
// does the user have the premium upgrade?
isAdsDisabled = inventory.hasPurchase(SKU_REMOVE_ADS);
// update UI accordingly
}
}
};
}
public void purchaseRemoveAds() {
try {
mHelper.flagEndAsync();
mHelper.launchPurchaseFlow(this, SKU_REMOVE_ADS, 9, mPurchaseFinishedListener, "SECURITYSTRING");
} catch (Exception e) {
e.printStackTrace();
mHelper.flagEndAsync();
new AlertDialog.Builder(MainActivity.this)
.setTitle(R.string.error)
.setMessage(R.string.error_play_store)
.setPositiveButton("OK", null)
.show();
}
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
Log.d(TAG, "Purchase finished: " + result + ", purchase: "
+ purchase);
if (mHelper == null)
return;
if (result.isFailure()) {
return;
}
if (!verifyDeveloperPayload(purchase)) {
return;
}
if (isAdsDisabled == true){
setContentView(R.layout.main_pro);
}
Log.d(TAG, "Purchase successful.");
if (purchase.getSku().equals(SKU_REMOVE_ADS)) {
removeAds();
}
}
};
}
private void removeAds() {
adView.setEnabled(false);
adView.setVisibility(View.INVISIBLE);
}
public void onToggleScreenShare() {
if (!isRecording) {
Toast.makeText(getApplicationContext(), R.string.start_rec, Toast.LENGTH_LONG).show();
startService();
initRecorder();
shareScreen();
} else {
if (mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
} else {
Log.d("TAG", "Ads not loaded!");
}
Toast.makeText(getApplicationContext(), R.string.stop_rec, Toast.LENGTH_LONG).show();
stopService();
mMediaRecorder.stop();
mMediaRecorder.reset();
stopScreenSharing();
}
}
private void shareScreen() {
if (mMediaProjection == null) {
startActivityForResult(mProjectionManager.createScreenCaptureIntent(), REQUEST_CODE);
return;
}
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
isRecording = true;
}
private VirtualDisplay createVirtualDisplay() {
return mMediaProjection.createVirtualDisplay("MainActivity", DISPLAY_WIDTH, DISPLAY_HEIGHT, mScreenDensity,
DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, mMediaRecorder.getSurface(), null, null);
}
private void initRecorder() {
try {
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); //THREE_GPP
mMediaRecorder.setOutputFile(this.initFile().getAbsolutePath());
mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mMediaRecorder.setVideoEncodingBitRate(512 * 1000);
mMediaRecorder.setVideoFrameRate(16); // 30
mMediaRecorder.setVideoEncodingBitRate(3000000);
int rotation = getWindowManager().getDefaultDisplay().getRotation();
int orientation = ORIENTATIONS.get(rotation + 90);
mMediaRecorder.setOrientationHint(orientation);
mMediaRecorder.prepare();
} catch (IOException e) {
e.printStackTrace();
}
}
#SuppressLint("NewApi")
private File initFile() {
File dir = new File(Environment.getExternalStorageDirectory() +
File.separator + "ScreenRecorder");
if (!dir.exists() && !dir.mkdirs()) {
Log.wtf(TAG,
R.string.error_folder
+ dir.getAbsolutePath());
file = null;
} else {
file = new File(dir.getAbsolutePath(), new SimpleDateFormat(
"'VIDEO-'yyyyMMddHHmmss'.mp4'").format(new Date()));
}
return file;
}
private void stopScreenSharing() {
if (mVirtualDisplay == null) {
return;
}
mVirtualDisplay.release();
destroyMediaProjection();
isRecording = false;
}
private void destroyMediaProjection() {
if (mMediaProjection != null) {
mMediaProjection.unregisterCallback(mMediaProjectionCallback);
mMediaProjection.stop();
mMediaProjection = null;
}
Log.i(TAG, "MediaProjection Stopped");
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode != REQUEST_CODE) {
Log.e(TAG, "Unknown request code: " + requestCode);
return;
}
if (resultCode != RESULT_OK) {
Toast.makeText(this, R.string.denied, Toast.LENGTH_SHORT).show();
isRecording = false;
return;
}
Log.d(TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {
} else
Log.d(TAG, "onActivityResult handled by IABUtil.");
mMediaProjectionCallback = new MediaProjectionCallback();
mMediaProjection = mProjectionManager.getMediaProjection(resultCode, data);
mMediaProjection.registerCallback(mMediaProjectionCallback, null);
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
isRecording = true;
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String permissions[], #NonNull int[] grantResults) {
switch (requestCode) {
case REQUEST_PERMISSION_KEY: {
if ((grantResults.length > 0) && (grantResults[0] + grantResults[1]) == PackageManager.PERMISSION_GRANTED) {
onToggleScreenShare();
} else {
isRecording = false;
Snackbar.make(findViewById(android.R.id.content), R.string.message,
Snackbar.LENGTH_INDEFINITE).setAction(R.string.enable,
new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getPackageName()));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(intent);
}
}).show();
}
return;
}
}
}
private class MediaProjectionCallback extends MediaProjection.Callback {
#Override
public void onStop() {
if (isRecording) {
isRecording = false;
mMediaRecorder.stop();
mMediaRecorder.reset();
}
mMediaProjection = null;
stopScreenSharing();
}
}
#Override
public void onPause() {
if (adView != null) {
adView.pause();
}
super.onPause();
}
#Override
public void onResume() {
super.onResume();
if (adView != null) {
adView.resume();
}
}
#Override
public void onDestroy() {
if (mHelper != null)
try {
mHelper.dispose();
mHelper = null;
} catch (IabHelper.IabAsyncInProgressException e) {
e.printStackTrace();
}
if (adView != null) {
adView.destroy();
}
super.onDestroy();
destroyMediaProjection();
}
private void about() {
AlertDialog.Builder builder1 = new AlertDialog.Builder(this);
builder1.setTitle(R.string.about);
builder1.setMessage(R.string.description);
builder1.setCancelable(true);
builder1.setNeutralButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
return super.onPrepareOptionsMenu(menu);
}
#SuppressLint("ResourceType")
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.about:
about();
return true;
case R.id.share:
shareApp();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void shareApp() {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.app_name));
#SuppressLint({"StringFormatInvalid", "LocalSuppress"})
String extraText = getString(R.string.share_desc, getString(R.string.link));
intent.putExtra(Intent.EXTRA_TEXT, extraText);
startActivity(Intent.createChooser(intent, getString(R.string.share)));
}
public void startService() {
Intent serviceIntent = new Intent(this, Background.class);
serviceIntent.putExtra("inputExtra", "Notification");
ContextCompat.startForegroundService(this, serviceIntent);
}
public void stopService() {
Intent serviceIntent = new Intent(this, Background.class);
stopService(serviceIntent);
}
boolean verifyDeveloperPayload(Purchase p) {
String payload = p.getDeveloperPayload();
return true;
}
}
And it looks like this:
What am I doing wrong? How can I fix this?
Thanks for any help!

Android Java app fails to send selected file/data via Bluetooth

My current android app can turn on Bluetooth, make itself discoverable, list paired devices, and select a file from the device ( ie an image). However when I attempted to hit "send" the app seems to crash with an error. Not sure if it's refusing to send, or if it's not actually obtaining the file (yesterday I had a problem where it refused to send the selected, saying for me to select a file repeatedly. I will post the crash results and my mainActivity code. If anyone suggestions or ideas, please let me know.
Error: Debugging device
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.bluetooth_demoproject, PID: 17593
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=300, data=null} to activity {com.example.bluetooth_demoproject/com.example.bluetooth_demoproject.MainActivity}: android.os.FileUriExposedException: file:///storage/emulated/0/Pictures/Screenshots/Screenshot_20161013-215137.png exposed beyond app through ClipData.Item.getUri()
at android.app.ActivityThread.deliverResults(ActivityThread.java:4107)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4150)
at android.app.ActivityThread.-wrap20(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1517)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6120)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: android.os.FileUriExposedException: file:///storage/emulated/0/Pictures/Screenshots/Screenshot_20161013-215137.png exposed beyond app through ClipData.Item.getUri()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1799)
at android.net.Uri.checkFileUriExposed(Uri.java:2346)
at android.content.ClipData.prepareToLeaveProcess(ClipData.java:832)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8909)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8894)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1517)
at android.app.Activity.startActivityForResult(Activity.java:4224)
at android.app.Activity.startActivityForResult(Activity.java:4183)
at android.app.Activity.startActivity(Activity.java:4507)
at android.app.Activity.startActivity(Activity.java:4475)
at com.example.bluetooth_demoproject.MainActivity.onActivityResult(MainActivity.java:350)
at android.app.Activity.dispatchActivityResult(Activity.java:6917)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4103)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4150) 
at android.app.ActivityThread.-wrap20(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1517) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6120) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 
Disconnected from the target VM, address: 'localhost:8601', transport: 'socket'
Here is my MainActivity
package com.example.bluetooth_demoproject;
import android.app.Activity;
import android.app.Dialog;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Environment;
import android.view.Menu;
import android.view.MenuItem;
import android.bluetooth.BluetoothA2dp;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Set;
import java.io.File;
import java.util.List;
import java.util.ArrayList;
public class MainActivity extends Activity {
// Creating objects -----------------------------
private static final int REQUEST_ENABLE_BT = 0;
private static final int REQUEST_BLU = 1;
// private static final int REQUEST_DISCOVER_BT_ = 1;
private static int CUSTOM_DIALOG_ID = 0;
ListView dialog_ListView;
TextView mBluetoothStatus, mPairedDevicesList, mTextFolder;
ImageView mBluetoothIcon;
Button mOnButton, mDiscoverableButton, mPairedDevices, mbuttonOpenDialog, msendBluetooth, mbuttonUp;
File root, fileroot, curFolder;
EditText dataPath;
private static final int DISCOVER_DURATION = 300;
private List<String> fileList = new ArrayList<String>();
// -------------------------------------------------------
BluetoothAdapter mBlueAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dataPath =(EditText)findViewById(R.id.FilePath);
mTextFolder = findViewById(R.id.folder);
mBluetoothStatus = findViewById(R.id.BluetoothStatus);
mBluetoothIcon = findViewById(R.id.bluetoothIcon);
mOnButton = findViewById(R.id.onButton);
// mOffButton = findViewById(R.id.offButton);
mDiscoverableButton = findViewById(R.id.discoverableButton);
mPairedDevices = findViewById(R.id.pairedDevices);
mPairedDevicesList = findViewById(R.id.pairedDeviceList);
mbuttonOpenDialog = findViewById(R.id.opendailog);
msendBluetooth = findViewById(R.id.sendBluetooth);
mbuttonUp = findViewById(R.id.up);
mbuttonOpenDialog.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dataPath.setText("");
showDialog(CUSTOM_DIALOG_ID);
}
});
root = new
File(Environment.getExternalStorageDirectory().getAbsolutePath());
curFolder = root;
msendBluetooth.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
sendViaBluetooth();
}
});
//adapter
mBlueAdapter = BluetoothAdapter.getDefaultAdapter();
if(mBlueAdapter == null){
mBluetoothStatus.setText("Bluetooth is not available");
return;
}
else {
mBluetoothStatus.setText("Bluetooth is available");
}
//if Bluetooth isnt enabled, enable it
if (!mBlueAdapter.isEnabled()) {
Intent enableBtIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
//set image according to bluetooth Status
if (mBlueAdapter.isEnabled()) {
mBluetoothIcon.setImageResource(R.drawable.action_on);
}
else {
mBluetoothIcon.setImageResource(R.drawable.action_off);
}
//on button Click
mOnButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
if (!mBlueAdapter.isEnabled()) {
showToast("Turning Bluetooth on...");
// intent to on bluetooth
Intent intent = new
Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent, REQUEST_ENABLE_BT);
}
else {
showToast("Bluetooth is already on");
}
}
});
//discover Bluetooth button
mDiscoverableButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
if (!mBlueAdapter.isDiscovering()) {
showToast("Making device discoverable");
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
startActivityForResult(intent, REQUEST_BLU);
}
}
});
// off button click
// mOffButton.setOnClickListener(new View.OnClickListener() {
// #Override
// public void onClick(View v) {
// if (mBlueAdapter.isEnabled()) {
// showToast("Turning Bluetooth off...");
// // intent to turn off bluetooth
// mBluetoothIcon.setImageResource(R.drawable.action_off);
// }
// else{
// showToast("Bluetooth is already off");
// }
//
// }
//});
//get paired device button click
mPairedDevices.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mBlueAdapter.isEnabled()) {
mPairedDevices.setText("Paired Devices");
Set<BluetoothDevice> devices = mBlueAdapter.getBondedDevices();
for (BluetoothDevice device : devices){
mPairedDevices.append("\nDevice: " + device.getName() + "," + device );
}
}
else {
//bluetooth is off and cant get paired devices
showToast("Turn on bluetooth to get paired devices");
}
}
});
}
// #Override
// protected void onPrepareDialog(int id, Dialog dialog) {
// super.onPrepareDialog(id, dialog);
// switch (id) {
// case CUSTOM_DIALOG_ID:
// ListDir(curFolder);
// break;
// }
// }
#Override
protected Dialog onCreateDialog(int id) {
Dialog dialog = null;
if (id == CUSTOM_DIALOG_ID) {
dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.dailoglayout);
dialog.setTitle("Select Files");
dialog.setCancelable(true);
dialog.setCanceledOnTouchOutside(true);
mTextFolder = (TextView) dialog.findViewById(R.id.folder);
mbuttonUp = (Button) dialog.findViewById(R.id.up);
mbuttonUp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ListDir(curFolder.getParentFile());
}
});
dialog_ListView = (ListView) dialog.findViewById(R.id.dialoglist);
dialog_ListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
File selected = new File(fileList.get(position));
if (selected.isDirectory()) {
ListDir(selected);
}
else if (selected.isFile()) {
getSelectedFile(selected);
}
else {
dismissDialog(CUSTOM_DIALOG_ID);
}
}
});
}
return dialog;
}
#Override
protected void onPrepareDialog(int id, Dialog dialog) {
super.onPrepareDialog(id, dialog);
if (id == CUSTOM_DIALOG_ID) {
ListDir(curFolder);
}
}
public void getSelectedFile(File f) {
dataPath.setText(f.getAbsolutePath());
fileList.clear();
dismissDialog(CUSTOM_DIALOG_ID);
}
public void ListDir(File f) {
if (f.equals(root)) {
mbuttonUp.setEnabled(false);
}
else {
mbuttonUp.setEnabled(true);
}
curFolder = f;
mTextFolder.setText(f.getAbsolutePath());
dataPath.setText(f.getAbsolutePath());
File[] files = f.listFiles();
fileList.clear();
for (File file : files) {
fileList.add(file.getPath());
}
ArrayAdapter<String> directoryList = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, fileList);
dialog_ListView.setAdapter(directoryList);
}
// exits to app --------------------------------
public void exit(View V) {
mBlueAdapter.disable();
Toast.makeText(this, "*** Now bluetooth is off...", Toast.LENGTH_LONG).show();
finish();
}
// send file via bluetooth ------------------------
public void sendViaBluetooth() {
if(!dataPath.equals(null)) {
if(mBlueAdapter == null) {
Toast.makeText(this, "Device doesnt support bluetooth", Toast.LENGTH_LONG).show();
}
else {
enableBluetooth();
}
}
else {
Toast.makeText(this, "please select a file", Toast.LENGTH_LONG).show();
}
}
public void enableBluetooth() {
showToast("Making device discoverable");
Intent discoveryIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoveryIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, DISCOVER_DURATION);
startActivityForResult(discoveryIntent, REQUEST_BLU);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == DISCOVER_DURATION && requestCode == REQUEST_BLU) {
Intent i = new Intent();
i.setAction(Intent.ACTION_SEND);// STOPPED HERE-----------------------------------------------------------------
i.setType("*/*");
File file = new File(dataPath.getText().toString());
i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
PackageManager pm = getPackageManager();
List<ResolveInfo> list = pm.queryIntentActivities(i, 0);
if (list.size() > 0) {
String packageName = null;
String className = null;
boolean found = false;
for (ResolveInfo info : list) {
packageName = info.activityInfo.packageName;
if (packageName.equals("com.android.bluetooth")) {
className = info.activityInfo.name;
found = true;
break;
}
}
//CHECK BLUETOOTH available or not------------------------------------------------
if (!found) {
Toast.makeText(this, "Bluetooth not been found", Toast.LENGTH_LONG).show();
} else {
i.setClassName(packageName, className);
startActivity(i);
}
}
} else {
Toast.makeText(this, "Bluetooth is cancelled", Toast.LENGTH_LONG).show();
}
}
#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.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
// if (id == R.id.action_settings) {
// Toast.makeText(this, "**********************************\nDeveloper: www.santoshkumarsingh.com\n**********************************", Toast.LENGTH_LONG).show();
// return true;
// }
return super.onOptionsItemSelected(item);
}
//toast message function
private void showToast(String msg) {
Toast.makeText(this, msg, Toast.LENGTH_SHORT) .show();
}
}

You have trouble with file exchange not with BLE.
Did you ever read Android FileUriExposedException?

Binary XML file line #41: Error inflating class com.facebook.login.widget.LoginButton

Getting an error while runtime how to resolve this plz help me out with as i am stucked in it i am a beginner
getting log cat error
Binary XML file line #41: Error inflating class com.facebook.login.widget.LoginButton
<com.facebook.login.widget.LoginButton
android:id="#+id/login_button"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_marginTop="5dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_below="#id/signInText"
android:background="#drawable/facebook_connect"
/>
Home Activity
package com.styllonz.activities;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.plus.Plus;
import com.google.android.gms.plus.model.people.Person;
import com.google.gson.Gson;
import com.styllonz.R;
import com.styllonz.fragments.ForgotPasswordFragment;
import com.styllonz.fragments.LandingFragment;
import com.styllonz.fragments.LoginFragment;
import com.styllonz.fragments.SignUpFragment;
import com.styllonz.models.Response;
import com.styllonz.network.BusNetworkCallback;
import com.styllonz.network.WebserviceApi;
import com.styllonz.utils.Constants;
import com.styllonz.utils.Utilities;
import retrofit.RetrofitError;
public class HomeActivity extends FragmentActivity implements LandingFragment.OnFragmentInteractionListener,SignUpFragment.OnFragmentInteractionListener,
LoginFragment.OnFragmentInteractionListener, ForgotPasswordFragment.OnFragmentInteractionListener,
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener
{
/* Request code used to invoke sign in user interactions. */
private static final int RC_SIGN_IN = 0;
/* Client used to interact with Google APIs. */
private GoogleApiClient mGoogleApiClient;
/* A flag indicating that a PendingIntent is in progress and prevents
* us from starting further intents.
*/
private boolean mIntentInProgress, mSignInClicked;
ConnectionResult mConnectionResult;
ProgressDialog progress;
Context mContext;
SharedPreferences mSharedPreferences;
SharedPreferences.Editor mEditor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_home);
if (savedInstanceState == null)
replaceFragment(LandingFragment.newInstance(), LandingFragment.TAG, false);
mSharedPreferences= PreferenceManager.getDefaultSharedPreferences(this);
mEditor=mSharedPreferences.edit();
mContext=this;
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(Plus.API)
.addScope(Plus.SCOPE_PLUS_LOGIN)
.build();
}
public void replaceFragment(Fragment fragment, String fragmentTag, boolean addToBackstack) {
FragmentManager fragmentManager = getSupportFragmentManager();
if (addToBackstack)
fragmentManager.beginTransaction()
.replace(R.id.flFragmentHolder, fragment, fragmentTag).addToBackStack("")
.commit();
else
fragmentManager.beginTransaction()
.replace(R.id.flFragmentHolder, fragment, fragmentTag)
.commit();
}
#Override
public void onHomeFragmentInteraction(View view) {
int viewId = view.getId();
switch (viewId) {
case R.id.cfbSignUp:
replaceFragment(SignUpFragment.newInstance(), SignUpFragment.TAG, true);
break;
case R.id.cfbLogin:
replaceFragment(LoginFragment.newInstance(), LoginFragment.TAG, true);
break;
}
}
#Override
public void onSignUpFragmentInteraction(View view) {
int viewId = view.getId();
switch (viewId) {
case R.id.cftvSignUpTitle:
getSupportFragmentManager().popBackStackImmediate();
}
}
#Override
public void onLoginFragmentInteraction(View view) {
int viewId = view.getId();
switch (viewId) {
case R.id.cftvForgotPassword:
replaceFragment(ForgotPasswordFragment.newInstance(), ForgotPasswordFragment.TAG, true);
break;
case R.id.cfbLogin:
Intent mainActivityIntent = new Intent(this, MainActivity.class);
startActivity(mainActivityIntent);
finish();
break;
case R.id.cftvLoginTitle:
getSupportFragmentManager().popBackStackImmediate();
}
}
#Override
public void onBackPressed() {
if (!getSupportFragmentManager().popBackStackImmediate())
super.onBackPressed();
}
#Override
public void onForgotPasswordFragmentInteraction(View view) {
int viewId = view.getId();
switch (viewId) {
case R.id.cftvForgotPasswordTitle:
getSupportFragmentManager().popBackStackImmediate();
}
}
#Override
protected void onStart() {
super.onStart();
//
}
#Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
#Override
public void onConnected(Bundle bundle) {
mSignInClicked = false;
// Toast.makeText(this, "User is connected!", Toast.LENGTH_LONG).show();
getProfileInformation();
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult result) {
if (!result.hasResolution()) {
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this,
0).show();
if(progress!=null&&progress.isShowing())
progress.dismiss();
return;
}
if (!mIntentInProgress) {
// Store the ConnectionResult for later usage
mConnectionResult = result;
resolveSignInError();
}
}
protected void onActivityResult(int requestCode, int responseCode, Intent intent) {
super.onActivityResult(requestCode,responseCode,intent);
if (requestCode == RC_SIGN_IN) {
if (responseCode != RESULT_OK) {
mSignInClicked = false;
}
mIntentInProgress = false;
if (!mGoogleApiClient.isConnecting()) {
mGoogleApiClient.connect();
}
}
}
/**
* Sign-in into google
*/
public void signInWithGplus() {
if(Utilities.isOnline(this)) {
progress = ProgressDialog.show(this, "",
"Loading...", true);
if (!mSharedPreferences.contains(Constants.SHARED_PREFS_B_GMAIL_SOURCE)||!mGoogleApiClient.isConnected()) {
mSignInClicked = true;
if(mConnectionResult!=null)
resolveSignInError();
else
mGoogleApiClient.connect();
} else if(mGoogleApiClient.isConnected()){
getProfileInformation();
}
else if (mSharedPreferences.getBoolean(Constants.SHARED_PREFS_B_GMAIL_SOURCE, false)) {
login();
}
else {
if(progress!=null)
{
progress.dismiss();
}
}
}
else
{
Toast.makeText(this,"Please connect to internet",Toast.LENGTH_SHORT).show();
}
}
/**
* Method to resolve any signin errors
*/
private void resolveSignInError() {
if (mConnectionResult.hasResolution()) {
try {
mIntentInProgress = true;
mConnectionResult.startResolutionForResult(this, RC_SIGN_IN);
} catch (IntentSender.SendIntentException e) {
mIntentInProgress = false;
mGoogleApiClient.connect();
}
}
}
/**
* Fetching user's information name, email, profile pic
*/
private void getProfileInformation() {
try {
if (Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null) {
final Person currentPerson = Plus.PeopleApi
.getCurrentPerson(mGoogleApiClient);
String personName = currentPerson.getDisplayName();
String personPhotoUrl = currentPerson.getImage().getUrl();
String personGooglePlusProfile = currentPerson.getUrl();
final String email = Plus.AccountApi.getAccountName(mGoogleApiClient);
Log.e(getClass().getSimpleName(), "Name: " + personName + ", plusProfile: "
+ personGooglePlusProfile + ", email: " + email
+ ", Image: " + personPhotoUrl);
final WebserviceApi webserviceApi=Utilities.getWebservice(mContext);
if(webserviceApi!=null)
{
webserviceApi.signupFromSource(email, personName, 'c', "google", "gmail", new BusNetworkCallback<Response>() {
#Override
public void onSuccess(Response obj) {
if (progress != null & progress.isShowing())
progress.dismiss();
Log.d(getClass().getSimpleName(), " success");
if (obj.getResult() != null && obj.getResult().equals("success")) {// Utilities.showAlertDialog(mContext,"Alert","User registered successfully.");
mEditor.putBoolean(Constants.SHARED_PREFS_B_GMAIL_SOURCE, true);
mEditor.putString(Constants.SHARED_PREFS_S_GMAIL_EMAIL, email);
mEditor.putString(Constants.SHARED_PREFS_S_GMAIL_EMAIL, currentPerson.getId());
mEditor.commit();
login();
} else if (obj.getError() != null && obj.getError().length() > 0) {
if (obj.getError().contains("Email")) {
mEditor.putBoolean(Constants.SHARED_PREFS_B_GMAIL_SOURCE, true);
mEditor.putString(Constants.SHARED_PREFS_S_GMAIL_EMAIL, email);
mEditor.putString(Constants.SHARED_PREFS_S_GMAIL_EMAIL, currentPerson.getId());
mEditor.commit();
login();
} else {
Utilities.showAlertDialog(mContext, "Error", obj.getError());
{
if (progress != null & progress.isShowing())
progress.dismiss();
}
}
} else {
Utilities.showAlertDialog(mContext, "Error", "Some error occured please try later");
{
if (progress != null & progress.isShowing())
progress.dismiss();
}
}
}
#Override
public void onFailure(RetrofitError error) {
if (progress != null & progress.isShowing())
progress.dismiss();
super.onFailure(error);
}
});
}
else
{
if(progress!=null)
{
progress.dismiss();
}
}
} else {
Toast.makeText(getApplicationContext(),
"No information found from google", Toast.LENGTH_LONG).show();
if(progress!=null&progress.isShowing())
progress.dismiss();
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"No information found from google", Toast.LENGTH_LONG).show();
if(progress!=null&progress.isShowing())
progress.dismiss();
}
}
private void login() {
WebserviceApi webserviceApi=Utilities.getWebservice(this);
if(webserviceApi!=null) {
if (mSharedPreferences.contains(Constants.SHARED_PREFS_S_GMAIL_EMAIL))
webserviceApi.loginFromSource(Constants.SHARED_PREFS_S_GMAIL_EMAIL , Constants.SHARED_PREFS_S_GMAIL_ID,
new BusNetworkCallback<Response>() {
#Override
public void onSuccess(Response obj) {
progress.dismiss();
Log.d(getClass().getSimpleName(), " success");
if (obj.getResult() != null && obj.getResult().equals("success")) {
Constants.userDetails = obj.getData();
Gson gson = new Gson();
mEditor.putString(Constants.SHARED_PREFS_S_USER_DETAILS, gson.toJson(Constants.userDetails));
mEditor.commit();
Intent mainActivityIntent = new Intent(mContext, MainActivity.class);
startActivity(mainActivityIntent);
finish();
} else if (obj.getError() != null && obj.getError().length() > 0)
Utilities.showAlertDialog(mContext, "Error", obj.getError());
else
Utilities.showAlertDialog(mContext, "Error", "Some error occurred. Please try again later.");
}
#Override
public void onFailure(RetrofitError error) {
if(progress!=null&progress.isShowing())
progress.dismiss();
super.onFailure(error);
Utilities.showAlertDialog(mContext, "Error", "Some error occurred. Please try again later.");
}
}
);
}
else
{
if(progress!=null&progress.isShowing())
progress.dismiss();
}
}
}

Why is musicSrv null?

Server connection:
private ServiceConnection musicConnection = new ServiceConnection(){
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicBinder binder = (MusicBinder)service;
//get service
musicSrv = binder.getService();
Log.i("Test",binder.getService().toString());
//pass list
musicSrv.setList(songList);
musicBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};
Where I get an error:
public void songPicked(View view){
musicSrv.setSong(Integer.parseInt(view.getTag().toString()));
musicSrv.playSong();
Log.d("Item clicked","Song picked"+Integer.parseInt(view.getTag().toString()));
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
MusicService.java
package com.musicplayer;
import android.app.Service;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.media.MediaPlayer;
import android.os.IBinder;
import java.util.ArrayList;
import android.content.ContentUris;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Binder;
import android.os.PowerManager;
import android.util.Log;
import java.util.Random;
import android.app.Notification;
import android.app.PendingIntent;
import com.lyricscloud.R;
public class MusicService extends Service implements
MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener,
MediaPlayer.OnCompletionListener {
//media player
private MediaPlayer player;
//song list
private ArrayList<Song> songs;
//current position
private int songPosn;
private String songTitle="";
private static final int NOTIFY_ID=1;
private final IBinder musicBind = new MusicBinder();
public void setList(ArrayList<Song> theSongs){
songs=theSongs;
}
public class MusicBinder extends Binder {
MusicService getService() {
return MusicService.this;
}
}
public void initMusicPlayer(){
player.setWakeMode(getApplicationContext(),
PowerManager.PARTIAL_WAKE_LOCK);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setOnPreparedListener(this);
player.setOnCompletionListener(this);
player.setOnErrorListener(this);
}
public void onCreate(){
super.onCreate();
//initialize position
songPosn=0;
//create Player
player = new MediaPlayer();
initMusicPlayer();
}
#Override
public void onDestroy() {
stopForeground(true);
}
public void playSong(){
player.reset();
Song playSong = songs.get(songPosn);
songTitle=playSong.getTitle();
//get id
long currSong = playSong.getID();
//set uri
Uri trackUri = ContentUris.withAppendedId(
android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
currSong);
try{
player.setDataSource(getApplicationContext(), trackUri);
}
catch(Exception e){
Log.e("MUSIC SERVICE", "Error setting data source", e);
}
player.prepareAsync();
}
#Override
public boolean onUnbind(Intent intent){
player.stop();
player.release();
return false;
}
#Override
public IBinder onBind(Intent intent) {
return musicBind;
}
public void onCompletion(MediaPlayer mp) {
if(player.getCurrentPosition() <= 0){
mp.reset();
playNext();
}
}
public int getPosn(){
return player.getCurrentPosition();
}
public int getDur(){
return player.getDuration();
}
public boolean isPng(){
return player.isPlaying();
}
public void pausePlayer(){
player.pause();
}
public void seek(int posn){
player.seekTo(posn);
}
public void go(){
player.start();
}
public void playPrev(){
songPosn--;
if(songPosn <= 0) songPosn=songs.size()-1;
playSong();
}
public void playNext(){
songPosn++;
if(songPosn >= songs.size()) songPosn=0;
playSong();
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
return false;
}
public void setSong(int songIndex){
songPosn=songIndex;
Log.d("Service", ""+songIndex);
}
#Override
public void onPrepared(MediaPlayer mp) {
mp.start();
Intent notIntent = new Intent(this, MusicPlayer_Songs.class);
notIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendInt = PendingIntent.getActivity(this, 0,
notIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentIntent(pendInt)
.setTicker(songTitle)
.setOngoing(true)
.setContentTitle("Playing");
builder.setContentText(songTitle);
Notification not = builder.build();
startForeground(NOTIFY_ID, not);
}
}
The error
08-04 22:50:31.796 23825-23825/com.lyricscloud.dev E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.lyricscloud.dev, PID: 23825
java.lang.NullPointerException
at com.musicplayer.MusicPlayer_Songs.songPicked(MusicPlayer_Songs.java:47)
at com.musicplayer.MusicPlayer_Songs$3.onItemClick(MusicPlayer_Songs.java:117)
at android.widget.AdapterView.performItemClick(AdapterView.java:308)
at android.widget.AbsListView.performItemClick(AbsListView.java:1478)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:3480)
at android.widget.AbsListView$3.run(AbsListView.java:4823)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)
I'm not sure whats causing it, I need help please, the app is a musicplayer and whenever I click a list item it gives me that error
onStart() callback:
public void onStart() {
super.onStart();
if(playIntent==null){
Log.i("Play Intent","Is null");
playIntent = new Intent(c, MusicService.class);
//c is rootView.getContext() from onCreateView()
c.bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
c.startService(playIntent);
}
}