im trying to make basic beacon application in android studio. I just want to scan beacons and list them into the screen. Here are my codes. I took them from somewhere.
public class MainActivity extends ActionBarActivity {
private static final String ESTIMOTE_PROXIMITY_UUID = "B9407F30-F5F8-466E-AFF9-25556B57FE6D";
private static final Region ALL_ESTIMOTE_BEACONS = new Region("regionId", null, null, null);
private BeaconManager beaconManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
beaconManager.setRangingListener(new BeaconManager.RangingListener() {
#Override public void onBeaconsDiscovered(Region region, List<Beacon> beacons) {
Log.d("TAG", "Ranged beacons: " + beacons);
}
});
}
#Override
protected void onStart() {
super.onStart();
beaconManager.connect(new BeaconManager.ServiceReadyCallback() {
#Override public void onServiceReady() {
try {
beaconManager.startRanging(ALL_ESTIMOTE_BEACONS);
} catch (RemoteException e) {
Log.e("TAG","Cannot start ranging", e);
}
}
});
}
#Override
protected void onStop() {
super.onStop();
try {
beaconManager.stopRanging(ALL_ESTIMOTE_BEACONS);
} catch (RemoteException e) {
Log.e("TAG", "Cannot stop but it does not matter now", e);
}
}
#Override
protected void onDestroy() {
super.onDestroy();
beaconManager.disconnect();
}
}
Here is my manifest.xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.oem.estimote_ibeacon_app" >
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="com.estimote.sdk.service.BeaconService"
android:exported="false"/>
</application>
</manifest>
When i opened application it says "stopped" please help. I have beacons for test. Where is my mistake? Thank you.
it seems that ALL_ESTIMOTE_BEACONS in
beaconManager.startRanging(ALL_ESTIMOTE_BEACONS);
is null.
enter a valid regionid instead of "regionid" in
private static final Region ALL_ESTIMOTE_BEACONS = new Region("regionId", null, null, null);
Related
When I start JobIntentService, it works fine, but after entering phone-sleep it suspends after some time. When I unlock my phone, it starts working again.
I want to have a long task working in background, it have to not suspend or stop.
Here's my JobInteneService:
public static void enqueueWork(Context context, Intent work) {
enqueueWork(context, ExampleJob.class, 1, work);
}
#Override
public void onCreate() {
Log.d(TAG, "onCreate() called");
super.onCreate();
}
#Override
protected void onHandleWork(#NonNull Intent intent)
{
cancelRingtone = Uri.parse("android.resource://com.example.myapplication/" + R.raw.cancel);
cancelAlarm = RingtoneManager.getRingtone(this, cancelRingtone);
while(running)
{
cancelAlarm.play();
try
{
Thread.sleep(60000);
}
catch (Exception e)
{
Log.i(TAG, "onHandleWork: "+e);
running=false;
}
}
}
#Override
public void onDestroy() {
Log.d(TAG, "onDestroy() called");
super.onDestroy();
}
Here's MainActivity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActivityCompat.requestPermissions(this,new String[]{
Manifest.permission.WAKE_LOCK
}, 1);
}
public void click(View view)
{
Intent mIntent = new Intent(this, ExampleJob.class);
ExampleJob.enqueueWork(this, mIntent);
}
Here's AndroidManifest.xml:
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".ExampleJob"
android:permission="android.permission.BIND_JOB_SERVICE"/>
</application>
With this code my phone will play beep sound every minute. In phone-sleep mode I count up to 6 beeps in half an hour.
Did I implement JobIntentService properly?
If JobIntentService isn't made for that work, what else should I use?
I am working on an application for collecting crash reports in application, so that I have created class which extends Application for handling uncaught exception and created service class for communicate with server.
I made a simple divide by zero exception in a button click and it produce exception but my service class does not called. I am sure have registered the service class in manifest file.
my question is Will Service concept work even if application is crashed (force close) in Android?
code:
public class MyApp extends Application {
public void onCreate() {
Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
#Override
public void uncaughtException(Thread thread, Throwable e) {
handleUncaughtException(thread, e);
}
});
}
public void handleUncaughtException(Thread thread, Throwable e) {
e.printStackTrace();
Intent i = new Intent(MyApp.this, ServiceClass.class);
startService(i);
}
}
Service class:
public class ServiceClass extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public void onLowMemory() {
super.onLowMemory();
}
#Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.e("onStartCommand", "onStartCommand called");
// server communication code.
return Service.START_STICKY;
}
}
Manifest xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ex.errorhandle"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:name="com.ex.errorhandle.MyApp"
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name="com.ex.errorhandle.ServiceClass" />
</application>
</manifest>
I am developing project uses iBeacons library
Is this the code that recognize my Beacon ?
beaconManager.startMonitoringBeaconsInRegion(new Region("D1B024CB-A02D-4650-9C6A-BAEDA8A31F0E", null, null, null));
i have UUID Major and Minor, how to use them ?
Hope so this will help you
public class RangingActivity extends Activity implements BeaconConsumer {
protected static final String TAG = "RangingActivity";
private static final String UUID = "XXXXXXXXXXXXXXXXXXXX";
private BeaconManager beaconManager = BeaconManager.getInstanceForApplication(this);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ranging);
beaconManager.bind(this);
}
#Override
protected void onDestroy() {
super.onDestroy();
beaconManager.unbind(this);
}
#Override
public void onBeaconServiceConnect() {
beaconManager.setRangeNotifier(new RangeNotifier() {
#Override
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
if (beacons.size() > 0) {
Log.i(TAG, "The first beacon I see is about "+beacons.iterator().next().getDistance()+" meters away.");
}
}
});
try {
beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", Identifier.parse(UUID), null, null));
} catch (RemoteException e) { }
beaconManager.getBeaconParsers().add(new BeaconParser()
.setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
}
}
in AndroidManifest.xml
permissions
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
Register
<service
android:name="org.altbeacon.beacon.service.BeaconService"
android:enabled="true"
android:exported="true"
android:isolatedProcess="false"
android:label="beacon" >
</service>
<service
android:name="org.altbeacon.beacon.BeaconIntentProcessor"
android:enabled="true" >
</service>
<receiver android:name="org.altbeacon.beacon.startup.StartupBroadcastReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
</intent-filter>
</receiver>
pass major and minor in place of null
Region region = new Region("myRangingUniqueId", uUID, major, minor);
hy..i have a task to make my kitkat-nexus to act as a tag. I have ACS 122U as reader. i have read the program example in this site http://blog.opendatalab.de/hack/2013/11/07/android-host-card-emulation-with-acr122/. then i tryed the code on my own eclipse.
main activity :
public class MainActivity extends Activity implements OnMessageReceived, ReaderCallback {
private NfcAdapter nfcAdapter;
private ListView listView;
private IsoDepAdapter isoDepAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView)findViewById(R.id.listView);
isoDepAdapter = new IsoDepAdapter(getLayoutInflater());
listView.setAdapter(isoDepAdapter);
nfcAdapter = NfcAdapter.getDefaultAdapter(this);
Log.i("end of onCreate-----","onCreate HCE");
}
#Override
public void onResume() {
super.onResume();
//nfcAdapter.enableReaderMode(this, this, NfcAdapter.FLAG_READER_NFC_A | NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK,
// null);
//nfcAdapter.disableReaderMode(this); //tambahan poipo
Log.i("onResume---", "onResume");
}
#Override
public void onPause() {
super.onPause();
nfcAdapter.disableReaderMode(this);
Log.i("onPause---", "onPause");
}
#Override
public void onTagDiscovered(Tag tag) {
IsoDep isoDep = IsoDep.get(tag);
IsoDepTransceiver transceiver = new IsoDepTransceiver(isoDep, this);
Thread thread = new Thread(transceiver);
Log.i("dibawah thread", "ontagdiscovered");
thread.start();
}
#Override
public void onMessage(final byte[] message) {
runOnUiThread(new Runnable() {
#Override
public void run() {
isoDepAdapter.addMessage(new String(message));
Log.i("didlmrun---", "onMessage");
}
});
Log.i("diluarrun---", "onMessage");
}
#Override
public void onError(Exception exception) {
onMessage(exception.getMessage().getBytes());
}
}
hostapduservice :
...
...
...
#Override
public byte[] processCommandApdu(byte[] apdu, Bundle extras) {
if (selectAidApdu(apdu)) {
Log.i("HCEDEMO====", "Application selected====");
return getWelcomeMessage();
}
else {
Log.i("HCEDEMO======", "Received: =====" + new String(apdu));
return getNextMessage();
}
}
...
...
...
then in the manifest file :
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="FEATURE_NFC_HOST_CARD_EMULATION"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<service
android:name=".MyHostApduService"
android:exported="true"
android:permission="android.permission.BIND_NFC_SERVICE" >
<intent-filter>
<action android:name="android.nfc.cardemulation.action.HOST_APDU_SERVICE" />
</intent-filter>
<meta-data
android:name="android.nfc.cardemulation.host_apdu_service"
android:resource="#xml/apduservice" />
</service>
<activity
android:name="de.grundid.hcedemo.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
ok,,when i ran the above source code,, i saw my acs122u blinking continously when i tapped my nexus near to it. but i didn't see the log.i(....) from hostapdu service. In the eclipse log cat, there were just some log.i from main activity. what should i do to bind that hostapdu service to main activity, so my nexus can act as a tag...???
thanks in advance... :-)
i am new to android. i want to make an app from where i can take pic using camera object. here is my simple code
public class Main extends Activity {
Camera camera;
ImageView iv;
Button b;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
camera = camera.open();
b = (Button) findViewById(R.id.bStartCamera);
iv = (ImageView) findViewById(R.id.imageView1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
if (camera != null) {
camera.takePicture(null, null, new CallBack());
} else {
Log.d("", "Camera Object is Null");
}
}
});
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
if (camera != null) {
camera.release();
camera = null;
}
}
class CallBack implements PictureCallback {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.d("", "In the Callback Method");
}
}
}
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.homescreensetter"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="10" />
<uses-permission android:name="android.permission.CAMERA"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.homescreensetter.Main"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
i tested this code on my device which have a back camera but the call back method onPictureTaken was never called when i take picture. please any kind of help will be much appriciated,Thanks