I want to develop app that doesn't have icon launcher. The app will run alarmscheduler which triggered when app is installed or phone is rebooted.
The problem is how can I open the activity since the app doesn't have intent filter like below:
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
Is there a way to handle dial code such as ##4635*#*# to open the activity ?
or any other solutions are welcomed.
You can do it with two ways:
1) as answer by #KishuDroid
2) By define code in manifest
public class MySecretCodeReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("android.provider.Telephony.SECRET_CODE")) {
Intent i = new Intent(context, MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
}
In manifest file
<receiver android:name=".MySecretCodeReceiver">
<intent-filter>
<action android:name="android.provider.Telephony.SECRET_CODE" />
<data android:scheme="android_secret_code" android:host="4635" />
</intent-filter>
</receiver>
Note:
In Second method you must have to dial *#*#your_code#*#* and dont need to press call button
But in first method you can customise your prefix or postfix of code. For example *#your_code# or **your_code##. but you need to press call button.
You have to use Broadcast Receiver...
public class OutgoingCallReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
if(null == bundle)
return;
String phonenumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.i("OutgoingCallReceiver",phonenumber);
Log.i("OutgoingCallReceiver",bundle.toString());
if(code.equals("#056700") {
intent.setComponent(new ComponentName("com.example", "com.example.yourActivity"));
And Your Android Manifest
<receiver android:name="com.varma.samples.detectcalls.receivers.OutgoingCallReceiver">
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
</intent-filter>
</receiver>
Also, include the permission:
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
Related
recently I use BOOT_COMPLETED 2 app (A app, and B app)
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
A app is activity and B app is service app
when my device boot,
first A app launch and B app launch
so, show B app screen.
I want
first B app launch and A app launch showing A app screen
perhaps, Can I give BOOT_COMPLETED Priority is possible?
finally, I want when I boot my device, show A app screen
Thanks!
add
I try
B app(service)
public class BootCompletedReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED) {
Intent i = new Intent("A app package name.BOOT_COMPLETED");
context.sendBroadcast(i);
}
}
}
<receiver android:name=".BootCompletedReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
A app(activity)
public class BootSendReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context,Intent intent) {
if( intent.getAction().equals("B app packagename.BOOT_COMPLETED"));
Intent i = new Intent (context, MainActivity.class);
context.startActivity(i);
}
}
<receiver android:name=".BootSendReceiver">
<intent-filter>
<action android:name="blackeyeonandroid.iosystem.co.kr.simpleserviceexample.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
and I try boot .. but showing B app screen
I think you can not control that..
Instead, you can make APP1 start the APP2. This way, only APP1 receives the BOOT_COMPLETE message. Then, APP1 is responsible to send a new intent to start APP2:
Maybe, you can do as follows (note that APP2 does not receive android's default BOOT_COMPLETED message):
APP1
Manifest:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".AppToStartFirstBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Receiver
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Intent i = new Intent("com.example.mytestapp.BOOT_COMPLETED");
context.sendBroadcast(i);
}
}
APP2
Manifest:
<receiver android:name=".AppToStartLaterBroadcastReceiver">
<intent-filter>
<action android:name="com.example.mytestapp.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Receiver
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("com.example.mytestapp.BOOT_COMPLETED")) {
// Do what you want in secundary APP
}
}
Note
This is an suggestion and you should adjust to your case. Since I don't have more details about your code, you may need to modify it to your case.. But you can use the idea.
This is what I have so far but nothing happens when I input this combination in dialer
public class DialReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, final Intent intent) {
if (intent.getAction().equals(android.content.Intent.ACTION_NEW_OUTGOING_CALL)) {
String phoneNumber = intent.getExtras().getString( android.content.Intent.EXTRA_PHONE_NUMBER );
if(phoneNumber.equals("*#588637#")) {
Intent intent1 = new Intent(context , Activity.class);
intent1.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
context.startActivity(intent1);
}
}
}
}
and in androidmanifest
<receiver
android:name=".receiver.DialReceiver"
android:exported="true"
android:process=":background"
tools:ignore="ExportedReceiver" >
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
Try with these small changes..
String phoneNumber = intent.getExtras.getString("Intent.EXTRA_PHONE_NUMBER");
if(phoneNumber.equals("*#588637#")) {
//do your stuff
}
And do not forget to add this line in your Manifest.xml file
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
Also you may find these helpful..
http://android.programmerguru.com/simple-dialer-application/
http://tikuflower.blogspot.com/2011/12/android.html
Is the receiver getting the broadcast at all? If not, maybe you forgot to include the PROCESS_OUTGOING_CALLS permission.
Try This,
Add to this in manifest,
here host is 12456, so your secret code is *#*#123456#*#* (dial-in dialped)
<receiver android:name=".Dialer"> //here is your broadcast receiver class
<intent-filter>
<action android:name="android.provider.Telephony.SECRET_CODE" />
<data android:scheme="android_secret_code"
android:host="123456"
/>
</intent-filter>
</receiver>
here is your Broadcast Receiver class :
class Dialer : BroadcastReceiver() {
override fun onReceive(context: Context?, intent: Intent?) {
// Declare Here your launcher activity in Intent
var i : Intent = Intent(context, MainActivity::class.java)
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context!!.startActivity(i);
}
}
According to ridoy's 2nd link,
http://tikuflower.blogspot.com/2011/12/android.html
It should be
String phoneNumber = intent.getStringExtra("android.intent.extra.PHONE_NUMBER");
rather than
String phoneNumber = intent.getExtras.getString("Intent.EXTRA_PHONE_NUMBER");
That change works for me at least...
I've a reciever
public class MyBroadcastReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Intent myStarterIntent = new Intent(context, MainActivity.class);
context.startActivity(myStarterIntent);
}
}
and have modified the AndroidManifest.xml, adding these lines
<receiver
android:enabled="true"
android:name=".MyBroadcastReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
to section.
The application still does not start on system boot..any ideas appreciated. At least how can I monitor what is going on after device reboot (because I cant just use breakpoints in that case)
You need to provide Intent.FLAG_ACTIVITY_NEW_TASK flag when starting activity from BroadcastReceiver.
Intent myStarterIntent = new Intent(context, MainActivity.class);
myStarterIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(myStarterIntent);
This is how you can test the BroadcastReceiver.
So in fragment class, I have a AsyncTask class and there I am calling BroadcastReceiver at onPostExecute() method of AsyncTask -
Android Manifest -
<receiver
android:name="com.iddl.main.IncomingBBStream"
android:label="IncomingBBStream">
<action android:name="com.iddl.main.BBbroadcast" />
<intent-filter>
<action android:name="android.bluetooth.
device.action.ACL_DISCONNECTED" />
</intent-filter>
</receiver>
Fragment Class -
#Override
protected void onPostExecute(Void result)
{
Intent intent = new Intent();
intent.setAction("com.iddl.main.BBbroadcast");
intent.putExtra("uuid", uuid);
getActivity().sendBroadcast(intent);
}
BroadcastReceiver Class -
public class IncomingBBStream extends BroadcastReceiver {
public void onReceive(Context context, Intent intent)
{
Log.i(TAG, "onReceive BroadcastReceiver------");
}
It should at least print the log message but it not doing so.
NOTE:
I have to add intent.setClass(getActivity(), IncomingBBStream.class); to get it work but that doesn't make sense because I already passed the action "com.iddl.main.BBbroadcast" that matches with the manifest's receiver name "com.iddl.main.IncomingBBStream". So it knows which class to call.
you probably want to do that:
<receiver
android:name="com.iddl.main.IncomingBBStream"
android:label="IncomingBBStream">
<intent-filter>
<action android:name="com.iddl.main.BBbroadcast"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
<intent-filter>
<action android:name="android.bluetooth.
device.action.ACL_DISCONNECTED"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</receiver>
each intent filter separate on its own tag and always include the default category.
I am new to android ,how can I know if the call button is pressed or i can replace default dialer activity using my dialer I have used following code
<receiver android:name="CallService">
<intent-filter>
<action android:name="android.intent.action.CALL_BUTTON" />
</intent-filter>
</receiver>
and here is my broadcast
public void onReceive(Context context, Intent intent)
{
String mAction = intent.getAction();
Log.e("Intent", mAction);
}
But its not receiving any intent