So i got two activities, a main then a secondary, we'll call them activity_A (main) and activity B( the second ).
So my activity_A is getting some data, then sending it to activity_B with this code :
Intent i = new Intent(this,activity_B.class);
i.putExtra("Charge_Batterie", bat);
startActivity(i);
activity_B receive it correctly with this code :
String bat = getIntent().getStringExtra("Charge_Batterie");
My problem is that my activity_A is refreashing it's value "bat", so when i send it with intent it doesn't refreash in activity_B.
So i'm wondering, is my activity_A sleeping ? If yes how can i make it stay alive ?
I´m doing the same thing and it works for a long time - activity A runs a timer and launches activity B with extras.
When I want to refresh activity B with "new extras", I´m doing this:
// check if activity B is created and running:
if (intent == null) {
System.out.println("Creating Activity - Intent is null");
intent = new Intent(context, ActivityB.class);
intent.putExtras(ImagedownloaderActivityBundle);
startActivity(intent);
}else {
System.out.println("Reloading Activity - Intent exists");
finish();
intent = new Intent(context, ActivityB.class);
intent.removeExtra("playlistsList");
intent.putExtras(ImagedownloaderActivityBundle);
startActivity(intent);
}
As far as I know, this isn´t the best way to achieve the background task - it should be running on a service, perhaps doing the same when one needs to refresh.
Related
I'm trying to open an already activity with animation open.
It will run it only first time which activity starts and then it will not work again
Here is the code :
var intent = new Intent(this, typeof(TableItemsMain))
.SetFlags(ActivityFlags.ReorderToFront);
StartActivity(intent);
OverridePendingTransition(Resource.Layout.trans_left_in, Resource.Layout.trans_left_out);
I have 3 Activities:
A: Parent Activity
B: first Child Activity
C: second Child Activity
In A Activity open B Activity when button is clicked
Intent i = new Intent(this, ActivityB.class);
startActivityForResult(i, 1);
In A Activity there is a Runnable object that in some condition open C Activity
Intent i = new Intent(this, Activityc.class);
startActivityForResult(i, 2);
All work and on device i see C Activity over B Activity over A Activity but when i close C Activity with this.finish(); in A Activity onActivityResult() event is not fired. It'll be fired only if i close the B Activity too.
How can i know in A Activity when C Activity is closed and let B Activity opened?
Whenever you wish to exit all open activities, you should press a button which loads the first Activity that runs when your application starts then clear all the other activities, then have the last remaining activity finish. to do so apply the following code in ur project
Intent intent = new Intent(getApplicationContext(), FirstActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("EXIT", true);
startActivity(intent);
The above code finishes all the activities except for FirstActivity. Then we need to finish the FirstActivity's Enter the below code in Firstactivity's oncreate
if (getIntent().getBooleanExtra("EXIT", false)) {
finish();
}
Please See this
so I have a doubt, I have 3 activities, in the first one I send some data to the second one, and in the second one I send some data to the third one and finish the second one, is there a way I can finish the third activity and send some data to the first activity from the third?
This is what I'm doing in the first activity.
mStartGame.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(view.getContext(), GameInProgress.class);
i.putExtra("questionObject", questions);
startActivityForResult(i,DETAIL_REQUEST);
}
});
And in the second one after i get the extra I do this to send data to the third activity:
Intent i = new Intent(view.getContext(), StatisticsActivity.class);
i.putExtra("questionObject", questionInfo);
startActivity(i);
finish();
Now in the third I get the extras and then I:
Intent returnIntent = new Intent();
isCorrect = true;
returnIntent.putExtra("questionCorrection", isCorrect);
setResult(RESULT_OK, returnIntent);
finish();
I though this would work because when I finish the third activity the onActivityResult in the first activity method is working but when I try to access the Extras I get a nullpointerexception, so I don't know, thank you.
Sorry dude but I doubt your procedure of sending data from 3rd to 1st Activity.If data is simple string or integer. You can use Shared Preference Follow link
How to use Shared preference
Edit Shared Preference
Why Don't you also finish First activity and start new Instance of same activity through intent?
Android: new Intent() starts new instance with android:launchMode="singleTop"
i got single top to work as per the link above, but I am having a hard time putting "extras" in the intent and then performing a function on my original activity.. is this possible?
Intent I= new Intent(context, away.class);
I.putExtra("number", number);
I.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
this snippet is from my broadcast receiver and it refers back to my main class.. in my main class my code is like so..
Intent I = getIntent();
int number = I.getIntExtra("number", -1);
so my question is the following..
how can i get my main activity to evaluate the number i send back and then fire a function when my receiver class fires it?
You have to override onNewIntent and get the extra there.
You have to override onNewIntent and get the extra there.
#Override
protected void onNewIntent(Intent intent)
{
super.onNewIntent(intent);
int number = intent.getIntExtra("number", -1);
}
In your broadcast receiver
Intent I = new Intent(context, away.class);
I.putExtra("number", number);
Log.d("here", "number = " + number);
I.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(I);
i make a lock screen application.. i have some service that listen to the SMS.. when the SMS receiving command andro-lock then i display a lock screen that called by service:
here'e the service's code :
if (tempMessage[0].toString().equalsIgnoreCase("andro-lock") && tempMessage[1].toString().equals(tempPassword.toString()))
{
//Toast.makeText(ListenSMSservice.this, "Menjalankan command andro-lock", Toast.LENGTH_LONG).show();
openDatabase();
updateStatusL();
Intent myIntent = new Intent(ListenSMSservice.this,LockScreenForm.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getApplication().startActivity(myIntent);
}
that code has works perfecly, but i have some problem when i try to unlock my phone.. if my service receive command andro-unlock then i must close (finish) that lockscreen.java.. i was trying many code and still not works.. what must i do to close the lockscreen activity when my service receiving command andro-unlock?? please help..
else if (tempMessage[0].toString().equalsIgnoreCase("andro-unlock") && tempMessage[1].toString().equals(tempPassword.toString()))
{
//what must i do??
//any solution??
}
Thanks for your help..
A possible solution to stop the activity would be:
Intent myIntent = new Intent(ListenSMSservice.this,LockScreenForm.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Bundle myKillerBundle = new Bundle();
myKillerBundle.putInt("kill",1);
myIntent.putExtras(myKillerBundle);
getApplication().startActivity(myIntent);
In LockScreenForm
onCreate(Bundle bundle){
if(this.getIntent().getExtras().getInt("kill")==1)
finish();
}
You could send an intent to your activity with an extra, and the activity could read this extra and, if present, finish() itself.
Regards,
Stéphane