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I'm trying to build activity aware app.
I used the activity recognition example from android developers as starting point.
In this example the moment the user starts moving notification appears with request to turn on the GPS.
I'm trying to replace this notification with an alarm dialog box and some sound.
the simple and most common alert box that I found is not working for me since it is imposible to create an allert from service.
Thanks to Harsh for giving me an idea of activity.
I will post the code the moment it will work.
Thank you in advance
as promised the working code of an alert box invoked from service :
1) the code in the service file:
Intent intent;
intent = new Intent(this, MyAlert.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
2) the code in the alert activity .java file :
public class MyAlert extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_alert);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Your Message")
.setCancelable(false)
.setNeutralButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, just close
// the dialog box and do nothing
stopService(getIntent());
dialog.cancel();
finish();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
3)alert activity manifest was left empty of code, just a layout
4)the manifest.xml:
<activity
android:name="com.igor.map.MyAlert"
android:theme="#android:style/Theme.Dialog">
</activity>
All works, one thing still has a problem, when i press the Ok button the allert closes but the label of the app stays until I click on screen.
Start an Activity from service, and declare activity as dialog in your manifest. Like this
<activity
android:name="com.example.DialogActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.Dialog">
Related
I have and android application in which I am initializing a third party library in the onCreate() of the main activity. Now when there is any runtime error in initialization of the library, My application will crash and at that point I want to show an AlertDialogue to the user saying "some error message" in the dialogue box.
The problem is that when the application crashes, my alert dialogue is showing up but it is dismissed along with the application. I want it to be persisted even when the application crashes.
Below is the code of alert dialogue which I used.
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage("Error!")
.setCancelable(true)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//do things
}
});
AlertDialog alert = builder.create();
alert.show();
Can anyone guide me in how to make that AlertDialogue independent of the activity, so that it doesn't require the app window. If not possible, then what other widgets, I can use or customize?
If you want your app to keep running, avoid crashing.
If you want special handling for issues in a library init, catch the relevant exceptions and keep the app running in a state that shows the dialog and then does something else, such as finish()ing the activity that had a problem in its init.
To avoid the 3rd party library from taking down your app, wrap its API calls in a try/catch block, e.g.:
try
{
BuggyLibrary.init(); // example
}
catch (Exception e)
{
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage("Error!")
.setCancelable(true)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//do things
}
});
AlertDialog alert = builder.create();
alert.show();
}
You'll need to consider the other implications of this library not initializing ... if your app can't continue functioning without it you'll need to gracefully finish() your Activity when the dialog is dismissed.
May be it's possible to achieve something like that.
There is a library that allows you to show activity when your app crashes. Basically it launches new activity in another process.
At the same time you can show activity as a dialog by using Theme.AppCompat.Dialog for your activity as a theme.
Perhaps combining these two approaches will get what you want.
P.S. Or by using old fashioned try-catch as some people suggest.
Some services vary between Android and iPhone, for example floating widget, widget on the home screen, can I make them using flutter
Can I view a dialog on the home screen like this example?
update
thank everyone answer, but I need how to get it in Flutter
Yes you can show that
new AlertDialog.Builder(YourActivity.this)
.setTitle("Alert")
.setMessage("Alert Message")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//Here you can do whatever you want to do on click
}
}).show();
Sorry you can't do it in iOS, however in Android, you can, all you need to do is write platform specific code.
You could create an Activity with the Theme.Dialog theme. In your AndroidManifest.xml file add the theme to the activity, like this:
<activity android:name=".DialogActivity" android:theme="#android:style/Theme.Dialog"></activity>
From your service simply start this Activity. You will have to start the activity with the Intent.FLAG_ACTIVITY_NEW_TASK flag. See How to start an Activity from a Service
Source
I have an AlertDialog with an OK button in my activity by using this code:
alertDialog = new AlertDialog.Builder(getApplicationContext()).create();
//Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Welcome to AndroidHive.info");
// Setting Icon to Dialog
alertDialog.setIcon(R.drawable.icon);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
}
});
alertDialog.show();
This works fine within the application, but I want this to be ran and show even if we're outside of the application. Of course with the application still running and not closed. Much like Toast. even if I can use a Toast with an OK button I'd be happy.
Any help is appreciated. Thanks.
You can't run a dialog as standalone. You will have to get an Activity to display your dialog. In my mind, your solution would lead to a bad user experience if every app could launch a modal dialog whenever it wants.
But you can imagine 2 solutions :
bringing up an activity with this dialog open (maybe you could make the activity transparent) when a certain intent is sent to the system.
use notifications, it looks quite close from what you want to do.
Initial description:
My application handles some events and do some task related to that event, even if application is in background. I am using receivers.
Problem description
I want to show notification when an event starts or end.
What I did yet
I used Notification manager :- But I need to show notification on home screen not on notification bar.
I used App widget :- But user will not able to notice any changes in information on app widget easily, because this does not do any eye catching effect.
I used Toast :- But this having time limitation to show, I want to show notification until user close.
So what should be the option? How can I do my task?
Please refer below image, as what I want
Unfortunately, you've explored all the possible options. What you want to achieve is not provided intentionally because it will make for very bad user experience. Imagine a notification (of the kind that you want) popping up when you are looking at an email!
Attention piracy
When your app is in the foreground, you can do a lot of things.
When your app is not in the foreground, there are only two options
Start an activity: You must do this only if essential (like an incoming phone call activity). If the user deems it more irritating than useful, your app is going down the drain!
Use the notification manager.
An option is to use Alert Dialogs
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to exit?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MyActivity.this.finish();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
Or you can use run an Activity with the Dialog theme.
I was wondering if anyone can tell if how to pop a dialog screen up over a native Android screen?
I currently have an application that traps an outgoing call and stops it, I then want to pop up a dialog that would take over from the dialler screen and alert the user that there attempt to call has been blocked and allow them have some new options from the dialog.
I know that some people will say that I should use notifications instead but I'm aware of that and its not the way that it should work, I need to be able to pop up a dialog when the call gets trapped.
This is my dialog code so far
AlertDialog LDialog = new AlertDialog.Builder(context)
.setTitle("Call Blocked")
.setMessage("Call Blocked, reroute call?")
.setPositiveButton("ok", null).create();
LDialog.show();
I presume I have to somehow get the context to be that of the dialler screen?
Can anyone offer any help and assistance or links to tutorials?
Thanks in advance
For my application I used an activity with the Dialog theme.
You can declare the theme in the manifest file :
<activity android:name="PopupActivity"
android:launchMode="singleInstance" android:excludeFromRecents="true"
android:taskAffinity="" android:theme="#android:style/Theme.Dialog" />
use launcheMode="singleInstance" and taskAffinity="" if your popup is detached from your main application. Otherwise user may click the back button and return to the previous activity of your application.
excludeFromRecents="true" to avoid your popup to appear in recent tasks (long press home)
theme="#android:style/Theme.Dialog" to set the Dialog theme.
How to get the equivalent of launchMode = singleTask in code
I have not seen a clear explanation of how to set these flags programmatically, so I will include my results here. tldr: you have to set FLAG_ACTIVITY_NEW_TASK and FLAG_ACTIVITY_MULTIPLE_TASK.
If you launch this directly from your app, your dialog will appear on top of your app's last Activity. But if you use a PendingIntent broadcast by AlarmManager to launch your "dialog", you have time to switch to a different app so you can see that your "dialog" will appear over that other app, if the style is set appropriately to show what is behind it.
Obviously one should be responsible about when it is appropriate to display a dialog on top of other apps.
public class MyReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// you have to set these flags here where you receive the broadcast
// NOT in the code where you created your pendingIntent
Intent scheduledIntent = new Intent(context, AlertAlarmActivity.class);
scheduledIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
scheduledIntent.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
context.startActivity(scheduledIntent);