I'm having a slightly different purpose, but, I think I'm putting it wrong as no one from multiple forums is able to answer it. The original question is here: Pass URL data from AppLink to WebView
Basically, suppose I'm creating a web browser app with a splash screen and I want to accept the URL intents from other apps, receive them in my splash screen, pass them on to my WebView activity and load it there, how can I do that?
For example, if a user has my app installed, and he/she taps https://www.google.com/ as a link in some app, how can I load the URL in my app after showing my splash screen? I think, the intent receiver will be in the splash screen activity, and the WebView is in another activity. So, basically, I want to receive the URL in my splash screen activity and then, pass it on to my WebView. How to achieve this?
I think what youre trying to do is to recieve data from other apps
That way, you can recieve data in a Splash Screen Activity and then show it in a Web View Activity
You can do this through putExtra method.
You can use intents, which are messages sent between activities. In an intent you can put all sort of data, String, int, etc.
In your case, in Splash Screen(say SplashActivity), before going to next activity(say MainActivity), you need to store a String message this way :
Intent intent = new Intent(SplashActivity.this, MainActivity.class);
intent.putExtra("message", message);
startActivity(intent);
In MainActivity, in onCreate(), you can get the String message by retrieving a Bundle (which contains all the messages sent by the calling activity) and call getString() on it :
Bundle bundle = getIntent().getExtras();
String message = bundle.getString("message");
Then you can use message variable as url.:
Hope this helps !
Related
I have login page (activity) which is my first activity (landing page) of the app.
Only after user gives correct username and password, the app allow you go to other pages to work with.
Now my question is, now the user is at the fourth page and he is working on it, And he minimize the app and use other app like messaging etc..
so when he come back to click my app icon again, my app starts from the first landing page, which is the login page,
how can I make my app to resume from the fourth page?
Android 4.4.4, Kit Kat, Samsung
Regards,
Nay TK
Add this in android manifest of loginActivity,
android:launchMode="singleTask"
more on android:launchMode
An instruction on how the activity should be launched. There are four modes that work in conjunction with activity flags (FLAG_ACTIVITY_* constants) in Intent objects to determine what should happen when the activity is called upon to handle an intent. They are:
"standard"
"singleTop"
"singleTask"
"singleInstance"
The system creates the activity at the root of a new task and routes
the intent to it. However, if an instance of the activity already
exists, the system routes the intent to existing instance through a
call to its onNewIntent() method, rather than creating a new one.
go through official link for more detail
You can make your fourth activity as your launch activity.
In the Resume of your Activity, you check if the user is logged in. If not, you start your Login activity.
I have a flow in my application like this:
For new users:
Splash Screen --> Login Activity --> Home Activity
For already registered users:
Splash Screen --> Home Activity
Basically the Splash Screen has an if else to decide which activity to go to. Once a first time user logs in, his status is saved in a preference variable for the splash screen to decide next time not to open the login activity.
Now the situation is that. If a new user logs in and goes to the home activity, and then logs out. He is redirected to the Login screen which is pretty much what should happen. But, in case an existing user opens the app, he is shown the Splash screen and directly moved to the Home Activity. Now if the user logs out, he gets out of the app. This happens because the Login Activity does not have any instance created and thus finishing the Home Activity finishes the whole app. Logout actually finishes the Home Activity, naturally the last active activity should open up. Which is not happening.
What I want to do is that, I want to implement a logic which will check that the Login Activity is available or not. If its available then finish() will be called else the Login Activity will be called via intent.
Please tell me how to achieve this.
P.S: My app uses a custom theme with a customized action bar. If I call finish and Intent together or I use flags to clear existing activities then there is a weird transition effect which shows the black standard action bar for a split second thus creating a bad user experience.
Now if the user logs out, he gets out of the app. This happens because
the Login Activity does not have any instance created and thus
finishing the Home Activity finishes the whole app.
If i understood your question, why dont you just call the Login Activity manually after user click a logout button?
Its what i always did with apps that have flow like yours
when user login finish login activity and start home activity.
when user logout finish home activity and start login activity
You always can call Login Activity via intent. If the activity is available, android will show this activity. Else android will create new activity automatically.
Actually that's why we use intents to show activity instead of creating activityes manually. System catches this intents and does all dirty work.
EDIT:
Hmm, but wouldn't you have the transition problem anyways? (If you were already logged in, and then log out - using intent/finish() you will have the same black action bar issue no?)
Maybe consider following ( I actually did this in my app):
Merge Splash screen and Login into one activity and depending whether you are logged in - display the login fields or proceed to home screen. Then you have a out of box consistent stack of activities regardless of use cases and no mambo-jumbo with do I already have this or not.
I can't comment because of I lack 4 rep, so I'll post as answer here:
I think #Blaze Tama is right. You can also use FLAG_ACTIVITY_CLEAR_TOP on intent to avoid stack flow problems:
From docs:
If set, and the activity being launched is already running in the current task, then instead of launching a new instance of that activity, all of the other activities on top of it will be closed and this Intent will be delivered to the (now on top) old activity as a new Intent.
Always start Login activity and start Home activity right away if the user already logged in.
In the Splash Screen activity
Intent intent = new Intent(this, Login.class);
If (user already logged in)
{
intent.putextra("Logged in", true);
}
startActivity(intent);
In the Login activity
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Intent intent = getIntent();
if (intent != null)
{
if (intent.getBooleanExtra("Logged in", false))
{
startActivityForResult(new Intent(this, Home.class), requestCode);
}
}
else
{
// The existing code here
}
}
In Home activity send back a code to indicate if the user logged out or just BackPress. If BackPress finish this Login activity.
When user taps gallery button I want user to redirect to my application's activity which will ask the user to enter password and then redirect user back to gallery ..
I want to know which permissions should i use and which broadcast should i accept .
Well If you want to lock the gallery you can do it in encrypt Decrypt way...
You can use MediaStore to access the images and then encrypt using your application and when user Again want to access that you can allow him to show by decrypting ...
Read the following link
Can I create password protected folder in Android?
You would need to replace the gallery application entirely to do what you're proposing.
When a user taps the Gallery icon, it doesn't fire a broadcast. It sends a directed intent with the action set to MAIN.
Anything that anyone tells you for how to do this is going to be wrong. You cannot do it.
The closest you could get is to use the MediaStore in your own app to access the same images that the gallery accesses.
Start a thread from your app which should periodically monitor foreground app name which in this case should be the Gallery (I cant remember the exact name But you can find it out using below logic).
Then if it is Gallery, open up your activity by blocking it.
If password success close activity & background will be the Gellery or otherwise redirect to Home.
For monitor foreground app
try {
ActivityManager activityManager = (ActivityManager) getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> runningTasks = activityManager.getRunningTasks(1);
PackageManager pm = getApplicationContext().getPackageManager();
output1 = pm.getApplicationLabel(pm.getApplicationInfo(runningTasks.get(0).baseActivity.getPackageName(),PackageManager.GET_META_DATA)).toString();
String className = runningTasks.get(0).topActivity.getClassName();
if( className.contains("Gallery")) {
//better to create this object globally outside the thread.
Intent intentSettingLock = new Intent();
intentSettingLock.setClass(oContext,SettingsLockNew.class);
intentSettingLock.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
oContext.startActivity(intentSettingLock);
}
}
catch(Exception e) {
}
To redirect to home on invalid password
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
this.finish();
You can not perform this as you described because pressing the gallery app icon from the launcher the system fires an intent with action=MAIN and category=LAUNCHER for the specific application package.
Since you cannot name your application package as the gallery package name you cant filter this intent.
I have a problem in my android app, it having the log out functionality in setting screen.
When we Logout it opens the login screen. But when i press back button then it show the setting screen page, which is not required (as it takes me to inside the app without login). I am using the following code but it is not working. Because at the time of logout LoginActiviy is not exist.
Intent intent= new Intent(HomeSetting.this,LoginActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
Please suggest me some solution, that LoginActivity get call as a new Activity, and all activity in history will get destroyed.
You can set noHistory property of Activity in manifest file as true.So it will be removed from Activity satck,when it goes to background.
To avoid this, you should set flags as follows:
Intent intent= new Intent(getApplicationContext() , LoginActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
I can't find anything on this on google, nor here? But I am trying to create a notification and retrieve the value of an EditText field that has been set as a custom view for the notification
Is there anyway to retrieve this value? As notification's (as far as I'm aware) can just be set and/or updated.. but there must be some way!
That's not possible. The actual EditText view inside your notification is not even owned by your process - it's instantiated by the system using the RemoteViews object you are providing. The only way of communicating with it is by sending back predefined intents, for example via setOnClickPendingIntent. You cannot retrieve a content of EditText that way, though.
As a solution I'd recommend to display a dialog or activity with your EditText when user taps the notification, and handle their input there.
In your notification Intent
Intent notificationIntent = new Intent(this, FlightActivity.class);
Bundle bundle = new Bundle();
bundle.putString("whatever",YOUR_STRING_VALUE);
notificationIntent.putExtras(bundle);
When the application starts, you can get it using the intent
Is this what you want?