I've a React-Native app with the following code (here App.js, the app entry point) that manages deep link on Android.
Linking.getInitialURL().then((deepLinkUrl) => {
if (deepLinkUrl) {
manageDeepLink(deepLinkUrl);
} else {
Navigation.startSingleScreenApp('rootScreen');
}
});
The problem here is that getInitialURL is called every time I launch my app, from both deep link or normally, and everytime it contains deepLinkUrl parameter empty.
I've registered in AndroidManifest my intent as follows:
<application
android:name=".MainApplication"
android:allowBackup="true"
android:launchMode="singleTask"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:windowSoftInputMode="adjustResize">
<!-- deeplink -->
<intent-filter android:label="#string/app_name">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="myapp" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
UPDATE
I'm using react-native navigation to register screens, if this can e useful.
It seems it doesn't work if you register listener too soon in the app lifecycle (ex. directly in some .js file, so it's executed when app is loaded).
If you move it into componentDidMount() on the root component everything works fine.
componentDidMount() {
Linking.addEventListener('url', event => {
console.warn('URL', event.url)
})
Linking.getInitialURL().then(url => {
console.warn('INITIAL', url)
})
}
Because you added android:launchMode="singleTask" to AndroidManifest.xml. Please modify it to android:launchMode="singleTop", then your problem will be gone.
Related
I am on Android and I want to use DeepLink to open a specific screen using react navigation.
Here is my manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.samtbook">
<application
android:name=".MainApplication"
android:label="#string/app_name"
android:icon="#mipmap/ic_launcher"
android:roundIcon="#mipmap/ic_launcher_round"
android:allowBackup="false"
android:theme="#style/AppTheme"
android:supportsRtl="false"
android:usesCleartextTraffic="true"
>
<activity
android:launchMode="singleTask"
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
<data android:scheme="http" android:host="samtbook.me"/>
</intent-filter>
</activity>
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity"/>
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="API_KET"/> // HIDDEN
</application>
and here is the link I use:
http://samtbook.me/test/
and I registered my deepLink like this:
componentDidMount() {
Linking.addEventListener('url', this.handleOpenURL);
}
componentWillUnmount() {
Linking.removeEventListener('url', this.handleOpenURL);
}
handleOpenURL = (event) => {
this.navigate(event.url);
};
navigate = (url) => {
this.props.navigation.navigate('TestScreen');
};
The poblem is When the app is not running in the background(Means dead)
I click over the link and it opens the app but not navigate to intended screen
but when the app is running in background it navigates
Thanks in advance
Use react navigation deeplinking mentioned in doc:
https://reactnavigation.org/docs/en/deep-linking.html
Http scheme is detected as a web url just change your scheme to a custom scheme for example "myapp" and change your url to myapp://samtbook.me/test/ good luck!
I've followed the steps in the android documentation Here to implement linking in my application. I dont really need any fancy parameter passing, all I want is when the user clicks a link on the browser that my app opens. All I did was modify my AndroidManifest. Here is the relevant part
<application
android:name=".MainApplication"
android:allowBackup="true"
android:label="#string/app_name"
android:icon="#mipmap/ic_launcher"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:windowSoftInputMode="adjustResize"
android:launchMode="singleTask">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:label="filter_react_native">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="u2player" android:host="open.my.app" />
</intent-filter>
</activity>
I am using react-native-navigation and trying to browse from either the chrome browser or the native browser to any of u2player:// u2player://open.my.app u2player://open.my.app/ doesn't work. I have also binded the url event from the Linking module but nothing works. I restarted, uninstalled, etc.
Help appreciated
Try using branch. It solves most of the problem that you are facing and it also has a very clean documentation. Please go through and let me know if you have any issues
I have pasted the code of my Androidmanifest.xml,how does android decides which activity to launch when application starts ? In this case its the mainactivity. What changes to I need to make if I want to launch AnotherActivity when application launches?
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.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>
<activity
android:name="com.example.AnotherActivity"
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>
The MAIN element specifies that this is the "main" entry point to the application. The LAUNCHER element specifies that this activity should be listed in the system's application launcher (to allow users to launch this activity).
<activity
android:name="com.example.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>
Just remove the intent filter from the next activity!!
When the user selects your app icon from the Home screen, the system calls the onCreate() method for the Activity in your app that you've declared to be the "launcher" (or "main") activity. This is the activity that serves as the main entry point to your app's user interface.
You can define which activity to use as the main activity in the Android manifest file, AndroidManifest.xml, which is at the root of your project directory.
The main activity for your app must be declared in the manifest with an that includes the MAIN action and LAUNCHER category. For example:
<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>
Based on this, we can conclude that you currently have a faulty configuration. Only one activity can have the Intent filter for Main (so you should remove the <intent-filter> from your .MainActivity if you want to use AnotherActivity as you "Home" Activity).
<activity
android:name="com.example.AnotherActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="MainActivity" ></activity>
As stated in our conversation, you want to show a determinate action at launch, with is own functions and layout. The solution is to use one Activity which inflate Fragment1 or Fragment2, based on your condition.
Dealing with Fragment is very difficult, but when you will master them, you will have fun. There are few example on the net about Fragment, but i tell you this: read and practice is the only way you will learn something. Copy and paste from other source code / example will not help you. Follow this links:
link 1
link 2 with sample
link 3 for supporting tablets
Good luck!
I keep getting "ActivityNotFoundException: Unable to find explicit activity class ... " when using Eclipse's emulator to call the activity of another application from an application. Perhaps the problem maybe related to I am not able to download to/find both applications at the same time when I click on "Manage Applications" in Settings. This is the first project I need to call the activity of another application. But I am not sure the code is correct either. Please help me determine if there are errors in the code snippets I present below. It is hinted that I can set the action field of the intent to achieve the objective but have not found learning material for this. I learned about using the setComponent method in the calling app and to add android:export to the called activity's AndroidManifest.xml. Thanks in advance!
Calling app's relevant source code:
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.MyPackage", om.MyPackage.Activity1));
startActivity(intent);
Calling app's relevant AndroidManifest.xml :
<application android:icon="#drawable/icon" android:label="#string/app_name">
<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>
<activity android:name=".Activity1">
<intent-filter>
<action android:name="com.MyPackage.Activity1" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
Relevant code of AndroidManifest.xml of the activity of another application
<activity android:name=".Activity1" android:exported = "true">
<intent-filter>
<action android:name="com.MyPackage.Activity1" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
Firstly point out that you're trying to start Activity in Application2 from Activity in Application1
You have to give them separate namespaces
both applications now have com.MyPackage.* prefix
OR use names Activity1 and Activity2
So you will have
com.MyPackage1.Activity1
// and
com.MyPackage2.Activity1
Then you can use this code, to start Activity1 in MyPackage2 from MyPackage1.
// in file com.MyPackage1.Activity1
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.MyPackage2", "com.MyPackage2.Activity1"));
startActivity(intent);
And your AndroidManifest.xml files should look like this:
first
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name="com.MyPackage1.Activity1"
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>
second
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name="com.MyPackage2.Activity1"
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>
see related SO question:
How to start activity in another application?
I am confirming about creating activity.
My Manifest.xml is like this :
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".FirstActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".ThirdActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
You can see property action android:name= property is "android.intent.action.MAIN" and
category android:name= is "android.intent.category.LAUNCHER" for all activities.
When the application starts up, it calls FirstActivity.
Then calls useless Activity such as ThirdActivity or SecondActivity.
In this case, is my manifest.xml correct?
Or, do I need to set another property to Second and Third activity?
If so, what is that?
I wonder manifest.xml file is right for my case.
Please advise.
Try this config:
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".FirstActivity" android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity" android:label="#string/app_name">
<intent-filter>
</intent-filter>
</activity>
<activity android:name=".ThirdActivity" android:label="#string/app_name">
<intent-filter>
</intent-filter>
</activity>
Think of an Intent as message used to start an Activity to do something. So I can create an Intent to view a web page and an application with an Activity which knows how to view a web page - most likely the browser - can intercept his Intent as act on it.
You tell Android which Activities can act on which Intents using the <intent-filter> part of your Manifest.
The MAIN Intent is a special one. This is sent to an application when it is launched and basically it says "Go!" So the Activity which shoud be displayed first needs to intercept this by having a correctly defined <intent-filter>.
As you had all three Activities with MAIN in their filter they all responded to the request to start your application. So you should have that <intent-filter> only for FirstActivity.
One of the other problems with using
<category android:name="android.intent.category.LAUNCHER" /> for more than one activity is that the Phone's launcher menu will display more than one icon...
From the docs:
CATEGORY_LAUNCHER The activity can
be the initial activity of a task and
is listed in the top-level application
launcher.