I am new to Android development...
I have an application which uses a library to upload data to a website. I want to make additions to the application to be able to read NFC tags.
I started out creating a small, separate application to get the hang of NFC. That app works fine. Now, I need to bring in some of that code into this other application which depends on the aforementioned library.
The problem is, UNLESS I add an application node to the AndroidManifest.xml in the LIBRARY specifying the NFC intents, the intents do not fire.
[Snippet from library manifest mentioned above]
<application
android:supportsRtl="true"
android:allowBackup="true">
<activity
android:name=".MainActivity"
android:label="My App..."
android:supportsRtl="true">
<intent-filter>
<action android:name="android.nfc.action.TAG_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.TECH_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
[The main application contains this application node in its manifest]
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.microsoft.azure.storage.samples.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.TECH_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.TAG_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<meta-data
android:name="android.nfc.action.TECH_DISCOVERED"
android:resource="#xml/nfc_tech_filter" />
</activity>
</application>
Now comes the problem.... when a tag is detected, android tries to launch the activity from the library manifest file. Since that activity doesn't exist, I get a ClassNotFoundException. I tried specifying MainActivity class from the application for the android:name of the application node in the LIBRARY manifest, but:
I can't compile the code.
It would be extremely poor practice even if that worked...
How do I get the NFC intents to fire without having to add intent-filter nodes in the library manifest?
Thank you!
Related
I've implemented deep linking in my android application, and so far it is working fine when I type URL in the address bar in Opera and MozilaFirefox but somehow it's not working in google chrome and Samsung default browser.
As most people use google chrome as a default browser, so I want to know if there is any way to fix this issue?
below is my manifest code
<activity
android:name=".IntroActivity"
android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
android:screenOrientation="portrait"
android:launchMode="singleTop"
android:windowSoftInputMode="stateHidden|adjustPan">
<!-- android:windowSoftInputMode="stateHidden|adjustResize" -->
<!-- android:windowSoftInputMode="stateHidden|adjustPan" -->
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:scheme="myapplication" />
</intent-filter>
</activity>
I am rather new to Android Studio and needed help as my app couldn't launch in the emulator despite following all the solutions I can find based on others' experiences.
I have 2 activities currently — Main and Login. I will post the AndroidManifest.xml below. Thank you all for the help and time in advanced!! (I also have this message in my event log: Can't bind to local 8700 for debugger)
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".LoginActivity"
android:label="#string/title_activity_login">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<data
android:host="ID.firebaseapp.com"
android:scheme="https" />
<category android:name="android.intent.category.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity">
</activity>
</application>
Solution:
Try this below code:
<activity
android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="ID.firebaseapp.com"
android:scheme="https" />
</intent-filter>
</activity>
<activity android:name=".LoginActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Try it ... Hope it helps.
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".LoginActivity"
android:label="#string/title_activity_login">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.MAIN" />
<data
android:host="ID.firebaseapp.com"
android:scheme="https" />
<!-- <category android:name="android.intent.category.MAIN" /> -->
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity">
</activity>
</application>
That maybe help you. :)
I have upgraded my Android studio.
I think there is something different from the previous version
When I finished writing the code and compile then run. I look something different like this:
Whether it's something new or I destructive my android studio settings
May be you create multiple intent-filter in android AndroidManifest.xml.
this is happening because you have posted below code in three different activities in AndroidManifest.xml file.
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
the mistake you have done is like below in AndroidManifest.xml file:
<activity
android:name=".SplashActivity"
android:launchMode="singleTop"
android:screenOrientation="sensorPortrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".HomeActivity"
android:launchMode="singleTop"
android:screenOrientation="sensorPortrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:screenOrientation="sensorPortrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
I have this code in my manifest which allows me to set different activities in my application as the launcher. Is there a way that I can implement a button so that on button click it allows me to change the default launcher? For example, when I set the default launcher as settings activity, home activity can't be set as the default. I want the option to change it.
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".SettingsActivity"
android:label="#string/title_activity_settings" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".HomeActivity"
android:label="#string/app_name"
android:launchMode="singleTask"
android:stateNotNeeded="true" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
You can use PackageManager to disable/enable each of your app components but perhaps it would be simpler to stick to one entry point in your app (like StartActivity with no UI (i.e. themed Theme.NoDisplay) which would then call startActivity() on the right one depending on user config.
I can't find any problem but it keep giving me the error "No Launcher activity found!" and "The launch will only sync the application package on the device!"
can anyone solve this problem???
This is my Maniest
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.saikoro.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.saikoro.StartUp"
android:label="#string/app_name" >
<intent-filter>
<action android:name="com.example.saikoro.StartUp" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
The <activity> element of the activity you want to launch through the icon on the app list must contain both of the following parts of the intent-filter:
<intent-filter>
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.intent.action.MAIN" />
</intent-filter>
Your current manifest has an activity with category LAUNCHER and action MAIN, but in different activities. The one with the icon in the app list must have them both.
Change
<action android:name="com.example.saikoro.StartUp" />
with
<action android:name="android.intent.action.MAIN" />