Develop Reference

My application icon doesn't appear when I debug or Run 'app' on android studio, what happened?

My application icon no longer appears on my android phone screen when I debug like it used to. I know this has something to do with the androidmanifest.xml file. I've looked up several solutions for me but those solutions resulted in my application being unable to even run in the first place.
What could be the problem here?
I have tried the solutions mentioned here:
Android Studio: App icon doesn't appear in the home screen or app list
Launcher icon missing in Android
This is my android manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="sg.edu.singaporetech.teamproject">
<uses-permission android:name="android.permission.INTERNET" /> <!-- allow usage of camera for Android -->
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/> <!-- to run foreground service for steps -->
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<application
android:name=".StepsNotification"
android:allowBackup="true"
android:icon="#drawable/exersize"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.Light.NoActionBar">
<activity android:name=".DispatchActivity">
<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" />
</intent-filter>
</activity>
<activity android:name=".profile.editProfile"
android:screenOrientation="portrait"
android:configChanges="orientation|keyboardHidden" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar"
android:screenOrientation="portrait"
android:configChanges="orientation|keyboardHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".registration.RegisterActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".home.HomeActivity">
<!--<intent-filter>-->
<!--<action android:name="android.intent.action.MAIN" />-->
<!--<category android:name="android.intent.category.LAUNCHER" />-->
<!--</intent-filter>-->
</activity>
<receiver android:name=".StepsBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
</intent-filter>
</receiver>
<service android:name=".StepsService"/>
</application>
</manifest>

I think the problem is in the line,
android:icon="#drawable/exersize"
In the application tag, app icon must he placed in the mipmap folder as it meant for the app icon only. Mipmap must have all scales of the icon.

Default Activity Not Found in android studio version 1.2.2

I am new to android application development and i am following the video tutorials of New Boston. My appication gave error in the emulator "application closed unexpectedly" but when i tried to run it again it gave Error : Default activity not found.
After spending hours of time on google and stack overflow i realised it is related to android manifest.
so this is my manifest file.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.shubhangkhattar.newboston" >
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".Splash"
android:label="#string/app_name" >
<intent-filter>
<action android:name="com.example.shubhangkhattar.newboston.SPLASH" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="com.example.shubhangkhattar.newboston.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Menu"
android:label="#string/app_name" >
<intent-filter>
<action android:name="com.example.shubhangkhattar.newboston.MENU" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
I have already tried invalidate catches/restart and sync project with gradle files.

Change
<action android:name="com.example.shubhangkhattar.newboston.SPLASH"/>
To
<action android:name="android.intent.action.MAIN"/>
Intents reference

Android - No Launcher activity found

When I launch my app with Eclipse, I get this error :
No Launcher activity found!
launch will only sync the application package on the device!
However, the AndroidManifest seems correct :
<application
android:name="com.myapp.MyApplication"
android:allowBackup="true"
android:largeHeap="true"
android:icon="#drawable/icon"
android:label="#string/name"
android:theme="#style/myTheme" >
<activity
android:name="com.myapp.OpeningActivity"
android:theme="#android:style/Theme.Holo.NoActionBar"
android:label="#string/name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
</intent-filter>
<meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
android:resource="#xml/myxml" />
</activity>
<receiver android:name="com.myapp.MyBootReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
<action android:name="com.parrot.intent.action.LAUNCH_NAP_APP" />
</intent-filter>
</receiver>
</application>
I can't see anything worst in this code.
Note that with AndroidStudio, this error not appears. So... is Eclipse the problem ?
Thank you for your help.

Eclipse showing No launcher Activity found

This is my android Manifest.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="uk.co.halfninja.wallpaper.parallax">
<uses-sdk android:minSdkVersion="7" />
<uses-feature android:name="android.software.live_wallpaper" />
<application
android:label="#string/app_name"
android:icon="#drawable/icon">
<service
android:label="#string/app_name"
android:name=".ParallaxWallpaper"
android:permission="android.permission.BIND_WALLPAPER">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data android:name="android.service.wallpaper" android:resource="#xml/wallpaper" />
</service>
<activity
android:label="#string/wallpaper_settings"
android:name=".ParallaxWallpaperSettings"
android:theme="#android:style/Theme.Black.NoTitleBar"
android:exported="true">
</activity>
</application>
</manifest>
Still Eclipse showing the result
ParallaxWallpaper] No Launcher activity found!
ParallaxWallpaper] The launch will only sync the application package on the device!
ParallaxWallpaper] Performing sync
ParallaxWallpaper] Automatic Target Mode: Unable to detect device compatibility. Please select a target device.
Please let me Know where am i doing the mistake, and what would be the solution...???

Move the intent-filter tag from service to activity

These lines should be in Activity tag
<application
android:label="#string/app_name"
android:icon="#drawable/icon">
<activity
android:label="#string/wallpaper_settings"
android:name=".ParallaxWallpaperSettings"
android:theme="#android:style/Theme.Black.NoTitleBar" android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:label="#string/app_name"
android:name=".ParallaxWallpaper"
android:permission="android.permission.BIND_WALLPAPER">
</service>
<meta-data android:name="android.service.wallpaper" android:resource="#xml/wallpaper" />
</application>

make activity as launcher you have made service as launcher. like that
<activity
android:label="#string/wallpaper_settings"
android:name=".ParallaxWallpaperSettings"
android:theme="#android:style/Theme.Black.NoTitleBar"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

Android app doesn't load up on the emulator

My app has no errors in it however when i come to run it on the emulator then the emulator runs but doesn't show my app and comes up with this
error message -
[2013-03-15 09:47:57 - Writees] No Launcher activity found!
[2013-03-15 09:47:57 - Writees] The launch will only sync the
application package on the device!
This is my manifest -
?xml version="1.0" encoding="utf-8"?>
android:allowBackup = "True">
<activity
android:name="com.example.writees.LoginActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<intent-filter>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</intent-filter>
</activity>
<!-- dashboard Activity -->
<activity
android:name="com.example.writees.DashboardActivity"
android:label="dashboard" >
</activity>
<!-- main Activity -->
<activity
android:name="com.example.writees.MainActivity"
android:label="main" >
</activity>
<!-- Register Activity -->
<activity
android:name="com.example.writees.RegisterActivity"
android:label="Register New Account" >
</activity>
<!-- Book Activity -->
<activity
android:name="com.example.writees.BookActivity"
android:label="book" >
</activity>
/>

No Launcher activity found!
You did not set any activity as a Launcher in AndroidManifest.xml
<activity android:name=".ExampleActivity" 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 have to make any one activity that you want to launch first as Launcher activity.
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.helloworld.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>
</application>