Develop Reference

INSTALL_PARSE_FAILED_MANIFEST_MALFORMED on new project

I created a new project in android studio, but i can't run it:
Installation did not succeed.
The application could not be installed: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED
I haven't changed anything yet. Just want to run it once my device first.
This is my Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.unserkalender">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Activity class does not exist in android studio

I keep getting this error when I try to run my android studio. I tried to copy, paste my previous project bit by bit. After I finished it I got this error. I'm really stuck on this one.
Thanks in advance :D
This is my Activity manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.iussystem">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".TermsOfService"></activity>
<activity android:name=".ForgotPassword" />
<activity android:name=".Registracija" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

If you are saying your app is in com/example/iusystem/MainActivity.java, isnt that a typo?
Either change your package:
package="com.example.iussystem"
to
package="com.example.iusystem"
Or move your activity the other way.

Remove MainActivity created by Android Studio

How can edit the manifest so the MainActivity is removed?
I've been following some tutorials to learn to create android apps and I've got stuck in the Activity subject.
When I create a project the Software gives me an deafult activity called MainActivity. I've deleted it so I could name my class as I wish.
However, even after deleting the files the activity still presents on the Manifest. I've tried to play around, deleting some words, but with no success.
This is the current manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="androidedx.example.activitylifecycle">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Activity1"></activity>
<activity android:name=".Activity2" />
<activity android:name=".MainActivity">-------<<<<<<0!!!!!!!!!!!!!
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
It has this row of content that the android studio warns me about, that I'm poiting with -------<<<<<<0!!!!!!!!!!!!!.
I recall my question: How can edit the manifest so the MainActivity is removed?

Remove the MainActivity Java file and Manifest Declaration and activity1 set as a LAUNCHER Activity
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="androidedx.example.activitylifecycle">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Activity1">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activity2" />
</application>
</manifest>

You can create manifest like this if you want to use other activity
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="androidedx.example.activitylifecycle">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Activity1">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activity2" />
</application>
</manifest>
This below code make activity as Main and first launched :
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

android:allowBackup="true" error on "true"

I have one problem my code has android:allowBackup="true" error on "true"
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dsadas.bottombardmo">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I used calculate distance project but there are many projects, when I create a project then error generate of in manifest file.
<application android:allowBackup="true">
Please tell me answer

That's because in some of your libraries, there's at least one that uses allowBackup set explicitly to false. You can use tools:replace in your manifest.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dsadas.bottombardmo"
xmlns:tools="http://schemas.android.com/tools">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:replace="allowBackup">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Android Studio Apps Launcher missing but installed

I have read some other question about this problem and after trying,editing and inspecting my manifest , my Apps Launcher still doesnt appear
here is my manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.common.myappname">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MerchantActivity"
android:label="#string/title_activity_merchant"
android:theme="#style/AppTheme.NoActionBar">
</activity>
<activity
android:name=".SlidingTabsActivity"
android:label="#string/title_activity_voucher"
android:theme="#style/AppTheme.NoActionBar">
</activity>
</application>
</manifest>
Thanks, i appreciate any help offered.