how to solve layout activity_main not found?

Question

C:\Users\acer\AndroidStudioProjects\MyApplication\app\src\main\res\layout\activity_main.xml
Error:error: attribute 'com.example.acer.myapplication:layout_constraintBottom_toBottomOf' not found.
Error:error: attribute 'com.example.acer.myapplication:layout_constraintLeft_toLeftOf' not found.
Error:error: attribute 'com.example.acer.myapplication:layout_constraintRight_toRightOf' not found.
Error:error: attribute 'com.example.acer.myapplication:layout_constraintTop_toTopOf' not found.
Error:attribute 'com.example.acer.myapplication:layout_constraintBottom_toBottomOf' not found.
Error:attribute 'com.example.acer.myapplication:layout_constraintLeft_toLeftOf' not found.
Error:attribute 'com.example.acer.myapplication:layout_constraintRight_toRightOf' not found.
Error:attribute 'com.example.acer.myapplication:layout_constraintTop_toTopOf' not found.
Error:failed linking file resources.
Error:java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details

Post your layout code for the main activity this is where the problem is occuring — beastlyCoder, Feb 24 '18 at 17:53
Can you post the code for your main activity and that activites xml? — beastlyCoder, Feb 24 '18 at 17:57
Possible duplicate of [Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details](https://stackoverflow.com/questions/46988102/errorcom-android-tools-aapt2-aapt2exception-aapt2-error-check-logs-for-detail) — Bentaye, Feb 24 '18 at 18:51
android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.acer.myapplication.MainActivity"> — Farid, Feb 25 '18 at 12:08

score 2 · Answer 1 · answered Feb 24 '18 at 17:57

2

Ensure you have the maven.google.com repository declared in your module-level build.gradle file:

repositories {
    maven {
        url 'https://maven.google.com'
    }
}

Add the library as a dependency in the same build.gradle file:

dependencies {
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
}

answered Feb 24 '18 at 17:57

Navneet Krishna

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can you please explaine – Farid Feb 24 '18 at 18:06
1

Open your module level build.gradle and check if dependency for constraint layout is added – Navneet Krishna Feb 25 '18 at 03:13
Just as ヅ fix said, you're missing a dependency on the constraint layout. Edit your app/build.gradle to contain these lines. – Izabela Orlowska Feb 28 '18 at 10:55

how to solve layout activity_main not found?

1 Answers1