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  1. Mohamed13

    I have error message in Build Output

    The error message saying "AAPT: error: 'matchmaker' is incompatible with attribute layout_constraintTop_toTopOf (attr) reference|enum [parent=0]. How to fix it? <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout...
  2. Mohamed13

    Help How to fix this error message

    Android manifest code <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.example.Second app"> <uses-sdk android:minSdkVersion="15" android:targetSdkVersion="26" />...
  3. Mohamed13

    How to fix error coding

    Android manifest. <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.secondapp" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="23"...
  4. Mohamed13

    How do you fix androidmanifest coding

    My code is <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.Second app"> <application android:allowBackup="true" android:icon="@Mipmap/ic_launcher" android:label="@String/app_name"...
  5. Mohamed13

    Why my app isn't appearing in emulator?

    As you can see there is app in emulator screen. What should I do? I click on run debug but that didn't work, it will show same result.
  6. Mohamed13

    I have few problems with android studio

    1, I am trying to put an image on my design but it doesn't show up. I put the code in and the code is... <ImageView android:layout_width="match_parent" android:layout_height="300dp" android:background="@drawable/blue_background" app:layout_constraintEnd_toEndOf="parent"...
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