Question

I’m trying out Android programming for the first time since I just finished reading the Head First Java book. I’m going through the Notepad Tutorial When I import the files for the project, my R class is not generated. I assume that is because of the errors I’m getting in one of my xml files. I’m using API 7

The error goes as follows:
Error: String types not allowed (at ‘layout_height’ with value ‘match_parent’). note_edit.xml /Notepadv2/res/layout line 3 Android AAPT Problem

Here’s my xml code:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView android:layout_width="wrap_content"
            android:layout_height="wrap_content" 
            android:text="@string/title" />
        <EditText android:id="@+id/title" 
          android:layout_width="wrap_content"
            android:layout_height="wrap_content" 
            android:layout_weight="1"/>
    </LinearLayout>

    <TextView android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:text="@string/body" />
    <EditText android:id="@+id/body" android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:scrollbars="vertical" />

    <Button android:id="@+id/confirm" 
      android:text="@string/confirm"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

Answer 1

What version are you using? 2.1 will not support the match_parent And, also If your project’s res folder contains any errors means, your R.java file will not generate untill you will clear the errors in your xml files.

So, just Change the height as fill_parent instead of match_parent or just change your project target as 2.2

After, done these things. Just clean your project and Run. Hope this helps you.