error: No resource identifier found for attribute 'layout_alignStart'

Question

I really don't know the reason behind this. In this block of code.

    <ProgressBar
      android:id="@+id/progressBar"
      style="@android:style/Widget.Pbar"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_alignParentTop="true"
      android:layout_alignStart="@id/imgFrame"
      android:layout_gravity="center_vertical"
      android:layout_marginTop="15dp"
      android:indeterminate="true" />

The error is always on this part. It states that error: No resource identifier found for attribute 'layout_alignStart' in package 'android' .

This error sometimes disappear but then again appears. This was a big problem because i can't generate R.java because of the error on this part in res. So i tried commenting it out to be able to generate R.java. And then when i try to run the application, it will take too much time and then prompts an error encountered. This project is an existing source which I imported/ added new project from existing source.

@sftdev It will throw that, when you don't use `RelativeLayout`, Make sure that you parent layout is `RelativeLayout` — Pragnani, May 15 '13 at 07:26

score 1 · Answer 1 · answered Sep 20 '14 at 09:30

1

Please replace layout_alignStart with layout_alignLeft. They have the same effect on the view.

answered Sep 20 '14 at 09:30

Libera Me

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Not true: that'll mishandle RTL locales. – Ryan M Mar 23 '23 at 08:51

score 0 · Answer 2 · edited May 23 '17 at 10:28

0

Replace @+id for @id, see the differece here

Basically @+id is to generate a new entry at compile time to R.java file while @id is to reference an existing one. You are trying to align your item respect to another one that already exist.

android:layout_alignStart="@id/imgFrame"

edited May 23 '17 at 10:28

Community

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answered May 15 '13 at 07:22

AlexBcn

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yup, i know the difference between the two. I've just imported it and i've already noticed that one and already changed it. Still, nothing.. – sftdev May 15 '13 at 07:23

score 0 · Answer 3 · answered May 15 '13 at 07:25

0

layout_alignStart is defined only for RelativeLayout

answered May 15 '13 at 07:25

GVillani82

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score 0 · Answer 4 · answered Apr 17 '15 at 14:39

0

just cut the line layout_alignStart="" the error will gone

answered Apr 17 '15 at 14:39

usama

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error: No resource identifier found for attribute 'layout_alignStart'

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