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Android

Posted by Ibrahim Adeosun
Ibrahim Adeosun
2,973 Points

How do I set a guideline at 15% of the screen on Android Studio?

So I am working on a little project in android studio and I am using a constraintlayout. I want to place a guidline but the only option that will help me with placement that I have seen uses dp and I don't know the exact dp point that will give me 15%. Is there a way for me to even do this?

1 Answer

Fatemah Tavakoli
Fatemah Tavakoli
13,797 Points
Fatemah Tavakoli
Fatemah Tavakoli
13,797 Points

Hi Ibrahim,

If I understood correctly, you are trying to change the guideline percentage in constraintLayout programmatically.
you can use the ConstraintLayout.LayoutParams.

We try to get the specific parameter form constraintLayout and modify it. 

Guideline guideLine = (Guideline) findViewById(R.id.your_guideline);
ConstraintLayout.LayoutParams params = (ConstraintLayout.LayoutParams) guideLine.getLayoutParams();
params.guidePercent = 0.15f; // 15% // range: 0 <-> 1
guideLine.setLayoutParams(params);

hope it helps :)

Ibrahim Adeosun
Ibrahim Adeosun
2,973 Points

I tried the app:layout_constaruntGuide_percent and it did exactly what I was looking for. But I really appreciate your answer so much! 

 <androidx.constraintlayout.widget.Guideline
            android:id="@+id/guideline4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_percent="0.75" />