YogaLayout | Use YogaKit to implement Xib in iOS | iOS library
kandi X-RAY | YogaLayout Summary
kandi X-RAY | YogaLayout Summary
Use YogaKit to implement Xib in iOS. 详细实现和思想请查看简书文章:用 YogaKit 实现 Xib.
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QUESTION
I am testing https://yogalayout.com/playground and have created that template:
...ANSWER
Answered 2020-Feb-08 at 20:32The default flexDirection
is column
in React Native. So, try setting it to row
in your container View
.
QUESTION
This is an app exercise, and I would appreciate some help and coding examples. I am trying to set the background colour from my SettingsActivity.java to my MainActivity.java. This would happen via a checkbox, that I click and triggers the change.
I can access MainActivity via intent, while the checkbox is clicked. However, if I try to set the colour of the MainActivity background Java throws a null pointer error, cause the value is null.
Here is the logcat:
...ANSWER
Answered 2018-Jan-05 at 16:40I'm guessing the ConstraintLayout
with the ID mainAcBackground
is in activity_main.xml
and not in activity_settings.xml
. If that's the case,
findViewById(R.id.mainAcBackground);
in SettingsActivity.java
will return null and hence your NullPointerException
is raised.
What you want to do is store the value in SharedPreference
when your checkbox item changes and use that value in MainActivity.java
to load the correct background color. You will have to use OnSharedPreferenceChangeListener
in your MainActivity.java
to ensure that when your activity is resumed, you can load the correct background.
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