Tag: huawei-developers

I am creating a custom component in HarmonyOS using Java SDK, Where I have to perform some task after some delay with Component instance. In Android, we have postDelayed(Runnable action, long delayMillis) method in View class. So we can achieve above requirement as follow but, In HMOS java SDK, I seen there i…

I want to add an image inside the tab and I have Image Resource Id but tab.setIconElement(Element) takes element. currently, I am trying like this How can I add an image inside the tab or create its element with Image Resource Id only? Or is there any other way to do it? Answer First you have to decode the Im…

There are many arguments in my code which can take the value null. It would be helpful if there is a @Nullable and @NonNull annotation like the ones offered in Android via Annotation. Is there an alternative available in Harmony OS? Answer You can use org.jetbrains.annotations.Nullable & org.jetbrains.ann…

I am working on a HarmonyOS project in that I wanted to set the background color of the component. In Android we have a function setBackgroundColor() in the View class, this can be done as shown below. How can I set background color to a component in HarmonyOS? Answer First you have to build an Element using …

Can anyone tell px:fp ratio or code to convert fp to px. I am building a HarmonyOS application and I want to set the width of a component to 20fp but setWidth​(int width) takes width in px. Answer HarmonyOS provides the AttrHelper tool class to implement conversion between fp and px. AttrHelper.fp2px() For mo…