当前位置：网站首页>Arkui FAQ summary [series 3]

Arkui FAQ summary [series 3]

2022-07-17 22:48:00 【InfoQ】

After writing it yesterday, everyone liked it , see , The third issue is coming .

problem 1.

Can wechat develop Hongmeng version ？eTS？

Look at this , Namely eTS Written

Hongmeng instant messaging software

problem 2.

eTS When can we debug the remote simulator ？

It's ok now ,P50 Namely , Remember to choose when choosing API8, But remember HarmonyOS Development

problem 3.

OpenHarmony arkui（ets) image How to load network pictures

You can look at it ：

@Entry
@Component
struct ImageTest {
 build() {
 Column({}) {

 Image(&quot;https://pic.netbian.com/uploads/allimg/190401/201711-155412103118a5.jpg&quot;)
 }
 .width('100%')
 .height('100%')
 .padding(10)
 }
}

Remember to add permissions

problem 4. How to realize picture click jump ?

How to click the image to jump to another interface, and then the image title text and design the return button can be written in the interface ?

answer ：

Different development models , The code is different , ArkUI Inside JS, eTS Development UI Jumping is different ,

Here I give you eTS One way ,

You can read this article .

well , Have you learned ？

problem 5.

Use Web Component times WebController and Web Module undefined

supposedly Web Modules are built-in modules , Should be able to use directly , Is it true that I haven't set it anywhere ？ I think that's what the document uses , Report an error here ...

answer , Use a remote simulator , Not the previewer , Here again ,http The request should also use the simulator , Not the previewer .

problem 6. About recent editor updates

My suggestion , It's quite good to merge two into one this time , To prevent problems , You can consider uninstalling it and installing it completely , Otherwise, there will be all kinds of questions , Now? HarmonyOS Of SDK The highest version is 8,OpenHarmonyOS Of API The highest version is 9, It's gone Java Support for . The high version of the api They only support js and ets The way of the .

problem 7. Hongmeng ArkUI Can be obtained USB Mouth data ？

The veneer passes cat You can see the data , At present, we need to pass ArkUI Get the data

import usb from &quot;@ohos.usb&quot;;

problem 8.

eTs call prompt Pop up interface previewLog Tips showToast Undefined

Import '@system.prompt';

Report errors ：

[Engine Log] [DUMP] TypeError: cannot read property 'showToast' of undefined

perform .

Image($r('app.media.search'))
 .width('7%').height('80%')
 .constraintSize({ maxWidth: 25 })
 .objectFit(ImageFit.Contain)
 .onClick(() => {
 this.showToast()
 })

answer ： Previewer currently does not support showToast, You can pop it up with a remote simulator .

summary ： Many of them are not supported by previewers , You can use the remote simulator , Now it takes two hours to connect , fairish .

problem 9.Ark UI Draw a circle , Failed to add gradient , Round to square

Draw circles by drawing components , At the same time, I want to add gradient colors , The code is as follows , After adding a gradient, the shape becomes square , Please ask everyone how to deal with ：

 Circle().width(50).height(50).fill('none').linearGradient({
 angle: 90,
 direction: GradientDirection.Left,
 colors: [[0xAEE1E1, 0.0], [0xD3E0DC, 0.3], [0xFCD1D1, 1.0]]
 })

You can cut it , This kind of treatment

.clip(new Circle({width: 50, height: 50}))

Circle().width(50).height(50)
 .fill('none')
 .linearGradient({
 angle: 90,
 direction: GradientDirection.Left,
 colors: [[0xAEE1E1, 0.0], [0xD3E0DC, 0.3], [0xFCD1D1, 1.0]]
 })
 .clip(new Circle({width: 50, height: 50}))

原网站

版权声明
本文为[InfoQ]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/198/202207150820455495.html