【HarmonyOS】【FAQ】鸿蒙问题合集4

 【问题描述1】
鸿蒙怎么实现跳转系统浏览器？浏览百度网页
【解决方案】
参考资料
【Harmony OS】【JAVA UI】abilitySlice和ability跳转方式

【Harmony OS】【ARK UI】ets使用startAbility或startAbilityForResult方式调起Ability

java版本

    Intent intent= new Intent();         intent.setAction("android.intent.action.VIEW");         intent.setUri(Uri.parse("https://www.baidu.com/"));         startAbility(intent);

ets或者js 版本

import featureAbility from '@ohos.ability.featureAbility';@[email protected] Index {  public onclick(){    var str = {      "want": {        "deviceId": "",        "bundleName": "",        "abilityName": "",        "uri": "https://www.baidu.com/",        "action":"android.intent.action.VIEW",      },      "abilityStartSetting": {}    };    featureAbility.startAbility(str)      .then((data) => {        console.info('Operation successful. Data: ' + JSON.stringify(data))      }).catch((error) => {      console.error('Operation failed. Cause: ' + JSON.stringify(error));    })  }  build() {    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {      Text('Hello World')        .fontSize(50)        .fontWeight(FontWeight.Bold)      .onClick(this.onclick.bind(this))    }    .width('100%')    .height('100%')  }}

 

【问题描述2】
鸿蒙怎么实现，调用TextField.getLineCount()获取行数闪退
【解决方案】

 

参考如下链接

https://developer.harmonyos.com/cn/docs/documentation/doc-references/text-0000001054838676#ZH-CN_TOPIC_0000001054838676__getLineCount--

此api从Api Version 7 开始支持

 

【问题描述3】
鸿蒙怎么使用getLineCount()
【解决方案】

代码如下

textField.setBindStateChangedListener(new Component.BindStateChangedListener() {            @Override            public void onComponentBoundToWindow(Component component) {                int count1=textField.getLineCount();                Text mytext=findComponentById(ResourceTable.Id_mytext);                mytext.setText("#####行数"+count1);            }            @Override            public void onComponentUnboundFromWindow(Component component) {            }        });

 

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