启动ServiceAbility
启动ServiceAbility
ServiceAbility的启动与其他Ability并无区别,应用开发者可以在PageAbility中通过featureAbility的startAbility接口拉起ServiceAbility,在ServiceAbility中通过particleAbility的startAbility接口拉起ServiceAbility。ServiceAbility的启动规则详见组件启动规则章节。
如下示例展示了在PageAbility中通过startAbility启动bundleName为"com.example.myapplication",abilityName为"ServiceAbility"的ServiceAbility的方法。启动FA模型的ServiceAbility时,需要在abilityName前拼接bundleName字符串。
import featureAbility from '@ohos.ability.featureAbility'
async function startServiceAbility() {
try {
console.info('Begin to start ability')
let param = {
want: {
bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.ServiceAbility"
}
}
await featureAbility.startAbility(param)
console.info(`Start ability succeed`)
} catch (error) {
console.error('Start ability failed with ' + error)
}
}
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执行上述代码后,Ability将通过startAbility()方法来启动ServiceAbility。
如果ServiceAbility尚未运行,则系统会先调用onStart()来初始化ServiceAbility,再回调Service的onCommand()方法来启动ServiceAbility。
如果ServiceAbility正在运行,则系统会直接回调ServiceAbility的onCommand()方法来启动ServiceAbility。