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HarmonyOS/OpenHarmony(Stage模型)卡片开发应用上下文Context使用场景二
鸿蒙时代
发布于 2023-8-28 10:20
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3.创建其他应用或其他Module的Context
基类Context提供创建其他应用或其他Module的Context的方法为createModuleContext(moduleName:string),创建其他应用或者其他Module的Context,从而通过该Context获取相应的资源信息(例如获取其他Module的获取应用开发路径信息)。
调用createModuleContext(moduleName:string)方法,获取本应用中其他Module的Context。获取到其他Module的Context之后,即可获取到相应Module的资源信息。
import UIAbility from '@ohos.app.ability.UIAbility';
export default class EntryAbility extends UIAbility {
onCreate(want, launchParam) {
let moduleName2 = "module1";
let context2 = this.context.createModuleContext(moduleName2);
// ...
}
}
4.订阅进程内Ability生命周期变化
在应用内的DFX统计场景,如需要统计对应页面停留时间和访问频率等信息,可以使用订阅进程内Ability生命周期变化功能。
在进程内Ability生命周期变化时,如创建、可见/不可见、获焦/失焦、销毁等,会触发进入相应的回调,其中返回的此次注册监听生命周期的ID(每次注册该ID会自增+1,当超过监听上限数量2^63-1时,返回-1),以在UIAbilityContext中使用为例进行说明。
import UIAbility from '@ohos.app.ability.UIAbility';
import Window from '@ohos.window';
const TAG: string = "[Example].[Entry].[EntryAbility]";
export default class EntryAbility extends UIAbility {
lifecycleId: number;
onCreate(want, launchParam) {
let abilityLifecycleCallback = {
onAbilityCreate(ability) {
console.info(TAG, "onAbilityCreate ability:" + JSON.stringify(ability));
},
onWindowStageCreate(ability, windowStage) {
console.info(TAG, "onWindowStageCreate ability:" + JSON.stringify(ability));
console.info(TAG, "onWindowStageCreate windowStage:" + JSON.stringify(windowStage));
},
onWindowStageActive(ability, windowStage) {
console.info(TAG, "onWindowStageActive ability:" + JSON.stringify(ability));
console.info(TAG, "onWindowStageActive windowStage:" + JSON.stringify(windowStage));
},
onWindowStageInactive(ability, windowStage) {
console.info(TAG, "onWindowStageInactive ability:" + JSON.stringify(ability));
console.info(TAG, "onWindowStageInactive windowStage:" + JSON.stringify(windowStage));
},
onWindowStageDestroy(ability, windowStage) {
console.info(TAG, "onWindowStageDestroy ability:" + JSON.stringify(ability));
console.info(TAG, "onWindowStageDestroy windowStage:" + JSON.stringify(windowStage));
},
onAbilityDestroy(ability) {
console.info(TAG, "onAbilityDestroy ability:" + JSON.stringify(ability));
},
onAbilityForeground(ability) {
console.info(TAG, "onAbilityForeground ability:" + JSON.stringify(ability));
},
onAbilityBackground(ability) {
console.info(TAG, "onAbilityBackground ability:" + JSON.stringify(ability));
},
onAbilityContinue(ability) {
console.info(TAG, "onAbilityContinue ability:" + JSON.stringify(ability));
}
}
// 1. 通过context属性获取applicationContext
let applicationContext = this.context.getApplicationContext();
// 2. 通过applicationContext注册监听应用内生命周期
this.lifecycleId = applicationContext.on("abilityLifecycle", abilityLifecycleCallback);
console.info(TAG, "register callback number: " + JSON.stringify(this.lifecycleId));
}
onDestroy() {
let applicationContext = this.context.getApplicationContext();
applicationContext.off("abilityLifecycle", this.lifecycleId, (error, data) => {
console.info(TAG, "unregister callback success, err: " + JSON.stringify(error));
});
}
}
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HarmonyOSOpenHarmony(Stage模型)卡片开发.docx 22.38K 4次下载
已于2023-8-28 14:15:55修改
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