标题

由于js是性能孱弱的单线程语言，只要在渲染中执行了一些其他操作，会中断渲染，导致页面卡死，卡顿，吐司不消失等问题。在安卓端可以调用java线程池，把耗时操作写入线程池里面，优化性能。

实现

使用native.js,直接贴出代码

 class JavaExecutorPool {
    constructor() {
        // #ifdef APP-PLUS
        const ScheduledThreadPoolExecutor = plus.android.importClass("java.util.concurrent.ScheduledThreadPoolExecutor")
        this.executor = new ScheduledThreadPoolExecutor(8)
        this.reusableRunnable = this.createReusableRunnable();
        this.block = null;
        // #endif
    }
     createReusableRunnable() {
         // #ifdef APP-PLUS
         let that = this;
         return plus.android.implements("java.lang.Runnable", {
             // 用于存储动态逻辑
             run: function () {
                 if (that.block) {
                     console.log("JavaExecutorPool 执行动态逻辑")
                     that.block(); // 执行动态逻辑
                     that.block = null; // 执行完后清除逻辑
                 }
             }
         });
         // #endif
     }

     execute(block) {
         // #ifdef APP-PLUS
         console.log("JavaExecutorPool 执行逻辑")
         this.block = block; // 动态注入逻辑
         this.executor.execute(this.reusableRunnable);
         // #endif
     }

    schedule(block, delay) {
        // #ifdef APP-PLUS
        if (delay <= 0){
            this.execute(block)
            return
        }
        setTimeout(() => {
            this.execute(block)
        }, delay)
        // #endif
    }

    shutdown() {
        // #ifdef APP-PLUS
        this.executor.shutdown()
        // #endif
    }
}
export default JavaExecutorPool;
const javaExecutorPool = new JavaExecutorPool()

使用示例

// 在其他文件中
import javaExecutorPool from './JavaExecutorPool';

javaExecutorPool.execute(() => {
    console.log("复用单例实例");
});