android——如何優雅的將刷新工作交給主線程

在很多異步操作中，等結果返回后，需要刷新UI。而我們知道UI刷新必須是在主線程中完成。雖然方法很多，但我這里只講其中一種。

在BaseApplication中記錄主線程id

package com.songheng.eastfirst;

import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;

import com.songheng.eastfirst.business.applog.manager.AppLogManager;
import com.songheng.eastfirst.service.StatisticalService;
import com.songheng.eastfirst.utils.UIUtils;

public class BaseApplication {
    private static Context mContext;// Context對象
    private static Handler mHandler;// Handler對象
    private static Thread mMainThread;// Thread對象
    private static int mMainThreadId;// 主線程Id

       public static Application getApplication() {
        return application;
    }

    public static void setApplication(Application app) {
        application = app;
    }

    static Application application;
    public static Context getContext() {
        return mContext;
    }

    public static void setContext(Context context) {
        mContext = context;
    }

    public static Handler getHandler() {
        return mHandler;
    }

    public static void setHandler(Handler mHandler) {
        BaseApplication.mHandler = mHandler;
    }

    public static Thread getMainThread() {
        return mMainThread;
    }

    public static void setMainThread(Thread mMainThread) {
        BaseApplication.mMainThread = mMainThread;
    }

    public static int getMainThreadId() {
        return mMainThreadId;
    }

    public static void setMainThreadId(int mMainThreadId) {
        BaseApplication.mMainThreadId = mMainThreadId;
    }
  
   
}

Uitils工具類

public class UIUtils {

    public static int getMainThreadId() {
        return BaseApplication.getMainThreadId();
    }
    


    public static Handler getHandler() {
        return BaseApplication.getHandler();
    }
    
   // 判斷是否是主線的方法
    public static boolean isRunInMainThread() {
        return getMainThreadId() == android.os.Process.myTid();
    }
    
        // 保證當前的UI操作在主線程里面運行
    public static void runInMainThread(Runnable runnable) {
        if (isRunInMainThread()) {
            // 如果現在就是在珠現場中，就直接運行run方法
            runnable.run();
        } else {
            // 否則將其傳到主線程中運行
            getHandler().post(runnable);
        }
    }

}