项目链接

一. 项目整体框架

二. 技术实现

1. 基类

1.1 BaseActivity

监听网络

• 定义在Baseactivity

    /**
     * 无网状态—>有网状态 的自动重连操作，子类可重写该方法 
     */
    open fun doReConnected() {
        // NetworkChangeReceiver进行监听
        LiveEventBus.get("isConnected", Boolean::class.java).observe(this) {
            if (it) startHttp()
        }
    }

• 设置一个网络状态监听器，用于监测网络连接变化

class NetworkChangeReceiver : BroadcastReceiver() {
    /**
     * 缓存上一次的网络状态
     */
    private var hasNetwork = mmkv.decodeBool(Constant.HAS_NETWORK_KEY, true)
    override fun onReceive(context: Context, intent: Intent) {
        val isConnected = NetWorkUtil.isNetworkConnected(context)
        if (isConnected) {
            if (!hasNetwork) {
                LiveEventBus.get("isConnected").post(isConnected)
            }
        } else {
            //同时开启WIFI和数据的时候，关闭WIFI可能会造成短时间断网，所以这里再判断一次
            if (!NetWorkUtil.isNetworkConnected(context)) {
                LiveEventBus.get("isConnected").post(isConnected)
            }
        }
        hasNetwork = isConnected
    }
}

• 检查网络连接工具类

        fun isNetworkConnected(context: Context): Boolean {
            //获取系统的连接服务（ConnectivityManager）
            val manager =
                context.applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
            val info = manager.activeNetworkInfo
            return !(null == info || !info.isConnected)
        }

设置Topbar

    //设置顶部toolbar相应样式
    // @RequiresApi用于在 Android 开发中指示某个方法、类或字段需要的最低 API 级别
    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    open fun setTop(
        title: String, subTitle: Any? = null, isBack: (() -> Unit)? = {
            toolbar_left_image_back?.setImageDrawable(
                ContextCompat.getDrawable(this, R.drawable.write_back)
            )
            toolbar_left_image_back?.setOnClickListener { onBackPressed() }
        }
    ) {
        toolbar_title?.text = title
        toolbar_title?.isSelected = true
        //小窗模式不计算状态栏的高度
        if (!DensityUtil.isSmallWindow(this)) {
            val layoutParams = toolbar?.layoutParams
            layoutParams?.height =
                getStatusBarHeight(this) + DensityUtil.dip2px(this, Constant.TOOLBAR_HEIGHT)
            toolbar?.layoutParams = layoutParams
        }
        //默认显示返回按钮
        //在 Kotlin 中，函数类型可以用 invoke() 方法来调用
        isBack?.invoke()
        //根据subtitle的数据类型来显示图片或文字
        when (subTitle) {
            is String -> {
                toolbar_subtitle_image?.visibility = View.GONE
                toolbar_subtitle?.visibility = View.VISIBLE
                toolbar_subtitle?.text = subTitle
            }
            is Int -> {
                toolbar_subtitle?.visibility = View.GONE
                toolbar_subtitle_image?.visibility = View.VISIBLE
                toolbar_subtitle_image?.setImageResource(subTitle)
            }
            else -> {
                toolbar_subtitle?.visibility = View.GONE
                toolbar_subtitle_image?.visibility = View.GONE
            }
        }
    }

1.2 BaseApplication

/**
 * 用于管理应用的全局状态和初始化一些第三方库
 */
class BaseApplication : Application() {

    companion object {
        var TAG = javaClass.simpleName

        // 用户信息
        var userInfo: UserInfoBody? = null
        lateinit var instance: Application
        @SuppressLint("StaticFieldLeak")
        lateinit var mContext: Context
    }

    override fun onCreate() {
        super.onCreate()
        instance = this
        mContext = applicationContext
        //解决7.0版本后调用相机报错的问题
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            val builder = StrictMode.VmPolicy.Builder()
            StrictMode.setVmPolicy(builder.build())
        }
        //初始化mmkv
        val rootDir = MMKV.initialize(this)
        Log.d(TAG, "mmkv_root------:${rootDir}")
        lateInitSDK()
    }

    /**
     * 非必须在主线程初始化的SDK放到子线程初始化
     */
    private fun lateInitSDK() {
        Thread {
            //设置进程的优先级，不与主线程抢资源
            Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND)
            LiveEventBus.config().lifecycleObserverAlwaysActive(false).setContext(this)
            initBugly()
        }.start()
    }

    /**
     * 初始化 Bugly
     */
    private fun initBugly() {
        // CrashReport.initCrashReport(applicationContext, Constant.BUGLY_ID, BuildConfig.DEBUG, strategy)
        // 调用 Bugly 的初始化方法来设置崩溃报告功能。
        // Constant.BUGLY_ID 是 Bugly 提供的应用 ID，BuildConfig.DEBUG 可能用于区分调试和发布版本。
        Bugly.init(applicationContext, Constant.BUGLY_ID, false)
    }
}

1.3 BaseFragment

TODOL 24/12/10