Android app会crash的原因及解决方法

Thread.setDefaultUncaughtExceptionHandler(new KillApplicationHandler(loggingHandler));

public KillApplicationHandler(LoggingHandler loggingHandler) {
 @Override
 public void uncaughtException(Thread t, Throwable e) {
 //捕获到异常
   try {
     ......
     //打印crash日志，展示崩溃弹窗等
     // Bring up crash dialog, wait for it to be dismissed
     ActivityManager.getService().handleApplicationCrash(
       mApplicationObject, new ApplicationErrorReport.ParcelableCrashInfo(e));
      } catch (Throwable t2) {
        .... 
      } finally {
        // Try everything to make sure this process goes away.
        Process.killProcess(Process.myPid());//杀死进程
        System.exit(10);
      }
    }
  } 

class MainApplication : Application() {
  override fun onCreate() {
    super.onCreate()
    Thread.setDefaultUncaughtExceptionHandler { _, e ->
      //捕获到异常，只打印日志，不杀进程
      Log.e("MainApplication", "${Thread.currentThread().name} 捕获到异常：${e.message}")
    }
  }
}

private fun openCrashProtected() {
    Log.d(tag, "openCrashProtected")
    Handler(Looper.getMainLooper()).post {
      while (true) {
        try {
          Looper.loop()
          Log.d(tag, "main looper execute loop")
        } catch (e: Throwable) {
          //所有主线程中的异常都会被catch住，从而不会发生crash
          Log.e(tag, "catch exception: " + e.message)
        }
      }
    }
  }

private fun registerLifeCycle() {
    registerActivityLifecycleCallbacks(object : ActivityLifecycleCallbacks {
      override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
        ActivityStack.Instance().push(activity)
      }

      override fun onActivityResumed(activity: Activity) {
      }

      override fun onActivityStarted(activity: Activity) {
      }

      override fun onActivityPaused(activity: Activity) {

      }

      override fun onActivityDestroyed(activity: Activity) {
        ActivityStack.Instance().pop(activity)
      }

      override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {

      }

      override fun onActivityStopped(activity: Activity) {
      }
    })
  }

//主线程出现异常，关闭栈顶activity
ActivityStack.Instance().curr()?.finish()