我重新启动了 Android Studio 并在 AVD MANAGER 中创建了一个新设备，然后我增加了模拟器的 RAM 大小并且它运行良好.

I restarted Android Studio and create a new device in AVD MANAGER then I have increased the RAM size of emulator and it works nicely.

更新有时在将应用程序构建到模拟器的过程中关闭模拟器时会发生这种情况.

UPDATED Sometimes it happens when you close emulator during building the App in to emulator.