Intel HAXM is required to run this AVD. HAXM is not installed. Install Intel HAXM for better emulation performance.

这是一个提示信息，意思是您需要安装Intel HAXM（Hardware Accelerated Execution Manager）才能在 Android 虚拟设备（AVD）上运行应用程序。Intel HAXM 可以提高模拟器的性能，使您更好地模拟 Android 设备。您需要下载并安装Intel HAXM，然后在启动 AVD 之前将其启用。

相关问题

haxm is not installed

As an AI language model, I do not have access to your system or machine, so I cannot confirm if HAXM is installed on your system or not. However, if you are trying to install an Android emulator on your computer or laptop, you may need to install HAXM to speed up the performance of the emulator.

Here are the steps to install HAXM on Windows:

1. Go to the Intel HAXM download page: https://github.com/intel/haxm/releases
2. Download the latest version of HAXM for your operating system.
3. Double-click the downloaded file to begin the installation process.
4. Follow the on-screen instructions to install HAXM.

If you are using a Mac, you can install HAXM using the Android SDK Manager:

1. Open Android Studio and click on the "SDK Manager" icon.
2. Click on the "SDK Tools" tab.
3. Scroll down to "Intel x86 Emulator Accelerator (HAXM installer)" and check the box next to it.
4. Click on "Apply" to install HAXM.

After installing HAXM, you may need to configure your Android emulator to use it. To do this, open the AVD Manager in Android Studio, select your emulator, and click on "Edit." Under "Emulated Performance," select "Hardware - GLES 2.0" and choose "HAXM" as the "Graphics" setting. Click on "Finish" to save your changes.

Error while waiting for device: Nexus 4 API 29 is already running. If that is not the case, delete D:\android_AVD\.android\avd\Nexus_4_API_29.avd\*.lock and try again.

这个错误通常是因为已经有一个名为Nexus 4 API " 的模拟器正在运行。你可以尝试删除 `D:\android_AVD\.android\avd\Nexus_4_API_29.avd\*.lock` 文件，然后再次尝试。这个文件是用来锁定模拟器的，删除它可以解决这个问题。如果问题仍然存在，你可以尝试重启电脑或者使用其他方法来解决这个问题。希望这能帮到你！如果你有其他问题，我很乐意帮助你。