When the andorid project creates an AVD, the OK button cannot be lit.

After online verification, it is found that the CPU/Abi option cannot be selected and "no system images installed for this target" is displayed, that is, there is no suitable system image, by comparing with the windows in which AVD manager creates a simulator in the installed ADT-bundle, it is found that the drop-down list option is exactly the SDK Manager installation package android4.2.2 (API 17) "arm Eabi v7a system image" is not installed, as shown in figure 2. After installation, the problem is solved. If "Inter x86 atom system image" is installed, more options are available for the CPU/Abi list.