Modify the hosts file in Android

The steps are as follows:
1. Get the root permission: ADB Root
2. Set/system to read/write: ADB remount
3. Copy the hosts file to PC: ADB pull/system/etc/hosts E: \ hosts
4. modify files on a PC
5. copy the file on the PC to the mobile phone: ADB push E: \ hosts/system/etc/hosts
But in step 5, some people will report an out of memory error.
This is because the command line is used to start the instance without adding a parameter. However, you can use the following command to start the instance.
Emulator-AVD android2.1-partition-size 128