Android开发Can't create handler inside thread that has not called Looper.prepare()

public void onResponse(final Response response) throws IOException {
        

Toast.makeText(MainActivity.this, "test.", Toast.LENGTH_SHORT).show();
    

}

在线程中加入Toast提示，出现如下error： 

java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

修改后：

public void onResponse(final Response response) throws IOException {
        
        Looper.prepare();
              
Toast.makeText(MainActivity.this, "d", Toast.LENGTH_SHORT).show();
   
        Looper.loop();
     
}
即可正常运行。