(Use the latest Google AdMobAdsSdk-4.3.1.jar in 2012. Here I write a small example for you to learn and use. There are specific comments in it, and a listener has been added. This example runs without problems. Note: if the project imports your myeclipse garbled code, it is that everyone's code is inconsistent. Go to the disk to find the source file directly and open it. Copy it and paste it in your workspace file or download the/data/457454 I just updated)