Android应用程序在模拟器和设备上不断崩溃

I am executing a very basic task of opening another activity using a button. The code seems to be error-free but the app crashes without even showing the main activity. This happens on both the emulator as well as my device. When the app has no function, i.e. when the app has just buttons which do nothing, the app works fine. But if I try to make them do anything(intent to open another activity, or to play with their visibility) the app crashes. The logcat is as follows:I am executing a very basic task of opening ano