Android Learning Notes---Activity

As a result of the semester training requirements, I began to learn Android. I've been studying for five days since the beginning of this month. Time is short, just learned things easy to forget, I take notes.

The first is the understanding of activity. Activity is first a Java class, we create a new activity class, we have to inherit the activity, which is in the Android jar package.

I understand that he is a container of controls, a window that we look at when we use the phone. There is no real substance in itself.

Each activity created will have to be registered in the Androidmanifest.xml file.

Have to re-oncreate the method.

Write the controls in the activity in the XML file in the layout file

Android Learning Notes---Activity