Android Learning "Activity interface Jump"

First, interface jump
1. Define a new activity step:
1) Define a layout view (activity2_main.xml file),
2) Define a subclass that inherits activity (in the Mainactivity2.java file)
3) in the MainActivity2 class, override the life cycle method OnCreate () call Setcontextview () to bind the view (XML, hard-coded) to the activity sub-class

setContentView(R.layout.activity2_main);

4) Register the activity subclass with the Androidmanifest.xml manifest file (two methods):
Show Call

<activity            android:name="com.example.dave.myapplication.MainActivity2"            android:label="@string/app_name">        </activity>

implicit invocation

    <activityandroid:name="Com.example.dave.myapplication.MainActivity2"  Android:label="@string/app_name">                                    <intent-filter>                <action android:name="Star_login" />                <category android:name="Android.intent.category.DEFAULT" />            </intent-filter>    </activity>

5) Define a intent object within Mainactivity and invoke the Startacitivity () method of the current activity to start the new acitivity.
Display definition:

            //MainActivity2为跳转的组件        new Intent(MainActivity.this, MainActivity2.class);                startActivity(intent);

Implicit definition:

        new Intent("star_login");                startActivity(intent);

Android Learning "Activity interface Jump"