Android Development self-study Notes (vi): Declarative Permissions and Activity_android

Sorry Oh, the last piece of Android self-study development Sixth code control interface dug a hole, if not run up classmate, please pay attention to view this article.

Android Project's soul Master Androidmanifest.xml is finally on the scene, and we can call it a am file, knowing and learning to configure AM files is a very important basis for learning about Android.

Am file defines the required permissions for the Android app, the components that require life, and some information that interacts with other apps, I think I need to further explain AM file, look forward to my update it!

Well, back in the pit, we've used a series of articles about how to develop a look professional program, but the problem is it doesn't run!!! The problem arises because we forgot to submit our usage rights to the AM file and our activity classes.

Declaring permissions

Because we need access to the network, we need to have access to the network.

Copy Code code as follows:

<uses-permission android:name= "Android.permission.INTERNET" ></uses-permission>

We have defined two activity, respectively, myactivity and resultactivity, so we need to submit it.

Copy Code code as follows:

<activity android:name= "myactivity" android:label= "@string/app_name" >
<intent-filter>
<action android:name= "Android.intent.action.MAIN"/>
<category android:name= "Android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name= "Resultactivity"
Android:label= "@string/app_name" >
</activity>

Where MyActivity also has such a child node: Intent-filter, if you see that the intent-filter contains a child node that is defined above, then the entry activity that is used to indicate when the program starts is myactivity. Because if the property values of these two nodes contain main and launcher respectively, it is the entry activity when the program is started.

OK, now start running your program again.