What is the function of androidmanifest.xml file

The functions of the androidmanifest.xml file: 1. It is a necessary file in every android program. It is located in the root directory of the entire project; 2. Configure the components, permissions, and some related information necessary for the program to run; 3. It is the entrance to the entire application, so it helps to understand Android more deeply.

The role of the androidmanifest.xml file:

AndroidManifest.xml is for each android A necessary file in the program, it is located in the root directory of the entire project. We use this file every day to configure the necessary components, permissions, and some related information for the program to run. But how much do we really know about this file, or are we just stuck at simple configuration without understanding its specific meaning and why it is set up this way? Today, let us learn in detail the specific meaning of each parameter in this file. Because it is the entrance to the entire application, it will help us understand Android more deeply.

1. Overview:

AndroidManifest.xml is the entry file of the Android application. It describes the components exposed in the package (activities, services, etc.), their respective implementation classes, and each The kind of data that can be processed and the starting location. In addition to declaring Activities, ContentProviders, Services, and Intent Receivers in the program, you can also specify permissions and instrumentation (security controls and testing).

2. Structure chart

<?xmlversion="1.0"encoding="utf-8"?>
<manifest>
    <uses-sdk/> 
    <uses-configuration/> 
    <uses-feature/>  
    <uses-permission/>
    <permission/>
    <permission-tree/>
    <permission-group/>
    <instrumentation/> 
    <supports-screens/>
    <application> 
       <activity> 
           <intent-filter>
               <action/> 
               <category/> 
           </intent-filter> 
      </activity>
       <activity-alias> 
           <intent-filter></intent-filter> 
           <meta-data/> 
      </activity-alias> 
       <service> 
           <intent-filter></intent-filter> 
           <meta-data/> 
       </service>
       <receiver>
           <intent-filter></intent-filter> 
           <meta-data/> 
       </receiver> 
       <provider> 
           <grant-uri-permission/>
           <meta-data/> 
       </provider> 
       <uses-library/> 
    </application>  
</manifest>

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