Android supports the installation and configuration method of the framework of the library document file
Android supports the installation and configuration method of the framework of the library document file
Overview:
Android support library (SUPPORT LIBRARIES) provides a series of powerful classes and tools for simplifying Android application development and providing the latest API features compatible with old versions.In order to be able to use the functions of these support libraries, developers need to correctly install and configure the corresponding support library framework in the project.This article will introduce the method of installing and configured Android support library file frameworks, and provide corresponding Java code examples.
step:
1. Update Android Studio version:
Make sure you are using the latest version of Android Studio to obtain the latest support library functions and updated API features.
2. Add dependencies to the Build.gradle file:
In your project's BUILD.GRADLE file, find the DependenCies part, and add the following code:
groovy
dependencies {
Implementation 'com.android.support:appcompat-v7: version number'
// Add other support library dependencies that need to be used
}
In this example, we added the dependency of the AppCompat-V7 support library.You can add the dependencies of other support libraries according to your needs, such as Design, RecyclerView, etc., using the same format.
3. Synchronous project:
Once you add the dependence of the support library, you need to synchronize your project to obtain the required library documents.In Android Studio, click "File" in the menu bar, and then select "Sync Project with Gradle Files".
4. Configure MINSDKVERSION and Targetsdkversion:
In your App Module's Build.gradle file, make sure you set up the right MINSDKVERSION and targetsdkversion.These values should match the support library you used to ensure compatibility.
groovy
android {
defaultConfig {
MINSDKVERSION version number
Targetsdkversion version number
// Other configuration items
}
// Other configuration items
}
5. Use the class and functions of the support library:
Once you complete the above configuration steps, you can use the class and functions of the support library in your Java code.For example, if you want to use the ACTIONBAR in the AppCompat-V7 support library, you can call it in your activity in your activity: below:
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar actionBar = getSupportActionBar();
// Further operate ACTIONBAR ...
}
}
Summarize:
Installation and configuration of Android support library file framework is an important step in developing Android applications.This article provides a series of steps, from updating Android Studio to adding dependencies correctly, and provides a Java code example using the AppCompat-V7 support library.By correcting the support library framework, developers can easily use the categories and functions of various support libraries to provide better user experience and equipment compatibility.
