简述

创建AOSP源码可编译一个简单apk的过程，代码子目录结构图如下所示

文件的添加

1.com.custom.test目录下创建TestActivity.java文件
用于简单的界面显示类

package com.custom.test;import android.app.Activity;
import android.os.Bundle;import androidx.annotation.Nullable;import com.custom.test.R;public class TestActivity extends Activity {private static final String TAG = "TestActivity";@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_test);}
} 

2.布局文件activity_test.xml
显示出来的布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:padding="16dp"><Buttonandroid:id="@+id/btn_test"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="test"android:textAllCaps="false" /></LinearLayout>

3.values下的资源文件
strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2"><string name="app_name">custom_test</string>
</resources>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.custom.test"><applicationandroid:allowBackup="false"android:label="@string/app_name"android:usesCleartextTraffic="false"><activityandroid:name=".TestActivity"android:excludeFromRecents="true"android:theme="@style/Transparent"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application>
</manifest>

5.Android.bp文件

android_app {name: "custom_test",static_libs: ["androidx.annotation_annotation",],srcs: ["src/**/*.java"],platform_apis: true,certificate: "platform",
}

通过编译可输出一个custom_test.apk的文件