Android 加載串口通信讀取信息時 AndroidStudio loadLibrary失敗

static {
		System.loadLibrary("serial_port");
	}

今天想連接串口做一個新功能 但是連接串口加載庫的時候總是找不到serial_port庫

1：

項目結構是這樣的

 

 

庫文件不多說 github很多

Android.mk

#
# Copyright 2009 Cedric Priscal
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License. 
#

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

TARGET_PLATFORM := android-3

LOCAL_MODULE    := serial_port
LOCAL_SRC_FILES := SerialPort.c


#LOCAL_MODULE    := serial_port
#LOCAL_SRC_FILES := SerialPort.c
LOCAL_LDLIBS    := -llog

include $(BUILD_SHARED_LIBRARY)

但是寫完Android.mk爲什麼還是不識別呢？

這是什麼原因造成的呢？

要加上這句話

我項目中的庫文件是build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"

    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        consumerProguardFiles 'consumer-rules.pro'
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }


        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            }
        }
    

    }

    dependencies {
        api fileTree(dir: 'libs', include: ['*.jar'])
        api fileTree(include: '*.jar', dir: 'libs')
        implementation 'androidx.appcompat:appcompat:1.1.0'
        testImplementation 'junit:junit:4.12'
        androidTestImplementation 'androidx.test.ext:junit:1.1.1'
        androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    }

    repositories {
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
    }