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设备APP

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提示:以下是本篇文章正文内容,下面案例可供参考

一、开发工具

使用软件Android Studio 4.1版本

1、软件介绍

Android Studio 是基于 IntelliJ IDEA 的官方 Android 应用开发集成开发环境 (IDE)。除了 IntelliJ 强大的代码编辑器和开发者工具,Android Studio 提供了更多可提高 Android 应用构建效率的功能,例如:

基于 Gradle 的灵活构建系统

快速且功能丰富的模拟器

可针对所有 Android 设备进行开发的统一环境

Instant Run,可将变更推送到正在运行的应用,无需构建新的 APK

可帮助您构建常用应用功能和导入示例代码的代码模板和 GitHub 集成

丰富的测试工具和框架

可捕捉性能、易用性、版本兼容性以及其他问题的 Lint 工具

C++ 和 NDK 支持

内置对 Google 云端平台的支持,可轻松集成 Google Cloud Messaging 和 App 引擎

2、Android JDK配置

3、Android Gradle配置

4、Android API配置

5、项目依赖配置

二、项目细节详情

1、andriodmanifest.xml配置详情

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.groundspace.lampmqtt">
    <!-- Permissions the Application Requires -->
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!--<uses-permission android:name="android.permission.READ_PHONE_STATE" />-->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:requestLegacyExternalStorage="true"
        android:screenOrientation="sensor"
        android:theme="@style/AppTheme">
        <activity android:name="com.groundspace.lampmqtt.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver
            android:name=".BootBroadcastReceiver"
            android:enabled="true"
            android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </receiver>
        <activity android:name=".Jieshou"/>
        <service android:name="org.eclipse.paho.android.service.MqttService">
        </service>
    </application>
</manifest>

2、ExampleInstrumentedTest配置详情

package com.groundspace.lampmqtt;
import android.content.Context;
import androidx.test.InstrumentationRegistry;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.assertEquals;
/**
 * Instrumented test, which will execute on an Android device.
 *
 * @see <a href="http://d.android.com/tools/testing" rel="external nofollow"  rel="external nofollow" >Testing documentation</a>
 */
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext() {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getTargetContext();
        assertEquals("com.groundspace.lampmqtt", appContext.getPackageName());
    }
}

3、ExampleUnitTest配置详情

package com.groundspace.lampmqtt;
import org.junit.Test;
import static org.junit.Assert.*;
/**
 * Example local unit test, which will execute on the development machine (host).
 *
 * @see <a href="http://d.android.com/tools/testing" rel="external nofollow"  rel="external nofollow" >Testing documentation</a>
 */
class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        assertEquals(4, 2 + 2);
    }
}

4、Utils配置详情

package com.groundspace.lampmqtt;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class Utils {
    public static final String bytesToHexString(byte[] bArray) {
        StringBuffer sb = new StringBuffer(bArray.length);
        String sTemp;
        for (int i = 0; i < bArray.length; i++) {
            sTemp = Integer.toHexString(0xFF & bArray[i]);
            if (sTemp.length() < 2) {
                sb.append(0);
            }
            sb.append(sTemp.toUpperCase());
        }
        return sb.toString();
    }
    public static String encryptHMAC(String signMethod, String content, String key) throws Exception {
        SecretKey secretKey = new SecretKeySpec(key.getBytes("utf-8"), signMethod);
        Mac mac = Mac.getInstance(secretKey.getAlgorithm());
        mac.init(secretKey);
        byte[] data = mac.doFinal(content.getBytes("utf-8"));
        return bytesToHexString(data);
    }
}

5、activity_main.xml配置详情

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/beijing"
    tools:context=".MainActivity"
    android:orientation="vertical">
    <LinearLayout
        android:singleLine="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingLeft="120dp"
        android:paddingTop="85dp">
    <ImageView
        android:layout_width="200dp"
        android:layout_height="80dp"
        android:src="@drawable/yaoquan"
        android:gravity="left"
      />
    </LinearLayout>
    <LinearLayout
        android:singleLine="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingLeft="380dp"
        android:paddingTop="200dp">
    <Button
        android:id="@+id/fh1"
        android:layout_width="200dp"
        android:layout_height="80dp"
        android:text="进入系统"
        android:textSize="35dp"/>
    </LinearLayout>
    <ScrollView
        android:id="@+id/scrollView2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
        </LinearLayout>
    </ScrollView>
</LinearLayout>

6、Gradle Scripts配置详情

build.gradle(Project)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven {
        url "https://repo.eclipse.org/content/repositories/paho-snapshots/"
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle(Module)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 31
    defaultConfig {
        applicationId "com.groundspace.lampmqtt"
        minSdkVersion 14
        targetSdkVersion 31
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    buildToolsVersion '30.0.0'
}

dependencies {
    implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.0'
    implementation group: 'commons-codec', name: 'commons-codec', version: '1.11'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:31.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'org.eclipse.paho:org.eclipse.paho.android.service:1.1.1'
    implementation files('..\\jxl-2.6.12.jar')
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation files('../.idea/libraries/gson-2.7.jar')
    implementation files('../.idea/libraries/json.jar')
}

总结

以上就是今天要讲的内容,本文仅仅简单介绍了Android Studio 4.1写设备APP的配置,而Android Studio 4.1提供了大量能使我们快速便捷地开发客户端的具体部署和方法。

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