LeanCloud在android studio的SDK安装和连接

之前看官方文档看到头晕，网上我看都是有jar包的，我就有点迷终于摸索出来了一点方法在Android studio中去安装SDK，连接leancloud

官网下载好SDK

可以根据需要下载，可用Git，SDK下载网址：

点击链接下载: SDK下载.

复制相应包

看产品文档需要哪个包，就下载哪个。在这里我需要存取数据，所以用了leancloud-push-lite，把这一整个文件夹放到项目的目录下

放置目录如图：

修改整个项目的gradle文件（可适当参照对比）

buildscript {          repositories { google() jcenter()         maven {             url "https://oss.sonatype.org/content/groups/public/"//仓库地址 } }     dependencies {         classpath 'com.android.tools.build:gradle:3.6.1' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } allprojects {     repositories { google() jcenter()         maven {             url "https://oss.sonatype.org/content/groups/public/"//仓库地址 } } }  task clean(type: Delete) { delete rootProject.buildDir } 

在app的build.gradle依赖加上

    implementation 'cn.leancloud:storage-android:6.5.6'     implementation 'io.reactivex.rxjava2:rxandroid:2.1.1' 

把

 implementation fileTree(dir: 'libs', include: ['*.jar']) 

再修改为

 // implementation fileTree(dir: 'libs', include: ['*.jar']) implementation ('cn.leancloud:realtime-android:6.5.3') {         exclude group: 'cn.leancloud', module: 'realtime-core'} 

加上

    packagingOptions {         exclude 'META-INF/LICENSE.txt'         exclude 'META-INF/NOTICE.txt' }     lintOptions {         abortOnError false } 

所有修改之后如下，可对比参照：

apply plugin: 'com.android.application'  android {     compileSdkVersion 29     buildToolsVersion "29.0.2"      defaultConfig {         applicationId "com.example.huanwu"         minSdkVersion 16         targetSdkVersion 29         versionCode 1         versionName "1.0"          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" }     compileOptions {         sourceCompatibility JavaVersion.VERSION_1_8         targetCompatibility JavaVersion.VERSION_1_8 }       buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } }     packagingOptions {         exclude 'META-INF/LICENSE.txt'         exclude 'META-INF/NOTICE.txt' }     lintOptions {         abortOnError false } }  dependencies { // implementation fileTree(dir: 'libs', include: ['*.jar']) implementation ('cn.leancloud:realtime-android:6.5.3') {         exclude group: 'cn.leancloud', module: 'realtime-core' }      implementation 'androidx.appcompat:appcompat:1.1.0'     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'androidx.test.ext:junit:1.1.1'     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'       implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha03'      implementation 'cn.leancloud:storage-android:6.5.6'     implementation 'io.reactivex.rxjava2:rxandroid:2.1.1' } 

在app的AndroidManifest.xml文件上

加上

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 

 android:name=".MainActivity" 

 <receiver android:name="cn.leancloud.push.AVBroadcastReceiver"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED"/> <action android:name="android.intent.action.USER_PRESENT"/> <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> </intent-filter> </receiver> 

修改之后的文件参考如下

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="https://schemas.android.com/apk/res/android" package="com.example.test"> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <application         android:allowBackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:roundIcon="@mipmap/ic_launcher_round"         android:supportsRtl="true"         android:theme="@style/AppTheme"         android:name=".MainActivity"> > <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android:name="cn.leancloud.push.AVBroadcastReceiver"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED"/> <action android:name="android.intent.action.USER_PRESENT"/> <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> </intent-filter> </receiver> </application> </manifest> 

测试自己的活动

package com.example.test; import androidx.appcompat.app.AppCompatActivity; import android.app.Application; import android.os.Bundle; import cn.leancloud.AVOSCloud; import cn.leancloud.AVObject; public class MainActivity extends Application {     @Override     public void onCreate() { super.onCreate(); // 提供 this、App ID、App Key、Server Host 作为参数 // 注意这里千万不要调用 cn.leancloud.core.AVOSCloud 的 initialize 方法，否则会出现 NetworkOnMainThread 等错误。         AVOSCloud.initialize(this, "XC2Rr7WVhYA68PaFTu2voQQf-gzGzoHsz", "UF3Ivhw9uLXPDUDJ4m2MBTQh", "https://please-replace-with-your-customized.domain.com");//放自己的域名          AVObject testObject = new AVObject("TestObject");         testObject.put("words", "Hello world!");         testObject.saveInBackground().blockingSubscribe(); } } 

如果编译有问题，可以尝试在app的build.gradle加上

compileOptions {     sourceCompatibility JavaVersion.VERSION_1_8     targetCompatibility JavaVersion.VERSION_1_8 } 

加上之后参考如下

apply plugin: 'com.android.application'  android {     compileSdkVersion 29     buildToolsVersion "29.0.2"      defaultConfig {         applicationId "com.example.huanwu"         minSdkVersion 16         targetSdkVersion 29         versionCode 1         versionName "1.0"          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" }     compileOptions {         sourceCompatibility JavaVersion.VERSION_1_8         targetCompatibility JavaVersion.VERSION_1_8 }       buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } }     packagingOptions {         exclude 'META-INF/LICENSE.txt'         exclude 'META-INF/NOTICE.txt' }     lintOptions {         abortOnError false } } 

测试成功