uniapp开发android原生插件（二）：引入依赖、开发插件

一、前言

上一篇文章中说到android原生插件的创建过程，大致看一下插件的目录结构：

在开发插件之前我们需要引入一些相关的依赖，依赖会从以下内容体现，依赖相关文件请参考：官方原生插件开发案例

注意uni-app插件目前仅支持Module扩展和Component扩展，以下开发的插件是Component扩展

二、开发步骤

2.1 引入相关依赖

• 将官方原生插件开发案例下的uniapp-v8-release.aar文件，复制到 /Plugin-Demo/app/libs 目录下
• 修改myapplication目录下的build.gradle文件，文件内容如下（需要修改的地方有相应的标注）：

plugins {
    id 'com.android.library'
}
android {
    compileSdk 30
    defaultConfig {
        minSdk 21
        targetSdk 30
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        consumerProguardFiles "consumer-rules.pro"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}
// 此处需要修改
repositories {
    flatDir {
        dirs 'libs'
    }
}
// 此处需要修改
dependencies {
    compileOnly fileTree(dir: 'libs', include: ['*.jar'])
    compileOnly fileTree(dir: '../app/libs', include: ['uniapp-v8-release.aar'])
    compileOnly "com.android.support:recyclerview-v7:28.0.0"
    compileOnly "com.android.support:support-v4:28.0.0"
    compileOnly "com.android.support:appcompat-v7:28.0.0"
    implementation 'com.alibaba:fastjson:1.1.46.android'
    implementation 'com.facebook.fresco:fresco:1.13.0'
}

2.2 开发第一个插件

package com.ali.myapplication;
import android.content.Context;
import android.graphics.Color;
import android.widget.TextView;
import java.util.HashMap;
import java.util.Map;
import io.dcloud.feature.uniapp.UniSDKInstance;
import io.dcloud.feature.uniapp.annotation.UniJSMethod;
import io.dcloud.feature.uniapp.ui.action.AbsComponentData;
import io.dcloud.feature.uniapp.ui.component.AbsVContainer;
import io.dcloud.feature.uniapp.ui.component.UniComponent;
import io.dcloud.feature.uniapp.ui.component.UniComponentProp;
public class TestText extends UniComponent<TextView> {
    @Override
    protected TextView initComponentHostView(Context context) {
        TextView textView = new TextView(context);
        textView.setTextSize(20);
        textView.setTextColor(Color.BLACK);
        return textView;
    }
    // 属性
    @UniComponentProp(name = "tel")
    public void setTel(String telNumber) {
        getHostView().setText("tel: " + telNumber);
        Map<String, Object> params = new HashMap<>();
        Map<String, Object> number = new HashMap<>();
        number.put("tel", telNumber);
        //目前uni限制 参数需要放入到"detail"中 否则会被清理
        params.put("detail", number);
        fireEvent("onTel", params);
    }
    // 方法
    @UniJSMethod
    public void clearTel() {
        getHostView().setText("");
    }
    @Override
    public void onActivityResume() {
        super.onActivityResume();
    }
    @Override
    public void onActivityPause() {
        super.onActivityPause();
    }
    @Override
    public void onActivityDestroy() {
        super.onActivityDestroy();
    }
    public TestText(UniSDKInstance instance, AbsVContainer parent, int type, AbsComponentData componentData) {
        super(instance, parent, type, componentData);
    }
    public TestText(UniSDKInstance instance, AbsVContainer parent, AbsComponentData componentData) {
        super(instance, parent, componentData);
    }
}

2.3 插件打包

打包文件在 /Plugin-Demo/myapplication/build/outputs/aar 目录下：myapplication-release.aar

三、常见问题

3.1 错误一

Caused by: org.gradle.api.InvalidUserCodeException: Build was configured to prefer settings repositories over project repositories but repository 'flatDir' was added by build file 'myapplication\build.gradle'

解决方案：删除项目根目录下 settings.gradle 文件中的 dependencyResolutionManagement

3.2 问题二

Execution failed for task ':myapplication:generateReleaseRFile'.
> Could not resolve all files for configuration ':myapplication:releaseCompileClasspath'.
   > Could not find androidx.recyclerview:recyclerview:1.0.0.
     Searched in the following locations:
       - file:/G:/myproject/study/Plugin-Demo/myapplication/libs/recyclerview-1.0.0.jar
       - file:/G:/myproject/study/Plugin-Demo/myapplication/libs/recyclerview.jar
     Required by:

解决方案：在项目根目录的 build.gradle 文件中添加以下内容：

allprojects {
    repositories {
        google()
        jcenter()
    }
}