android 插件化开发研究 2 - cheyiliu/All-in-One GitHub Wiki

源码分析umeng apf框架

github地址 https://github.com/umeng/apf

源码工程结构(3个工程+1个依赖jar)

com.example.host，宿主工程，调用各种plugin
- 宿主工程依赖apf-framework.jar，暂未开源但可用jd-jui查看代码
com.example.plugin1.ifs，接口定义
com.example.plugin1， plugin工程，实现接口并供宿主调用

逐个分析这4(3个工程+1个依赖jar)部分

com.example.plugin1.ifs，接口定义部分

lib工程，定义接口

public interface ExampleApfService { public int add(int a, int b);

public int minus(int a, int b);

public int multiply(int a, int b);

public int divide(int a, int b);

}


### com.example.plugin1， plugin工程
* 实现接口

public class ExampleApfServiceImpl implements com.example.plugin1.ifs.ExampleApfService { private static final String TAG = ExampleApfServiceImpl.class.getName();

/**
 * Flawed implementation, mind overflow.
 */
@Override
public int add(int a, int b) {
	Log.d(TAG, "calling implementation add.");
	return a + b;
}

@Override
public int minus(int a, int b) {
	Log.d(TAG, "calling implementation minus.");
	return a - b;
}

/**
 * Flawed implementation of {@link #multiply(int, int)}. Mind overflow.
 */
@Override
public int multiply(int a, int b) {
	Log.d(TAG, "calling implementation multiply.");
	return a * b;
}

/**
 * Flawed implementation, mind divided by zero.
 */
@Override
public int divide(int a, int b) {
	Log.d(TAG, "calling implementation divide.");
	return a / b;
}

}


### com.example.host， 宿主工程
* 核心代码

PluginManager.registerPlugin("com.example.plugin1"); PluginManager.loadPlugins(getApplicationContext()); ExampleApfService service = (ExampleApfService) PluginManager .newInstance("com.example.plugin1.ExampleApfServiceImpl");

service.add(a, b);