cocos2d-x接入支付等sdk时，如果逻辑写在lua端，经常会用到lua与java的交互，下面通过一个实例来实现lua与java的交互过程
一、lua端
lua中使用luaj.callStaticMethod调用java静态方法
1 2 3 4 5 6 7 8 9 10 11 12 13 | local function onCallBack(msg)
--回调处理
if msg == "success"
--
end
end
local function callJavaCallBackLua()
local luaj = require "cocos.cocos2d.luaj"
local className = "org/cocos2dx/cpp/AppActivity"
local args = { "test", onCallBack }
local sigs = "(Ljava/lang/String;I)V"
local ok = luaj.callStaticMethod(className,"callJavaMethod",args,sigs)
end
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以上实现通过lua端调用java的静态方法callJavaMethod，并传入2个参数，一个字符串“test”和一个回调函数onCallBack
二、java端
cocos2d-x提供了Cocos2dxLuaJavaBridge带有如下方法可以使用：
1 2 3 4 | public static native int callLuaFunctionWithString(int luaFunctionId, String value);
public static native int callLuaGlobalFunctionWithString(String luaFunctionName, String value);
public static native int retainLuaFunction(int luaFunctionId);
public static native int releaseLuaFunction(int luaFunctionId);
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在这里我们使用调用局部Lua-Function callLuaFunctionWithString来做示例
在AppActivity.java合适位置中加入代码
1 | import org.cocos2dx.lib.Cocos2dxLuaJavaBridge;
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1 | static int luaFuncCallback = 0;
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1 2 3 4 | public static void callJavaMethod(final String test, final int luaFunc){
luaFuncCallback = luaFunc;
}
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1 2 3 4 5 6 7 | mainActivity.runOnGLThread(new Runnable() {
@Override
public void run() {
Cocos2dxLuaJavaBridge.callLuaFunctionWithString(luaFuncCallback, "success");
Cocos2dxLuaJavaBridge.releaseLuaFunction(luaFuncCallback);
}
});
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