R 1不能被解析为一个变量日食的android [英] R cannot be resolved to a variable eclipse android

问题描述

我已经尝试过在这个网站所有的答案present。删除了进口android.R;线。即使这样我每次运行我的项目时，它说：你的项目中包含的错误，运行应用程序之前解决这些问题。我工作的Eclipse。当我创建我有2个错误，这不能不遇到一个新的Andr​​oid应用程序项目R不能解析为一个变量。这里是我的code为MainActivity.Java

 包com.example.myfirstapp;
    //进口android.R;
    进口android.app.Activity;
    进口android.os.Bundle;
    进口android.view.Menu;
    类MainActivity延伸活动{        @覆盖
        保护无效的onCreate（捆绑savedInstanceState）{
            super.onCreate（savedInstanceState）;
            setContentViewq（R.layout.activity_main）;
        }        @覆盖
        公共布尔onCreateOptionsMenu（菜单菜单）{
            //充气菜单;如果是present这增加了项目操作栏。
        。getMenuInflater（）膨胀（R.menu.main，菜单）;
        返回true;
    }}
 

解决方案

只是试试这个在您的进口

 进口your_packgae_name.R;
 

I already tried all the answers present in this website. Deleted the "import android.R;" line. Even then every time I run my project it says "Your project contains errors, fix them before running your application". I'm working on Eclipse. As soon as I create a new android application project I am encountered with 2 errors which say "R cannot be resolved to a variable". Here's my code for MainActivity.Java

    package com.example.myfirstapp;


    //import android.R;
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.Menu;


    class MainActivity extends Activity {

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentViewq(R.layout.activity_main);
        }

        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

解决方案

just try this at your imports

    import your_packgae_name.R;

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