Eclipse中的错误表明我的Main.java不在文件夹中，但它不在那里

Question

嘿，伙计们，谢谢你们的回答，我真的是安卓编程的新手（我今天开始），当我试图构建一个5秒后弹出的具有启动背景的应用程序时，它会给我各种各样的错误，包括一些文件没有出现，以及"跳过48帧！"我会在这里发布错误

07-16 21:29:23.119: E/Trace(641): error opening trace file: No such file or directory (2)
07-16 21:29:23.309: D/dalvikvm(641): GC_FOR_ALLOC freed 73K, 3% free 8051K/8259K, paused 44ms, total 46ms
07-16 21:29:23.309: I/dalvikvm-heap(641): Grow heap (frag case) to 8.497MB for 614416-byte allocation
07-16 21:29:23.390: D/dalvikvm(641): GC_CONCURRENT freed 1K, 3% free 8650K/8903K, paused 33ms+16ms, total 79ms
07-16 21:29:23.709: I/Choreographer(641): Skipped 42 frames!  The application may be doing too much work on its main thread.
07-16 21:29:23.770: D/gralloc_goldfish(641): Emulator without GPU emulation detected.
07-16 21:29:29.019: I/Choreographer(641): Skipped 48 frames!  The application may be doing too much work on its main thread.

这是main.java

公共类Main扩展活动｛

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
Thread logoTimer = new Thread(){
    public void run(){
        try{
            sleep(5000);
            Intent menuIntent = new Intent("com.kamath.thebasics.MENU");
            startActivity(menuIntent);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally{
        finish();   
        }
    }
};
logoTimer.start();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}

}

和菜单.java

公共类菜单扩展活动｛

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
}
@Override
protected void onResume() {
    // TODO Auto-generated method stub
    super.onResume();
}

}

Answer 1

试试这个（在主活动的onCreate中）：

Thread myThread = new Thread(){
        public void run(){
            try{
                sleep(5000);
            }catch(InterruptedException e){
                e.printStackTrace();
            }finally{
                Intent menuIntent = new Intent("com.kamath.thebasics.MENU");
                startActivity(menuIntent);
            }
        }
    };
    myThread.run();

也许这会有所帮助。