爲什麼不能在drawable下訪問xml文件？所有的

首先我非常新的Android和我不知道很多關於它。我正在嘗試玩它，我現在下面這個教程： http://www.androidhive.info/2011/08/android-tab-layout-tutorial/爲什麼不能在drawable下訪問xml文件？所有的

我創建了一個類，如下

package com.example.tabbedactivity; 

import android.app.TabActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.widget.TabHost; 
import android.widget.TabHost.TabSpec; 

public class TabbedActivity extends TabActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_tabbed); 

     TabHost tabHost = getTabHost(); 

     // Tab for Photos 
     TabSpec photospec = tabHost.newTabSpec("Photos"); 
     // setting Title and Icon for the Tab 
     photospec.setIndicator("Photos", getResources().getDrawable(R.drawable.icon_photos_tab)); 
     Intent photosIntent = new Intent(this, PhotosActivity.class); 
     photospec.setContent(photosIntent); 

     // Tab for Songs 
     TabSpec songspec = tabHost.newTabSpec("Songs"); 
     songspec.setIndicator("Songs", getResources().getDrawable(R.drawable.icon_songs_tab)); 
     Intent songsIntent = new Intent(this, SongsActivity.class); 
     songspec.setContent(songsIntent); 

     // Tab for Videos 
     TabSpec videospec = tabHost.newTabSpec("Videos"); 
     videospec.setIndicator("Videos", getResources().getDrawable(R.drawable.icon_videos_tab)); 
     Intent videosIntent = new Intent(this, VideosActivity.class); 
     videospec.setContent(videosIntent); 

     // Adding all TabSpec to TabHost 
     tabHost.addTab(photospec); // Adding photos tab 
     tabHost.addTab(songspec); // Adding songs tab 
     tabHost.addTab(videospec); // Adding videos ta 
    } 

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

}

，並相應地我已根據可繪製三個XML文件等示於下 icon_photos_tab.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <!-- When selected, use grey --> 
    <item android:drawable="@drawable/photo-hover" 
      android:state_selected="true" /> 
    <!-- When not selected, use white--> 
    <item android:drawable="@drawable/photo-unhover" /> 
</selector>

icon_songs_tab.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <!-- When selected, use grey --> 
    <item android:drawable="@drawable/music-hover" 
      android:state_selected="true" /> 
    <!-- When not selected, use white--> 
    <item android:drawable="@drawable/music-unhover" /> 
</selector>

icon_videos_tab.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <!-- When selected, use grey --> 
    <item android:drawable="@drawable/video-hover" 
      android:state_selected="true" /> 
    <!-- When not selected, use white--> 
    <item android:drawable="@drawable/video-unhover" /> 
</selector>

現在IDE顯示問題，當我嘗試訪問下繪製這些XML文件編碼的精確行如下所示的是TabbedActivity.java（類的一部分，該我已以上示出）

TabSpec songspec = tabHost.newTabSpec("Songs"); 
      songspec.setIndicator("Songs", getResources().getDrawable(R.drawable.icon_songs_tab)); 


TabSpec photospec = tabHost.newTabSpec("Photos"); 
      // setting Title and Icon for the Tab 
      photospec.setIndicator("Photos", getResources().getDrawable(R.drawable.icon_photos_tab)); 


TabSpec videospec = tabHost.newTabSpec("Videos"); 
      videospec.setIndicator("Videos", getResources().getDrawable(R.drawable.icon_videos_tab));

和誤差說

個
在該行多個標誌 - icon_photos_tab不能得到解決或無法在現場 - R.drawable不能被解析爲一個變量

究竟可能是什麼問題（我真的很新的Android。。這是一種liek我的第一個應用程序，我havenot通過任何理論）

更新走後，我得到了控制檯上以下誤差修改

[2013-01-12 12:32:02 - TabbedActivity] res\drawable-ldpi\video-hover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-mdpi\video-hover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-xhdpi\video-hover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-hdpi\video-unhover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-ldpi\video-unhover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-mdpi\video-unhover.png: Invalid file name: must contain only [a-z0-9_.] 
[2013-01-12 12:32:02 - TabbedActivity] res\drawable-xhdpi\video-unhover.png: Invalid file name: must contain only [a-z0-9_.]

來源

2013-01-12 user1720616