待機/主屏界面輸入數字1～9后跳轉到了聯系人界面。
 
待機規則：如果輸入的是0～9或者+*#，會切換到撥號界面；輸入其它字符，則切換到聯系人界面。
原因分析：模擬器輸入1～9，看到的是1～9；手機鍵盤輸入1～9，實際輸入的是.adgj...。可以在寫信窗口驗證鍵盤輸入。
解決方法：在待機程序中添加keyCode的處理，如果keyCode的值是KeyEvent.KEYCODE_0~KEYCODE_9或者KeyEvent.KEYCODE_STAR、KeyEvent.KEYCODE_POUND、KeyEvent.KEYCODE_PLUS，轉換成對應的是0～9或者+*#，其它流程不變。另外，模擬器的*和#的keyCode值與10個數字的keyCode值重疊（電腦鍵盤傳輸造成的，手機鍵盤不存在這個問題），這塊也需要作特殊處理。
代碼如下：

public final class com.android.launcher.Launcher
{
……

    public final static String KEY_STAR  = "*";
    public final static String KEY_POUND = "#";
    public final static String KEY_PLUS  = "+";
   
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        boolean handled = super.onKeyDown(keyCode, event);
        if (!handled && keyCode != KeyEvent.KEYCODE_ENTER) {
            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
                    keyCode, event);
            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
                // something usable has been typed - dispatch it now.
                String str = mDefaultKeySsb.toString();
                boolean isDialable = true;
                //for emunlator
             if ( keyCode >= KeyEvent.KEYCODE_0 && keyCode<= KeyEvent.KEYCODE_9 )
             {
              if ( ! KEY_STAR.equals( str ) && ! KEY_POUND.equals( str ) )
              {//for emulator
               str = String.valueOf( keyCode2Value(keyCode) );
              }
             }
             else if ( keyCode == KeyEvent.KEYCODE_STAR )
                {
              str = KEY_STAR;
                }
             else if ( keyCode == KeyEvent.KEYCODE_POUND )
                {
              str = KEY_POUND;
                }
             else if ( keyCode == KeyEvent.KEYCODE_PLUS )
                {
              str = KEY_PLUS;
                }
             else
             {
                 final int count = str.length();
                 for (int i = 0; i < count; i++)
                 {
                     if (!PhoneNumberUtils.isReallyDialable(str.charAt(i)))
                     {
                         isDialable = false;
                         break;
                     }
                 }
             }
                Intent intent;
                if (isDialable) {
                    intent = new Intent(Intent.ACTION_DIAL, Uri.fromParts("tel", str, null));
                } else {
                    intent = new Intent(Contacts.Intents.UI.FILTER_CONTACTS_ACTION);
                    intent.putExtra(Contacts.Intents.UI.FILTER_TEXT_EXTRA_KEY, str);
                }
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                try {
                    startActivity(intent);
                } catch (android.content.ActivityNotFoundException ex) {
                    // Oh well... no one knows how to filter/dial. Life goes on.
                }
                mDefaultKeySsb.clear();
                mDefaultKeySsb.clearSpans();
                Selection.setSelection(mDefaultKeySsb, 0);
                return true;
            }
        }
        return handled;
    }
   
    private int keyCode2Value( int keyCode )
    {
     switch ( keyCode )
     {
      case KeyEvent.KEYCODE_0:
       return ToneGenerator.TONE_DTMF_0;
      
      case KeyEvent.KEYCODE_1:
       return ToneGenerator.TONE_DTMF_1;
      
      case KeyEvent.KEYCODE_2:
       return ToneGenerator.TONE_DTMF_2;
      
      case KeyEvent.KEYCODE_3:
       return ToneGenerator.TONE_DTMF_3;
      
      case KeyEvent.KEYCODE_4:
       return ToneGenerator.TONE_DTMF_4;
      
      case KeyEvent.KEYCODE_5:
       return ToneGenerator.TONE_DTMF_5;
      
      case KeyEvent.KEYCODE_6:
       return ToneGenerator.TONE_DTMF_6;
      
      case KeyEvent.KEYCODE_7:
       return ToneGenerator.TONE_DTMF_7;
      
      case KeyEvent.KEYCODE_8:
       return ToneGenerator.TONE_DTMF_8;
      
      case KeyEvent.KEYCODE_9:
       return ToneGenerator.TONE_DTMF_9;
      case KeyEvent.KEYCODE_STAR://*
       return ToneGenerator.TONE_DTMF_P;
      
      case KeyEvent.KEYCODE_POUND://#
       return ToneGenerator.TONE_DTMF_S;
      
      case KeyEvent.KEYCODE_PLUS://+
//       return ToneGenerator.;
     
      default:
       return 0;
     }
    }
……
}

本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/netpirate/archive/2009/06/26/4300157.aspx