Remove 3G icons from Android 2.1 mobile devices

For Android 2.1The attractive elements such as the System and the 7 inch touch screen make people look forward to the actual use experience of T7, but the actual use experience is not as perfect as imagined. It must be related to the multi-task running of the Android system. Parallel Running of multiple programs will definitely affect the overall running speed. In addition, the hardware configuration of T7 cannot be removed. The maximum frequency of the T7 processor is about MHz, and the running speed is quite good. When there are more open programs, it slows down ......
If you think the running speed is slow, open "Advanced Task Manager" and close unnecessary programs to improve the usage speed. There are a lot of apps in the Android system itself and the software market, so I won't try them all here. I will use several main apps to test the user experience.

Today, the mobile phone, 3G, and other signal images in the status bar of android 2.1 are removed, because android 2.1 is used as a MID terminal, and the mobile phone module is not needed. The signal is not harmonious on the status bar.

Directory:

 
 

  
  
frameworks/base/services/java/com/android/server/status/StatusBarPolicy.java 
 
 

It mainly includes two parts:

1) Remove the following code about the mobile phone signal in private StatusBarPolicy (Context context, StatusBarService service ).

 
 

  
  
 /* phone_signal  
  
  
        mPhone = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);  
  
  
        mPhoneData = IconData.makeIcon("phone_signal",  
  
  
                null, com.android.internal.R.drawable.stat_sys_signal_null, 0, 0);  
  
  
        mPhoneIcon = service.addIcon(mPhoneData, null);  
  
  
 
  
  
        // register for phone state notifications.  
  
  
        ((TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE))  
  
  
                .listen(mPhoneStateListener,  
  
  
                          PhoneStateListener.LISTEN_SERVICE_STATE  
  
  
                         | PhoneStateListener.LISTEN_SIGNAL_STRENGTHS  
  
  
                         | PhoneStateListener.LISTEN_CALL_STATE  
  
  
                        | PhoneStateListener.LISTEN_DATA_CONNECTION_STATE  
  
  
                        | PhoneStateListener.LISTEN_DATA_ACTIVITY);  
  
  
 
  
  
        // data_connection  
  
  
        mDataData = IconData.makeIcon("data_connection",  
  
  
                null, com.android.internal.R.drawable.stat_sys_data_connected_g, 0, 0);  
  
  
        mDataIcon = service.addIcon(mDataData, null);  
  
  
        service.setIconVisibility(mDataIcon, false);  
  
  
*/  
  
  
 
  
  
/*   mCdmaRoamingIndicatorIconData = IconData.makeIcon("cdma_eri",  
  
  
                null, com.android.internal.R.drawable.stat_sys_roaming_cdma_0, 0, 0);  
  
  
        mCdmaRoamingIndicatorIcon = service.addIcon(mCdmaRoamingIndicatorIconData, null);  
  
  
        service.setIconVisibility(mCdmaRoamingIndicatorIcon, false);  */ 
 
 

(2) Remove the filter Signal

 
 

  
  
// Filter. addAction (TelephonyIntents. ACTION_SIM_STATE_CHANGED );
  
  
There is also the code in the Acceptance Method onReceive (Context context, Intent intent)
  
  
/* Else if (action. equals (TelephonyIntents. ACTION_SIM_STATE_CHANGED )){
  
  
UpdateSimState (intent );
  
  
}*/
 
 

Build an Android Development Environment

Install Android SDK 2.0 and 2.1

Android Activity and Intent mechanism learning notes

Security Foresight: mobile device security protection cannot be ignored