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1.默认开机启动GPRS功能

    一：只有第一次开机运行开机引导时，才会开启GPRS功能

    packages/apps/Settings/

    --- a/src/com/mediatek/settings/SetupWizardForOobe.java
    +++ b/src/com/mediatek/settings/SetupWizardForOobe.java
    @@ -45,6 +45,9 @@ import com.mediatek.gemini.SimInfoEditor;
     import com.mediatek.gemini.SimManagement;
     import com.mediatek.xlog.Xlog;

    +import android.content.Intent;
    +import android.content.IntentFilter;
    +
     public class SetupWizardForOobe extends Activity {
         //implement OnClickListener
         private static final String TAG = "SetupWizardForOobe";
    @@ -108,11 +111,19 @@ public class SetupWizardForOobe extends Activity {
             int stepId = getIntent().getIntExtra(EXTRA_OOBE_SETTINGS, -1);
             switch (stepId) {
                 case ID_DATE_TIME_SETTINGS :
    +                Intent intent = new Intent(Intent.ACTION_DATA_DEFAULT_SIM_CHANGED);
    +                long simid = 1;
    +                intent.putExtra("simid", simid);
    +                sendBroadcast(intent);
                     title.setText(R.string.date_and_time);
                     DateTimeSettings dateTimeSettings = new DateTimeSettings();
                     transaction.replace(R.id.fragment_container, dateTimeSettings);
                     break;
                 case ID_SIM_INFO_SETTINGS :
    +                Intent intent1 = new Intent(Intent.ACTION_DATA_DEFAULT_SIM_CHANGED);
    +                long simid1 = 1;
    +                intent1.putExtra("simid", simid1);
    +                sendBroadcast(intent1);
                     title.setText(mExt.customizeSimDisplayString(
                         getString(R.string.oobe_sim_info_title), SLOT_ALL));
                     SimManagement simInfo = new SimManagement();

二：每次开机都会开启GPRS功能
packages/apps/Settings/

        diff --git a/src/com/mediatek/gemini/SimManagement.java b/src/com/mediatek/gemini/SimManagement.java
        index aa26b12..38f0f4a 100755
        --- a/src/com/mediatek/gemini/SimManagement.java
        +++ b/src/com/mediatek/gemini/SimManagement.java
        @@ -381,6 +381,7 @@ public class SimManagement extends SettingsPreferenceFragment implements
                     Xlog.d(TAG,"onrestore mSelectedVideoSimId = " + 
                                 mSelectedVideoSimId + " mSelectedGprsSimId = " + mSelectedGprsSimId);
                 }
        +        mConnService.setMobileDataEnabled(true);
                 /// M: for CT to replace the SIM to UIM
                 replaceIMString();
                 // oobe

git恢复被修改的文件

恢复到最后一次提交的改动：

git checkout --  + 需要恢复的文件名

但是，需要注意的是，如果该文件已经 add 到暂存队列中，上面的命令就不灵光喽
需要先让这个文件取消暂存：

git reset HEAD --  + 需要取消暂存的文件名

然后再使用第一条命令。

如果感觉命令多了记不住，那就做一两个匿名呗，比如：

git config --global alias.unstage 'reset HEAD --'
git config --global alias.restore 'checkout --'

我们拿 README.md 这个文件举例，比如修改了一段文字描述，想恢复回原来的样子：

git restore README.md

即可，如果修改已经被  git add README.md  放入暂存队列，那就要

git unstage README.md
git restore README.md