MTK6577+Android4.0之增加重启功能

长按power按键，弹出下图：

图1

这里要实现增加Reboot的功能，下面记下要实现所做的修改。

1.     在长按power按键弹出的界面增加Reboot界面

首先关机的那个弹出菜单是在

frameworks/base/policy/src/com/android/internal/policy/impl/GlobalActions.java这个文件中的private AlertDialog createDialog()，如下：

 /*** Create the global actions dialog.* @return A new dialog.*/private AlertDialog createDialog() {mSilentModeAction = newSilentModeAction(mAudioManager, mHandler);mAirplaneModeOn = new ToggleAction(R.drawable.ic_lock_airplane_mode,R.drawable.ic_lock_airplane_mode_off,R.string.global_actions_toggle_airplane_mode,R.string.global_actions_airplane_mode_on_status,R.string.global_actions_airplane_mode_off_status) {void onToggle(boolean on) {if (Boolean.parseBoolean(SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE))){mIsWaitingForEcmExit =true;// Launch ECM exit dialogIntent ecmDialogIntent =new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS,null);ecmDialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);mContext.startActivity(ecmDialogIntent);} else {changeAirplaneModeSystemSetting(on);}}@Overrideprotected voidchangeStateFromPress(boolean buttonOn) {// In ECM mode airplane statecannot be changedif (!(Boolean.parseBoolean(SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE)))) {mState = buttonOn ?State.TurningOn : State.TurningOff;mAirplaneState = mState;}}public boolean showDuringKeyguard(){return true;}public booleanshowBeforeProvisioning() {return false;}//M{public boolean isEnabled() {if(KeyguardUpdateMonitor.dual_sim_setting == 0){Log.e(TAG, "if userunselect the dual sim mode setting on phone starting, the airplane mode can notbe set.");return false; //if user hasnot yet selected any item in the dual_sim_mode_setting dialog on phonestarting, the airplane mode should be disabled.}else {returnsuper.isEnabled();}}//}M};mItems = new ArrayList<Action>();// first: power offmItems.add(new SinglePressAction(com.android.internal.R.drawable.ic_lock_power_off,R.string.global_action_power_off) {public void onPress() {// shutdown by making sureradio and power are handled accordingly.ShutdownThread.shutdown(mContext, true);}public booleanshowDuringKeyguard() {return true;}public booleanshowBeforeProvisioning() {return true;}});// next: airplane modemItems.add(mAirplaneModeOn);// last: silent modeif (SHOW_SILENT_TOGGLE) {mItems.add(mSilentModeAction);}mAdapter = new MyAdapter();final AlertDialog.Builder ab = newAlertDialog.Builder(mContext);ab.setAdapter(mAdapter, this).setInverseBackgroundForced(true);final AlertDialog dialog = ab.create();dialog.getListView().setItemsCanFocus(true);dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);dialog.setOnDismissListener(this);return dialog;
}

上面的代码在// first: power off和// next: airplane mode之间增加了reboot部分，代码如下：

// second:reboot,kandi add at 2015.01.21mItems.add(new SinglePressAction(com.android.internal.R.drawable.ic_lock_reboot,R.string.global_action_reboot) {public void onPress() {// shutdown by making sureradio and power are handled accordingly.ShutdownThread.reboot(mContext,null, true);}public booleanshowDuringKeyguard() {return true;}public booleanshowBeforeProvisioning() {return true;}});

此代码主要阐述下面几点：

(1)  增加字符串global_action_reboot和图片资源ic_lock_reboot，这些的定义在后面描述。

(2)  ShutdownThread.reboot(mContext,null, true)此函数是调用

/*** Request a clean shutdown, waiting forsubsystems to clean up their* state etc.  Must be called from a Looper thread in whichits UI* is shown.** @param context Context used to displaythe shutdown progress dialog.* @param reason code to pass to the kernel(e.g. "recovery"), or null.* @param confirm true if user confirmationis needed before shutting down.*/public static void reboot(final Contextcontext, String reason, boolean confirm) {mReboot = true;mRebootReason = reason;shutdown(context, confirm);
}

reason 如果值为是null，正常重启；如果是recovery，系统重启进入recovery mode

confirm true显示关机提示框，需要用户；false不显示提示框，直接关机。

2.     增加点击Reboot后的重启

为了在按下重启选项之后，能出现”重启“之类的提示，还需要修改\frameworks\base\core\java\com\android\internal\app\ ShutdownThread.java中的shutdown函数和beginShutdownSequence函数：

(1)  shutdown函数

修改之前
final intresourceId = longPressBehavior == 2? com.android.internal.R.string.shutdown_confirm_question
: com.android.internal.R.string.shutdown_confirm;
修改之后
final intresourceId = longPressBehavior == 2? com.android.internal.R.string.shutdown_confirm_question: (mReboot ?com.android.internal.R.string.reboot_confirm :com.android.internal.R.string.shutdown_confirm);

(2)  beginShutdownSequence函数

修改之前：
pd.setTitle(context.getText(com.android.internal.R.string.power_off));
pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));修改之后：
if(mReboot){pd.setTitle(context.getText(com.android.internal.R.string.global_action_reboot));pd.setMessage(context.getText(com.android.internal.R.string.reboot_progress));}else{pd.setTitle(context.getText(com.android.internal.R.string.power_off));pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));}

3.     增加字符串和图片资源

(1)  增加字符串

在frameworks/base/core/res/res/values/strings.xml中添加一下字符串：

<stringname="reboot_progress">Reboot...\u2026</string>
<stringname="reboot_confirm" product="default">Your phone willReboot.</string>
<stringname="reboot_confirm" product="default">Your phone willReboot.</string>
<stringname="global_action_reboot">Reboot</string>
<stringname="reboot">Reboot2</string>

在\frameworks\base\core\res\res\values\public.xml增加以下字符串

<publictype="drawable" name="ic_menu_sort_by_size"id="0x0108009d" />//已有
<publictype="drawable" name="ic_lock_reboot"id="0x0108009e" />//增加

(2)  增加重启的图片资源

把ic_lock_reboot.png拷贝到\frameworks\base\core\res\res\drawable-hdpi目录下

4.     编译及升级

./mk r dr，然后单独升级system.img