android5.1添加android長按power鍵重啓功能

時間 2019-11-19

標籤 android5.1 android 添加 power 重啓功能欄目 Android 简体版

原文原文鏈接

當用戶長按power鍵的時候，系統會在PhoneWindowManager中調用html

mGlobalActions.showDialog，來顯示關機、飛行、重啓等界面選項。java

而咱們須要在GlobalActions.Java中建立一個重啓的選項。下面咱們從GlobalActions中的createDialog節選一段代碼：android

[java] view plain copygit

mItems = new ArrayList<Action>();
String[] defaultActions = mContext.getResources().getStringArray(
com.android.internal.R.array.config_globalActionsList);//讀取配置文件中config_globalActionsList內容，下面詳細介紹
ArraySet<String> addedKeys = new ArraySet<String>();
for (int i = 0; i < defaultActions.length; i++) {
String actionKey = defaultActions[i];
if (addedKeys.contains(actionKey)) {
// If we already have added this, don't add it again.
continue;
}
if (GLOBAL_ACTION_KEY_POWER.equals(actionKey)) {
mItems.add(new PowerAction());
} else if (GLOBAL_ACTION_KEY_AIRPLANE.equals(actionKey)) {
mItems.add(mAirplaneModeOn);
else if (GLOBAL_ACTION_KEY_REBOOT.equals(actionKey)) {//咱們本身添加了一個重啓功能，在config文件中找到reboot這一項就添加這個reboot
mItems.add(new RebootAction());
} else if (GLOBAL_ACTION_KEY_BUGREPORT.equals(actionKey)) {
if (Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.BUGREPORT_IN_POWER_MENU, 0) != 0 && isCurrentUserOwner()) {
mItems.add(getBugReportAction());
}
} else if (GLOBAL_ACTION_KEY_SILENT.equals(actionKey)) {
if (mShowSilentToggle) {
mItems.add(mSilentModeAction);
}
} else if (GLOBAL_ACTION_KEY_USERS.equals(actionKey)) {
if (SystemProperties.getBoolean("fw.power_user_switcher", false)) {
addUsersToMenu(mItems);
}
} else if (GLOBAL_ACTION_KEY_SETTINGS.equals(actionKey)) {
mItems.add(getSettingsAction());
} else if (GLOBAL_ACTION_KEY_LOCKDOWN.equals(actionKey)) {
mItems.add(getLockdownAction());
} else {
Log.e(TAG, "Invalid global action key " + actionKey);
}
// Add here so we don't add more than one.
addedKeys.add(actionKey);
}

咱們本身還須要新建一個RebootAction，咱們看下代碼：app

[java] view plain copyasync

private final class RebootAction extends SinglePressAction {
private RebootAction() {
super(com.android.internal.R.drawable.ic_lock_restart,//界面圖片和內容
R.string.global_action_restart);
}
public void onPress() {
mWindowManagerFuncs.reboot(true);//長按重啓
}
public boolean showDuringKeyguard() {
return true;
}
public boolean showBeforeProvisioning() {
return true;
}
}

還有須要在資源文件中添加一些內容：ide

須要在core/res/res/values-zh-rCN/strings.xml中添加以下：函數

[html] view plain copyui

<string name="global_action_restart">"從新啓動"</string>
<string name="restart_confirm_question">"您要從新啓動手機嗎？"</string>
<string name="restart_confirm">"您的手機會從新啓動。"</string>
<string name="restart">"從新啓動"</string>

在core/res/res/values/strings.xml中this

[html] view plain copy

<string name="global_action_restart">Restart</string>
<string name="restart_confirm_question">"Would you like to restart?"</string>
<string name="restart_confirm">"Your phone will restart."</string>
<string name="restart">"Restart"</string>

在core/res/res/values/symbols.xml中

[html] view plain copy

<java-symbol type="string" name="global_action_restart"/>
<java-symbol type="string" name="restart_confirm_question"/>
<java-symbol type="string" name="restart_confirm"/>
<java-symbol type="string" name="restart"/>
<java-symbol type="drawable" name="ic_lock_restart" />

還須要添加一個圖標的圖片

[html] view plain copy

diff --git a/core/res/res/drawable-hdpi/ic_lock_restart.png b/core/res/res/drawable-hdpi/ic_lock_restart.png
diff --git a/core/res/res/drawable-ldpi/ic_lock_restart.png b/core/res/res/drawable-ldpi/ic_lock_restart.png
diff --git a/core/res/res/drawable-mdpi/ic_lock_restart.png b/core/res/res/drawable-mdpi/ic_lock_restart.png
diff --git a/core/res/res/drawable-xhdpi/ic_lock_restart.png b/core/res/res/drawable-xhdpi/ic_lock_restart.png

最後咱們須要在core/res/res/values/config.xml中增長几個選項來打開重啓等功能

[html] view plain copy

<string-array translatable="false" name="config_globalActionsList">
<item>power</item>
<item>bugreport</item>
<item>users</item>
<item>airplane</item>//飛行模式
<item>reboot</item>//新增重啓功能
</string-array>

而上面再GlobalActions中添加的reboot，須要在WindowManagerPolicy新增接口

[java] view plain copy

public void shutdown(boolean confirm);
public void rebootSafeMode(boolean confirm);
public void reboot(boolean confirm);//新增的接口

而且最總在WindowManagerService中實現：

[java] view plain copy

@Override
public void reboot(boolean confirm) {
Log.d(TAG,"reboot confirm:" + confirm);
ShutdownThread.reboot(mContext, null, confirm);
}

最後調用ShutdownThread的reboot函數。

[java] view plain copy

public static void reboot(final Context context, String reason, boolean confirm) {
mReboot = true;//這個參數最後決定是重啓仍是關機
mRebootSafeMode = false;
mRebootReason = reason;
shutdownInner(context, confirm);
}

下面主要看下ShutdownThread的shutdownInner這個函數，主要是建立彈出框，以及開啓線程執行關機或重啓。

[java] view plain copy

static void shutdownInner(final Context context, boolean confirm) {
synchronized (sIsStartedGuard) {
if (sIsStarted) {
Log.d(TAG, "Request to shutdown already running, returning.");
return;
}
}
final int longPressBehavior = context.getResources().getInteger(
com.android.internal.R.integer.config_longPressOnPowerBehavior);
final int resourceId = mRebootSafeMode
? com.android.internal.R.string.reboot_safemode_confirm
: (longPressBehavior == 2
? com.android.internal.R.string.shutdown_confirm_question
: com.android.internal.R.string.shutdown_confirm);
Log.d(TAG, "Notifying thread to start shutdown longPressBehavior=" + longPressBehavior);
final int resourceIdMsg;
final int resourceIdTitle;
if(mReboot){//這段是咱們添加的，根據不一樣選項建立不一樣的界面
resourceIdTitle = com.android.internal.R.string.restart;
resourceIdMsg = longPressBehavior == 2
? com.android.internal.R.string.restart_confirm_question
: com.android.internal.R.string.restart_confirm;
}
else if(mRebootSafeMode){
resourceIdTitle = com.android.internal.R.string.reboot_safemode_title;
resourceIdMsg = com.android.internal.R.string.reboot_safemode_confirm;
}
else {
resourceIdTitle = com.android.internal.R.string.power_off;
resourceIdMsg = longPressBehavior == 2
? com.android.internal.R.string.shutdown_confirm_question
: com.android.internal.R.string.shutdown_confirm;
}
if (confirm) {//這個參數決定是否須要彈出對話框
final CloseDialogReceiver closer = new CloseDialogReceiver(context);
if (sConfirmDialog != null) {
sConfirmDialog.dismiss();
}
sConfirmDialog = new AlertDialog.Builder(context)//這邊彈出一個對話框也將其進行了修改，主要是顯示
.setTitle(resourceIdTitle)
.setMessage(resourceIdMsg)
.setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
beginShutdownSequence(context);//當確認了調用beginShutdownSequence函數，執行關機或重啓。
}
})
.setNegativeButton(com.android.internal.R.string.no, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//set the mReboot to default value for next time.
mReboot = false;//不確認就直接結束了，不調用beginShutdownSequence
}
})
.create();
closer.dialog = sConfirmDialog;
sConfirmDialog.setOnDismissListener(closer);
sConfirmDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
sConfirmDialog.show();
} else {//當不須要確認框彈出，直接調用beginShutdownSequence函數，執行關機或重啓。
beginShutdownSequence(context);
}
}