<SPAN style="FONT-SIZE: 14px"> <com.android.settings.IconPreferenceScreen
android:key="call_settings"
settings:icon="@drawable/ic_settings_call"
android:title="@string/call_settings_title">
<intent
android:action="android.intent.action.MAIN"
android:targetPackage="com.android.phone"
android:targetClass="com.android.phone.CallFeaturesSetting" />
</com.android.settings.IconPreferenceScreen></SPAN>

<SPAN style="FONT-SIZE: 14px"><PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:phone="http://schemas.android.com/apk/res/com.android.phone"
android:title="@string/call_settings">
<PreferenceScreen
android:key="button_fdn_key"
android:title="@string/fdn"
android:summary="@string/sum_fdn"
android:persistent="false">
<intent android:action="android.intent.action.MAIN"
android:targetPackage="com.android.phone"
android:targetClass="com.android.phone.FdnSetting" />
</PreferenceScreen>
<PreferenceCategory
android:key="button_voicemail_category_key"
android:title="@string/voicemail"
android:persistent="false">
<ListPreference
android:key="button_voicemail_provider_key"
android:title="@string/voicemail_provider"
android:summary="@string/sum_voicemail_choose_provider"
android:defaultValue=""
android:persistent="true"
/>
<PreferenceScreen android:key="button_voicemail_setting_key"
android:title="@string/voicemail_settings"
android:persistent="false">
<!-- Note for all com.android.phone.EditPhoneNumberPreference objects
The last several attributes are for use with the EditText field
in the dialog. These attributes are forwarded to that field
when the edittext is created. The attributes include:
1. android:singleLine
2. android:autoText
3. android:background -->
<com.android.phone.EditPhoneNumberPreference
android:key="button_voicemail_key"
android:title="@string/voicemail_settings_number_label"
android:persistent="false"
android:dialogTitle="@string/voicemail"
phone:confirmMode="confirm"
android:singleLine="true"
android:autoText="false" />
</PreferenceScreen>
</PreferenceCategory>
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</SPAN>

<SPAN style="FONT-SIZE: 14px"><CheckBoxPreference
android:key="press_power_end_call_key"
android:title="@string/press_power_end_call"
android:persistent="false"/></SPAN>

<SPAN style="FONT-SIZE: 14px"><PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:phone="http://schemas.android.com/apk/res/com.android.phone"
android:title="@string/call_settings">
<CheckBoxPreference
android:key="press_power_end_call_key"
android:title="@string/press_power_end_call"
android:persistent="false"/>
<PreferenceScreen
android:key="button_fdn_key"
android:title="@string/fdn"
android:summary="@string/sum_fdn"
android:persistent="false">
<intent android:action="android.intent.action.MAIN"
android:targetPackage="com.android.phone"
android:targetClass="com.android.phone.FdnSetting" />
</PreferenceScreen>
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<SPAN style="FONT-SIZE: 14px">//add by xxnan
else if (preference == press_power_end_call) {
//如果勾選就將1存到system表的press_power_end_call中
Settings.System.putInt(getContentResolver(),
"press_power_end_call",
press_power_end_call.isChecked() ? 1 : 0);
//end by xxnan </SPAN>

protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
if (DBG) log("Creating activity");
mPhone = PhoneFactory.getDefaultPhone();
addPreferencesFromResource(R.xml.call_feature_setting);
//add by xxnan
ContentResolver resolver = getContentResolver();
press_power_end_call= (CheckBoxPreference)findPreference(press_power_end_call_key);
press_power_end_call.setOnPreferenceChangeListener(this);
// 獲的數據庫system表里press_power_end_call的值，也就是是否選擇了checkboxpreference
int press_power_end_call_key=Settings.System.getInt(getContentResolver(),
"press_power_end_call",0);
//如果得到的值是1，則下次打開setting的話，選項框要勾選
if(press_power_end_call_key==1)
press_power_end_call.setChecked(true);
//end by xxnan
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
// get buttons
PreferenceScreen prefSet = getPreferenceScreen();
mSubMenuVoicemailSettings = (EditPhoneNumberPreference)findPreference(BUTTON_VOICEMAIL_KEY);
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case KeyEvent.KEYCODE_POWER: {
result &= ~ACTION_PASS_TO_USER;
if (down) {
Log.i("xxnan","xxnan"+"xiaxiangnan");
ITelephony telephonyService = getTelephonyService();
boolean hungUp = false;
if (telephonyService != null) {
try {
if (telephonyService.isRinging()) {
// Pressing Power while there's a ringing incoming
// call should silence the ringer.
telephonyService.silenceRinger();
} else if ((mIncallPowerBehavior
& Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP) != 0
&& telephonyService.isOffhook()) {
// Otherwise, if "Power button ends call" is enabled,
// the Power button will hang up any current active call.
hungUp = telephonyService.endCall();
}
} catch (RemoteException ex) {
Log.w(TAG, "ITelephony threw RemoteException", ex);
}
}
interceptPowerKeyDown(!isScreenOn || hungUp);
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case KeyEvent.KEYCODE_POWER: {
result &= ~ACTION_PASS_TO_USER;
if (down) {
Log.i("xxnan","xxnan"+"xiaxiangnan");
int end_call_key=Settings.System.getInt(mContext.getContentResolver(),
"press_power_end_call",0); //取出數據庫中是否打開這一功能的值
Log.i("end_call_key","end_call_key="+end_call_key);
ITelephony telephonyService = getTelephonyService();
boolean hungUp = false;
if (telephonyService != null) {
try {
//如果是電話正在打且開啟了這一功能，當按power鍵就掛掉電話
if (telephonyService.isRinging()&&end_call_key==1) {
// Pressing Power while there's a ringing incoming
// call should silence the ringer.
// telephonyService.silenceRinger();
hungUp=telephonyService.endCall();
} else if ((mIncallPowerBehavior
& Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP) != 0
&& telephonyService.isOffhook()) {
// Otherwise, if "Power button ends call" is enabled,
// the Power button will hang up any current active call.
hungUp = telephonyService.endCall();
}
} catch (RemoteException ex) {
Log.w(TAG, "ITelephony threw RemoteException", ex);
}
}
interceptPowerKeyDown(!isScreenOn || hungUp);
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