轉載請註明出處:http://blog.csdn.net/louiswangbing/article/details/6688240
上一篇文章中講到android源碼定製要點,說了個大概的方法和方向,現在,就來實戰一下。
在Android系統中,長按Power鍵默認會彈出對話框讓你選擇“飛行模式”,“靜音”,“關機”等功能。如下圖所示:
但這些功能都對Android-x86和其他終端產品就沒什麼必要了。本文就簡單介紹下如何定製關機界面。
我的目標是長按Power鍵,將會關機,彈出“設備將要關機”選擇對話框。如果可以選擇“是”關機,和“否”返回系統。
按照android源碼定製要點中提到的,首先你要對整個系統有全面的瞭解,找到彈出原來這個選擇框的代碼,它在這裏:
- <pre name="code" class="java">frameworks\policies\base\phone\com\android\internal\policy\impl\PhoneWindowManager.java
- Runnable mPowerLongPress = new Runnable() {
- public void run() {
- mShouldTurnOffOnKeyUp = false;
- performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
- sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
- showGlobalActionsDialog();
- }
- };
調用showGlobalActionsDialog方法之後將會聚到有“飛行模式”、“靜音”、“關機”等選項的對話框。
找到這裏,我們就知道該做什麼了!幹掉它,換成我們想要的關機代碼,就大功告成了!既然這樣,事不宜遲,讓我們趕快到showGloabalActionDialog方法中看看關機的部分在哪裏!
showGlobalActionsDialog的實現部分在這裏:
- frameworks\policies\base\phone\com\android\internal\policy\impl\GlobalAction.java
我們進去看看:
- public void showDialog(boolean keyguardShowing, boolean isDeviceProvisioned) {
- mKeyguardShowing = keyguardShowing;
- mDeviceProvisioned = isDeviceProvisioned;
- if (mDialog == null) {
- mStatusBar = (StatusBarManager)mContext.getSystemService(Context.STATUS_BAR_SERVICE);
- mDialog = createDialog();
- }
- prepareDialog();
- mStatusBar.disable(StatusBarManager.DISABLE_EXPAND);
- mDialog.show();
- }
我們可以很清楚的看到,這裏新建了一個mDialog,然後prepare接着就show了它,那麼,這個mDialog就是關鍵了,看看它是怎麼被createDialog創建出來的吧,仍然在這個文件中:
- /**
- * Create the global actions dialog.
- * @return A new dialog.
- */
- private AlertDialog createDialog() {
- mSilentModeToggle = new ToggleAction(
- R.drawable.ic_lock_silent_mode,
- R.drawable.ic_lock_silent_mode_off,
- R.string.global_action_toggle_silent_mode,
- R.string.global_action_silent_mode_on_status,
- R.string.global_action_silent_mode_off_status) {
- void willCreate() {
- // XXX: FIXME: switch to ic_lock_vibrate_mode when available
- mEnabledIconResId = (Settings.System.getInt(mContext.getContentResolver(),
- Settings.System.VIBRATE_IN_SILENT, 1) == 1)
- ? R.drawable.ic_lock_silent_mode_vibrate
- : R.drawable.ic_lock_silent_mode;
- }
- void onToggle(boolean on) {
- if (on) {
- mAudioManager.setRingerMode((Settings.System.getInt(mContext.getContentResolver(),
- Settings.System.VIBRATE_IN_SILENT, 1) == 1)
- ? AudioManager.RINGER_MODE_VIBRATE
- : AudioManager.RINGER_MODE_SILENT);
- } else {
- mAudioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
- }
- }
- public boolean showDuringKeyguard() {
- return true;
- }
- public boolean showBeforeProvisioning() {
- return false;
- }
- };
- 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 dialog
- Intent ecmDialogIntent =
- new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS, null);
- ecmDialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
- mContext.startActivity(ecmDialogIntent);
- } else {
- changeAirplaneModeSystemSetting(on);
- }
- }
- @Override
- protected void changeStateFromPress(boolean buttonOn) {
- // In ECM mode airplane state cannot be changed
- if (!(Boolean.parseBoolean(
- SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE)))) {
- mState = buttonOn ? State.TurningOn : State.TurningOff;
- mAirplaneState = mState;
- }
- }
- public boolean showDuringKeyguard() {
- return true;
- }
- public boolean showBeforeProvisioning() {
- return false;
- }
- };
- <span style="color:#ff0000;">mItems = Lists.newArrayList(
- // silent mode
- mSilentModeToggle,
- // next: airplane mode
- mAirplaneModeOn,
- // last: power off
- new SinglePressAction(
- com.android.internal.R.drawable.ic_lock_power_off,
- R.string.global_action_power_off) {
- </span><span style="color:#3333ff;"><u>public void onPress() {
- // shutdown by making sure radio and power are handled accordingly.
- ShutdownThread.shutdown(mContext, true);
- }</u></span><span style="color:#ff0000;">
- public boolean showDuringKeyguard() {
- return true;
- }
- public boolean showBeforeProvisioning() {
- return true;
- }</span>
- });
- mAdapter = new MyAdapter();
- final AlertDialog.Builder ab = new AlertDialog.Builder(mContext);
- ab.setAdapter(mAdapter, this)
- .setInverseBackgroundForced(true)
- .setTitle(R.string.global_actions);
- final AlertDialog dialog = ab.create();
- dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
- if (!mContext.getResources().getBoolean(
- com.android.internal.R.bool.config_sf_slowBlur)) {
- dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,
- WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
- }
- dialog.setOnDismissListener(this);
- return dialog;
- }
看看我們發現了什麼!!藍色的部分就是關機調用的函數了!!shutdown方法的第二個參數標識是否彈出詢問對話框。你可以選擇需要(true)或者不需要(false)。這裏我保守一點,還是選個true吧,萬一不小心按到關機鍵呢,呵呵。。。
也就是說,只要我們用
- <span style="color:#3333ff;">ShutdownThread.shutdown(mContext, true);</span>
替換掉前面的
- showGlobalActionsDialog();
就可以大功告成了!還等什麼!我們修改
- frameworks\policies\base\phone\com\android\internal\policy\impl\PhoneWindowManager.java
的源代碼如下:
- Runnable mPowerLongPress = new Runnable() {
- public void run() {
- mShouldTurnOffOnKeyUp = false;
- performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
- sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
- //showGlobalActionsDialog();
- ShutdownThread.shutdown(mContext, true);
- }
- };
好了,大功告成了!!
是不是就這樣完了呢?發現編譯不過。。。
細節很重要!!
原來ShutdownThread.shutdown(mContext, true)的引用包沒加進來!!幸好有gcc。。。
- import com.android.internal.app.ShutdownThread;
將上面這個包加到
- frameworks\policies\base\phone\com\android\internal\policy\impl\PhoneWindowManager.java
中,再次編譯,通過,YES!
看看我們的戰果吧:
是不是感覺到源碼定製的快感和成就感了呢?
這僅僅只是個開始,好戲還在後頭呢!!哈哈