原生Android4.0来电按钮消失的有关问题

@@ -226,12 +226,19 @@ public class InCallTouchUi extends FrameLayout         View.OnTouchListener smallerHitTargetTouchListener = new SmallerHitTarg         mEndButton.setOnTouchListener(smallerHitTargetTouchListener);     }+    /**+     * Updates the visibility and/or state of our UI elements, based on+     * the current state of the phone.+     */+    final void updateState(CallManager cm) {+        updateState(cm,false);+    }      /**      * Updates the visibility and/or state of our UI elements, based on      * the current state of the phone.      */-    void updateState(CallManager cm) {+    void updateState(CallManager cm, boolean force) {         if (mInCallScreen == null) {             log("- updateState: mInCallScreen has been destroyed; bailing out..")             return;@@ -270,7 +277,7 @@ public class InCallTouchUi extends FrameLayout             // within the last 500 msec, *don't* show the incoming call             // UI even if the phone is still in the RINGING state.             long now = SystemClock.uptimeMillis();-            if (now < mLastIncomingCallActionTime + 500) {+            if ((!force) && (now < mLastIncomingCallActionTime + 500)) {                 log("updateState: Too soon after last action; not drawing!");                 showIncomingCallControls = false;             }

@@ -156,8 +156,9 @@ public class InCallScreen extends Activity     private static final int EVENT_PAUSE_DIALOG_COMPLETE = 120;     private static final int EVENT_HIDE_PROVIDER_OVERLAY = 121;  // Time to rem     private static final int REQUEST_UPDATE_SCREEN = 122;-    private static final int PHONE_INCOMING_RING = 123;-    private static final int PHONE_NEW_RINGING_CONNECTION = 124;+    private static final int REQUEST_FORCE_UPDATE_SCREEN = 123;+    private static final int PHONE_INCOMING_RING = 124;+    private static final int PHONE_NEW_RINGING_CONNECTION = 125;      // When InCallScreenMode is UNDEFINED set the default action     // to ACTION_UNDEFINED so if we are resumed the activity will@@ -417,6 +418,9 @@ public class InCallScreen extends Activity                     updateScreen();                     break;+                case REQUEST_FORCE_UPDATE_SCREEN:+                    updateScreen(true);+                    break;                 case PHONE_INCOMING_RING:                     onIncomingRing();                     break;@@ -2172,7 +2176,21 @@ public class InCallScreen extends Activity          mWildPromptText.requestFocus();     }-+     /**+     * Updates the state of the in-call UI based on the current state of+     * the Phone.  This call has no effect if we're not currently the+     * foreground activity.+     *+     * This method is only allowed to be called from the UI thread (since it+     * manipulates our View hierarchy).  If you need to update the screen from+     * some other thread, or if you just want to "post a request" for the scree+     * to be updated (rather than doing it synchronously), call+     * requestUpdateScreen() instead.+     */+     final private void updateScreen()+     {+        updateScreen(false);+     }     /**      * Updates the state of the in-call UI based on the current state of      * the Phone.  This call has no effect if we're not currently the@@ -2184,7 +2202,7 @@ public class InCallScreen extends Activity      * to be updated (rather than doing it synchronously), call      * requestUpdateScreen() instead.      */-    private void updateScreen() {+    private void updateScreen(boolean force) {         if (DBG) log("updateScreen()...");         final InCallScreenMode inCallScreenMode = mApp.inCallUiState.inCallScre         if (VDBG) {@@ -2245,7 +2263,7 @@ public class InCallScreen extends Activity         // Note we update the InCallTouchUi widget before the CallCard,         // since the CallCard adjusts its size based on how much vertical         // space the InCallTouchUi widget needs.-        updateInCallTouchUi();+        updateInCallTouchUi(force);         mCallCard.updateState(mCM);         updateDialpadVisibility();         updateProviderOverlay();@@ -3925,13 +3943,18 @@ public class InCallScreen extends Activity         mRespondViaSmsManager = new RespondViaSmsManager();         mRespondViaSmsManager.setInCallScreenInstance(this);     }-     /**      * Updates the state of the in-call touch UI.      */-    private void updateInCallTouchUi() {+    final private void updateInCallTouchUi() {+        updateInCallTouchUi(false);+    }+    /**+     * Updates the state of the in-call touch UI.+     */+    private void updateInCallTouchUi(boolean force) {         if (mInCallTouchUi != null) {-            mInCallTouchUi.updateState(mCM);+            mInCallTouchUi.updateState(mCM,force);         }     } @@ -3941,7 +3964,6 @@ public class InCallScreen extends Activity     /* package */ InCallTouchUi getInCallTouchUi() {         return mInCallTouchUi;     }-     /**      * Posts a handler message telling the InCallScreen to refresh the      * onscreen in-call UI.@@ -3958,7 +3980,23 @@ public class InCallScreen extends Activity         mHandler.removeMessages(REQUEST_UPDATE_SCREEN);         mHandler.sendEmptyMessage(REQUEST_UPDATE_SCREEN);     }-+    /**+     * Posts a handler message telling the InCallScreen to force refresh the+     * onscreen in-call UI.+     *+     * This is just a wrapper around updateScreen(true), for use by the+     * rest of the phone app or from a thread other than the UI thread.+     *+     * updateScreen() is a no-op if the InCallScreen is not the foreground+     * activity, so it's safe to call this whether or not the InCallScreen+     * is currently visible.+     */+    /* package */ void requestForceUpdateScreen() {+        if (DBG) log("requestForceUpdateScreen()...");+        mHandler.removeMessages(REQUEST_UPDATE_SCREEN);+       mHandler.removeMessages(REQUEST_FORCE_UPDATE_SCREEN);+        mHandler.sendEmptyMessage(REQUEST_FORCE_UPDATE_SCREEN);+    }     /**      * @return true if it's OK to display the in-call touch UI, given the      * current state of the InCallScreen.

@@ -281,7 +281,7 @@ public class RespondViaSmsManager {             // update itself based on the current telephony state.             // (Assuming the incoming call is still ringing, this will             // cause the incoming call widget to reappear.)-            mInCallScreen.requestUpdateScreen();+            mInCallScreen.requestForceUpdateScreen();         }     }