private final void startActivityLocked(ActivityRecord r, boolean newTask,
boolean doResume, boolean keepCurTransition, Bundle options) {
final int NH = mHistory.size();
int addPos = -1;
if (!newTask) {
// If starting in an existing task, find where that is...
boolean startIt = true;
for (int i = NH-1; i >= 0; i--) {
ActivityRecord p = mHistory.get(i);
if (p.finishing) {
continue;
}
if (p.task == r.task) {
// Here it is! Now, if this is not yet visible to the
// user, then just add it without starting; it will
// get started when the user navigates back to it.
addPos = i+1;
if (!startIt) {
if (DEBUG_ADD_REMOVE) {
RuntimeException here = new RuntimeException("here");
here.fillInStackTrace();
Slog.i(TAG, "Adding activity " + r + " to stack at " + addPos,
here);
}
mHistory.add(addPos, r);
r.putInHistory();
mService.mWindowManager.addAppToken(addPos, r.appToken, r.task.taskId,
r.info.screenOrientation, r.fullscreen,
(r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0);
if (VALIDATE_TOKENS) {
validateAppTokensLocked();
}
ActivityOptions.abort(options);
return;
}
break;
}
if (p.fullscreen) {
startIt = false;
}
}
}
// Place a new activity at top of stack, so it is next to interact
// with the user.
if (addPos < 0) {
addPos = NH;
}
// If we are not placing the new activity frontmost, we do not want
// to deliver the onUserLeaving callback to the actual frontmost
// activity
if (addPos < NH) {
mUserLeaving = false;
if (DEBUG_USER_LEAVING) Slog.v(TAG, "startActivity() behind front, mUserLeaving=false");
}
// Slot the activity into the history stack and proceed
if (DEBUG_ADD_REMOVE) {
RuntimeException here = new RuntimeException("here");
here.fillInStackTrace();
Slog.i(TAG, "Adding activity " + r + " to stack at " + addPos, here);
}
mHistory.add(addPos, r);
r.putInHistory();
r.frontOfTask = newTask;
if (NH > 0) {
// We want to show the starting preview window if we are
// switching to a new task, or the next activity's process is
// not currently running.
boolean showStartingIcon = newTask;
ProcessRecord proc = r.app;
if (proc == null) {
proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid);
}
if (proc == null || proc.thread == null) {
showStartingIcon = true;
}
if (DEBUG_TRANSITION) Slog.v(TAG,
"Prepare open transition: starting " + r);
if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) {
mService.mWindowManager.prepareAppTransition(
AppTransition.TRANSIT_NONE, keepCurTransition);
mNoAnimActivities.add(r);
} else {
mService.mWindowManager.prepareAppTransition(newTask
? AppTransition.TRANSIT_TASK_OPEN
: AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition);
mNoAnimActivities.remove(r);
}
r.updateOptionsLocked(options);
mService.mWindowManager.addAppToken(
addPos, r.appToken, r.task.taskId, r.info.screenOrientation, r.fullscreen,
(r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0);
boolean doShow = true;
if (newTask) {
// Even though this activity is starting fresh, we still need
// to reset it to make sure we apply affinities to move any
// existing activities from other tasks in to it.
// If the caller has requested that the target task be
// reset, then do so.
if ((r.intent.getFlags()
&Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) {
resetTaskIfNeededLocked(r, r);
doShow = topRunningNonDelayedActivityLocked(null) == r;
}
}
if (SHOW_APP_STARTING_PREVIEW && doShow) {
// Figure out if we are transitioning from another activity that is
// "has the same starting icon" as the next one. This allows the
// window manager to keep the previous window it had previously
// created, if it still had one.
ActivityRecord prev = mResumedActivity;
if (prev != null) {
// We don't want to reuse the previous starting preview if:
// (1) The current activity is in a different task.
if (prev.task != r.task) prev = null;
// (2) The current activity is already displayed.
else if (prev.nowVisible) prev = null;
}
mService.mWindowManager.setAppStartingWindow(
r.appToken, r.packageName, r.theme,
mService.compatibilityInfoForPackageLocked(
r.info.applicationInfo), r.nonLocalizedLabel,
r.labelRes, r.icon, r.windowFlags,
prev != null ? prev.appToken : null, showStartingIcon);
}
} else {
// If this is the first activity, don't do any fancy animations,
// because there is nothing for it to animate on top of.
mService.mWindowManager.addAppToken(addPos, r.appToken, r.task.taskId,
r.info.screenOrientation, r.fullscreen,
(r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0);
ActivityOptions.abort(options);
}
if (VALIDATE_TOKENS) {
validateAppTokensLocked();
}
if (doResume) {
resumeTopActivityLocked(null);
}
}
