（4）Launcher客制化之 workspace长按事件弹出Widgets界面

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转帖请注明：来自http://blog.csdn.net/xufeifandj

同样修改lancher.java里面文件

OnLongclick事件，因为workspace注册了Launcher，OnLongClick事情。Launcher实现了长按的事件。

因此在注释掉，进入设置界面代码，替换为，跳转到 Widgets里面即可。直接看代码。

public boolean onLongClick(View v) {
if (!isDraggingEnabled()) return false;
if (isWorkspaceLocked()) return false;
if (mState != State.WORKSPACE) return false;
if (v instanceof Workspace) {
//修改长按显示widgets
showAllApps(true, AppsCustomizePagedView.ContentType.Widgets, true);
return true;
// if (!mWorkspace.isInOverviewMode()) {
// if (mWorkspace.enterOverviewMode()) {
// mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
// HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
//
// return true;
// } else {
// return false;
// }
// }
}

if (!(v instanceof CellLayout)) {
v = (View) v.getParent().getParent();
}

resetAddInfo();
CellLayout.CellInfo longClickCellInfo = (CellLayout.CellInfo) v.getTag();
// This happens when long clicking an item with the dpad/trackball
if (longClickCellInfo == null) {
return true;
}

// The hotseat touch handling does not go through Workspace, and we always allow long press
// on hotseat items.
final View itemUnderLongClick = longClickCellInfo.cell;
boolean allowLongPress = isHotseatLayout(v) || mWorkspace.allowLongPress();
if (allowLongPress && !mDragController.isDragging()) {
if (itemUnderLongClick == null) {
// User long pressed on empty space
// mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
// HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
// // Disabling reordering until we sort out some issues.
// if (mWorkspace.isInOverviewMode()) {
// mWorkspace.startReordering(v);
// } else {
// mWorkspace.enterOverviewMode();
// }
//修改长按显示widgets
showAllApps(true, AppsCustomizePagedView.ContentType.Widgets, true);

} else {
if (!(itemUnderLongClick instanceof Folder)) {
// User long pressed on an item
mWorkspace.startDrag(longClickCellInfo);
}
}
}
return true;
}

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