添加back键返回主屏功能

Author: yuchuangu85

src/com/android/launcher3/Launcher.java

@@ -1725,6 +1725,8 @@ public void onBackPressed() {
  } else if (isInState(SPRING_LOADED)) {
  XLog.e(XLog.getTag(), XLog.TAG_GU_STATE + "is Normal----");
  mStateManager.goToState(NORMAL);
+ } else if (mWorkspace.getNextPage() != (hasCustomContentToLeft() ? 1 : 0)) {
+ mWorkspace.snapToPage(hasCustomContentToLeft() ? 1 : 0);
  } else {
  // Back button is a no-op here, but give at least some feedback for the button press
  mWorkspace.showOutlinesTemporarily();

src/com/android/launcher3/config/BaseFlags.java

@@ -60,7 +60,7 @@ abstract class BaseFlags {
  public static final boolean LAUNCHER3_CIRCLE_SCROLL = true;
 
  // 是否开启负一屏，当LAUNCHER_OVERLAY_ENABLED = false才起作用
- public static final boolean CUSTOM_CONTENT_ENABLED = false;
+ public static final boolean CUSTOM_CONTENT_ENABLED = true;
 
  // 是否开启跨进程的负一屏，如果开启，则不会开启CustomContent负一屏
  public static final boolean LAUNCHER_OVERLAY_ENABLED = false;