动画
- Window 动画
- 过渡动画
- View 动画
窗口动画
在Android系统中，窗口动画的本质就是对原始窗口施加一个变换（Transformation）。 在线性数学中，对物体的形状进行变换是通过乘以一个矩阵（Matrix）来实现，目的就是对物体进行偏移、旋转、缩放、切变、反射和投影等。 因此，给窗口设置动画实际上就给窗口设置一个变换矩阵（Transformation Matrix）。
窗口动画类型
public interface WindowManager extends ViewManager {
/**
* Not set up for a transition.
* @hide
*/
int TRANSIT_UNSET = -1;
/**
* No animation for transition.
* @hide
*/
int TRANSIT_NONE = 0; // 无过渡动画
/**
* A window in a new activity is being opened on top of an existing one in the same task.
* @hide
*/
int TRANSIT_ACTIVITY_OPEN = 6; // 在同一task中在最顶端打开一个窗口
/**
* The window in the top-most activity is being closed to reveal the previous activity in the
* same task.
* @hide
*/
int TRANSIT_ACTIVITY_CLOSE = 7; // 关闭当前活动窗口，恢复同一个task中的上一个窗口
/**
* A window in a new task is being opened on top of an existing one in another activity's task.
* @hide
*/
int TRANSIT_TASK_OPEN = 8; // 新建任务并创建窗口
/**
* A window in the top-most activity is being closed to reveal the previous activity in a
* different task.
* @hide
*/
int TRANSIT_TASK_CLOSE = 9; // 关闭当前活动窗口，回到上一个任务
/**
* A window in an existing task is being displayed on top of an existing one in another
* activity's task.
* @hide
*/
int TRANSIT_TASK_TO_FRONT = 10; // 将任务移至最顶
/**
* A window in an existing task is being put below all other tasks.
* @hide
*/
int TRANSIT_TASK_TO_BACK = 11; // 将当前任务移至最末
/**
* A window in a new activity that doesn't have a wallpaper is being opened on top of one that
* does, effectively closing the wallpaper.
* @hide
*/
int TRANSIT_WALLPAPER_CLOSE = 12; // 关闭壁纸应用
/**
* A window in a new activity that does have a wallpaper is being opened on one that didn't,
* effectively opening the wallpaper.
* @hide
*/
int TRANSIT_WALLPAPER_OPEN = 13; // 启动壁纸应用
/**
* A window in a new activity is being opened on top of an existing one, and both are on top
* of the wallpaper.
* @hide
*/
int TRANSIT_WALLPAPER_INTRA_OPEN = 14; // 有壁纸打开
/**
* The window in the top-most activity is being closed to reveal the previous activity, and
* both are on top of the wallpaper.
* @hide
*/
int TRANSIT_WALLPAPER_INTRA_CLOSE = 15; // 有壁纸关闭
/**
* A window in a new task is being opened behind an existing one in another activity's task.
* The new window will show briefly and then be gone.
* @hide
*/
int TRANSIT_TASK_OPEN_BEHIND = 16;
/**
* A window in a task is being animated in-place.
* @hide
*/
int TRANSIT_TASK_IN_PLACE = 17;
/**
* An activity is being relaunched (e.g. due to configuration change).
* @hide
*/
int TRANSIT_ACTIVITY_RELAUNCH = 18; // Activity 重新加载
/**
* A task is being docked from recents.
* @hide
*/
int TRANSIT_DOCK_TASK_FROM_RECENTS = 19;
/**
* Keyguard is going away.
* @hide
*/
int TRANSIT_KEYGUARD_GOING_AWAY = 20;
/**
* Keyguard is going away with showing an activity behind that requests wallpaper.
* @hide
*/
int TRANSIT_KEYGUARD_GOING_AWAY_ON_WALLPAPER = 21;
/**
* Keyguard is being occluded.
* @hide
*/
int TRANSIT_KEYGUARD_OCCLUDE = 22;
/**
* Keyguard is being unoccluded.
* @hide
*/
int TRANSIT_KEYGUARD_UNOCCLUDE = 23;
/**
* A translucent activity is being opened.
* @hide
*/
int TRANSIT_TRANSLUCENT_ACTIVITY_OPEN = 24;
/**
* A translucent activity is being closed.
* @hide
*/
int TRANSIT_TRANSLUCENT_ACTIVITY_CLOSE = 25;
/**
* A crashing activity is being closed.
* @hide
*/
int TRANSIT_CRASHING_ACTIVITY_CLOSE = 26;
}
