Normal application function program window. Public static final int TYPE_BASE_APPLICATION =1 The 'base' window of all program windows and other application windows are displayed on it.

Public static final int FIRST_APPLICATION_WINDOW = 1 It cannot be used in applications and requires special permissions to use. The value is between FIRST_SYSTEM_WINDOW and LAST_SYSTEM_WINDOW.

Īssociated with the top-level window, the token must be set to the token of the host window to which it is attached. The value is between FIRST_SUB_WINDOW and LAST_SUB_WINDOW. The token must be set to the activity token. It is the usual, top-level application window. The value is between FIRST_APPLICATION_WINDOW and LAST_APPLICATION_WINDOW. In other cases, the expansion space (pixels) will be divided equally by the widget. If it is 0, then the view cannot be stretched. In vertical/horizontal, how much expansion space (pixels) is reserved for the associated view. public float horizontalWeight publicfloat BOTTOM set, the y value represents the distance to a specific edge.ģ. If the gravity attribute is omitted, it represents the absolute Y position of the window. RIGHT set, the x value represents the distance to a specific edge. What is the gravity attribute? Simply put, it is how the window is docked. If the gravity attribute is omitted, then it represents the absolute X position of the window. Properties inherited from ViewManager.LayoutParams:Ĭonstants inherited from ViewManager.LayoutParams:ĭefinition of attributes and available constants Public static classWindowManager.LayoutParamsĮxtends ViewGroup.LayoutParams implements Parcelable In fact, the main content of WindowManager.java is composed of this class definition.

WindowManager.LayoutParams is a nested class of WindowManager interface inherited from ViewGroup.LayoutParams.

Android windowmanager layoutparams