android关于getLayoutParams()方法源码译文（部分）

getLayoutParams()

/**

* Get the LayoutParams associated with this view. All views should have

* layout parameters. These supply parameters to the <i>parent</i> of this

* view specifying how it should be arranged. There are many subclasses of

* ViewGroup.LayoutParams, and these correspond to the different subclasses

* of ViewGroup that are responsible for arranging their children.

* This method may return null if this View is not attached to a parent

* ViewGroup or {@link #setLayoutParams(android.view.ViewGroup.LayoutParams)}

* was not invoked successfully. When a View is attached to a parent

* ViewGroup, this method must not return null.

* @return The LayoutParams associated with this view, or null if no

* parameters have been set yet

译文：得到与之相关联的view的布局参数。所有的view都应该有一个布局参数。这些特定view的参数会被应用到父布局里面指定view应该如何进行布局。这里有许多视图组布局参数的子类，并且这些不同视图组子类之间的通信负责安排她们的字空间。

@ViewDebug.ExportedProperty(deepExport = true, prefix = "layout_")

public ViewGroup.LayoutParams getLayoutParams() {

return mLayoutParams;

}

getLayoutParams().height

/**

* Information about how tall the view wants to be. Can be one of the

* constants FILL_PARENT (replaced by MATCH_PARENT

* in API Level 8) or WRAP_CONTENT, or an exact size.

@ViewDebug.ExportedProperty(category = "layout", mapping = {

@ViewDebug.IntToString(from = MATCH_PARENT, to = "MATCH_PARENT"),

@ViewDebug.IntToString(from = WRAP_CONTENT, to = "WRAP_CONTENT")

})

public int height;

getLayoutParams().width

/**

* Information about how wide the view wants to be. Can be one of the

* constants FILL_PARENT (replaced by MATCH_PARENT

* in API Level 8) or WRAP_CONTENT, or an exact size.

@ViewDebug.ExportedProperty(category = "layout", mapping = {

@ViewDebug.IntToString(from = MATCH_PARENT, to = "MATCH_PARENT"),

@ViewDebug.IntToString(from = WRAP_CONTENT, to = "WRAP_CONTENT")

})

public int width;

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