My Android Advanced tour------The difference between Getlocationinwindow and Getlocationonscreen in >android

View . Getlocationinwindow (int[] location)

The coordinate position of a control in its parent form

View. Getlocationonscreen (int[] location)

The coordinate position of a control on its entire screen

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Getlocationinwindow is the coordinate of C, which is the origin of B.

Getlocationonscreen A as the Origin point.

The following is a sample Getlocationonscreen demo

Start = (Button) Findviewbyid (r.id.start); int []location=new int[2];start.getlocationonscreen (location); int x= location[0];//gets the horizontal axis of the current position int y=location[1];//Gets the ordinate of the current position

Below are Getlocationinwindow Demo sample

Start = (Button) Findviewbyid (r.id.start); int []location=new Int[2];start.getlocationinwindow (location); int x= location[0];//gets the horizontal axis of the current position int y=location[1];//Gets the ordinate of the current position

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Attach source code

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View . Getlocationinwindow (int[] location)

/** * <p>computes The coordinates of this view in its window. The argument * must is an array of both integers. After the method returns, the array * contains the X and y location in that order.</p> * * @param locati        On a array of integers in which to hold the coordinates */public void Getlocationinwindow (int[] location) {  if (location = = NULL | | Location.length < 2) {throw new IllegalArgumentException ("Location must is an        Array of integers "); if (Mattachinfo = = null) {//When the view isn't attached to a window, this method does not make Sen            Se location[0] = location[1] = 0;        Return        } float[] position = mattachinfo.mtmptransformlocation;        Position[0] = position[1] = 0.0f;        if (!hasidentitymatrix ()) {Getmatrix (). mappoints (position);        } position[0] + = Mleft;        POSITION[1] + = Mtop; Viewparent viewparent = MPaRent            while (viewparent instanceof view) {Final View view = (view) viewparent;            Position[0]-= VIEW.MSCROLLX;            POSITION[1]-= view.mscrolly;            if (!view.hasidentitymatrix ()) {View.getmatrix (). mappoints (position);            } position[0] + = View.mleft;            POSITION[1] + = View.mtop;         Viewparent = view.mparent;  } if (viewparent instanceof Viewrootimpl) {//*cough* final Viewrootimpl VR = (Viewrootimpl)            Viewparent;        POSITION[1]-= vr.mcurscrolly;        } location[0] = (int) (position[0] + 0.5f);    LOCATION[1] = (int) (position[1] + 0.5f); }

View. Getlocationonscreen (int[] location)

  /** * <p>computes The coordinates of this view in the screen     . The argument     * must is an array of both integers. After the method returns, the array     * contains the x and y location in that order.</p>     *     * @param locati On a array of integers in which to hold the coordinates     *    /public void Getlocationonscreen (int[] location) { C8/>getlocationinwindow (location);        Final Attachinfo info = mattachinfo;        if (info! = null) {            location[0] + = Info.mwindowleft;            LOCATION[1] + = Info.mwindowtop;        }    }

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Ouyangpeng welcome reprint, sharing with people is the source of progress!

Reprint please keep the original address : Http://blog.csdn.net/ouyang_peng

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My Android Advanced tour------The difference between Getlocationinwindow and Getlocationonscreen in >android