Example of obtaining the widget size and setting and adjusting the widget's position XY

Many people on the internet use view to set controls. setPadding (left, top, right, bottom) is actually a bad thing. It is used to set the offset of its own position. We seldom need this effect, set the position of the control relative to X and Y in the upper left corner of the screen. The crowd looked for him and looked back, but the man was in the dark! Copy codeThe Code is as follows: import android. view. View;
Import android. view. ViewGroup. MarginLayoutParams;
Import android. widget. RelativeLayout;
/*
* Obtain and set control information
*/
Public class WidgetController {
/*
* Obtain the control width.
*/
Public static int getWidth (View view)
{
Int w = View. MeasureSpec. makeMeasureSpec (0, View. MeasureSpec. UNSPECIFIED );
Int h = View. MeasureSpec. makeMeasureSpec (0, View. MeasureSpec. UNSPECIFIED );
View. measure (w, h );
Return (view. getMeasuredWidth ());
}
/*
* Control height
*/
Public static int getHeight (View view)
{
Int w = View. MeasureSpec. makeMeasureSpec (0, View. MeasureSpec. UNSPECIFIED );
Int h = View. MeasureSpec. makeMeasureSpec (0, View. MeasureSpec. UNSPECIFIED );
View. measure (w, h );
Return (view. getMeasuredHeight ());
}

/*
* Set the position X of the control without changing the width and height,
* X is the absolute position. In this case, Y may return to 0.
*/
Public static void setLayoutX (View view, int x)
{
MarginLayoutParams margin = new MarginLayoutParams (view. getLayoutParams ());
Margin. setMargins (x, margin. topMargin, x + margin. width, margin. bottomMargin );
RelativeLayout. LayoutParams layoutParams = new RelativeLayout. LayoutParams (margin );
View. setLayoutParams (layoutParams );
}
/*
* Set the position Y of the control without changing the width and height,
* Y indicates the absolute position. In this case, X may return to 0.
*/
Public static void setLayoutY (View view, int y)
{
MarginLayoutParams margin = new MarginLayoutParams (view. getLayoutParams ());
Margin. setMargins (margin. leftMargin, y, margin. rightMargin, y + margin. height );
RelativeLayout. LayoutParams layoutParams = new RelativeLayout. LayoutParams (margin );
View. setLayoutParams (layoutParams );
}
/*
* Set the position of the control to YY without changing the width and height,
* XY is the absolute position.
*/
Public static void setLayout (View view, int x, int y)
{
MarginLayoutParams margin = new MarginLayoutParams (view. getLayoutParams ());
Margin. setMargins (x, y, x + margin. width, y + margin. height );
RelativeLayout. LayoutParams layoutParams = new RelativeLayout. LayoutParams (margin );
View. setLayoutParams (layoutParams );
}
}