Android获取并设置手机窗口大小getScreenSize()

public static intSCREEN_WIDTH= -1;
public static intSCREEN_HEIGHT= -1;
public static floatDIMEN_RATE= -1.0F;
public static intDIMEN_DPI= -1;

public void getScreenSize() {

WindowManager  windowManager = (WindowManager)this.getSystemService(Context.WINDOW_SERVICE);

DisplayMetrics dm = new DisplayMetrics();

Displaydisplay = windowManager.getDefaultDisplay();

display.getMetrics(dm);

DIMEN_RATE= dm.density/1.0F;

DIMEN_DPI= dm.densityDpi;

SCREEN_WIDTH= dm.widthPixels;

SCREEN_HEIGHT= dm.heightPixels;

if(SCREEN_WIDTH>SCREEN_HEIGHT) {

int t =SCREEN_HEIGHT;

SCREEN_HEIGHT=SCREEN_WIDTH;

SCREEN_WIDTH= t;

}

}