Android：有没有办法获得屏幕尺寸？

Question

I'm making a puzzle app with animations. The animations look a lot faster on small screens then on larger screens. I'm assuming this is because on a larger screen they are moving a longer distance.

I was going to change the play back speed depending on the screen size. I cn get the screen size in pixcels is there a way to get it in dpi????

Answer 1

There is your answer: Get screen dimensions in pixels . This however, may not solve your problems. You should check your animation speeds, because I'm pretty sure, that it is not from the differences in the displays. You should post some code, for better help. Hope this helps.

Answer 2

If you want the the display dimensions in pixels you can use getSize :

Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;

If you're not in an Activity you can get the default Display via WINDOW_SERVICE :

WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();

Before getSize was introduced ( in API level 13 ), you could use the getWidth and getHeight methods that are now deprecated:

Display display = getWindowManager().getDefaultDisplay(); 
int width = display.getWidth();  // deprecated
int height = display.getHeight();  // deprecated

Referred from : How to get screen dimensions

Answer 3

Display display = getWindowManager().getDefaultDisplay();

int width = display.getWidth();
int height = display.getHeight();

OR

 Display display = getWindowManager().getDefaultDisplay();
 Point sSize = new Point();
 display.getSize(sSize);
 int width = sSize.x;
 int height = sSize.y;

Answer 4

you can use this:

 Display display = getWindowManager().getDefaultDisplay();
 Point sSize = new Point();
 display.getSize(sSize);
 int width = sSize.x;
 int height = sSize.y;

you can also use this for inches:

    float mXDpi;
    float mYDpi;
    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    mXDpi = metrics.xdpi; 
    mYDpi = metrics.ydpi;
    float  mMetersToPixelsX = mXDpi / 0.0254f; 
    float  mMetersToPixelsY = mYDpi / 0.0254f;