Android Development: Scale to fit different devices

Question

Im making a game and using surfaceview. I load bitmaps that represent character and background and so on.

But HOW do I properly scale it to fit large devices and small devices and other devices?

//Simon

NOTE* dpi wont work, only pixels work whhen using canvas

Answer 1

You can implement a helper method that you can use to request calculations based on the device's dpi.

Based on @MitulNakum answer from this qustion, do this:

//note that mdpi is the standard
float getAdjustedDimension(float value){
    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    switch(metrics.densityDpi){
         case DisplayMetrics.DENSITY_LOW:
              //api 4 and higher
              return 0.75 * value;
         case DisplayMetrics.DENSITY_MEDIUM:
              //api 4 and higher
              return value;
         case DisplayMetrics.DENSITY_HIGH:
              //api 4 and higher
              return value * 1.25;
         case DisplayMetrics.DENSITY_XHIGH
              //api 9 and higher
              return value * 2;
         case DisplayMetrics.DENSITY_TV
              //api 13 and higher
              return value * 1.33125;
    }
}