Android——工具类（屏幕尺寸、sp转换为px、dp转换为px）

public class ScreenUtil {
public static DisplayMetrics getScreenSize(Context context) {
WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
manager.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics;
}

public static int dp2px(Context context, float dp) {
DisplayMetrics metrics =  context.getResources().getDisplayMetrics();
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, metrics);
}

public static int sp2px(Context context, float sp) {
DisplayMetrics metrics =  context.getResources().getDisplayMetrics();
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, metrics);
}
}