Android常用代码集合

获取view基于窗口中的坐标

private int[] getCoordinate(View view)

{

​	int[] location = new int[2];

​	view.getLocationOnScreen(location);

​	int x = localtion[0];

​	int y = location[1];	

​	Log.d("test","x:" + x + ",y:" + y);

​	return location;

}

获取屏幕的宽高

private void getWH(Context ctx)

{

​	WindowManager wm = (WindowManager)ctx.getSystemService(Context.WINDOW_SERVICE);

​	DisplayMetrics outMetrics = new DisplayMetrics();

​	wm.getDefaultDisplay().getRealMetrics(outMetrics);\

​	int width = outMetrics.widthPixels;

​	int height = outMetrics.heightPixels;

​	Log.d("test","width:" + width + ",height:" + height);

}

dp转px

private int dip2px(Context context, float dpValue)
{final float scale = context.getResources().getDisplayMetrics().density;
    return (int) (dpValue * scale + 0.5f);
}

px转dp

• 方法一

  public static int px2dip(Context context, int pxValue) 
  {
     return ((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, pxValue, 			                      context.getResources().getDisplayMetrics()));       
  }
  

• 方法二

  /**DisplayMetrics类中属性density*/
  public static int px2dip(Context context, float pxValue)
  {
      final float scale = context.getResources().getDisplayMetrics().density;
      return (int)(pxValue / scale + 0.5f);
  }
  

px转sp

/*** 将px值转换为sp值，保证文字大小不变* DisplayMetrics类中属性scaledDensity*/
public static int px2sp(Context context, float pxValue)
{
    final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
    return (int)(pxValue / fontScale + 0.5f);
}

sp转px

/*** 将sp值转换为px值，保证文字大小不变* DisplayMetrics类中属性scaledDensity*/
public static int sp2px(Context context, float spValue) 
{
    final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
    return (int)(spValue * fontScale + 0.5f);
}