如何在android中以编程方式获得屏幕大小

Question

Android将屏幕尺寸定义为普通的大屏幕等。

它会自动选择适当文件夹中的静态资源。我需要这个数据关于当前设备在我的java代码。DisplayMetrics仅提供有关当前设备密度的信息。没有关于屏幕大小可用。

我确实在grep代码中找到了屏幕大小枚举，但是这对我来说似乎不适用于4.0 SDK。有办法得到这些信息吗？

Answer 1

确定屏幕大小：

int screenSize = getResources().getConfiguration().screenLayout &Configuration.SCREENLAYOUT_SIZE_MASK;
  switch(screenSize) {
      case Configuration.SCREENLAYOUT_SIZE_LARGE:
        Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
         break;
       case Configuration.SCREENLAYOUT_SIZE_NORMAL:
          Toast.makeText(this, "Normal screen",Toast.LENGTH_LONG).show();
           break;
       case Configuration.SCREENLAYOUT_SIZE_SMALL:
           Toast.makeText(this, "Small screen",Toast.LENGTH_LONG).show();
           break;
       default:
           Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();

 }

确定密度：

int density= getResources().getDisplayMetrics().densityDpi;
   switch(density)
  {
  case DisplayMetrics.DENSITY_LOW:
     Toast.makeText(context, "LDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_MEDIUM:
       Toast.makeText(context, "MDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_HIGH:
      Toast.makeText(context, "HDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_XHIGH:
       Toast.makeText(context, "XHDPI", Toast.LENGTH_SHORT).show();
      break;
  }

参考：http://devl-android.blogspot.in/2013/10/wifi-connectivity-and-hotspot-in-android.html

Answer 2

private static String getScreenResolution(Context context)
{
    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    DisplayMetrics metrics = new DisplayMetrics();
    display.getMetrics(metrics);
    int width = metrics.widthPixels;
    int height = metrics.heightPixels;

    return "{" + width + "," + height + "}";
}

Answer 3

将此代码复制并粘贴到您的活动中，当执行此代码时，它将Toast设备的屏幕大小类别。

int screenSize = getResources().getConfiguration().screenLayout &
        Configuration.SCREENLAYOUT_SIZE_MASK;

String toastMsg;
switch(screenSize) {
    case Configuration.SCREENLAYOUT_SIZE_LARGE:
        toastMsg = "Large screen";
        break;
    case Configuration.SCREENLAYOUT_SIZE_NORMAL:
        toastMsg = "Normal screen";
        break;
    case Configuration.SCREENLAYOUT_SIZE_SMALL:
        toastMsg = "Small screen";
        break;
    default:
        toastMsg = "Screen size is neither large, normal or small";
}
Toast.makeText(this, toastMsg, Toast.LENGTH_LONG).show();