android - 最も人気のあるdpi値

Question

最も人気のあるデバイスのdpi仕様はどこにありますか？ImageViewがdp値でパラメーター化されているレイアウトがあり、任意のデバイスに最適なものを提供するために、特定のピクセルパラメーターを指定して必要な画像を生成できるサーバーがあります。

したがって、px = dp * (dpi / 160)サーバーのピクセルデータを計算するために、最も一般的なdpiバリアントを定義する必要があります。

ありがとう。

Answer 1

実際には、必要な正確なサイズでサーバーにクエリを実行できます。

float pixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, intContainingYourDPs, getResources().getDisplayMetrics());

Answer 2

//これらはGoogleAPIがサポートしている唯一の密度です。

デバイスメーカーは、デバイスに独自の密度を提供できます

ギャラクシー3がそうであると仮定しますが306 dpi、アンドロイドはそれを306/160=1.9

したがってDENSITY_XHIGH、xhdpiからリソースを取得します。

public static final int DENSITY_DEFAULT
Since: API Level 4
The reference density used throughout the system.
Constant Value: 160 (0x000000a0)

public static final int DENSITY_HIGH
Since: API Level 4
Standard quantized DPI for high-density screens.
Constant Value: 240 (0x000000f0)

public static final int DENSITY_LOW
Since: API Level 4
Standard quantized DPI for low-density screens.
Constant Value: 120 (0x00000078)

public static final int DENSITY_MEDIUM
Since: API Level 4
Standard quantized DPI for medium-density screens.
Constant Value: 160 (0x000000a0)

public static final int DENSITY_TV
Since: API Level 13
This is a secondary density, added for some common screen configurations. It is recommended that applications not generally target this as a first class density -- that is, don't supply specific graphics for this density, instead allow the platform to scale from other densities (typically DENSITY_HIGH) as appropriate. In most cases (such as using bitmaps in Drawable) the platform can perform this scaling at load time, so the only cost is some slight startup runtime overhead.

This density was original introduced to correspond with a 720p TV screen: the density for 1080p televisions is DENSITY_XHIGH, and the value here provides the same UI size for a TV running at 720p. It has also found use in 7" tablets, when these devices have 1280x720 displays.    
Constant Value: 213 (0x000000d5)

public static final int DENSITY_XHIGH
Since: API Level 9
Standard quantized DPI for extra-high-density screens.
Constant Value: 320 (0x00000140)

public static final int DENSITY_XXHIGH
Since: API Level 16
Standard quantized DPI for extra-extra-high-density screens. Applications should not generally worry about this density; relying on XHIGH graphics being scaled up to it should be sufficient for almost all cases.
Constant Value: 480 (0x000001e0)