如何从可绘制的文件夹中获取资源 - and Engine

Question

我正在研究游戏，我想设置游戏的布局，以便在多个设备屏幕上工作。因此，而不是从中获取图像 asset's folder, ，我正在寻找某种方法来从 drawable folder. 。因此，稍后我可以根据设备的屏幕获取图像。

更新：

我尝试了它

mFaceTextureRegionLifeLine = (TiledTextureRegion) TextureRegionFactory.createFromResource(mTextureLifeLine, this, R.drawable.icon, 100, 100);

而且，它向我解雇了，下面的错误 -

09-05 19:02:38.923: ERROR/AndroidRuntime(4161): FATAL EXCEPTION: main
09-05 19:02:38.923: ERROR/AndroidRuntime(4161): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.engine/com.engine.BallDemo}: java.lang.ClassCastException: org.anddev.andengine.opengl.texture.region.TextureRegion
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.os.Handler.dispatchMessage(Handler.java:99)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.os.Looper.loop(Looper.java:123)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread.main(ActivityThread.java:4627)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at java.lang.reflect.Method.invokeNative(Native Method)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at java.lang.reflect.Method.invoke(Method.java:521)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at dalvik.system.NativeStart.main(Native Method)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161): Caused by: java.lang.ClassCastException: org.anddev.andengine.opengl.texture.region.TextureRegion
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at com.engine.BallDemo.onLoadResources(BallDemo.java:132)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at org.anddev.andengine.ui.activity.BaseGameActivity.onCreate(BaseGameActivity.java:57)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-05 19:02:38.923: ERROR/AndroidRuntime(4161):     ... 11 more

因此，如果有可能，请告诉我。谢谢，苏里·萨哈尼。

Answer 1

这是将为您做到这一点的方法：

public static TextureRegion createFromResource(final Texture pTexture, final Context pContext, final int pDrawableResourceID, final int pTexturePositionX, final int pTexturePositionY)

如果您需要创建瓷砖纹理区域，请使用以下方式：

public static TiledTextureRegion createTiledFromResource(final Texture pTexture, final Context pContext, final int pDrawableResourceID, final int pTexturePositionX, final int pTexturePositionY, final int pTileColumns, final int pTileRows)

希望这可以帮助。

Answer 2

如果您只是指定drawble ID（例如 R.drawable.icon）然后根据您的设备，它将从文件夹中拉出 /res/ 最适合该设备：

IE，

/res/drawable/icon.png 
/res/drawable-large/icon.png

意味着大型设备使用了第二个PNG。

有关更多信息，请参见Android网站 支持多个屏幕.

Answer 3

如果要从可绘制的文件夹中获取图像，则应尝试此 - >>

Context ctx = getApplicationContext();
Resources r = ctx.getResources();
Drawable d = r.getDrawable(R.drawable.image_name);