fixed renderTexture switch foreground to background issue.

cocos/2d/CCRenderTexture.cpp

@@ -35,6 +35,7 @@ THE SOFTWARE.
 #include "base/CCEventDispatcher.h"
 #include "renderer/CCRenderer.h"
 #include "2d/CCCamera.h"
+#include "renderer/CCTextureCache.h"
 
 NS_CC_BEGIN
 
@@ -87,7 +88,6 @@ void RenderTexture::listenToBackground(EventCustom *event)
 {
     // We have not found a way to dispatch the enter background message before the texture data are destroyed.
     // So we disable this pair of message handler at present.
-#if 0
 #if CC_ENABLE_CACHE_TEXTURE_DATA
     CC_SAFE_DELETE(_UITextureImage);
     
@@ -112,12 +112,10 @@ void RenderTexture::listenToBackground(EventCustom *event)
     glDeleteFramebuffers(1, &_FBO);
     _FBO = 0;
 #endif
-#endif
 }
 
 void RenderTexture::listenToForeground(EventCustom *event)
 {
-#if 0
 #if CC_ENABLE_CACHE_TEXTURE_DATA
     // -- regenerate frame buffer object and attach the texture
     glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_oldFBO);
@@ -135,7 +133,6 @@ void RenderTexture::listenToForeground(EventCustom *event)
     glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture->getName(), 0);
     glBindFramebuffer(GL_FRAMEBUFFER, _oldFBO);
 #endif
-#endif
 }
 
 RenderTexture * RenderTexture::create(int w, int h, Texture2D::PixelFormat eFormat)

cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxActivity.java

@@ -261,15 +261,13 @@ public abstract class Cocos2dxActivity extends Activity implements Cocos2dxHelpe
             Cocos2dxHelper.onResume();
             mGLSurfaceView.onResume();
         }
-        else {
-            Cocos2dxHelper.onPause();
-            mGLSurfaceView.onPause();
-        }
     }
 
     @Override
     protected void onPause() {
         super.onPause();
+        Cocos2dxHelper.onPause();
+        mGLSurfaceView.onPause();
     }
     
     @Override