真机Android5.1调试
打开在线三维场景，在显示三维模型后通过scene.zoom(0.5);进行缩放时应用崩溃，下面是崩溃时打印的log:
E/libEGL: call to OpenGL ES API with no current context (logged once per thread)
A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 28030 (nrt.bim4project)
A/libc: Fatal signal 7 (SIGBUS), code 2, fault addr 0x88da6000 in tid 28098 (Thread-23185)
