blockly for android app 安装闪退

  java.lang.RuntimeException: Unable to start activity ComponentInfo{app.robo.com.roboapp/app.robo.com.roboapp.MainActivity}:
  java.lang.IllegalStateException: Failed to load toolbox XML.
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2521)
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2595)
      at android.app.ActivityThread.access$800(ActivityThread.java:178)
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1470)
      at android.os.Handler.dispatchMessage(Handler.java:111)
      at android.os.Looper.loop(Looper.java:194)
      at android.app.ActivityThread.main(ActivityThread.java:5631)
      at java.lang.reflect.Method.invoke(Native Method)
      at java.lang.reflect.Method.invoke(Method.java:372)
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:959)
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)

Caused by: java.lang.IllegalStateException: Failed to load toolbox XML. 解决方案：查看

//获得代码块定义json文件
protected List<String> getBlockDefinitionsJsonPaths() {
    return Arrays.asList(new String[] {
            "default/loop_blocks.json",
            "default/math_blocks.json",
            "default/variable_blocks.json",
            "default/colour_blocks.json",
            "default/list_blocks.json",
            "default/logic_blocks.json",
            "default/test_blocks.json",
            "default/text_blocks.json",
            "default/procedures.json"
    });
}

方法中是否都有声明所需块文件