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当试图执行ShadowCanvas.getHeight(),我得到一个NullPointerException在ShadowWrangler.InvocationPlan.toString()Robolectric - ShadowCanvas - 上InvocationPlan.toString()NullPointerException异常
我的应用程序代码:
public float getCanvasHeight() {
return mCanvas.getHeight();
}
引发异常:
方法抛出'java.lang.NullPointerException'异常。不能 评估 com.xtremelabs.robolectric.bytecode.ShadowWrangler $ InvocationPlan.toString()
任何想法我做错了吗?