AndroidRuntime(419): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dream/com.dream.activity.YunXingChengXuActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content AndroidRuntime(419): java.lang.RuntimeExceptio
阅读背景：
android.util.AndroidRuntimeException: requestFeature() must be called before adding content
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