A TaskDescription's primary color should be opaque

[xiaowei127]

java.lang.RuntimeException: Unable to start activity ComponentInfo{a21theone.tbm/com.leon.lfilepickerlibrary.ui.LFilePickerActivity}: java.lang.RuntimeException: A TaskDescription's primary color should be opaque at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2678) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2747) at android.app.ActivityThread.access$900(ActivityThread.java:187) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1585) at android.os.Handler.dispatchMessage(Handler.java:111) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5879) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1119) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:885) Caused by: java.lang.RuntimeException: A TaskDescription's primary color should be opaque at android.app.ActivityManager$TaskDescription.(ActivityManager.java:555) at android.app.Activity.onApplyThemeResource(Activity.java:3767) at android.view.ContextThemeWrapper.initializeTheme(ContextThemeWrapper.java:140) at android.view.ContextThemeWrapper.setTheme(ContextThemeWrapper.java:85) at android.support.v7.app.AppCompatActivity.setTheme(AppCompatActivity.java:90) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2624) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2747)  at android.app.ActivityThread.access$900(ActivityThread.java:187)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1585)  at android.os.Handler.dispatchMessage(Handler.java:111)  at android.os.Looper.loop(Looper.java:194)  at android.app.ActivityThread.main(ActivityThread.java:5879)  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:1119)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:885) 

[leonHua]

你的开发和项目环境是？项目的版本，主题是什么？光看这个错误看不出来，可以看看demo中的工程环境和你的哪里不一样