SecurityException:权限拒绝：启动意图{act=android.Intent.action.MAIN cat=[android.Intent.category.HOME]

在我的应用程序中，当用户按back时，应用程序被最小化。这是onBackPressed（）方法

但是它告诉我这个错误，我不知道如何解决它。请帮我解决这个问题

这是错误日志

java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] cmp=com.android.customlockapp/.CustomLockLauncher } from ProcessRecord{41490d70 456:itpp.anubhabmassretail/u0a100} (pid=456, uid=10100) not exported from uid 10061
   at android.os.Parcel.readException(Parcel.java:1425)
   at android.os.Parcel.readException(Parcel.java:1379)
   at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1761)
   at android.app.Instrumentation.execStartActivity(Instrumentation.java:1411)
   at android.app.Activity.startActivityForResult(Activity.java:3351)
   at android.app.Activity.startActivityForResult(Activity.java:3312)
   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:839)
   at android.app.Activity.startActivity(Activity.java:3522)
   at android.app.Activity.startActivity(Activity.java:3490)
   at itpp.anubhabmassretail.MainActivity.onBackPressed(MainActivity.java:87)
   at android.app.Activity.onKeyUp(Activity.java:2131)
   at android.view.KeyEvent.dispatch(KeyEvent.java:2633)
   at android.app.Activity.dispatchKeyEvent(Activity.java:2361)
   at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchKeyEvent(ActionBarActivityDelegateICS.java:258)
   at    com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1823)
   at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3600)
   at android.view.ViewRootImpl.handleImeFinishedEvent(ViewRootImpl.java:3570)
   at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:2809)
   at android.os.Handler.dispatchMessage(Handler.java:99)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4794)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
   at dalvik.system.NativeStart.main(NativeStart.java)

---

你能解释一下为什么要启动主屏幕应用程序（但是你的logcat看起来像锁屏）而不是以下内容：用于后堆栈行为。因为我想最小化应用程序并显示主屏幕，所以我这样做。有没有其他有效的方法可以做到这一点？您是否阅读了链接？当用户从其他应用程序切换到您的应用程序并尝试返回时会发生什么情况。用户将去哪里，并且是否遵循Android导航模式：是的，兄弟，你是对的，那么还有其他方法吗？当用户按下后退按钮时，我应该怎么做？阅读链接。看看这个：找出什么样的后堆栈行为对你的应用程序有意义。祝你好运。

java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] cmp=com.android.customlockapp/.CustomLockLauncher } from ProcessRecord{41490d70 456:itpp.anubhabmassretail/u0a100} (pid=456, uid=10100) not exported from uid 10061
   at android.os.Parcel.readException(Parcel.java:1425)
   at android.os.Parcel.readException(Parcel.java:1379)
   at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1761)
   at android.app.Instrumentation.execStartActivity(Instrumentation.java:1411)
   at android.app.Activity.startActivityForResult(Activity.java:3351)
   at android.app.Activity.startActivityForResult(Activity.java:3312)
   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:839)
   at android.app.Activity.startActivity(Activity.java:3522)
   at android.app.Activity.startActivity(Activity.java:3490)
   at itpp.anubhabmassretail.MainActivity.onBackPressed(MainActivity.java:87)
   at android.app.Activity.onKeyUp(Activity.java:2131)
   at android.view.KeyEvent.dispatch(KeyEvent.java:2633)
   at android.app.Activity.dispatchKeyEvent(Activity.java:2361)
   at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchKeyEvent(ActionBarActivityDelegateICS.java:258)
   at    com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1823)
   at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3600)
   at android.view.ViewRootImpl.handleImeFinishedEvent(ViewRootImpl.java:3570)
   at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:2809)
   at android.os.Handler.dispatchMessage(Handler.java:99)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4794)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
   at dalvik.system.NativeStart.main(NativeStart.java)