【Android】An activity without a UI must call finish() before onResume() complete

来源：互联网发布：mac磁盘被锁定编辑：程序博客网时间：2024/05/04 04:31

今天遇到这样的一个bug，我的测试机是Android 7.0，经过追踪得到一下关键出错信息：

An activity without a UI must call finish() before onResume() completes

很明显这是因为当前的activity没有UI造成的，通过查看源码发现这个问题在6.0之前不存在，在6.0之后google对着快做了强制要求，下面是

Android 6.0相应的源码：

final void performResume() {    performRestart();    mFragments.execPendingActions();    mLastNonConfigurationInstances = null;    mCalled = false;    // mResumed is set by the instrumentation    mInstrumentation.callActivityOnResume(this);    if (!mCalled) {       throw new SuperNotCalledException(           "Activity " + mComponent.toShortString() +           " did not call through to super.onResume()");    }    // invisible activities must be finished before onResume() completes    if (!mVisibleFromClient && !mFinished) {        Log.w(TAG, "An activity without a UI must call finish() before onResume() completes");        if (getApplicationInfo().targetSdkVersion                > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) {            throw new IllegalStateException(                   "Activity " + mComponent.toShortString() +                   " did not call finish() prior to onResume() completing");       }   }   // Now really resume, and install the current status bar and menu.   mCalled = false;   mFragments.dispatchResume();   mFragments.execPendingActions();   onPostResume();   if (!mCalled) {       throw new SuperNotCalledException(           "Activity " + mComponent.toShortString() +           " did not call through to super.onPostResume()");    }}

16行就是打出的出错日志

知道为什么出错后解决这个问题就不难了，既然我的activity是没有UI的，出错的activity主题的配置如下：

<activity android:name=".DialogActivity"     ...    android:theme="@android:style/Theme.NoDisplay/>

这个一个没有UI的主题，为了解决问题，只需要将主题改成透明的即可，ps：记住透明不等于没有UI哦，如下所示：

<activity android:name=".DialogActivity"     ...    android:theme="@android:style/Theme.Translucent.NoTitleBar"/>

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