当我使用27和28版API在模拟器上运行我的应用程序时，一切对我都有效。 但是，当我尝试使用较低级别的API时，会在自定义Activity.java类中收到有关setContentView()方法的错误消息。
这是堆栈跟踪：
2018-12-06 15:37:59.166 9426-9426/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.mplexvr.ribbonracker, PID: 9426
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mplexvr.ribbonracker/com.mplexvr.ribbonracker.RibbonRackerActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f0b0000
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f0b0000
at android.content.res.ResourcesImpl.getValue(ResourcesImpl.java:190)
at android.content.res.Resources.getDrawable(Resources.java:766)
at android.content.Context.getDrawable(Context.java:525)
at com.android.internal.widget.ToolbarWidgetWrapper.setIcon(ToolbarWidgetWrapper.java:322)
at com.android.internal.widget.ActionBarOverlayLayout.setIcon(ActionBarOverlayLayout.java:737)
at com.android.internal.policy.PhoneWindow.setDefaultIcon(PhoneWindow.java:1737)
at android.app.Activity.initWindowDecorActionBar(Activity.java:2400)
at android.app.Activity.setContentView(Activity.java:2415)
at com.mplexvr.ribbonracker.RibbonRackerActivity.onCreate(RibbonRackerActivity.java:46)
at android.app.Activity.performCreate(Activity.java:6662)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
我试图使用版本为24的api在手机和仿真器上都运行此应用程序，但没有任何效果。 onCreate()方法尝试调用的我的activity_main.xml仅包含两个在onCreate()方法中修改的片段。 这是其中的一段代码：
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
images = new ArrayList<>();
imageNames = new ArrayList<>();
setContentView(R.layout.activity_main);
Log.v(TAG, "I got in onCreate");
//Create the fragment for the ranking and add it to the current view
// Get references to the TitleFragment and to the QuotesFragment containers
mRibbonFrameLayout = findViewById(R.id.ribbon_fragment_container);
mChecklistFrameLayout = findViewById(R.id.checkbox_fragment_container);
...
}
我尝试查找此问题，但没有发现任何解决问题的方法-至少是公开解决的。
UPDATE在5分钟内解决了问题，当我发现某个文件夹的版本为26，这将限制使用该版本。