android studio出现这个错误如图：android failed to instantiate one or more classes

[a1592187525]

[a1592187525]

这个错误如何解决？

[a1592187525]

引用 2 楼 z979451341 的回复:

Build——》ReBuild Project

还是不行，下面有显示这个： The following classes could not be instantiated: - android.support.v7.widget.AppCompatTextView (Open Class, Show Exception, Clear Cache) Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE. If this is an unexpected error you can also try to build the project, then manually refresh the layout. Exception Details java.lang.NullPointerException   at android.content.res.Resources_Delegate.getValue(Resources_Delegate.java:788)   at android.content.res.Resources.getValue(Resources.java:1286)   at android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.java:335)   at android.support.v4.content.res.ResourcesCompat.getFont(ResourcesCompat.java:314)   at android.support.v7.widget.TintTypedArray.getFont(TintTypedArray.java:118)   at android.support.v7.widget.AppCompatTextHelper.updateTypefaceAndStyle(AppCompatTextHelper.java:234)   at android.support.v7.widget.AppCompatTextHelper.loadFromAttributes(AppCompatTextHelper.java:165)   at android.support.v7.widget.AppCompatTextHelperV17.loadFromAttributes(AppCompatTextHelperV17.java:38)   at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:82)   at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:72)   at java.lang.reflect.Constructor.newInstance(Constructor.java:423)   at android.view.LayoutInflater.onCreateView(LayoutInflater.java:717)   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:785)   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:858)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)   at android.view.LayoutInflater.inflate(LayoutInflater.java:492)   at com.android.layoutlib.bridge.bars.CustomBar.<init>(CustomBar.java:95)   at com.android.layoutlib.bridge.bars.StatusBar.<init>(StatusBar.java:67)   at com.android.layoutlib.bridge.impl.Layout.createStatusBar(Layout.java:224)   at com.android.layoutlib.bridge.impl.Layout.<init>(Layout.java:146) Copy stack to clipboard

[x443137254]

我只想知道为何你们出的错提示都这么详细...

[键盘舞者113]

Build——》ReBuild Project

[十二月的消亡]

没有编译，这个不用管，到时候写完了整个一起编译的，你也可以先build

[a1qwertyuiop1]

显示的这个错误如何解决

[zycxnanwang]

Exception Details java.lang.NullPointerException at android.content.res.Resources_Delegate.getValue(Resources_Delegate.java:788) 我看你的出错记录， 可能是空引用问题！ 仔细看一下出错提示， 找出问题关键！