解决 java.lang.RuntimeException: Unable to start activity ComponentInfo{...}

错误信息：

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.express_delivery, PID: 22103
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.express_delivery/com.example.express_delivery.sms.HomeActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x0
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3499)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3653)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:151)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:111)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2224)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:238)
        at android.app.ActivityThread.main(ActivityThread.java:7813)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
     Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x0
        at android.content.res.ResourcesImpl.getValue(ResourcesImpl.java:254)
        at android.content.res.Resources.loadXmlResourceParser(Resources.java:2296)
        at android.content.res.Resources.getLayout(Resources.java:1183)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:532)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
        at com.example.express_delivery.sms.PrivacyDialog.<init>(PrivacyDialog.java:50)
        at com.example.express_delivery.sms.HomeActivity.onCreate(HomeActivity.java:77)
        at android.app.Activity.performCreate(Activity.java:7961)
        at android.app.Activity.performCreate(Activity.java:7950)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3474)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3653) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:151) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:111) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2224) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:238) 
        at android.app.ActivityThread.main(ActivityThread.java:7813) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995) 

 

 

解决：

看到图中亮蓝色的字（这个是我们自己代码的错误），然后我就点击了这两个，最后发现下面这个我当初是引用的上边的，所以错误主要在PrivacyDialog.java文件里

我按提示定位到了错误的地方：

 

图中浅黄色的这一行，当时我就纳闷，这个smsdemo_authorize_dialog是什么？

然后就定位这个方法 getLayoutRes，想找到这个参数是什么

 

函数是长这样的，是一个layout的名字，我当时是想可能还有一个layout的xml文件没有添加，然后发现果然是（因为我这个也是参考的demo）

添加上之后，就不报错了

完结