android-exceptions

android.content.ActivityNotFoundException

目录

Case 1

出错堆栈

09-05 09:42:27.892 32688-32688/org.mazhuang.exceptiondemo D/AndroidRuntime: Shutting down VM
09-05 09:42:27.892 32688-32688/org.mazhuang.exceptiondemo E/AndroidRuntime: FATAL EXCEPTION: main
    Process: org.mazhuang.exceptiondemo, PID: 32688
    android.content.ActivityNotFoundException: Unable to find explicit activity class {org.mazhuang.exceptiondemo/org.mazhuang.exceptiondemo.activity.SettingActivity}; have you declared this activity in your AndroidManifest.xml?
        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
        at android.app.Activity.startActivityForResult(Activity.java:3424)
        at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:54)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
        at android.app.Activity.startActivityForResult(Activity.java:3385)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:708)
        at android.app.Activity.startActivity(Activity.java:3627)
        at android.app.Activity.startActivity(Activity.java:3595)
        at org.mazhuang.exceptiondemo.MainActivity.onClick(MainActivity.java:121)
        at org.mazhuang.exceptiondemo.MainActivity_ViewBinding$6.doClick(MainActivity_ViewBinding.java:83)
        at butterknife.internal.DebouncingOnClickListener.onClick(DebouncingOnClickListener.java:22)
        at android.view.View.performClick(View.java:4438)
        at android.view.View$PerformClick.run(View.java:18422)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5017)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)

出错代码

手动加了一个 Activity，但是却未在 AndroidManifest.xml 中声明。

崩溃分析

官方文档 有说明：

To be of use with Context.startActivity(), all activity classes must have a corresponding <activity> declaration in their package’s AndroidManifest.xml.

解决方案

在 AndroidManifest.xml 里加上缺少的 Activity 声明：

<manifest
    ...>
    ...
    <application
        ...>
        ...
        <activity android:name=".activity.SettingActivity" />
    </application>
    ...
</manifest>

参考链接

This site is open source. Improve this page.