Question

我使用意图指向下一个活动，但是当我点击按钮时，我收到以下错误。

03-29 11:25:55.414: E/AndroidRuntime(3921): FATAL EXCEPTION: main
\
**03-29 11:25:55.414: E/AndroidRuntime(3921): android.content.ActivityNotFoundException: 
Unable to find explicit activity class {mycube.test/mycube.test.Compte}; have you declared 
this activity in your AndroidManifest.xml?**

03-29 11:25:55.414: E/AndroidRuntime(3921):     at

 android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.app.Instrumentation.execStartActivity(Instrumentation.java:1379)


03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.app.Activity.startActivityForResult(Activity.java:2827)


03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.app.Activity.startActivity(Activity.java:2933)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at mycube.test.Menu.onClick(Menu.java:143)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.view.View.performClick(View.java:2538)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.view.View$PerformClick.run(View.java:9152)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.os.Handler.handleCallback(Handler.java:587)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.os.Handler.dispatchMessage(Handler.java:92)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at android.os.Looper.loop(Looper.java:130)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

android.app.ActivityThread.main(ActivityThread.java:3687)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

java.lang.reflect.Method.invokeNative(Native Method)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

java.lang.reflect.Method.invoke(Method.java:507)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at 

com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)

03-29 11:25:55.414: E/AndroidRuntime(3921):     at dalvik.system.NativeStart.main(Native Method)

但是我的清单中存在该文件。我在清单中省略了一行吗？

这是我的清单文件。

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="mycube.test"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Light.NoTitleBar" >

        <activity
            android:name=".Menu" 
            android:screenOrientation="portrait"
            android:label="@string/app_name" >
            <intent-filter>

                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

    <activity  android:name=".Compte"  android:screenOrientation="portrait" />
</manifest>

Answer 1

您已在应用标记之外声明此活动。

<activity  android:name=".Compte"  android:screenOrientation="portrait" />

像这样：

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.Light.NoTitleBar" >

    <activity
        android:name=".Menu" 
        android:screenOrientation="portrait"
        android:label="@string/app_name">
        <intent-filter>
             <action android:name="android.intent.action.MAIN" />
             <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

    </activity>

    <activity  
         android:name=".Compte"  
         android:screenOrientation="portrait" />

</application>

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

Answer 2

您将它放在应该位于应用标记内的错误位置。您的所有<activity... />标记都应放在<application.. />标记下。

它应该是这样的：

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Light.NoTitleBar" >

<activity  
    android:name=".Compte"  
    android:screenOrientation="portrait" />

<activity
    android:name=".Menu" 
    android:screenOrientation="portrait"
    android:label="@string/app_name" >

    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>

</activity>

</application>

Answer 3

唯一要查找的异常如下所示。

android.content.ActivityNotFoundException：无法找到显式活动课 {com.firstp.ta.myapplication / com.firstp.ta.myapplication.Activity1}; 您是否在AndroidManifest.xml中声明了此活动？

显然，您没有在AndroidManifest.xml文件中列出您的活动，或者如果列出了活动，则该活动不在必需的标记内。它还将完整的活动路径提到为{com.firstp.ta.myapplication / com.firstp.ta.myapplication.Activity1}，其中Activity1是您的活动，需要在AndroidManifest.xml文件中提及。

...你有没有在AndroidManifest.xml中声明这个活动

3 个答案: