…你在AndroidManifest.xml中声明了这个活动吗？
我用意图指向下一个活动，但是当我点击button，我得到以下错误。
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) 但是该文件存在于我的清单中。 我在清单中是否省略了一行？
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>
您已经在应用程序标签之外声明了此活动
<activity android:name=".Compte" android:screenOrientation="portrait" />
像这样做：
<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>
你把它放在错误的位置，它应该在应用程序标签内。 所有<activity... />标签都应该放在<application.. />标签下。
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>
