问题
There was some permission constraint in manifest file .... I removed it but the application still crashes on button click....Rest of the buttons are working great..... It started happening when i used the Notepad sample code in the SDK to impement a similar "save Notes" for my application
These are the new logcat details
09-13 03:23:42.743: E/AudioTrack(776): Could not get audio output for stream type 3
09-13 03:23:42.743: E/SoundPool(776): Error creating AudioTrack
09-13 03:23:43.363: D/dalvikvm(776): GC_FOR_ALLOC freed 104K, 3% free 10299K/10524K, paused 61ms, total 95ms
09-13 03:23:43.394: I/dalvikvm-heap(776): Grow heap (frag case) to 13.121MB for 3094560-byte allocation
09-13 03:23:43.563: D/dalvikvm(776): GC_FOR_ALLOC freed 3542K, 28% free 9779K/13548K, paused 172ms, total 173ms
09-13 03:23:44.223: I/Choreographer(776): Skipped 329 frames! The application may be doing too much work on its main thread.
09-13 03:23:44.493: I/Choreographer(776): Skipped 64 frames! The application may be doing too much work on its main thread.
09-13 03:23:44.913: I/Choreographer(776): Skipped 97 frames! The application may be doing too much work on its main thread.
09-13 03:23:45.693: I/Choreographer(776): Skipped 77 frames! The application may be doing too much work on its main thread.
09-13 03:23:51.364: E/AudioTrack(776): Could not get audio output for stream type 3
09-13 03:23:51.364: E/SoundPool(776): Error creating AudioTrack
09-13 03:23:51.914: D/AndroidRuntime(776): Shutting down VM
09-13 03:23:51.914: W/dalvikvm(776): threadid=1: thread exiting with uncaught exception (group=0x41465700)
09-13 03:23:52.024: E/AndroidRuntime(776): FATAL EXCEPTION: main
09-13 03:23:52.024: E/AndroidRuntime(776): java.lang.RuntimeException: Unable to start activity ComponentInfo{hellog.diwesh.NugaBest/helog.diwesh.NugaBest.NotesList}: java.lang.SecurityException: Permission Denial: opening provider com.example.android.notepad.NotePadProvider from ProcessRecord{41986ad8 776:hellog.diwesh.NugaBest/u0a10049} (pid=776, uid=10049) that is not exported from uid 10050
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.access$600(ActivityThread.java:141)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.os.Handler.dispatchMessage(Handler.java:99)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.os.Looper.loop(Looper.java:137)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.main(ActivityThread.java:5103)
09-13 03:23:52.024: E/AndroidRuntime(776): at java.lang.reflect.Method.invokeNative(Native Method)
09-13 03:23:52.024: E/AndroidRuntime(776): at java.lang.reflect.Method.invoke(Method.java:525)
09-13 03:23:52.024: E/AndroidRuntime(776): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-13 03:23:52.024: E/AndroidRuntime(776): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-13 03:23:52.024: E/AndroidRuntime(776): at dalvik.system.NativeStart.main(Native Method)
09-13 03:23:52.024: E/AndroidRuntime(776): Caused by: java.lang.SecurityException: Permission Denial: opening provider com.example.android.notepad.NotePadProvider from ProcessRecord{41986ad8 776:hellog.diwesh.NugaBest/u0a10049} (pid=776, uid=10049) that is not exported from uid 10050
09-13 03:23:52.024: E/AndroidRuntime(776): at android.os.Parcel.readException(Parcel.java:1431)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.os.Parcel.readException(Parcel.java:1385)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:2611)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.acquireProvider(ActivityThread.java:4515)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2036)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1149)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.content.ContentResolver.query(ContentResolver.java:398)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.content.ContentResolver.query(ContentResolver.java:357)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.Activity.managedQuery(Activity.java:1765)
09-13 03:23:52.024: E/AndroidRuntime(776): at helog.diwesh.NugaBest.NotesList.onCreate(NotesList.java:104)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.Activity.performCreate(Activity.java:5133)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
09-13 03:23:52.024: E/AndroidRuntime(776): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
09-13 03:23:52.024: E/AndroidRuntime(776): ... 11 more
09-13 03:23:56.654: I/Process(776): Sending signal. PID: 776 SIG: 9
Androidmanifst
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="hellog.diwesh.NugaBest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="11" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:name="helog.diwesh.NugaBest.MyApplication"
android:debuggable="true"
android:icon="@drawable/nuga"
android:label="@string/app_name" >
<activity
android:name="helog.diwesh.NugaBest.NUGA_HealthCareActivity_Intro"
android:configChanges="orientation|keyboardHidden"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
// 4. Layout Management
<activity
android:name="helog.diwesh.NugaBest.FileSiganlDisplay"
android:label="FileSiganlDisplay" />
<activity
android:name="helog.diwesh.NugaBest.NUGA_WebJoinActivity"
android:label="NUGA_WebJoinActivity"
android:windowSoftInputMode="stateHidden" />
<activity
android:name="helog.diwesh.NugaBest.NUGA_MainMenuActivity"
android:label="NUGA_MainMenuActivity" />
<activity
android:name="helog.diwesh.NugaBest.BTSmartSlavemodule"
android:configChanges="orientation|keyboardHidden"
android:label="SmartSlavemodule" />
<activity
android:name="helog.diwesh.NugaBest.BTDeviceListActivity"
android:configChanges="orientation|keyboardHidden"
android:label="@string/select_device"
android:theme="@android:style/Theme.Dialog" />
<activity
android:name="helog.diwesh.NugaBest.SnapActivity"
android:label="@string/title_activity_snap" >
</activity>
<activity
android:name="helog.diwesh.NugaBest.ImagesActivity"
android:label="@string/title_activity_images" >
</activity>
<activity
android:name="helog.diwesh.NugaBest.HelpActivity"
android:label="@string/Help" >
</activity>
<activity
android:name="helog.diwesh.NugaBest.AboutDevice"
android:label="@string/aboutus" >
</activity>
// Notepad Application
<activity android:name="NotesList" android:label="@string/title_notes_list">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.EDIT" />
<action android:name="android.intent.action.PICK" />
<data android:mimeType="vnd.android.cursor.dir/vnd.google.note" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.GET_CONTENT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.google.note" />
</intent-filter>
</activity>
<activity android:name="NoteEditor"
android:theme="@android:style/Theme.Holo.Light"
android:screenOrientation="sensor"
android:configChanges="keyboardHidden|orientation"
>
<!-- This filter says that we can view or edit the data of
a single note -->
<intent-filter android:label="@string/resolve_edit">
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.EDIT" />
<action android:name="helog.diwesh.NugaBest.action.EDIT_NOTE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.google.note" />
</intent-filter>
<!-- This filter says that we can create a new note inside
of a directory of notes. The INSERT action creates an
empty note; the PASTE action initializes a new note from
the current contents of the clipboard. -->
<intent-filter>
<action android:name="android.intent.action.INSERT" />
<action android:name="android.intent.action.PASTE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.dir/vnd.google.note" />
</intent-filter>
</activity>
<activity android:name="TitleEditor"
android:label="@string/title_edit_title"
android:icon="@drawable/ic_menu_edit"
android:theme="@android:style/Theme.Holo.Dialog"
android:windowSoftInputMode="stateVisible">
<!-- This activity implements an alternative action that can be
performed on notes: editing their title. It can be used as
a default operation if the user invokes this action, and is
available as an alternative action for any note data. -->
<intent-filter android:label="@string/resolve_title">
<!-- This is the action we perform. It is a custom action we
define for our application, not a generic VIEW or EDIT
action since we are not a general note viewer/editor. -->
<action android:name="helog.diwesh.NugaBest.action.EDIT_TITLE" />
<!-- DEFAULT: execute if being directly invoked. -->
<category android:name="android.intent.category.DEFAULT" />
<!-- ALTERNATIVE: show as an alternative action when the user is
working with this type of data. -->
<category android:name="android.intent.category.ALTERNATIVE" />
<!-- SELECTED_ALTERNATIVE: show as an alternative action the user
can perform when selecting this type of data. -->
<category android:name="android.intent.category.SELECTED_ALTERNATIVE" />
<!-- This is the data type we operate on. -->
<data android:mimeType="vnd.android.cursor.item/vnd.google.note" />
</intent-filter>
</activity>
<activity android:name="NotesLiveFolder" android:label="@string/live_folder_name"
android:icon="@drawable/live_folder_notes">
<intent-filter>
<action android:name="android.intent.action.CREATE_LIVE_FOLDER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
回答1:
You haven't declared NoteList activity in your manifest file.
Please include this in your manifest.
Hope it Helps!!
回答2:
Unable to find explicit activity class {hellog.diwesh.NugaBest/helog.diwesh.NugaBest.NotesList}; have you declared this activity in your AndroidManifest.xml?
It means that you forgot to declare your NotesList activity inside manifest file and if you declared then there would be problem with your packagename in declaration, please cross check activity & package name in your manifest file and confirm that you declared correctly.
回答3:
Error here, You have not declared in proper way
<activity android:name="NotesList" android:label="@string/title_notes_list">
make it like this
<activity android:name=".NotesList" android:label="@string/title_notes_list">
Error in your package name your package name is hellog.diwesh.NugaBest but you declared in all activity like helog.diwesh.NugaBest change according to that.
来源：https://stackoverflow.com/questions/18779284/logcat-error-description-button-launch-crashes-app