When I run my app, I am taken to an Edit Configuration screen and it says, "Default Activity not found". I believe I got this error after I tried to import a library from another app I have.
I keep getting this error even after I rebuilt my project, restarted IntelliJ IDEA and file > Invalidated Cache. I did set a main activity so I'm not sure why it says that.
Here's the exception:
Process: com.example.Device, PID: 24635
java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.IllegalStateException: Unable to get package info for com.example.Device; is package not installed?
at android.app.LoadedApk.makeApplication(LoadedApk.java:507)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4301)
at android.app.ActivityThread.access$1500(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: Unable to get package info for com.example.Device; is package not installed?
at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:368)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:321)
at android.app.LoadedApk.makeApplication(LoadedApk.java:500)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4301)
at android.app.ActivityThread.access$1500(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
I can run my application anyway even though the "configuration is not set" and all is well.
Are you capable to "select" the activity from the list of activities ?
There is an activity defined in AndroidManifest as the main activity (launcher)
If it shows Edit configuration Screen and Error as "Default activity not found" then go to your manifest file and in activity tag which will be your launching activity name should be like "packageName.MainActivty" instead of ".MainActivity" see below code for your reference
<activity
android:name="com.your.package.name.YourActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
Related
I am following a tutorial on how to make a launcher but for some reason when I add this line of code to my main activity with in the manifest the app crashes saying that my app has stopped
android:theme="#android:style/Theme.Holo.Wallpaper.NoTitleBar"
10-18 15:04:25.245 18122-18122/com.example.harrops.h20droidlauncher E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.harrops.h20droidlauncher, PID: 18122
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.harrops.h20droidlauncher/com.example.harrops.h20droidlauncher.HomeLayout}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2400)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2458)
at android.app.ActivityThread.access$900(ActivityThread.java:172)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1305)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5598)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:309)
at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:278)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:252)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.example.harrops.h20droidlauncher.HomeLayout.onCreate(HomeLayout.java:13)
at android.app.Activity.performCreate(Activity.java:5459)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2458)
at android.app.ActivityThread.access$900(ActivityThread.java:172)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1305)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5598)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
if I remove the line of code the app runs just fine.
Any help would be great. Thanks as always in advance.
To change the Background use:
android:background=" "
You selected a wallpaper.
Try this instead
android:background="#b6db49">
Below you have said that you want to use the theme. So you have to go in the manifest and edit the theme there which is
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.Holo.Wallpaper.NoTitleBar">
If You've begun Your project in Android Studio by default main activity extends
ActionBarActivity which requires the AppCompat theme. Change the Java inheritance from ActionBarActivity to Activity and leave the theme in the manifest as it is. Or use AppCompat theme.
I am developing an expandable list view application on which i want to add action bar.
It seems for action bar visibility I need to extend ActionBarActivity Class, but to run my Expandable list activity I should extend activity class.
So, I changed following code
from
public class Time extends Activity {
to
public class Time extends ActionBarActivity {
assuming following hierarchy
java.lang.Object
↳ android.content.Context
↳ android.content.ContextWrapper
↳ android.view.ContextThemeWrapper
↳ android.app.Activity
↳ android.support.v4.app.FragmentActivity
↳ android.support.v7.app.ActionBarActivity
But,when i run my application now i get null pointer exception at super.onCreate(savedInstanceState);
Please check log here:
12-19 00:10:48.995 14128-14128/sudharshanapps.clock E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: sudharshanapps.clock, PID: 14128
java.lang.RuntimeException: Unable to start activity ComponentInfo{sudharshanapps.clock/sudharshanapps.clock.Time}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2198)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2257)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5086)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:151)
at android.support.v7.app.ActionBarActivityDelegateBase.onCreate(ActionBarActivityDelegateBase.java:138)
at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:123)
at sudharshanapps.clock.Time.onCreate(Time.java:247)
at android.app.Activity.performCreate(Activity.java:5248)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2162)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2257)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5086)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Could you please suggest, what is missing here or any references or ideas where to look for.
Changed Manifest file from
<application
android:allowBackup="true"
android:icon="#drawable/logo"
android:label="Time across Globe"
android:theme="#style/AppTheme" >
to
<application
android:allowBackup="true"
android:icon="#drawable/logo"
android:label="Time across Globe"
android:theme="#style/Theme.AppCompat.Light" >
It solved the issue
I've already read serveral Q&A's from SO and did not found a solution.
My problem is: I run my app from AndroidStudio and get the error bellow, then I run gradlew clean installDebug and code works just fine (outside AS, with NO changes).
I did NOT forgot to include my activity into AndroidManifest.
10-13 13:36:18.261 1457-1457/my.package E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: my.package, PID: 1457
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{my.package/my.package.activity.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "my.package.activity.MainActivity" on path: DexPathList[[zip file "/data/app/my.package-1.apk"],nativeLibraryDirectories=[/data/app-lib/my.package-1, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "my.package.activity.MainActivity" on path: DexPathList[[zip file "/data/app/my.package-1.apk"],nativeLibraryDirectories=[/data/app-lib/my.package-1, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2101)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
I'm using Android Studio 0.8.12 and this is reproducible with real devices and emulator (Genymotion).
EDIT
I've tried both "full path" and "class name only" into my AndroidManifest file to declare activities. And it still doesn't explain (IMHO) why it works via command line with gradle.
I really don't know what's going on with the Android app I'm building. At some point on its development, I started getting it breaking as soon as it starts in the emulator, with the message "Foo stopped". Here is the error log, if anyone could help me:
07-05 21:13:30.063 7647-7647/root.fazerumsom E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: root.fazerumsom, PID: 7647
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{root.fazerumsom/root.fazerumsom.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.content.ContextWrapper.getResources(ContextWrapper.java:89)
at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:78)
at root.fazerumsom.MainActivity.<init>(MainActivity.java:31)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1208)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2101)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
You're calling getResources() from a field initializer. Something like
private String mStr = getResources().getString(...);
(or with drawables or other kind of resources).
This is not valid, since the Context isn't set up yet. Move this assignment inside the onCreate() method.
The checked exception java.lang.NullPointerException is thrown when you're trying to use an object without reference,in simple words that means: you're trying to use a object variable without value.
Remember that a variable hold bits, primitive and non-primitive variable do, but the difference is that primitive variable hold the value in bits, but non-primitive variable hold the bits (like a direction) to access the object in memory, and when it's not being used anymore GGC (Garbage Colector) kills it.
I'm new to android app development and i'm following a tutorial on fragments, the final application is working correctly on Nexus 7 but not on Nexus 4. Both have android 4.4.2 installed.
Here is a zip file of android project: https://dl.dropboxusercontent.com/u/108022472/fragments.zip
I'm getting the following error with Nexus 4.
12-31 11:48:29.592 21384-21384/com.example.fragment2 E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.fragment2, PID: 21384
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fragment2/com.example.fragment2.MainActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f030002
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f030002
at android.content.res.Resources.getValue(Resources.java:1123)
at android.content.res.Resources.loadXmlResourceParser(Resources.java:2309)
at android.content.res.Resources.getLayout(Resources.java:939)
at android.view.LayoutInflater.inflate(LayoutInflater.java:395)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
at android.app.Activity.setContentView(Activity.java:1929)
at com.example.fragment2.MainActivity.onCreate(MainActivity.java:20)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Can someone explains why the error is happening with Nexus 4 and not Nexus 7
The error says it plainly: the system can't find resource with id #0x7f030002, available for Nexus 4.
To solve this, go to your R class, and look for the name of that resource; I see this is the id of news_articles layout. Now, a simple check in you layout folder will show you that you don't have any file with that name there, but only in the layout-large one.
So, create a news_articles layout in the layout folder, to be used by all screen sizes; or, if it's not needed for regular phones, use reflection in code, in your java class, to make sure it's not asked for.
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fragment2/com.example.fragment2.MainActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f030002
Android engine is unable to find resources which is suitable for Nexus 4. So check your res folder. For temporary result You can do following thing. create drawable, layout folders in res folder. Then copy your layouts, drawables to respective folders. Then You will come out of this error easily