I have recently installed Eclipse ADT bundle, updates all the sdk tool etc. Eclipse, AVD everything is working great. I can Import other samples and it runs and works great on both my android device and AVD.
However, i am new to all this and i wanted to start with the hello world app tutorial written up by http://developer.android.com/training/basics/firstapp/creating-project.html
It basically says that when you start a new Android application project with default settings, only choosing "blank activity", that by default it will build as a Hello World App that can be immediately run straight off the bat. But this is not the case, when i try to run i get,
[2014-07-02 14:20:20 - Jeremy] No Launcher activity found!
[2014-07-02 14:20:20 - Jeremy] The launch will only sync the application package on the device!
There is no launch activity coded into the manifest.xml file like i have seen in other examples. I just really want to start from the basics, yet i can't even get to follow this tutorial because i can't get the default hello world app to work.
The manifest file as is,
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.jeremy"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
</application>
</manifest>
And there is no file in the Src folder either, just it says that's where the activity class is meant to be?
Can someone please advise me how to get this basic hello world app running?
Thanking you in advance,
Jeremy
Try to create a package under 'src' folder like "com.example.jeremy" and try to create a class called MainActivity.java
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.jeremy"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.jeremy.MainActivity"
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>
</manifest>
you have not declared the activity tag in manifest.xml
Related
I've developed an app but when I run it, it crashes and shows the error: android unable to instantiate activity componentinfo classnotfoundexception.
I've read a lot about this error. I've tried Project -> Properties -> Java Build Path -> Order & Export and ensure Android Private Libraries and all other library projects are checked.
I've also noticed that when I press ctrl and pass the mouse over, for example, .MainActivity in my Android Manifest file, it doesn't display or link me to the Activity, don't know why.
Any ideas about this problem? Thank you so much.
EDIT: Manifest added
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.isa.mememe"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="13"
android:targetSdkVersion="16" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</manifest>
When I create an Android project in Eclipse and send it to my device for debugging, the app works fine but when I try to uninstall it, I get a strange message. Below are the steps to recreate my problem:
Eclipse Version: 4.2.0 Build id: I20120608-1400
ADT Version: 2.0.3 v201208082019-427395
Run Eclipse
Click File->New->Project...
Select Android/Android Application Project
Click Next.
Enter Application Name: Test
Build SDK: Android 4.1
Minimum Required SDK: API 8 Android 2.2
Enable: Create custom launcher icon / Create project in workspace
Click Next thrice.
Click Finish.
Connect 4.1 Android device to computer via USB.
Click Run->Run from menu.
Select "Android application" on popup the "Run As" popup.
Click Ok.
MainActivity application runs on device.
Click the Back button on the Android device.
Open applications on device and find "MainActivity" app.
Long press the MainActivity icon and drag to trash.
Here's the puzzling part:
Instead of getting a standard
Do you want to uninstall this app?
I get a dialog with this text:
MainActivity is part of the following app: Test
Do you want to uninstall this app?
Why do I get this message instead of the standard one?
Why is MainActivity the name of the app when I specifically stated the name of the app is "Test"?
Additional Information:
If I go to Settings->Apps, the Application shows up as Test but is listed in my Launcher as MainActivity.
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
The solution is to remove android:label="#string/title_activity_main" in the activity element.
The AndroidManifest.xml below solves the problem on Android 4.1.1 .
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Make sure your app name app_name is not styled.
Since I was using the app name somewhere else in the app I had made it bold, like this - In my strings.xml
<string name="app_name"><b>We are sons<b></string>
When I removed
<b></b>
tags, it worked.
Just keep it :
<string name="app_name">We are sons</string>
I do not know how to solve the first issue but the second can be solved in the following way. The problem is connected with Android new project wizzard. To solve this problem you can correct your manifest file in the following way and redeploy your project:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter android:label="#string/app_name" >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Do not forget to check what is the value of app_name. Some more details you can find in this post
I have developed a simple application using SDK(Android: 3.2[API-13]) for, to display Google banners.
I have tow problems in this application.
Problem No.1:
I have checked the application it runs on emulator but how can i check it that it working correctly or not?
Problem No.2:
I want to run the application on my physical Android device using Android version 2.3.3. What changes I need to do in the application to run it on my Android device using Android version 2.3.3.?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.farman.banner"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10"/>
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".MyBannerActivity"
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="com.google.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"/>
</application>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
</manifest
>
Ans 1 :-You have to install it in the Device and Check it.
Ans 2 :-To Run it in the 2.3.3 version,you have edit the files as below:-
project.properties OR default.properties(Only 1 of the 2 may
be present in the root folder)
Here...Change the value of target=android-10
Androidmanifest.xml
Here...Check and Change the value of
<uses-sdk android:minSdkVersion="13" /> as <uses-sdk android:minSdkVersion="10" />
Now clean and run your application and it will run in 2.3 version.
I've done the setup as described for ActionBarSherlock. I've also added ABS as a library project and believe this is working as expected as Eclipse is finding references to class's within it's packages. I've also set the theme as required in the code and in the AndroidManifest.xml:
Code:
import com.actionbarsherlock.app.SherlockActivity;
public class TestClass extends SherlockActivity{
Context myContext;
public void onCreate(Bundle savedInstanceState) {
setTheme(R.style.Theme_Sherlock_NoActionBar);
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.danieljgmaclean.xxx"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="#drawable/px_icon"
android:label="#string/app_name"
android:theme="#style/Theme.Sherlock.Light" >
<activity
android:name="TestClass"
android:label="#string/app_name"
android:noHistory="true" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
However apon execution i'm getting the following exception thrown:
Caused by: java.lang.RuntimeException: Couldn't find content container view
This is being called on:
com.danieljgmaclean.xxx.TestClass.onCreate(TestClass.java:23)
I'm running the code on a 2.3.3 emulator and i've set the target build to 4.0.3 and JDK version to 1.6.
Any ideas would be appreciated.
In my case the problem was a "raw" folder inside res which contained the db of the app. So I just removed the folder and the actionbar worked again. Now the problem is that I need the raw...
After I have set up all the unit test cases for my android application I now also want to do functional testing. But I encouter one problem. As I am developping for the HTC Legend I can, by now, only use android platforms up to 2.1. But in some way it seems that the ActivityInstrumentationTestCase2 won't work.
public SupplierSelectoinTest() {
super("com.sap.catalogue.activities", SupplierSelection.class);
}
This simple piece of code gives me the following error, when I try to run the test:
java.lang.RuntimeException: Unable to resolve activity for: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=com.sap.catalogue.activities/com.sap.catalogue.activities.SupplierSelection }
at android.app.Instrumentation.startActivitySync(Instrumentation.java:371)
at android.test.InstrumentationTestCase.launchActivityWithIntent(InstrumentationTestCase.java:120)
at android.test.InstrumentationTestCase.launchActivity(InstrumentationTestCase.java:98)
at android.test.ActivityInstrumentationTestCase2.getActivity(ActivityInstrumentationTestCase2.java:87)
at com.sap.catalogue.test.acceptance.SupplierSelectoinTest.setUp(SupplierSelectoinTest.java:27)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:430)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1447)
I read through all tutorials and all I get out of it is, that it should work but it doesn't. Anyway, when I switch to android 2.2 (which is no solution for now) and I use the new constructor, where I only need to hand in the activity class and not the pkg string the emulator will run the tests without complaining.
But there has to be a way to get this running in android 2.1!
In addition
These are my two Manifest.xml files. The first one, is the one of the application itself. The other one is the one of the test project.
Application Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.sap.catalogue"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".Catalogue"
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=".activities.CategoryBrowser"></activity>
<activity android:name=".activities.ProductDetails"></activity>
<activity android:name=".activities.ProductSearch"></activity>
<activity android:name=".activities.ProductView"></activity>
<activity android:name=".activities.SupplierSelection"></activity>
</application>
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
Test Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.sap.catalogue.test"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<uses-library android:name="android.test.runner" />
</application>
<uses-sdk android:minSdkVersion="7" />
<instrumentation android:targetPackage="com.sap.catalogue" android:name="android.test.InstrumentationTestRunner" />
</manifest>
Use the top level package name.
public SupplierSelectoinTest() {
super("com.sap.catalogue", SupplierSelection.class);
}
Most probably, you didn't write the activity in the Manifest.xml. Would you share it also?
Edit:
Add this to the test Manifest.xml. I think, this will solve your problem.
<activity android:name="com.sap.catalogue.activities.SupplierSelection"></activity>