Develop Reference

app install on device/emulator but not starts automatically

I have installed a new setup of adb-bundle. When I run the project apk installed on device/emulator but not opens automatically. This problem is not related to coding I this it is related to eclipse setup because it happens with all projects. Please Help. Facing issue with debugging due to this problem.
Manifest.xml:
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.demo.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>
Thanks

It seems like you have a problem with the adb. Open task manager and kill the adb process and restart everything and try again. If you have made some changes to the installed adb try to install it again properly.
Check the below links also,
https://lesleyharrison.wordpress.com/2011/01/15/solution-for-android-emulator-starts-but-app-doesnt-run/
Android application doesn't start from Eclipse

Eclipse installs my app twice on my android phone

I am having issues with Eclipse. I'm new to Android development so I wouldn't be surprised if I messed something up along the way.
My app installs twice on my phone. When I click 'Run', Eclipse does the usual with installation, but when it is finished, the app shows up twice (ie. two separate icons) on my phone. Any ideas what the problem is?

In your manifest:
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name="com.myapp.FirstActivity"
android:theme="#style/Theme.Apptheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.myapp.SecondActivity"/>
</application>
make sure only your first activity has an intent-filter.

Uninstall both programs from the emulator. If you change the name of the program and/or change some of the settings, then it can install as a different program. My guess is after you do the install, then run that you'll only have the one icon.

Did you run two different versions of this code?
If so it will not save over the old icon but make a new one.
If this is the case trying deleting boths apps from the emulator and re-running it cleanly.

In my case I had two activities with the following intent-filter
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>

Android app does not start (and is invisible!) on device

I have a strange problem with my Android app. When I start it from Netbeans, the app gets installed on my device (attached via USB). After that nothing happens. I also can't find the app anywhere on the device!! (no icon, no nothing).
Still I know the app has been installed, because under the android settings, where it says "Manage Applications" (or something) the app is now listed and I can uninstall it.
I've tried the whole procedure with a blank HelloWorld app, which worked fine. Here an icon got created o the device and the app was started correctly by NetBeans.
So I guess there is something wrong with my app causing it not to appear in the phone's launcher?
EDIT:
Here's the manifest:
<?xml version="1.0" encoding="utf-8"?>
<uses-sdk android:minSdkVersion="4" />
<application
android:icon="#drawable/icon"
android:label="#string/app_name" android:debuggable="true">
</application>

you need to add below line in your Main activity in androidmanifest file
<activity android:label="#string/app_name"
android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

My apps will not install on device when downloaded from the Android Market

I am unable to install my app onto a device even when it is downloaded from the Android Market. How can this be possible? If it were signed incorrectly wouldn't the market not accept it? I have tried to install it by isolating various activities but none seem to work even when I reduce it to a simple hello world application. The app has a tab view, two being webviews [one includes a reload button] and one tab that allows a user to send an email to a submission page. Does anyone have any ideas as to what I am missing?
Thank you all very much in advance.
EDIT:
It's being downloaded on the LG Ally running 2.2.2 and my app runs fine on an 2.2 emulator. It is compiled with a min level of 4. Here is my AndroidManifest file
<?xml version="1.0" encoding="utf-8"?>
<application android:icon="#drawable/icon" android:label="#string/app_name" android:debuggable="false">
<activity android:name=".BrotipsTabs"
android:label="Brotips">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".TabWidget"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".Random"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".Sub"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".BrotipsTabs" android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar">
</activity>
<meta-data android:name="com.mobclix.APPLICATION_ID" android:value="<Key>"/>
<activity android:name="com.mobclix.android.sdk.MobclixBrowserActivity" android:theme="#android:style/Theme.Translucent.NoTitleBar"/>
</application>
<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>
By not working I mean it refuses to install and claims it never did while an icon remains on the phone.

Do you have any previous versions of your app installed on your phone? If you have an apk that is signed with the debug signature (which eclipse uses when you push run) and try to install it from the market which is signed with an actual signature then it will fail due to the two signatures being different. The message that it shows you is different on different devices I've found. If you have any previous versions of your app installed you should uninstall them and try to install from the market again. You should be good to go.

After I remove the apk, whenever I start Debug it tells me the package is not installed

I have my Emulator open, and using Command Prompt I remove my application. I didn't closed the Emulator.
Then I go to Eclipse and hit Debug, but doesn't deploy the apk to the emulator, just tells me the package not yet registered with the system.
New package not yet registered with the system. Waiting 3 seconds before next attempt.
Restarting the emulator is not an option, as that takes 10-15 minutes.
What I am doing wrong?

I have encountered this occasionally. Doing a clean project before rebuilding and redeploying seems to do the trick.

This is eclipse (the point is eclipse can not run your app because can not start the right intent because can not find the right package) and one of the workaround of this is to rename your package in the manifest for example rename
package="com.hernblog.GreenThumbs"
to
package="com.hernblog.GreenThumbs1"
compile and build this, then put it back to the name you wanted
package="com.hernblog.GreenThumbs"
works as a charm :)

Clean and re-build may not help.
So, in that case remove the app from your device.
Then re-run your project on your device. That will help.

After trying many different solutions for this problem, I found that the line
<application android:debuggable="true" />
in my AndroidManifest was causing this problem.
Removing this line fixed it for me.
Note: You can still build with debugging mode without this line by using the ndk-build option NDK_DEBUG=1

im also having same problem.
I just commit my src,res folder in svn.
Then i check out new project from svn then it will works correctly.

Also check your "Enabled" option in manifest! Mine turned to off, somehow ..

I have also had this problem.
For me it was the fact that my launcher activity (the one with the Launch intent) did not have the "android:label" attribute
WRONG!!!
<application
android:icon="#drawable/icon"
android:label="#string/app_name">
<activity
android:name=".ui.SplashScreenActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ui.DashboardActivity"
android:label="#string/app_name">
</activity>
<activity android:name=".ui.LogListActivity"></activity>
</application>
RIGHT - Note the SplashScreenActivity
<application
android:icon="#drawable/icon"
android:label="#string/app_name">
<activity
android:name=".ui.SplashScreenActivity"
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=".ui.DashboardActivity"
android:label="#string/app_name">
</activity>
<activity android:name=".ui.LogListActivity"></activity>
</application>