Develop Reference

greenDAO testSuiteConstructionFailed error when testing entities

I have tried writing test cases in JUnit using the greenDAO sample app as an example, but I get a RuntimeException caused by InvocationTargetException:
It doesn't even run the tests.
Below is the code that is barfing this up:
import de.greenrobot.dao.test.*;
public class LibrarySummaryTest extends AbstractDaoTestLongPk<LibrarySummaryDao, LibrarySummary> {
public LibrarySummaryTest() {
super(LibrarySummaryDao.class);
}
#Override
protected LibrarySummary createEntity(Long arg0) {
// TODO Auto-generated method stub
return null;
}
}
Is there something I am missing?
I have an Android app, the tests are in a separate app. I indicated this when I generated the code:
schema.setDefaultJavaPackageTest("com.ralphpina.greenDao.test");
schema.setDefaultJavaPackageDao("com.ralphpina.greenDao.greendao");
I have the instrumentation correctly targeting the app. I have a whole bunch of JUnit test cases that run perfectly fine.
I have included the greenDAO.jar in both apps, and I have double checked that it is in the build path.
I have the notes sample app in my eclipse environment and the JUnit test runs fine there. So there must be something specific in my project. Any suggestions?
Text of full exception:
03-15 01:02:22.794: I/TestRunner(8775): java.lang.RuntimeException: Exception during suite construction
03-15 01:02:22.794: I/TestRunner(8775): at android.test.suitebuilder.TestSuiteBuilder$FailedToCreateTests.testSuiteConstructionFailed(TestSuiteBuilder.java:238)
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestCase.runTest(TestCase.java:168)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestCase.runBare(TestCase.java:134)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestResult$1.protect(TestResult.java:115)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestResult.runProtected(TestResult.java:133)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestResult.run(TestResult.java:118)
03-15 01:02:22.794: I/TestRunner(8775): at junit.framework.TestCase.run(TestCase.java:124)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:190)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:175)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
03-15 01:02:22.794: I/TestRunner(8775): at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1661)
03-15 01:02:22.794: I/TestRunner(8775): Caused by: java.lang.reflect.InvocationTargetException
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Constructor.constructNative(Native Method)
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.suitebuilder.TestMethod.instantiateTest(TestMethod.java:87)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.suitebuilder.TestMethod.createTest(TestMethod.java:73)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.suitebuilder.TestSuiteBuilder.addTest(TestSuiteBuilder.java:262)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.suitebuilder.TestSuiteBuilder.build(TestSuiteBuilder.java:184)
03-15 01:02:22.794: I/TestRunner(8775): at android.test.InstrumentationTestRunner.onCreate(InstrumentationTestRunner.java:379)
03-15 01:02:22.794: I/TestRunner(8775): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4382)
03-15 01:02:22.794: I/TestRunner(8775): at android.app.ActivityThread.access$1300(ActivityThread.java:141)
03-15 01:02:22.794: I/TestRunner(8775): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294)
03-15 01:02:22.794: I/TestRunner(8775): at android.os.Handler.dispatchMessage(Handler.java:99)
03-15 01:02:22.794: I/TestRunner(8775): at android.os.Looper.loop(Looper.java:137)
03-15 01:02:22.794: I/TestRunner(8775): at android.app.ActivityThread.main(ActivityThread.java:5039)
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 01:02:22.794: I/TestRunner(8775): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 01:02:22.794: I/TestRunner(8775): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-15 01:02:22.794: I/TestRunner(8775): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-15 01:02:22.794: I/TestRunner(8775): at dalvik.system.NativeStart.main(Native Method)
03-15 01:02:22.794: I/TestRunner(8775): Caused by: java.lang.NoClassDefFoundError: com.outridersw.tapinspectandroid.greendao.DaoMaster
03-15 01:02:22.794: I/TestRunner(8775): at com.outridersw.tapinspectandroid.test.LibrarySummaryTest.<init>(LibrarySummaryTest.java:13)
03-15 01:02:22.794: I/TestRunner(8775): ... 18 more
Update:
I was able to run JUnit by copying and pasting the generated classes in greenDAO into my test project. Obviously, this is not ideal, since now I have to remember to update them. Is there a reason JUnit can't find the greenDAO classes, but has no problems seeing all other classes in my target Android project?

It turns out the reason for this error is that I included the greenDAO.jar library in both the main and test Android projects. Once I deleted the jar from the project/libs folder I was able to run JUnit greenDAO tests without an issue!

google maps v2 android

I'm trying to set up google map on an android application.
I saw a lots of qusestions about this error but no one realy answer to my prolem
My error file
03-15 22:32:56.235: D/AndroidRuntime(6713): Shutting down VM
03-15 22:32:56.235: W/dalvikvm(6713): threadid=1: thread exiting with uncaught exception (group=0x415b22a0)
03-15 22:32:56.235: E/AndroidRuntime(6713): FATAL EXCEPTION: main
03-15 22:32:56.235: E/AndroidRuntime(6713): java.lang.RuntimeException: Unable to start activity ComponentInfo{ant.project.myway/ant.project.myway.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2122)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread.access$600(ActivityThread.java:140)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1228)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.os.Handler.dispatchMessage(Handler.java:99)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.os.Looper.loop(Looper.java:137)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread.main(ActivityThread.java:4895)
03-15 22:32:56.235: E/AndroidRuntime(6713): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 22:32:56.235: E/AndroidRuntime(6713): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 22:32:56.235: E/AndroidRuntime(6713): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
03-15 22:32:56.235: E/AndroidRuntime(6713): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
03-15 22:32:56.235: E/AndroidRuntime(6713): at dalvik.system.NativeStart.main(Native Method)
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
03-15 22:32:56.235: E/AndroidRuntime(6713): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:306)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.Activity.setContentView(Activity.java:1912)
03-15 22:32:56.235: E/AndroidRuntime(6713): at ant.project.myway.MainActivity.onCreate(MainActivity.java:11)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.Activity.performCreate(Activity.java:5163)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061)
03-15 22:32:56.235: E/AndroidRuntime(6713): ... 11 more
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and has an empty constructor that is public
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
03-15 22:32:56.235: E/AndroidRuntime(6713): ... 21 more
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment
03-15 22:32:56.235: E/AndroidRuntime(6713): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
03-15 22:32:56.235: E/AndroidRuntime(6713): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
03-15 22:32:56.235: E/AndroidRuntime(6713): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
03-15 22:32:56.235: E/AndroidRuntime(6713): at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
03-15 22:32:56.235: E/AndroidRuntime(6713): ... 24 more
03-15 22:36:00.345: I/Process(6713): Sending signal. PID: 6713 SIG: 9
So this is my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ant.project.myway"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<permission
android:name="ant.project.myway.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="ant.project.myway.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>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="#string/api_key"/>
</application>
</manifest>
My activity
package ant.project.myway;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
And the layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</RelativeLayout>
I saw a lots of posts to correct this problem,
I'm not sure my api key is correct, I'm on ubuntu.
I go to ~/.android, I run
keytool -list -alias androiddebugkey -keystore debug.keystore -storepass android -keypass android
I got my key and I set my_key;ant.project.myway on google console api key
I think this is the correct way
Thanks for your help

The problem you are experiencing is not related to your key in any way, from you logcat output:
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and has an empty constructor that is public
Basically means that at the moment that your layout was instantiated, SupportMapFragment class was not found. what leads me to think that you have a problem with the way you are referencing the google-play-services library.
You can take a look my blog post on how to add a Google map in your application to find more information.

If you have generate key with the help of "ant.project.myway" packeage naem then you should use only this package name in the permission tag.
Please try this...
<permission
android:name="ant.project.myway.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
Also use android:name instead of class attribute
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
Also add this permission in your manifest
<uses-permission android:name="ant.project.myway.permission.MAPS_RECEIVE" />

Add this in your activity:
GoogleMap map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

Getting java.lang.NullPointerException In Android webView

I am working on an application in which i scan a QR code and using that I am opening the pdf related to it.
THIS IS MY CODE
if(uri.contains("abc"))
{
WebView webview= new WebView(getApplicationContext());
webview.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("http://docs.google.com/gview?embedded=true&url=" + uri);
but my application is crashing and i am getting java.lang.NullPointerException.
Please Help me. every help will be appreciated.
HERE IS MY ERROR LOG
03-15 18:26:03.150: I/Adreno200-EGLSUB(4541): <ConfigWindowMatch:2081>: Format RGBA_8888.
03-15 18:26:03.160: D/memalloc(4541): /dev/pmem: Mapped buffer base:0x519b7000 size:3010560 offset:2396160 fd:66
03-15 18:26:03.610: D/CameraConfigurationManager(4541): Default preview format: 17/yuv420sp
03-15 18:26:03.610: D/CameraConfigurationManager(4541): Screen resolution: Point(480, 320)
03-15 18:26:03.610: D/CameraConfigurationManager(4541): preview-size-values parameter: 640x480,640x368,512x288,384x288,352x288,320x240,176x144
03-15 18:26:03.610: D/CameraConfigurationManager(4541): Camera resolution: Point(512, 288)
03-15 18:26:03.620: D/CameraConfigurationManager(4541): Setting preview size: Point(512, 288)
03-15 18:26:03.780: D/CameraManager(4541): Calculated framing rect: Rect(60, 40 - 420, 280)
03-15 18:26:03.900: D/memalloc(4541): /dev/pmem: Mapped buffer base:0x51f16000 size:6184960 offset:5570560 fd:72
03-15 18:26:04.100: D/memalloc(4541): /dev/pmem: Mapped buffer base:0x525fc000 size:1843200 offset:1228800 fd:75
03-15 18:26:05.140: D/-heap(4541): GC_FOR_ALLOC freed 1322K, 22% free 6798K/8611K, paused 82ms
03-15 18:26:06.340: D/DecodeHandler(4541): Found barcode in 267 ms
03-15 18:26:06.360: D/-heap(4541): GC_FOR_ALLOC freed 1363K, 24% free 6817K/8867K, paused 19ms
03-15 18:26:06.380: D/CaptureActivityHandler(4541): Got decode succeeded message
03-15 18:26:06.530: D/MediaPlayer(4541): start() mUri is null
03-15 18:26:08.510: W/dalvikvm(4541): threadid=1: thread exiting with uncaught exception (group=0x40af39f0)
03-15 18:26:08.520: E/AndroidRuntime(4541): FATAL EXCEPTION: main
03-15 18:26:08.520: E/AndroidRuntime(4541): java.lang.NullPointerException
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.ViewConfiguration.get(ViewConfiguration.java:333)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.View.<init>(View.java:2711)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.View.<init>(View.java:2757)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.ViewGroup.<init>(ViewGroup.java:419)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.widget.AbsoluteLayout.<init>(AbsoluteLayout.java:52)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.webkit.WebView.<init>(WebView.java:1092)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.webkit.WebView.<init>(WebView.java:1075)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.webkit.WebView.<init>(WebView.java:1064)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.webkit.WebView.<init>(WebView.java:1054)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.webkit.WebView.<init>(WebView.java:1045)
03-15 18:26:08.520: E/AndroidRuntime(4541): at com.google.zxing.client.android.result.URIResultHandler.handleButtonPress(URIResultHandler.java:146)
03-15 18:26:08.520: E/AndroidRuntime(4541): at com.google.zxing.client.android.result.ResultButtonListener.onClick(ResultButtonListener.java:38)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.View.performClick(View.java:3528)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.view.View$PerformClick.run(View.java:14235)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.os.Handler.handleCallback(Handler.java:605)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.os.Handler.dispatchMessage(Handler.java:92)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.os.Looper.loop(Looper.java:137)
03-15 18:26:08.520: E/AndroidRuntime(4541): at android.app.ActivityThread.main(ActivityThread.java:4424)
03-15 18:26:08.520: E/AndroidRuntime(4541): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 18:26:08.520: E/AndroidRuntime(4541): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 18:26:08.520: E/AndroidRuntime(4541): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
03-15 18:26:08.520: E/AndroidRuntime(4541): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
03-15 18:26:08.520: E/AndroidRuntime(4541): at dalvik.system.NativeStart.main(Native Method)

Your WebView is flowing in air. Attach it to view hierarchy before doing anything or create webview via xml layout.

Inflate Error on Google Maps v2

I try to add a Google Map to my application and using this tutorial I generated API code, added all necessary meta data, permissions etc. Whenever i click the button to start a new activity the app crashes on my Galaxy S3
onClickListener
Button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (v == Button) {
startActivity(new Intent(MainActivity.this, ShowMap.class));
}
}
});
Map class
public class ShowMap extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.show_map);
}
}
show_map.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"/>
Error
03-15 20:14:51.825: E/AndroidRuntime(18318): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.appname.subappname/com.appname.subappname.ShowMap}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread.access$600(ActivityThread.java:140)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.os.Handler.dispatchMessage(Handler.java:99)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.os.Looper.loop(Looper.java:137)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread.main(ActivityThread.java:4898)
03-15 20:14:51.825: E/AndroidRuntime(18318): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 20:14:51.825: E/AndroidRuntime(18318): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 20:14:51.825: E/AndroidRuntime(18318): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
03-15 20:14:51.825: E/AndroidRuntime(18318): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
03-15 20:14:51.825: E/AndroidRuntime(18318): at dalvik.system.NativeStart.main(Native Method)
03-15 20:14:51.825: E/AndroidRuntime(18318): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
03-15 20:14:51.825: E/AndroidRuntime(18318): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.Activity.setContentView(Activity.java:1924)
03-15 20:14:51.825: E/AndroidRuntime(18318): at com.appname.subappname.ShowMap.onCreate(ShowMap.java:11)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.Activity.performCreate(Activity.java:5206)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
03-15 20:14:51.825: E/AndroidRuntime(18318): ... 11 more
03-15 20:14:51.825: E/AndroidRuntime(18318): Caused by: java.lang.ClassCastException: com.google.android.gms.maps.MapFragment cannot be cast to android.support.v4.app.Fragment
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.support.v4.app.Fragment.instantiate(Fragment.java:394)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
03-15 20:14:51.825: E/AndroidRuntime(18318): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
03-15 20:14:51.825: E/AndroidRuntime(18318): ... 20 more

The class com.google.android.gms.maps.MapFragment is not found. Check if library google-play-services_lib is properly linked to the project.

your ShowMap should extends FragmentActivity for this to work not Activity , check the examples included in google-play-sevice library for google maps they are a big help.
Edit
make sure you are including google-play-service library project, as the exception is ClassNotFoundException: com.google.android.gms.maps.MapFragment
check this link on how to include the library project

Crash in application. RuntimeException: Unable to start activity [closed]

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Closed 10 years ago.
I got a crash on my application android.
logcat error:
07-09 12:00:46.486: D/dalvikvm(249): GC freed 613 objects / 50984 bytes in 89ms
07-09 12:00:49.944: D/dalvikvm(249): GC freed 2700 objects / 118760 bytes in 76ms
07-09 12:00:50.406: D/AndroidRuntime(249): Shutting down VM
07-09 12:00:50.406: W/dalvikvm(249): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
07-09 12:00:50.417: E/AndroidRuntime(249): Uncaught handler: thread main exiting due to uncaught exception
07-09 12:00:50.444: E/AndroidRuntime(249): java.lang.RuntimeException: Unable to start activity ComponentInfo{allo.nascubetest/allo.nascubetest.MainActivity2}: java.lang.NullPointerException
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.os.Handler.dispatchMessage(Handler.java:99)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.os.Looper.loop(Looper.java:123)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.main(ActivityThread.java:4363)
07-09 12:00:50.444: E/AndroidRuntime(249): at java.lang.reflect.Method.invokeNative(Native Method)
07-09 12:00:50.444: E/AndroidRuntime(249): at java.lang.reflect.Method.invoke(Method.java:521)
07-09 12:00:50.444: E/AndroidRuntime(249): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-09 12:00:50.444: E/AndroidRuntime(249): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-09 12:00:50.444: E/AndroidRuntime(249): at dalvik.system.NativeStart.main(Native Method)
07-09 12:00:50.444: E/AndroidRuntime(249): Caused by: java.lang.NullPointerException
07-09 12:00:50.444: E/AndroidRuntime(249): at allo.nascubetest.MainActivity2.onCreate(MainActivity2.java:111)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-09 12:00:50.444: E/AndroidRuntime(249): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
07-09 12:00:50.444: E/AndroidRuntime(249): ... 11 more
07-09 12:00:50.454: I/dalvikvm(249): threadid=7: reacting to signal 3
07-09 12:00:50.554: I/dalvikvm(249): Wrote stack trace to '/data/anr/traces.txt'
07-09 12:00:52.084: I/Process(249): Sending signal. PID: 249 SIG: 9
in my OnCreate:
Intent thisIntent = getIntent();
date = thisIntent.getExtras().getString("date");
and my line 111:
labelDate.setText(date);

You are accessing a null variable in line 111 in file MainActivity2.java .
Check what you wrote there.
From your code it seems that either labelDate is null or date is null.
Verify you have values in them , you can also debug.
In general, it seems best if you do some tutorial from developer.android.com .

Check out with this code:
Bundle bundle=getIntent().getExtras();
if(bundle!=null){
String date=bundle.getString("date");
labelDate.setText(date);
}
hope this will help you.

your date object is null in line 111, b'coz your intent may not have key named as date or the value will be null.
To prevent from this exception:
make sure that labelDate is not null
make sure that date object is not null before assign to setText();
ex:
if (date != null)
labelDate.setText(date);