Google Maps Android API v2 tutorial -
i'm working on tutorial google maps android api v2 @ : https://developers.google.com/maps/documentation/android/start
i'm trying simple map shown in app, yet it's not working (the app doesn't open, , there's message box "the "test2" application has stopped.") , don't know why. followed said in tutorial.
here's code :
androidmanifest.xml :
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.test2" android:versioncode="1" android:versionname="1.0" > <uses-sdk android:minsdkversion="8" android:targetsdkversion="17" /> <permission android:name="com.example.test2.permission.maps_receive" android:protectionlevel="signature"/> <uses-permission android:name="com.example.test2.permission.maps_receive"/> <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"/> <uses-permission android:name="android.permission.access_coarse_location"/> <uses-permission android:name="android.permission.access_fine_location"/> <uses-feature android:glesversion="0x00020000" android:required="true"/> <application android:allowbackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/apptheme" > <activity android:name="com.example.test2.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="the key"/> </application> </manifest> activity_main.xml :
<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"/> mainactivity.java :
package com.example.test2; import android.os.bundle; import android.app.activity; import android.view.menu; public class mainactivity extends activity { @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); } @override public boolean oncreateoptionsmenu(menu menu) { // inflate menu; adds items action bar if present. getmenuinflater().inflate(r.menu.main, menu); return true; } } thank in advance.
edit :
here's logcat :
04-09 11:58:31.689: e/androidruntime(4028): fatal exception: main 04-09 11:58:31.689: e/androidruntime(4028): java.lang.runtimeexception: unable start activity componentinfo{com.example.test2/com.example.test2.mainactivity}: android.view.inflateexception: binary xml file line #1: error inflating class fragment 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread.performlaunchactivity(activitythread.java:2059) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread.handlelaunchactivity(activitythread.java:2084) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread.access$600(activitythread.java:130) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread$h.handlemessage(activitythread.java:1195) 04-09 11:58:31.689: e/androidruntime(4028): @ android.os.handler.dispatchmessage(handler.java:99) 04-09 11:58:31.689: e/androidruntime(4028): @ android.os.looper.loop(looper.java:137) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread.main(activitythread.java:4745) 04-09 11:58:31.689: e/androidruntime(4028): @ java.lang.reflect.method.invokenative(native method) 04-09 11:58:31.689: e/androidruntime(4028): @ java.lang.reflect.method.invoke(method.java:511) 04-09 11:58:31.689: e/androidruntime(4028): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786) 04-09 11:58:31.689: e/androidruntime(4028): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:553) 04-09 11:58:31.689: e/androidruntime(4028): @ dalvik.system.nativestart.main(native method) 04-09 11:58:31.689: e/androidruntime(4028): caused by: android.view.inflateexception: binary xml file line #1: error inflating class fragment 04-09 11:58:31.689: e/androidruntime(4028): @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:704) 04-09 11:58:31.689: e/androidruntime(4028): @ android.view.layoutinflater.inflate(layoutinflater.java:466) 04-09 11:58:31.689: e/androidruntime(4028): @ android.view.layoutinflater.inflate(layoutinflater.java:396) 04-09 11:58:31.689: e/androidruntime(4028): @ android.view.layoutinflater.inflate(layoutinflater.java:352) 04-09 11:58:31.689: e/androidruntime(4028): @ com.android.internal.policy.impl.phonewindow.setcontentview(phonewindow.java:256) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activity.setcontentview(activity.java:1867) 04-09 11:58:31.689: e/androidruntime(4028): @ com.example.test2.mainactivity.oncreate(mainactivity.java:12) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activity.performcreate(activity.java:5008) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1079) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activitythread.performlaunchactivity(activitythread.java:2023) 04-09 11:58:31.689: e/androidruntime(4028): ... 11 more 04-09 11:58:31.689: e/androidruntime(4028): caused by: android.app.fragment$instantiationexception: unable instantiate fragment com.google.android.gms.maps.supportmapfragment: make sure class name exists, public, , has empty constructor public 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.fragment.instantiate(fragment.java:584) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.fragment.instantiate(fragment.java:552) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.activity.oncreateview(activity.java:4656) 04-09 11:58:31.689: e/androidruntime(4028): @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:680) 04-09 11:58:31.689: e/androidruntime(4028): ... 20 more 04-09 11:58:31.689: e/androidruntime(4028): caused by: java.lang.classnotfoundexception: com.google.android.gms.maps.supportmapfragment 04-09 11:58:31.689: e/androidruntime(4028): @ dalvik.system.basedexclassloader.findclass(basedexclassloader.java:61) 04-09 11:58:31.689: e/androidruntime(4028): @ java.lang.classloader.loadclass(classloader.java:501) 04-09 11:58:31.689: e/androidruntime(4028): @ java.lang.classloader.loadclass(classloader.java:461) 04-09 11:58:31.689: e/androidruntime(4028): @ android.app.fragment.instantiate(fragment.java:574) 04-09 11:58:31.689: e/androidruntime(4028): ... 23 more
the problem see here line:
<uses-library android:name="com.google.android.maps" /> this line belong google map api v1 , shouldn't written in google map api v2.
we can't more without logcat output.
update:
if pasted right manifest file current problem is:
1. developing application min sdk 8 have use supportmapfragment instead of mapfragment object in xml layout file of activity. this:
<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.supportmapfragment"/> you can take @ blog post wrote on how add google map api v2 application:
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