使用GOOGLE MAP API的简单android程序

试图在谷歌地图上工作

• 这是我使用谷歌地图API的第一个程序
• 由于日志错误，我无法执行
• 我需要纠正自己的地方

MainActivity.java

public class MainActivity extends Activity { // Google Map private GoogleMap googleMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); try { // Loading map initilizeMap(); } catch (Exception e) { e.printStackTrace(); } } /** * function to load map. If map is not created it will create it for you * */ private void initilizeMap() { if (googleMap == null) { googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap(); // check if map is created successfully or not if (googleMap == null) { Toast.makeText(getApplicationContext(), "Sorry! unable to create maps", Toast.LENGTH_SHORT) .show(); } } } @Override protected void onResume() { super.onResume(); initilizeMap(); } } 

activity_main.xml中

表现

UPDATED_XML

更新过的-LOG

 10-17 10:57:50.547: I/dalvikvm(458): Could not find method com.example.googlemaps.MainActivity.getFragmentManager, referenced from method com.example.googlemaps.MainActivity.initilizeMap 10-17 10:57:50.547: W/dalvikvm(458): VFY: unable to resolve virtual method 4829: Lcom/example/googlemaps/MainActivity;.getFragmentManager ()Landroid/app/FragmentManager; 10-17 10:57:50.547: D/dalvikvm(458): VFY: replacing opcode 0x6e at 0x0004 10-17 10:57:50.547: D/dalvikvm(458): VFY: dead code 0x0007-0028 in Lcom/example/googlemaps/MainActivity;.initilizeMap ()V 10-17 10:57:50.627: D/AndroidRuntime(458): Shutting down VM 10-17 10:57:50.627: W/dalvikvm(458): threadid=1: thread exiting with uncaught exception (group=0x40015560) 10-17 10:57:50.657: E/AndroidRuntime(458): FATAL EXCEPTION: main 10-17 10:57:50.657: E/AndroidRuntime(458): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.googlemaps/com.example.googlemaps.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.os.Handler.dispatchMessage(Handler.java:99) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.os.Looper.loop(Looper.java:123) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread.main(ActivityThread.java:3683) 10-17 10:57:50.657: E/AndroidRuntime(458): at java.lang.reflect.Method.invokeNative(Native Method) 10-17 10:57:50.657: E/AndroidRuntime(458): at java.lang.reflect.Method.invoke(Method.java:507) 10-17 10:57:50.657: E/AndroidRuntime(458): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 10-17 10:57:50.657: E/AndroidRuntime(458): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 10-17 10:57:50.657: E/AndroidRuntime(458): at dalvik.system.NativeStart.main(Native Method) 10-17 10:57:50.657: E/AndroidRuntime(458): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.inflate(LayoutInflater.java:408) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 10-17 10:57:50.657: E/AndroidRuntime(458): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.Activity.setContentView(Activity.java:1657) 10-17 10:57:50.657: E/AndroidRuntime(458): at com.example.googlemaps.MainActivity.onCreate(MainActivity.java:19) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 10-17 10:57:50.657: E/AndroidRuntime(458): ... 11 more 10-17 10:57:50.657: E/AndroidRuntime(458): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.example.googlemaps-2.apk] 10-17 10:57:50.657: E/AndroidRuntime(458): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 10-17 10:57:50.657: E/AndroidRuntime(458): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 10-17 10:57:50.657: E/AndroidRuntime(458): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.createView(LayoutInflater.java:471) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549) 10-17 10:57:50.657: E/AndroidRuntime(458): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66) 10-17 10:57:50.657: E/AndroidRuntime(458): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568) 10-17 10:57:50.657: E/AndroidRuntime(458): ... 20 more 

有任何想法吗

谢谢

Answer 1

您必须在xml布局中声明地图的片段类，如下所示：用于在片段中加载GoogleMap 。

您的推荐是否在您的应用程序中添加地图 ？

编辑：

该错误是因为您的应用程序包含低于12的API级别。 请注意，以下代码仅适用于在针对Android API 12或更高版本的应用中测试您的设置。以下代码不应在生产应用中使用。

  googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap(); 

所以请尝试如下：

  mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)) .getMap(); 

Answer 2

只需按照链接作为您的第一个地图应用程序。

http://mobiforge.com/developing/story/developing-with-google-maps-v2-android点击链接并检查1）确保你有谷歌地图v2支持库（添加android-support-v4）和

 public class MainActivity extends FragmentActivity { 

2）检查并修改清单3）在布局中

4）在活动中

 SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map); googleMap = fm.getMap(); 

它将解决您的问题。