我正在尝试创建一个简单的Map View应用程序。我浏览了android developers documentation并复制了粘贴的 MyActivity.java 类和 activity_main.xml 布局。当我开始使用我的真实设备(Android v2.3.6)时,该应用程序正在崩溃。包浏览器,清单文件和logcat错误如下所示。
MainActivity.java:
package com.timur.mapapplication;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
activity_main.xml中:
<?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"/>
的AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.timur.mapapplication"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<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" >
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name="com.timur.mapapplication.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>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDQ4pnYq3on6WFJsE..." />
</manifest>
LOGCAT错误:
12-18 00:03:05.626: E/AndroidRuntime(18591): FATAL EXCEPTION: main
12-18 00:03:05.626: E/AndroidRuntime(18591): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.timur.mapapplication/com.timur.mapapplication.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.os.Handler.dispatchMessage(Handler.java:99)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.os.Looper.loop(Looper.java:130)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread.main(ActivityThread.java:3693)
12-18 00:03:05.626: E/AndroidRuntime(18591): at java.lang.reflect.Method.invokeNative(Native Method)
12-18 00:03:05.626: E/AndroidRuntime(18591): at java.lang.reflect.Method.invoke(Method.java:507)
12-18 00:03:05.626: E/AndroidRuntime(18591): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
12-18 00:03:05.626: E/AndroidRuntime(18591): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
12-18 00:03:05.626: E/AndroidRuntime(18591): at dalvik.system.NativeStart.main(Native Method)
12-18 00:03:05.626: E/AndroidRuntime(18591): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
12-18 00:03:05.626: E/AndroidRuntime(18591): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:215)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.Activity.setContentView(Activity.java:1663)
12-18 00:03:05.626: E/AndroidRuntime(18591): at com.timur.mapapplication.MainActivity.onCreate(MainActivity.java:11)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
12-18 00:03:05.626: E/AndroidRuntime(18591): ... 11 more
12-18 00:03:05.626: E/AndroidRuntime(18591): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.timur.mapapplication-1.apk]
12-18 00:03:05.626: E/AndroidRuntime(18591): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
12-18 00:03:05.626: E/AndroidRuntime(18591): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
12-18 00:03:05.626: E/AndroidRuntime(18591): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.createView(LayoutInflater.java:471)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
12-18 00:03:05.626: E/AndroidRuntime(18591): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
12-18 00:03:05.626: E/AndroidRuntime(18591): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
12-18 00:03:05.626: E/AndroidRuntime(18591): ... 19 more
感谢您的帮助。
答案 0 :(得分:3)
当MapFragment
设置为8时,您正在使用minSdkVersion
。您应该使用SupportMapFragment
,而不是这样:
<?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.SupportMapFragment"/>
另外,只是一个建议,不要发布你的API密钥,它应该保持私密,无论是谁在开发应用程序。
答案 1 :(得分:1)
正如Emmanuel建议的那样,将MapFragment更改为SupportMapFragment。
添加它,在java类中扩展FragmentActivity而不是Activity。看看它现在是否有效。