布局没有正确膨胀

时间：2013-01-06 20:05:35

标签： android android-fragments layout-inflater

当我运行我的应用程序时，我收到此错误：

01-06 15:00:42.865: E/AndroidRuntime(24230): FATAL EXCEPTION: main
01-06 15:00:42.865: E/AndroidRuntime(24230): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fotolife.app/com.fotolife.app.MainView}: android.view.InflateException: Binary XML file line #8: Error inflating class com.google.android.maps.MapView
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread.access$600(ActivityThread.java:140)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.os.Looper.loop(Looper.java:137)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread.main(ActivityThread.java:4898)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at java.lang.reflect.Method.invokeNative(Native Method)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at java.lang.reflect.Method.invoke(Method.java:511)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at dalvik.system.NativeStart.main(Native Method)
01-06 15:00:42.865: E/AndroidRuntime(24230): Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class com.google.android.maps.MapView
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.createView(LayoutInflater.java:613)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.fotolife.app.Map.onCreateView(Map.java:12)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:871)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:523)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1178)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.Activity.performStart(Activity.java:5201)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2073)
01-06 15:00:42.865: E/AndroidRuntime(24230):    ... 11 more
01-06 15:00:42.865: E/AndroidRuntime(24230): Caused by: java.lang.reflect.InvocationTargetException
01-06 15:00:42.865: E/AndroidRuntime(24230):    at java.lang.reflect.Constructor.constructNative(Native Method)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at android.view.LayoutInflater.createView(LayoutInflater.java:587)
01-06 15:00:42.865: E/AndroidRuntime(24230):    ... 24 more
01-06 15:00:42.865: E/AndroidRuntime(24230): Caused by: java.lang.IllegalArgumentException: MapViews can only be created inside instances of MapActivity.
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.google.android.maps.MapView.<init>(MapView.java:291)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.google.android.maps.MapView.<init>(MapView.java:264)
01-06 15:00:42.865: E/AndroidRuntime(24230):    at com.google.android.maps.MapView.<init>(MapView.java:247)
01-06 15:00:42.865: E/AndroidRuntime(24230):    ... 27 more

它说错误发生在这个文件的第12行：

package com.fotolife.app;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Map extends Fragment {

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.map, container, false);
    }

}

第12行是：return inflater.inflate .....

这是片段应该膨胀的xml文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <com.google.android.maps.MapView
        android:layout_width="match_parent" 
        android:layout_height="match_parent"
        android:enabled="true"
        android:clickable="true"
        android:apiKey="@string/maps_api_key"
        />

</LinearLayout>

2 个答案:

答案 0 :(得分：1)

这是你的错误：

01-06 15:00:42.865: E/AndroidRuntime(24230): Caused by: java.lang.IllegalArgumentException: MapViews can only be created inside instances of MapActivity.

您不能将MapView与片段一起使用，因为要使用片段，您的Activity必须是Activity（v11 +）或FragmentActivity的子类，但要使用MapView您的活动必须是MapActivity的子类。

如果您想同时使用地图和片段，则需要使用包含Google Play Services Maps API（v11 +）或MapFragment的SupportMapFragment。

答案 1 :(得分：0)

我之前从未使用过谷歌地图Android API，但查看了你的堆栈跟踪：

01-06 15:00:42.865: E/AndroidRuntime(24230): Caused by: java.lang.IllegalArgumentException: MapViews can only be created inside instances of MapActivity.

您的活动需要延长MapActivity。如果要使用片段，也许应该使用新的V2 API。 https://developers.google.com/maps/documentation/android/

由于您的布局仅包含MapView，您是否考虑使用SupportMapFragment代替：

<fragment
    class="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

或

SupportMapFragment f = new SupportMapFragment();
getSupportFragmentManager().beingTransaction()
    .add(android.R.id.content, f)
    .commit();

请参阅文档：https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/SupportMapFragment

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