帶有Google Maps API的Android ClassNotFoundException

Question

我的家庭活動正在嘗試啟動LocationSetter MapActivity。

以下是家庭活動的相關內容：

            try
        {
            Intent locationSetter = new Intent(Home.this, Class.forName("LocationSetter"));
            startActivity(locationSetter);
            overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
        } catch (ClassNotFoundException e1)
        {
            Log.v(TAG, e1.toString());
        }

此代碼在實例化類變量的行上捕獲了ClassNotFoundException。 我不認為在LocationSetter.class開始引發異常之前不必使用Class.forName（），try catch循環很方便，因為該程序不會每次都崩潰。

接下來是LocationSetter MapActivity：

package com.knox.vicinity;

import android.os.Bundle;
import android.widget.LinearLayout;
import com.google.android.maps.*;

public class LocationSetter extends MapActivity
{

public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.locationsetter);

    MapView mapView = (MapView) findViewById(R.id.mapView);
    mapView.setBuiltInZoomControls(true);
}

public void onBackPressed()
{
    super.onBackPressed();
    overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
}

protected boolean isRouteDisplayed()
{
    return false;
}
}

我認為這段代碼沒有任何問題。

我檢查了清單中是否聲明了我所有的活動和庫：

<?xml version="1.0" encoding="utf-8"?>
<manifest
android:versionCode="1"
android:versionName="1.0"
package="com.knox.vicinity"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<uses-sdk
    android:targetSdkVersion="10" />
<uses-library
    android:name="com.google.android.maps" />
<uses-permission
    android:name="android.permission.INTERNET"
></uses-permission>
<uses-permission
    android:name="android.permission.ACCESS_COARSE_LOCATION"
></uses-permission>
<uses-permission
    android:name="android.permission.ACCESS_FINE_LOCATION"
></uses-permission>
<uses-permission
    android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"
></uses-permission>
<uses-permission
    android:name="android.permission.ACCESS_MOCK_LOCATION"
></uses-permission>
<application
    android:label="@string/app_name"
    android:debuggable="true"
    android:icon="@drawable/ic_launcher_vicinity"
>
    <uses-library
        android:name="com.google.android.maps"
        android:required="true" />
    <activity
        android:name=".Splash"
        android:theme="@android:style/Theme.NoTitleBar"
    >
        <intent-filter>
            <action
                android:name="android.intent.action.MAIN" />
            <category
                android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".Home"
        android:theme="@android:style/Theme.NoTitleBar"
    >
    </activity>
    <activity
        android:name=".LocationSetter"
        android:theme="@android:style/Theme.NoTitleBar"
    ></activity>
</application>
</manifest>

locationsetter.xml：

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:id="@+id/mapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" />

我不知道我在做什么錯。 我有一個使用Google API的10級聲明的Android項目（其中包括google maps庫）。 我沒有相關的警告或日食錯誤。 我很確定我的api密鑰是正確的。

為什么找不到LocationSetter？

提前謝謝。

編輯：

堆棧跟蹤：

08-26 02:04:55.506: ERROR/dalvikvm(15748): Could not find class 'com.knox.vicinity.LocationSetter', referenced from method com.knox.vicinity.Home.onOptionsItemSelected

08-26 02:04:58.905: ERROR/AndroidRuntime(15748): FATAL EXCEPTION: main

08-26 02:04:58.905: ERROR/AndroidRuntime(15748): java.lang.NoClassDefFoundError: com.knox.vicinity.LocationSetter

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.knox.vicinity.Home.onOptionsItemSelected(Home.java:45)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.app.Activity.onMenuItemSelected(Activity.java:2251)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:809)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:143)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:553)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.view.View$PerformClick.run(View.java:9089)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.os.Handler.handleCallback(Handler.java:587)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.os.Handler.dispatchMessage(Handler.java:92)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.os.Looper.loop(Looper.java:123)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at android.app.ActivityThread.main(ActivityThread.java:3806)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at java.lang.reflect.Method.invokeNative(Native Method)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at java.lang.reflect.Method.invoke(Method.java:507)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)

08-26 02:04:58.905: ERROR/AndroidRuntime(15748):     at dalvik.system.NativeStart.main(Native Method)

08-26 02:05:06.842: ERROR/NetStatUtils(15757): The report APN is not in local map, un-match case, fatal error!!

Answer 1

嘗試Intent locationSetter = new Intent(Home.this, LocationSetter.class); 代替

Answer 2

我發現問題出在我的Droid X上運行的扎根rom。在對手機進行SBF處理后，程序應用程序開始運行。