小编Van*_*aBR的帖子

我在我的应用程序中遇到错误"无法实例化活动ComponentInfo".我已经在AndroidManifest.xml中声明了Activity,但我仍然得到错误.我不知道它是什么.有人可以帮忙吗？

谢谢

错误:

    FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{br.com.controladoratividades/br.com.controladoratividades.activities.NovaAtividadeActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
at android.app.ActivityThread.access$2300(ActivityThread.java:125)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.content.ContextWrapper.getResources(ContextWrapper.java:80)
at android.content.Context.getString(Context.java:182)
at br.com.controladoratividades.activities.NovaAtividadeActivity.<init>(NovaAtividadeActivity.java:15)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1429)
at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
... 11 more

我的AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="br.com.controladoratividades"
    android:versionCode="1"
    android:versionName="1.0" >



    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".activities.ControladorAtividadesActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action …