Android 膨胀类-CircularImageView时出错

我正在尝试在我的android应用程序中使用project

我的list_style.xml如下所示

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/libs/circularimageview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >

<com.mikhaellopez.circularimageview.CircularImageView
    android:layout_width="48dp"
    android:layout_height="48dp"
    android:src="@drawable/kamilwirtek"
    android:layout_gravity="left"
    android:layout_margin="10dp"
    android:id="@+id/avatar"
    app:border="true"
    app:border_color="#000000"
    app:border_width="4dp"
    app:shadow="true" />

<TextView
    android:id="@+id/full_name"
    android:layout_gravity="center"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="25dp"
    android:textColor="#111111"
    android:text="TextView" />

</LinearLayout>

我在处理碎片。当我添加到onCreateView时：

CircularImageView circularImageView = (CircularImageView)getActivity().findViewById(R.id.avatar);
circularImageView.setBorderColor(getResources().getColor(R.color.GrayLight));
circularImageView.setBorderWidth(10);
circularImageView.addShadow(); 

我收到另一个代码错误：

09-12 21:41:21.359    8783-8783/info.androidhive.materialdesign E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.RuntimeException: Unable to start activity ComponentInfo{info.androidhive.materialdesign/info.androidhive.materialdesign.activity.MainActivity}: java.lang.NullPointerException
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
            at android.app.ActivityThread.access$600(ActivityThread.java:130)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4745)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
            at info.androidhive.materialdesign.activity.HomeFragment.onCreateView(HomeFragment.java:42)
            at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
            at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
            at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
            at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:551)
            at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1163)
            at android.app.Activity.performStart(Activity.java:5018)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2032)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
            at android.app.ActivityThread.access$600(ActivityThread.java:130)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4745)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)

---

怎么了？如何修复此问题？

您正在尝试从活动的视图而不是片段的视图获取视图

而不是：

CircularImageView circularImageView = (CircularImageView)getActivity().findViewById(R.id.avatar);

你应该这样做

CircularImageView circularImageView = (CircularImageView)view.findViewById(R.id.avatar);

---

在fragment的

Hm上，我使用了rootView而不是View，否则我会得到错误：（58,41）错误：非静态方法findViewById（int）不能从静态上下文中引用，而rootView我会得到错误：这是我的fragment@alexstyle的全部代码，在您刚才共享的代码中，首先使用rootview，然后填充它。将CircularImageView移动到RootView填充之后，如下所示？现在我得到了@AlexStyl

CircularImageView circularImageView = (CircularImageView)view.findViewById(R.id.avatar);