1

所有代码工作正常：

public View getView(int position, View convertView, ViewGroup parent) {

    LayoutInflater inflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View row = inflater.inflate(R.layout.activity_contacts_detail_row_layout, parent, false);
    ImageView smsLogo = (ImageView) row.findViewById(R.id.sms_logo);
    smsLogo.setClickable(true);
    smsLogo.setTag(position);
    if (contactsRow.isSMSApproved == true) smsLogo.setImageResource(R.drawable.messages_green);
    else smsLogo.setImageResource(R.drawable.messages_red);

直到那一行：

smsLogo.setImageResource(....)

日志猫：

10-29 22:46:34.006: E/AndroidRuntime(935): java.lang.NullPointerException 10-29 22:46:34.006: E/AndroidRuntime(935): at com.callsfreecalls.android.ContactsDetailArrayAdapter.getView(ContactsDetailArrayAdapter. java:107) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget.AbsListView.obtainView(AbsListView.java:1409) 10-29 22:46:34.006: E/AndroidRuntime(935) : 在 android.widget.ListView.measureHeightOfChildren(ListView.java:1216) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget.ListView.onMeasure(ListView.java:1127) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.view.View.measure(View.java:8313) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget.RelativeLayout .measureChild(RelativeLayout.java:566) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget。RelativeLayout.onMeasure(RelativeLayout.java:381) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.view.View.measure(View.java:8313) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget.FrameLayout.onMeasure(FrameLayout.java :250) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.view.View.measure(View.java:8313) 10-29 22:46:34.006: E/AndroidRuntime(935):在 android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 10-29 22 ：46：34.006：E / AndroidRuntime（935）：在android.view.View.measure（View.java：8313）10-29 22：46：34.006：E / AndroidRuntime（935）：在android。view.ViewRoot.performTraversals(ViewRoot.java:839) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.view.ViewRoot.handleMessage(ViewRoot.java:1859) 10-29 22:46: 34.006: E/AndroidRuntime(935): 在 android.os.Handler.dispatchMessage(Handler.java:99) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.os.Looper.loop(Looper .java:130) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 android.app.ActivityThread.main(ActivityThread.java:3683) 10-29 22:46:34.006: E/AndroidRuntime(935 ): 在 java.lang.reflect.Method.invokeNative(Native Method) 10-29 22:46:34.006: E/AndroidRuntime(935): 在 java.lang.reflect.Method.invoke(Method.java:507) 10 -29 22:46:34.006: E/AndroidRuntime(935): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 10-29 22:46:34.006: E/AndroidRuntime(935 ): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)

行布局：

<ImageView
    android:id="@+id/sms_logo"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_marginRight="6dip"
    android:src="@drawable/messages_green" />

<ImageView
    android:id="@+id/callLogo"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_marginLeft="60dp"
    android:layout_marginTop="-60dp"
    android:src="@drawable/callbuttonred" />

<TextView
    android:id="@+id/contactsDetailData"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="120dp"
    android:layout_marginTop="-43dp"
    android:gravity="center"
    android:shadowColor="#FFFFFFFF"
    android:shadowDx="1"
    android:shadowDy="1"
    android:shadowRadius="1"
    android:text="+380674878717"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="#FF64396F" />

这是代码创建：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_contacts_detail);
    bar = ((ProgressBar) findViewById(R.id.progressContactDetailsUpdate));
    bar.setVisibility(View.VISIBLE);

    contactsDetailsForUsing = this;
    adapterDetails = new ContactsDetailArrayAdapter(getApplicationContext(), R.layout.activity_contacts_detail_row_layout);
    lvContactDetails = (ListView) findViewById(R.id.listContactsDetailView);
    lvContactDetails.setAdapter(adapterDetails);
4

2 回答 2

1

我怀疑问题在于布局膨胀：

View row = inflater.inflate(R.layout.activity_contacts_detail_row_layout, parent, false);

我不确定，但parent可能为空。尝试使用这个：

View row = inflater.inflate(R.layout.activity_contacts_detail_row_layout, null);

更新：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
    <!-- your three views: -->
    <ImageView  .... />
    <ImageView  .... />
    <TextView   .... />
</LinearLayout>
于 2012-10-29T21:06:38.697 回答
0

contactsRow.isSMSApproved - isSMSApproved 为空。令我惊讶的是，原语必须在 java 中初始化......

于 2012-10-29T21:35:15.953 回答