从Android中的另一个活动(非主活动)调用自定义ListView时出错?
我的MainActivity文件执行其他一些任务。 AccountInfo用于生成我的列表从Android中的另一个活动(非主活动)调用自定义ListView时出错?,android,listview,sublist,Android,Listview,Sublist,我的MainActivity文件执行其他一些任务。 AccountInfo用于生成我的列表 public class AccountInfo extends Activity { TextView sublistHeadtext; ImageView sublistHeadImage; ListView listItem; String[] ItemViewNames; AccInfoCustomAdapter
public class AccountInfo extends Activity {
TextView sublistHeadtext;
ImageView sublistHeadImage;
ListView listItem;
String[] ItemViewNames;
AccInfoCustomAdapter adapter;
public ArrayList<String> CustomListViewValuesArr = new ArrayList<String>();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sub_list);
int value = getIntent().getExtras().getInt("listpoition");
sublistHeadtext = (TextView) findViewById(R.id.ListItemtext);
sublistHeadtext.setText("Account Information");
sublistHeadImage = (ImageView) findViewById(R.id.ListItemimage);
sublistHeadImage.setImageResource(R.drawable.accinfoimg);
listItem = (ListView) findViewById(R.id.listItem);
ItemViewNames = getResources().getStringArray(R.array.accInfoList);
Log.wtf("AA", "executed !");
/******** Take some data in Arraylist ( CustomListViewValuesArr ) ***********/
setListData();
/**************** Create Custom Adapter *********/
adapter = new AccInfoCustomAdapter(CustomListViewValuesArr,
getBaseContext());
//adapter = new AccInfoCustomAdapter(CustomListViewValuesArr,AccountInfo.this);
Log.wtf("AA", "arrayList : "+CustomListViewValuesArr);
listItem.setAdapter(adapter);
}
/****** Function to set data in ArrayList *************/
public void setListData() {
for (int i = 0; i < ItemViewNames.length; i++)
CustomListViewValuesArr.add(ItemViewNames[i]);
}
}
AdatperFile
日志:
02-18 18:16:46.170: E/AndroidRuntime(16303): FATAL EXCEPTION: main
02-18 18:16:46.170: E/AndroidRuntime(16303): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.xyzbank/com.example.xyzbank.AccountInfo}: java.lang.NullPointerException
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2060)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2085)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.access$600(ActivityThread.java:130)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.os.Handler.dispatchMessage(Handler.java:99)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.os.Looper.loop(Looper.java:137)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.main(ActivityThread.java:4747)
02-18 18:16:46.170: E/AndroidRuntime(16303): at java.lang.reflect.Method.invokeNative(Native Method)
02-18 18:16:46.170: E/AndroidRuntime(16303): at java.lang.reflect.Method.invoke(Method.java:511)
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-18 18:16:46.170: E/AndroidRuntime(16303): at dalvik.system.NativeStart.main(Native Method)
02-18 18:16:46.170: E/AndroidRuntime(16303): Caused by: java.lang.NullPointerException
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.example.xyzbank.AccountInfo.onCreate(AccountInfo.java:45)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.Activity.performCreate(Activity.java:5008)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2024)
02-18 18:16:46.170: E/AndroidRuntime(16303): ... 11 more
尝试将getBaseContext()更改为“this” 到底是什么问题,您没有注意到您的listview id是否正确?嘿,谢谢。。在xml文件中错误地取消了列表id…我尝试了。。但是没有帮助。。面对同样的错误
adapter = new AccInfoCustomAdapter (CustomListViewValuesArr, getBaseContext());
02-18 18:16:46.170: E/AndroidRuntime(16303): FATAL EXCEPTION: main
02-18 18:16:46.170: E/AndroidRuntime(16303): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.xyzbank/com.example.xyzbank.AccountInfo}: java.lang.NullPointerException
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2060)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2085)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.access$600(ActivityThread.java:130)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.os.Handler.dispatchMessage(Handler.java:99)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.os.Looper.loop(Looper.java:137)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.main(ActivityThread.java:4747)
02-18 18:16:46.170: E/AndroidRuntime(16303): at java.lang.reflect.Method.invokeNative(Native Method)
02-18 18:16:46.170: E/AndroidRuntime(16303): at java.lang.reflect.Method.invoke(Method.java:511)
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-18 18:16:46.170: E/AndroidRuntime(16303): at dalvik.system.NativeStart.main(Native Method)
02-18 18:16:46.170: E/AndroidRuntime(16303): Caused by: java.lang.NullPointerException
02-18 18:16:46.170: E/AndroidRuntime(16303): at com.example.xyzbank.AccountInfo.onCreate(AccountInfo.java:45)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.Activity.performCreate(Activity.java:5008)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
02-18 18:16:46.170: E/AndroidRuntime(16303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2024)
02-18 18:16:46.170: E/AndroidRuntime(16303): ... 11 more