我试图JSON内容加载到含有图片和文字列表视图,但我排队154 Actualities.class即lv1.setAdapter(efficienadapter);
得到一个NullPointerException
“。NullPointerException异常而加载和显示JSON内容到一个ListView
我不知道它是因为postlist is null or an error in my code.
有人能帮助我,请
我Actualites类 android.widget.TabHost.setCurrentTab(TabHost.java:329)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:133)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:456)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.view.View.performClick(View.java:2538)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.view.View$PerformClick.run(View.java:9152)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.os.Handler.handleCallback(Handler.java:587)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.os.Handler.dispatchMessage(Handler.java:92)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.os.Looper.loop(Looper.java:130)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.app.ActivityThread.main(ActivityThread.java:3687)
01-24 13:03:44.741: E/AndroidRuntime(4357): at java.lang.reflect.Method.invokeNative(Native Method)
01-24 13:03:44.741: E/AndroidRuntime(4357): at java.lang.reflect.Method.invoke(Method.java:507)
01-24 13:03:44.741: E/AndroidRuntime(4357): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
01-24 13:03:44.741: E/AndroidRuntime(4357): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
01-24 13:03:44.741: E/AndroidRuntime(4357): at dalvik.system.NativeStart.main(Native Method)
01-24 13:03:44.741: E/AndroidRuntime(4357): Caused by: java.lang.NullPointerException
01-24 13:03:44.741: E/AndroidRuntime(4357): at fr.dtweb.gpf.Actualites.onCreate(Actualites.java:154)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-24 13:03:44.741: E/AndroidRuntime(4357): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
01-24 13:03:44.741: E/AndroidRuntime(4357): ... 18 more
其中处于Actualites.java –
行号154 @ lv1.setAdapter(efficienadapter); – Dimitri
你是否在System.out.println(“size:”+ PostList.size())中获得PostList大小;线? –