我正在一个根深蒂固的 Android 2.3.3 htc 令人难以置信的 S 上编写一个 MMS/SMS 应用程序，带有 2.1。现在，在尝试接收短信/彩信的某个联系人列表时，我在查询中得到了一个 FC。
这是一些代码：
Uri uri = Uri.parse("content://mms-sms/conversations/"+String.valueOf(thread_id));
ContentResolver cr = context.getContentResolver();
Cursor c= cr.query(uri,null,null,null,null); //crashing here
日志猫：
05-22 15:24:24.273: E/AndroidRuntime(32087): FATAL EXCEPTION: main
05-22 15:24:24.273: E/AndroidRuntime(32087): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.uiu.messaging/com.uiu.messaging.ContactMessageChain}: java.lang.NullPointerException
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1816)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1837)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1033)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.os.Handler.dispatchMessage(Handler.java:99)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.os.Looper.loop(Looper.java:143)
05-22 15:24:24.273: E/AndroidRuntime(32087): at android.app.ActivityThread.main(ActivityThread.java:4196)
05-22 15:24:24.273: E/AndroidRuntime(32087): …