Android : layout _ width=' match _ parent ' Android 3360 layout _ height=' match _ parent ' Android 3360 orientation=p 0layout_height='wrap_content'/p Android 3360 id=' @ @ textview3' Android : layout _ width=' wrap _ content ' Android 3360 layout _ height=' wrap _ ccth onstituency' //p Android : layout _ width=' wrap _ content ' Android : layout _ height=' 2d IP ' Android 3360 layout _ margin left=d nd='#000000'/p Android : layout _ width=' wrap _ content ' Android 3360 layout _ height=' wrap _ content ' Android 3360 layout _ manate p Android 3360 layout _ width=' 3dp ' Android 3360 layout _ height=' 40dp ' p Android 3360 id=' @ id/textview 04 ' Android : layout _ width=' wrap _ content ' Android 3360 layout _ height=' wrap _ content ' Android 3360 tood setContentView (振动的蜜粉，)设置为setcontentview (r.layout.activity _ mint view，现在我想在启动APP应用程序时将“内容”视图设置为sample.xml 我已经setcontentview(r.layout.sample )； 我运行APP应用的时候，很遗憾APP应用失败了！ 错误。
如果我调试，它将显示一定的空指针异常。 这是我的logcat。 04-040336055336040.691: d/Android runtime (2174 ) : Shutting down充足的棉花糖/pcmdswp 04-040:5:40.6913: w pcmdswp 04-0403 :40 3360 threadid=1: threadexitingwithuncaughtexception (group=0x40a 71930 ) 04-0333:53:40.710 androidrunnd 33660 fatal exception : main 04-04033605336040.7113360 e/安卓运行时652174 ) ) 0: fatal exception : main 04-0403 :40 3360 Java.lang.runtime exception 3360 unabletostartation ive app/com.example.live app } 3360 Java.lang.yld DC/pcmdswp 04-040:5336040.711: e/安卓运行时652174 ) 3360 Java.lang 3360 at安卓. app.activity thread.performlaunchactivity (activity thread.Java 3360600 at Android.app.activity thread.handlelaunchactivity (activity thread.Java 33602230 (04-040:5336040.71133333330 330 360 at activity thread.Java :141 (04033605336040.711: e/and droid 3360 at Android.app.activity thread $ h.handle message (activity thread.Java :1234 ) 04-0403:5:40.711133 essage(Handler.Java:99 ) 04-0:5336040.711: e/Android runtime ) ) 04， 0:5:40.71113: e ) 652 3360 at Android.OS.looper.loop (looper.Java :137 ) 04-040:5:40.7111333: 3360 at Android.app.activity thread.main (activity thread.Java :5041 (040:5:40.711: e/安卓3360 at Java.lang.reflect.method.invoke native (native method (040:5336040.711: e/安卓运行时(Androidruntime ) 21773605336040.711: 3360 at Java.lang.reflect.method.invoke (method.Java :511 ) 04-033:50505 0:5:40.711113: e652.Android.internal.OS.zygote init $ methodandargscaller.run (zygote init.jinit ) 3 3360 atcom.Android.internal.OS.zygote init.main (zygote init.Java :560 ) 04-040:5336040.711:e/Android 3360 atdalvik.system.native start.main (native method (040:5336040.7113360 e/Android runtime ) 2174 ) 3360 PMP 安卓运行时(2174 ) : atcom.example.live app.main activity.oncreate ) )。 04-040:55336040.711: e/Android运行时(2174 ) : at Android.app.activity.perform create (activity.Java 336 ) 安卓运行时(2174 ) : at安卓. app.instrumentation.callactivityoncreate (instrumentation.callactivityoncreation 安卓运行时(2174 ) : at安卓. app.activity thread.performlaunchactivity (AC ctivity ) activity 04-040:553366 publicclassmainactivityextendsactivity { publicfinalandroid.content.context context=main activity.this； protectedvoidoncreate (bundlesavedinstancestate ) super.oncreate ) savedinstancestate； finallinearlayoutsamplelayout=(linear layout ) findviewbyid(r.layout.sample )； setcontentview (r.layout.sample layout； }我的代码有什么错？ 救命！ 2013-04-04我可以发布俏皮的小猫/pcmdswp 0代码(java代码)吗？ 日志？ 2013-04-040336053360310 theres没有问题。 你的xml，它适用于我。 您的代码发行-2013-04-040:57336051和我的代码。 2013-04-0404336004336031