Android应用程序未运行（错误：应用程序意外停止运行。请重试）

这是清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="net.learn2develop.SMSMessaging"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="10" />
    <uses-permission android:name="android.permission.SEND_SMS"></uses-permission>
    <uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".SMS"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

错误部分：-

08-26 23:06:41.040: ERROR/AndroidRuntime(411): FATAL EXCEPTION: main
08-26 23:06:41.040: ERROR/AndroidRuntime(411): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.learn2develop.SMSMessaging/net.learn2develop.SMSMessaging.SMS}: java.lang.NullPointerException
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.os.Looper.loop(Looper.java:123)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.main(ActivityThread.java:3683)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at java.lang.reflect.Method.invokeNative(Native Method)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at java.lang.reflect.Method.invoke(Method.java:507)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at dalvik.system.NativeStart.main(Native Method)
08-26 23:06:41.040: ERROR/AndroidRuntime(411): Caused by: java.lang.NullPointerException
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at net.learn2develop.SMSMessaging.SMS.onCreate(SMS.java:31)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     ... 11 more

---

您在第31行得到一个NullPointerException，这是btnSendSMS.setOnClickListener所在的位置(

可能找不到id为的视图

作为解决方法，添加

if (btnSendSMS != null) {
   btnSendSMS.setOnClickLi......
}

---

发生错误的仿真器针对的是Android 2.3.3版本10 rev 2（姜饼）。抱歉，如果问题是非结构化/非详细的，您可以调试程序吗？从日志中，我得出结论，异常发生在btnSendSMS.setOnClickListener（new View.OnClickListener（）上；第31行到底发生了什么？这是您的问题：在net.learn2develope.SMSMessaging.SMS.onCreate（SMS.java:31）我刚刚尝试了你的代码，它工作正常，没有错误。在sendSMS函数中设置断点，给出phoneNo、message和debug程序的值。如果执行无法达到该值，请检查编辑文本组件中的值。尝试一下。：）我不知道它是如何开始运行的…（可能是在重新启动操作系统后），但未使用此SMS应用程序将SMS发送到另一个仿真器。在安装该应用程序的仿真器上（例如5554），SMS能够发送（到5556），并显示SMS发送成功，但在另一个仿真器上（5556），SMS未发送。请帮助。

08-26 23:06:41.040: ERROR/AndroidRuntime(411): FATAL EXCEPTION: main
08-26 23:06:41.040: ERROR/AndroidRuntime(411): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.learn2develop.SMSMessaging/net.learn2develop.SMSMessaging.SMS}: java.lang.NullPointerException
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.os.Looper.loop(Looper.java:123)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.main(ActivityThread.java:3683)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at java.lang.reflect.Method.invokeNative(Native Method)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at java.lang.reflect.Method.invoke(Method.java:507)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at dalvik.system.NativeStart.main(Native Method)
08-26 23:06:41.040: ERROR/AndroidRuntime(411): Caused by: java.lang.NullPointerException
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at net.learn2develop.SMSMessaging.SMS.onCreate(SMS.java:31)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
08-26 23:06:41.040: ERROR/AndroidRuntime(411):     ... 11 more

if (btnSendSMS != null) {
   btnSendSMS.setOnClickLi......
}