java.lang.RuntimeException : Unable to instantiate service 错误

Question

我正在尝试编写一个监控短信的应用程序。我想从我的主 Activity 类启动一个服务，但由于某种原因该服务没有启动。我认为我如何在 list 文件中声明我的服务或我如何从我的 Activity 中调用它可能存在问题。这是我的 Activity 代码的一部分:

public class TablighBlockActivity extends Activity {
    /** Called when the activity is first created. */
    private ToggleButton toggEnable;

    public void onCreate(Bundle savedInstanceState) {
        if (loadState("running")==false){startService(new Intent(this, SMSMonitor.class));}
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

这是我的服务类的一部分:

public class SMSMonitor extends BroadcastReceiver {


@Override
public void onReceive(Context context, Intent intent) {

    Intent i = new Intent(context,SMSMonitor.class);
    i.setClass(context, SMSMonitor.class);
    context.startService(i);

这是我的 list 文件:

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="tabligh.block"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="3" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-permission android:name="android.permission.RECEIVE_SMS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>


    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <receiver android:name="SMSMonitor">  
            <intent-filter>  
                <action android:name="android.intent.action.BOOT_COMPLETED" /> 
                <action android:name="android.provider.Telephony.SMS_RECEIVED"></action> 
            </intent-filter>  

        </receiver>

        <activity
            android:name=".TablighBlockActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:enabled="true" android:name=".SMSMonitor"
                                    android:process=":smsmonitor"
                                    ></service>
    </application>

</manifest>

这是错误日志:

06-22 13:46:14.649: W/dalvikvm(1013): threadid=3: thread exiting with uncaught exception (group=0x4000fe70)
06-22 13:46:14.668: E/AndroidRuntime(1013): Uncaught handler: thread main exiting due to uncaught exception
06-22 13:46:15.038: E/AndroidRuntime(1013): java.lang.RuntimeException: Unable to instantiate service tabligh.block.SMSMonitor: java.lang.ClassCastException: tabligh.block.SMSMonitor
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2449)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.app.ActivityThread.access$2800(ActivityThread.java:112)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.os.Looper.loop(Looper.java:123)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.app.ActivityThread.main(ActivityThread.java:3948)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at java.lang.reflect.Method.invokeNative(Native Method)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at java.lang.reflect.Method.invoke(Method.java:521)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
06-22 13:46:15.038: E/AndroidRuntime(1013):     at dalvik.system.NativeStart.main(Native Method)
06-22 13:46:15.038: E/AndroidRuntime(1013): Caused by: java.lang.ClassCastException: tabligh.block.SMSMonitor
06-22 13:46:15.038: E/AndroidRuntime(1013):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2446)
06-22 13:46:15.038: E/AndroidRuntime(1013):     ... 10 more

谢谢。

Answer 1

   public class SMSMonitor extends BroadcastReceiver {

你是 SMSMonitor，它是 BroadcastReceiver 而不是服务

Intent i = new Intent(context,SMSMonitor.class);
    i.setClass(context, SMSMonitor.class);
    context.startService(i);