我知道之前已经问过这个问题,但我已经找到了我能找到的所有答案,但仍然无法解决问题。
问题在于,当BroadcastReceiver启动时,不会调用IntentService onHandleIntent()。奇怪的是构造函数运行(我可以通过Log输出看到)。 这是我的代码:
NoLiSeA.class (此类包含启动我的服务的BroadcastReceiver)
public void toProcess(StatusBarNotification sbn) {
LocalBroadcastManager.getInstance(this).registerReceiver(notificationForwarder, new IntentFilter("to_forward"));
Intent intent = new Intent("to_forward");
intent.putExtra("sbn", sbn);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
Log.i("NoLiSe.TAG", "toProcess");
}
private BroadcastReceiver notificationForwarder = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("NoLiSe.TAG", "BroadCastReceiver.onReceive");
Intent i = new Intent(context, CoreTwoA.class);
i.putExtras(intent);
startService(i);
}
}
};
CoreTwoA.class (这是IntentService。由于控制台中没有日志文本,因此我无法调用onHandleIntent()。)
public class CoreTwoA extends IntentService {
private TextToSpeech mtts;
public CoreTwoA() {
super("TheCoreWorker");
Log.d("source", "exception", new Exception());
Log.i("CoreTwoA.TAG", "Constructor");
}
@Override
protected void onHandleIntent(Intent intent) {
Log.i("CoreTwoA.TAG", "onHandleIntent");
}
}
的AndroidManifest.xml
<service
android:name=".CoreTwoA"
android:label="@string/service_name"
android:exported="false">
</service>
更新
基于以下讨论,我能够将问题缩小到BroadCastReceiver中的以下代码行:
i.putExtra("sbn", sbn)
如果我删除它,即不添加额外的意图,那么我的IntentService中的onHandleIntent()方法就会运行。
如果包含它,则onHandleIntent()不会运行,并且我的IntentService的构造函数中的Log.d()将以下内容写入logcat
06-10 19:40:35.355 25094-25094/com.dezainapps.myapp D/source: exception
java.lang.Exception
at com.dezainapps.myapp.CoreTwoA.<init>(CoreTwoA.java:20)
at java.lang.Class.newInstance(Native Method)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:2859)
at android.app.ActivityThread.-wrap4(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1427)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
06-10 19:40:35.355 25094-25094/com.dezainapps.myapp I/CoreTwoA.TAG: Constructor
为什么通过Intent将实现Parcelable的StatusBarNotification对象传递给IntentService的任何想法都不起作用? 奇怪的是,通过intent(参见代码)从我的toProcess()方法广播相同的StatusBarNotfication sbn对象确实有效。
答案 0 :(得分:1)
我遇到与OP相同的问题。
问题原来是我通过启动ArrayList
的{{1}}传递了一个巨大的Parcelable
(大约4000 Intent
个元素)。诊断非常困难,因为它在客户的设备上“无声地”失败,所以我没有得到ACRA错误报告。
无论如何,我使用了一个快速而肮脏的技巧来解决问题 - 基本上是将IntentService
存储在我用来设置/获取ArrayList的静态元素中,而不是试图通过Intent传递它。 / p>
在进一步调查(对其他设备进行一些测试)时,我发现了ArrayList
被抛出。 More discussion on that here
如果有人想复制,这是我的测试代码:
测试代码
如果您想让它发挥作用,请将TransactionTooLargeException
值更改为更小的值。
4000
<强> TestIntentService.java 强>
ArrayList<ParcelableNameValuePair> testArrayList = new ArrayList<>();
for (int i = 0; i < 4000; i++) {
testArrayList.add(new ParcelableNameValuePair("name" + i, "value" + i));
}
TestIntentService.startAction(AdminHomeActivity.this, testArrayList);
<强> ParcelableNameValuePair.java 强>
public class TestIntentService extends IntentService {
private static final String LOG_TAG = TestIntentService.class.getSimpleName();
private static final String TEST_ACTION = "com.example.action.FOO";
private static final String EXTRA_PARAM1 = "com.example.extra.PARAM1";
private static final String EXTRA_PARAM2 = "com.example.extra.PARAM2";
public TestIntentService() {
super("TestIntentService");
}
public static void startAction(Context context, ArrayList<ParcelableNameValuePair> testArrayList) {
Log.d(LOG_TAG, "1. startAction()");
Utilities.makeToast(context, "1. startAction()");
try {
int arrayListSize = (testArrayList == null) ? -1 : testArrayList.size();
Log.d(LOG_TAG, "2. arrayListSize: " + arrayListSize);
Utilities.makeToast(context, "2. arrayListSize: " + arrayListSize);
Intent intent = new Intent(context, TestIntentService.class);
intent.setAction(TEST_ACTION);
//intent.putExtra(EXTRA_PARAM1, testArrayList);
intent.putParcelableArrayListExtra(EXTRA_PARAM2, testArrayList);
/**
* This line should result in a call to onHandleIntent() but, if we're sending a huge ArrayList, it doesn't...
*/
context.startService(intent);
}
catch(Exception e) {
Log.e(LOG_TAG, "Exception starting service", e);
Utilities.makeToast(context, "Exception starting service: " + e);
}
}
@Override
protected void onHandleIntent(Intent intent) {
Log.d(LOG_TAG, "3. onHandleIntent()");
Utilities.makeToast(getApplicationContext(), "3. onHandleIntent()");
try {
if (intent != null) {
final String action = intent.getAction();
if (TEST_ACTION.equals(action)) {
ArrayList<ParcelableNameValuePair> testArrayList = intent.getParcelableArrayListExtra(EXTRA_PARAM1);
int testArrayListSize = (testArrayList == null) ? -1 : testArrayList.size();
Log.d(LOG_TAG, "4. testArrayListSize: " + testArrayListSize);
Utilities.makeToast(getApplicationContext(), "4. testArrayListSize: " + testArrayListSize);
ArrayList<ParcelableNameValuePair> testArrayList2 = intent.getParcelableArrayListExtra(EXTRA_PARAM2);
int testArrayList2Size = (testArrayList2 == null) ? -1 : testArrayList2.size();
Log.d(LOG_TAG, "5. testArrayList2Size: " + testArrayList2Size);
Utilities.makeToast(getApplicationContext(), "5. testArrayList2Size: " + testArrayList2Size);
}
}
}
catch(Exception e) {
Log.e(LOG_TAG, "Exception handling service intent", e);
Utilities.makeToast(getApplicationContext(), "Exception handling service intent: " + e);
}
}
}
就像我说的那样,我使用了一个快速而肮脏的解决方案来解决这个问题。我认为更好的解决方案是让应用程序将public class ParcelableNameValuePair implements Parcelable {
private String name, value;
public ParcelableNameValuePair(String name, String value) {
this.name = name;
this.value = value;
}
public String getName() {
return name;
}
public String getValue() {
return value;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeString(name);
out.writeString(value);
}
public static final Parcelable.Creator<ParcelableNameValuePair> CREATOR = new Parcelable.Creator<ParcelableNameValuePair>() {
public ParcelableNameValuePair createFromParcel(Parcel in) {
return new ParcelableNameValuePair(in);
}
public ParcelableNameValuePair[] newArray(int size) {
return new ParcelableNameValuePair[size];
}
};
private ParcelableNameValuePair(Parcel in) {
name = in.readString();
value = in.readString();
}
}
写入文件系统,然后通过Intent将引用传递给该文件(例如,文件名/路径)到ArrayList
然后让IntentService
检索文件内容并将其转换回IntentService
。
当ArrayList
完成文件后,它应该删除它或通过本地广播将指令传回应用程序以删除它创建的文件(传回相同的文件引用它提供给它。)
答案 1 :(得分:0)
您是否尝试过使用context.startService(intent);?
当你在这样的广播接收器中时,你没有自己的上下文来引用我相信你需要使用传递给onRecieve方法的那个。
答案 2 :(得分:0)
使用此:
private BroadcastReceiver notificationForwarder = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("NoLiSe.TAG", "BroadCastReceiver.onReceive");
Intent i = new Intent(context, CoreTwoA.class);
i.putExtra("intent",intent);
context.startService(i);
}
}
};
答案 3 :(得分:0)
使用以下代码:
private BroadcastReceiver notificationForwarder = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.e("NoLiSe.TAG", "BroadCastReceiver.onReceive");
Intent i = new Intent(context, CoreTwoA.class);
i.putExtra("sbn",intent.getParcelableExtra("sbn"));
startService(i);
}
};
您错误地使用了我删除的i.putExtras(intent);
,并添加了通过StatusBarNotification
发送putExtra
对象的其他方式。
我测试了这段代码并调用了onHandleIntent