android - 任务完成后如何从 intentservice 获得通知？

Question

好吧，我正在关注这个 link

甚至添加了广播接收器，如上面的链接所示。但我没有通知任务完成，我想在此 Intent 服务完成后运行一些 Activity 。谁能帮帮我。

我收到如下错误:

Permission Denial: broadcasting Intent 
{ act=com.saaranga.services.GetTaxonomy.DATA_RETRIEVED 
cat=[android.intent.category.DEFAULT] (has extras) } 
from com.saaranga.lib (pid=1089, uid=10034) 
equires com.saaranga.services.Permissions.SEND_SIMPLE_NOTIFICATIONS 
due to receiver com.saaranga.lib/com.saaranga.services.ServiceReciver

在 intentService 中我已经初始化了:

public static final String ACTION_NOTIFY="com.saaranga.services.GetTaxonomy.DATA_RETRIEVED";

private void sendSimpleBroadcast(int count)
{
    Intent broadcastIntent = new Intent();

    broadcastIntent.setAction(GetTaxonomy.ACTION_NOTIFY);
    broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
    broadcastIntent.putExtra(PARAM_OUT_COUNT, count);
//    broadcastIntent.setClass(getApplicationContext(), getClass());
    sendBroadcast(broadcastIntent, Permissions.SEND_SIMPLE_NOTIFICATIONS);
}

并创建了一个权限类:

package com.saaranga.services;

public class Permissions {
public static final String SEND_SIMPLE_NOTIFICATIONS =  "com.saaranga.services.Permissions.SEND_SIMPLE_NOTIFICATIONS";}

在 list 文件中:

 <permission 
    android:name="com.saaranga.services.Permissions.SEND_SIMPLE_NOTIFICATIONS"
    android:label="permission to send simple notifications"
    android:permissionGroup="android.permission-group.PERSONAL_INFO"
    android:protectionLevel="normal" />

<service
        android:name="com.saaranga.services.GetTaxonomy"
        android:enabled="true" 
        android:exported="true">
</service>

<receiver android:name="com.saaranga.services.ServiceReciver"
              android:exported="true"
              android:permission="com.saaranga.services.Permissions.SEND_SIMPLE_NOTIFICATIONS">
         <intent-filter>
            <action android:name="com.saaranga.services.GetTaxonomy.DATA_RETRIEVED"/>
            <category android:name="android.intent.category.DEFAULT" /> 
         </intent-filter>
    </receiver>

甚至在上面的链接中添加了 Broadcast reciver。但我没有通知任务完成，我想在此 Intent 服务完成后运行一些 Activity 。谁能帮帮我。

Answer 1

第 1 步:

在MainActivity.class中

private ResponseReceiver receiver;
//register reciver

IntentFilter filter = new IntentFilter(ResponseReceiver.ACTION_RESP);
    filter.addCategory(Intent.CATEGORY_DEFAULT);
    receiver = new ResponseReceiver();
    registerReceiver(receiver, filter);

第 2 步:扩展 BroadcastReceiver 的 MainActivity.class 中的子类。

    public class ResponseReceiver extends BroadcastReceiver {
    public static final String ACTION_RESP = "com.saaranga.intent.action.MESSAGE_PROCESSED";
    @Override
    public void onReceive(Context context, Intent intent) {

        Toast.makeText(getApplicationContext(), "download complete", Toast.LENGTH_SHORT).show();
    }

}

第 3 步:在 IntentService 中:

@Override
protected void onHandleIntent(Intent intent) {
Intent broadcastIntent = new Intent();
    broadcastIntent.setAction(ResponseReceiver.ACTION_RESP);
    broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
    sendBroadcast(broadcastIntent);
}

这段代码对我来说很好用。干杯。