Android- How to send data from activity to service?

android, android-intent, java

Solution

Here:

 Intent serviceIntent = new Intent(bgservice.class.getName());

Passing String to `Intent` constructor for creating Intent to start Service. Intent constructor takes String as a Action name which we have added in `AndroidManifest.xml`.

<service android:enabled="true" android:name=".bgservice">
<intent-filter >
        <action android:name="com.microapple.googleplace.bgservice" />
    </intent-filter>
</service>

Now use `com.microapple.googleplace.bgservice` as action name to create Intent:

      Intent serviceIntent = new Intent("com.microapple.googleplace.bgservice");
      serviceIntent.putExtra("UserID", "123456");
      this.startService(serviceIntent);

OR

Use Intent constrictor which takes Context as first parameter and component name which we want to start as second parameter :

  Intent serviceIntent = new Intent(this,bgservice.class);
  serviceIntent.putExtra("UserID", "123456");
  this.startService(serviceIntent);

And also use same key which using to add data in Intent currently adding value with `UserID` key but trying to get value using `userID` key

Problem

In my application I'm trying to send data from my `MainActivity.class` to a service called `bgservice.class`. This is my following code: MainActivity.class: ``` public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Intent serviceIntent = new Intent(bgservice.class.getName()); serviceIntent.putExtra("UserID", "123456"); this.startService(serviceIntent); } ``` bgservice.class: ``` @Override public int onStartCommand(Intent intent, int flags, int startId) { String userID = intent.getStringExtra("userID"); System.out.println(userID); Toast.makeText(this,userID, Toast.LENGTH_LONG).show(); return START_STICKY; } ``` but I'm not getting the data in the service class. these are the following error I get: 02-25 09:05:41.166: E/AndroidRuntime(2633): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.microapple.googleplace/com.microapple.googleplace. MainActivity}: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.microapple.googleplace.bgservice (has extras) } AndroidManifest.xml: ``` ... <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" 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=".bgservice" /> </application> .... ```

Original source