Intent does not work in same way all the time in Android

Question

There are 2-3 ways to use Intent to start New Activity.

Mostly, I am using

Intent openStartingPoint = new Intent("com.Example.Jeeten.Connection");
startActivity(openStartingPoint);

But sometimes, It does not work, It shows error Activity not found and in that case If I use

Intent openStartingPoint = new Intent(Connection.this, Hello.class);
startActivity(openStartingPoint);

then It works fine. What can be the issue with this ?

can you please explain with one example when first way not work — ρяσѕρєя K, Feb 11 '14 at 06:25
You should read up on the different constructors of the `Intent` class http://developer.android.com/reference/android/content/Intent.html#Intent() — Anid Monsur, Feb 11 '14 at 06:25
@JeetenParmar : first approach not work only when you forget to define same action(in your case `com.Example.Jeeten.Connection`) for Activity using `intent-filter` in AndroidManifest — ρяσѕρєя K, Feb 11 '14 at 06:31
Intent provide no of constructor for various way to start activity so please understood Intent various constructor... — Haresh Chhelana, Feb 11 '14 at 06:32
@ρяσѕρєяK, Connection is actually Launcher Activity. so your mean, I will need to use intent-filter action ? — Jeeten Parmar, Feb 11 '14 at 06:42

score 0 · Answer 1 · answered Feb 11 '14 at 07:24

When u make an activity, u have to register it in your AndroidManifest.xml file.

<activity
        android:name=".Connection"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="com.Example.Jeeten.CONNECTION" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

In the above code <activity android:name represents your activity class(Case sensitive),in your case its Connection and Hello.Next is <action android:name in this you specify by what name are you going to refer to the activity(its a good practice to put the last word all in uppercase CONNECTION). So make sure you have two such activities in your xml file.In case one of the activity is your starting point of your app,modify the <intent-filter> like this

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

Intent does not work in same way all the time in Android

1 Answers1