How can I start MAIN activity with the help of ?

Question

When I declare my main activity in this maner:

Answer 1

the name attribute in the action tag is the name of the action, not the name of your activity. remove the line,

  <action android:name="com.package.name.MyActivity"/>

since the intent filter tag is under your activity's tag, the system already understands that it's applied to that activity.

Answer 2

Your class name isn't com.package.name.MyActivity, it's com.package.name.general.MyActivity.

An easy way to avoid this mistake is to create your new Intent using a class instead of a package name. You can use auto-complete to fill in the right class.

You say you don't want to create the Intent by specifying the class. I wonder why not -- I think it's a good way to go.

Answer 3

Try to specify two intent filters:

<activity android:name=".MyActivity"
          android:configChanges="orientation|keyboardHidden"
          android:windowSoftInputMode="stateHidden"
          android:screenOrientation="portrait">
    <intent-filter>
          <action android:name="android.intent.action.MAIN"/>
          <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
    <intent-filter>
          <action android:name="com.package.name.MyAction"/>
          <category android:name="android.intent.category.DEFAULT"/>
    </intent-filter>
</activity>

Then you can start the activity using the action name:

Intent intent = new Intent("com.package.name.MyAction");
context.startActivity(intent);

or the class name:

Intent intent = new Intent(context, MyActivity.class);
context.startActivity(intent);