Changing First Activity in App

Question

I'm trying to change the first Activity of my app and I believe I would just have to change in the Manifest under the Activity tag.

Right now I'm trying to change it to Main2Activity.

<activity android:name=".Main2Activity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
</activity>

When I run this I get the error Error:Execution failed for task ':app:processDebugManifest'. Manifest merger failed with multiple errors, see logs

I'm unsure how to go about fixing this. It works fine if I leave it as MainActivity though.

Class I'm trying to add

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);
}

public void multiplayerView(View view) {
    startActivity(new Intent(this, MainActivity.class));
}

public void campaignView(View view) {
    startActivity(new Intent(this, MainActivity.class));
}

}

This worked for me. http://stackoverflow.com/questions/24506800/android-studio-gradle-icon-error-manifest-merger — vidulaJ, Oct 31 '16 at 07:30
Include the errors in logcat. That way it is easier to help you — Marat, Oct 31 '16 at 07:34
I just tried that again and it still gave me the same error. — Michael Philipps, Oct 31 '16 at 07:35
Include the Activity's `.java` file. You might need to also change the `class` name in the file to `Main2Activity` and the name of the file to `Main2Activity.java` — user41805, Oct 31 '16 at 07:38
`public class Main2Activity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); } public void multiplayerView(View view) { startActivity(new Intent(this, MainActivity.class)); } public void campaignView(View view) { startActivity(new Intent(this, MainActivity.class)); } }` for some reason all R references are now not recognized. Tried a rebuild and clean — Michael Philipps, Oct 31 '16 at 07:40
"Manifest merger failed with multiple errors, **see logs**" ..so what is in the logs? — donfuxx, Oct 31 '16 at 07:44
Try changing the file name to `Main2Activity.java`. But note that using numbers as Java file names is not recommended. — user41805, Oct 31 '16 at 07:44
I'm guessing its the event logs. It just says it finished with an error. I'm wondering if there are other logs that I don't know about to check though. — Michael Philipps, Oct 31 '16 at 07:45
Where exactly would I change that? should I refactor Main2Activity? — Michael Philipps, Oct 31 '16 at 07:55
@KritixiLithos I just did and it didn't seem to do anything new — Michael Philipps, Oct 31 '16 at 08:08

Rouhollah Mazarei · Answer 1 · 2016-10-31T08:31:18.413

This works for me. Pay attention to 2 "Activity" tags. I think your manifest should look like this. Manifest:

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity"></activity>
    <activity android:name=".Main2Activity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

Activity (as you mentioned. nothing special):

package ir.webarena.test01;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
    }

    public void multiplayerView(View view) {
        startActivity(new Intent(this, MainActivity.class));
    }

    public void campaignView(View view) {
        startActivity(new Intent(this, MainActivity.class));
    }
}

Changing First Activity in App

1 Answers1