Android: Cannot Start New Activity Using Intents

Question

I am trying to launch a new activity when a button is pressed but nothing happens and I get no errors. Here is my code:

Main activity

public class CSLearn_Python_AppActivity extends Activity {


String tag = "Events";

/** Called when the activity is first created. */


@Override
public void onCreate(Bundle savedInstanceState) {


    //get content from main.xml
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);



    Button login = (Button) findViewById(R.id.loginBtn);
    login.setOnClickListener(new OnClickListener(){
        public void onClick(View v){



//              Intent intent = new Intent("com.Main.Verification");   
//              startActivity(intent);

            Intent myIntent = new Intent(getBaseContext(), Verification.class);
            startActivity(myIntent);

        }
    });



 }

The new activity

    import android.app.Activity;
import android.os.Bundle;

public class Verification extends Activity{

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.verification);

}

}

Verification XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/linearLayout1" android:layout_width="match_parent" android:baselineAligned="true" android:layout_height="match_parent" android:layout_gravity="center" android:gravity="center" android:orientation="vertical">
    <TextView android:text="@string/Verification" android:id="@+id/Verrification" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
    <EditText android:layout_height="wrap_content" android:id="@+id/password" android:inputType="textPassword" android:layout_width="112dp">
        <requestFocus></requestFocus>
    </EditText>
    <Button android:text="@string/LoginBtn" android:id="@+id/loginBtn" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>

I added this to the android manifesto

<activity android:name=".Verification"
              android:label="Verification">
        <intent-filter>
            <action android:name="com.Main.VERIFICATION" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

If anyone can point me in the right direction it would be really appreciated.

long live the android manifesto! – gonzobrains Mar 07 '12 at 08:39 — gonzobrains, Mar 07 '12 at 08:39

score 5 · Answer 1 · edited Oct 29 '12 at 14:51

5

Try the code below and register your activity in the AndroidManifest.xml file:

Intent myIntent = new Intent(CSLearn_Python_AppActivity.this, Verification.class);
startActivity(myIntent);

edited Oct 29 '12 at 14:51

user

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answered Oct 29 '12 at 13:27

Prabu

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score 1 · Answer 2 · answered Jan 16 '12 at 08:37

1

Is CSLearn_Python_AppActivity in the same package than Verification.

May be you can try in the Manifest with:

<activity android:name="yourpackage.Verification"
                  android:label="@string/verification" >
        </activity>

answered Jan 16 '12 at 08:37

chemalarrea

1,385
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score 0 · Answer 3 · edited Sep 20 '16 at 19:53

0

You include the other activity in Manifest file:

Intent intent =  new Intent(First.this, Second.class);intent.putExtra("userData",registeredUsersData);startActivity(intent);

edited Sep 20 '16 at 19:53

Jaap

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answered Sep 20 '16 at 19:32

Farruh Habibullaev

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score 0 · Answer 4 · answered Nov 07 '11 at 23:22

0

The intent-filter in your Verification activity is not necessary.

answered Nov 07 '11 at 23:22

keyboardsurfer

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Manifest now simply reads but still no luck. Thanks though. – TrueWheel Nov 07 '11 at 23:37

score 0 · Answer 5 · edited May 23 '17 at 12:26

0

I believe the problem lies in the getBaseContext(). Use getApplicationContext() instead (the activity's context is also an option but would cause a leak). I havent quite been able to wrap my head around the base context, but it seems to be some sort of proxy doing more or less nothing in its raw implementation.

A more through explanation of the different contexts is given here.

edited May 23 '17 at 12:26

Community

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answered Nov 07 '11 at 23:22

Kristian Evensen

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Thanks for the advice and link. I have tried getApplicationContext() but still nothing! Thanks for your suggestion. – TrueWheel Nov 07 '11 at 23:38
1

Is there no output in logcat either? – Kristian Evensen Nov 07 '11 at 23:52

score 0 · Answer 6 · answered Nov 07 '11 at 23:24

0

I would try to change it like this:

    Button login = (Button) findViewById(R.id.loginBtn);
    login.setOnClickListener(new OnClickListener(){
    public void onClick(View v){
        Intent myIntent = new Intent(v.getContext(), Verification.class);
        startActivity(myIntent);

    }
    });

answered Nov 07 '11 at 23:24

Martin Nuc

5,364
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Hi, thanks for your response. I made your changes but still nothing happens when I press the button. Thanks again. – TrueWheel Nov 07 '11 at 23:34

doppelhelix · Answer 7 · 2011-11-08T00:04:48.440

0

try removing the intent filter, and everything in between, from your manifest

do you have all your imports? import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button;

edited Nov 08 '11 at 00:04

answered Nov 07 '11 at 23:25

doppelhelix

77
4

Manifest not simply reads but still no luck. Thanks though. – TrueWheel Nov 07 '11 at 23:36
1

now try this maybe? Intent intent=new Intent(CSLearn_Python_AppActivity.this, Verification.class); startActivity(intent); – doppelhelix Nov 07 '11 at 23:47
also it looks like you have to implements OnClickListener – doppelhelix Nov 07 '11 at 23:48

score 0 · Answer 8 · answered Nov 08 '11 at 05:05

0

Intent myIntent = new Intent(CSLearn_Python_AppActivity.this, Verification.class);
startActivity(myIntent);

In your Android manifest file, 

<activity android:name=".Verification" android:label="Verification"></activity>

answered Nov 08 '11 at 05:05

CAMB

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Android: Cannot Start New Activity Using Intents

8 Answers8