I am facing an issue with a button onclick. I checked with previously asked questions, but was not able to figure out the problem, where exactly it lies. The first time, when I click on, ‘Next’ button, it successfully moves to next page, but in the second page, after entering details, when the ‘Proceed’button is clicked, the application crashes.
Activity1:
package com.application.P1;
//import com.application.P1.R;
//import android.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class P1Activity extends Activity implements View.OnClickListener{
/** Called when the activity is first created. */
// @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Using TextView to Give a Home Page Screen
TextView tv=new TextView(this);
tv.setText("WELCOME TO Application Click on Next to Proceed");
setContentView(R.layout.main);
}
public void Welcome( View v){
// Toast.makeText(this, "Please enter your Nickname and proceed further", Toast.LENGTH_SHORT).show();
Intent myActivity = new Intent(this,Activity2.class);
startActivity(myActivity);
// EditText t
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
Activity2:
package com.application.P1;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class Activity2 extends Activity implements View.OnClickListener{
/** Called when the activity is first created. */
// @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
}
public void Proceed4( View v){
// Toast.makeText(this, "Thanks for entering your nickname", Toast.LENGTH_SHORT).show();
Intent myActivity2 = new Intent(this,Activity3.class);
startActivity(myActivity2);
// EditText t
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
Activity3:
package com.application.P1;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
//import android.content.Intent;
//import android.widget.Button;
import android.widget.Toast;
public class Activity3 extends Activity implements View.OnClickListener{
/** Called when the activity is first created. */
// @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.check);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
All the three activities are in same package. In the second activity, after button click, when a message is toasted, the toasted message is coming properly. But, when the next activity is called, it is not coming.
XML Coding:
Main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/backrepeat"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:text="@string/Next"
android:id="@+id/Button01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="Welcome"/>
</LinearLayout>
login.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/mynickname" />
<EditText
android:id="@+id/mynickname3"
android:singleLine="true"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:text="@string/Proceed"
android:id="@+id/Button02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="Proceed4"/>
</LinearLayout>
Check.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello3" />
</LinearLayout>
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.application.P1"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="@drawable/cherry"
android:label="@string/app_name" >
<activity
android:name=".P1Activity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activity2">
</activity>
<activity android:name=".Activity3"></activity>
</application>
</manifest>
03-22 00:50:27.125: E/AndroidRuntime(857): at java.lang.reflect.Method.invokeNative(Native Method)
03-22 00:50:27.125: E/AndroidRuntime(857): at java.lang.reflect.Method.invoke(Method.java:507)
03-22 00:50:27.125: E/AndroidRuntime(857): at android.view.View$1.onClick(View.java:2139)
03-22 00:50:27.125: E/AndroidRuntime(857): … 11 more
03-22 00:50:27.125: E/AndroidRuntime(857): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity
class {com.application.P1/com.application.P1.Activity3}; have you declared this activity in your AndroidManifest.xml?
03-22 00:50:27.125: E/AndroidRuntime(857): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405)
03-22 00:50:27.125: E/AndroidRuntime(857): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1379)
03-22 00:50:27.125: E/AndroidRuntime(857): at android.app.Activity.startActivityForResult(Activity.java:2827)
03-22 00:50:27.125: E/AndroidRuntime(857): at android.app.Activity.startActivity(Activity.java:2933)
03-22 00:50:27.125: E/AndroidRuntime(857): at com.application.P1.Activity2.Proceed4(Activity2.java:31)
03-22 00:50:27.125: E/AndroidRuntime(857): ... 14 more
03-22 00:50:29.867: I/Process(857): Sending signal. PID: 857 SIG: 9
Values.xml:
<string name="hello">Welcome to Expresso Application</string>
<string name="Next">Next</string>
<string name="app_name">Expresso2</string>
<string name="Proceed">Proceed</string>
<string name="Nickname">Nickname</string>
<string name="mynickname">myNickname</string>
<string name="hello3">Tensions</string>
Based on the stack trace, it appears that your manifest file does not declare the activity. Check that there is an
<activity>tag forActivity3.