I am new to Android development and I have a question regarding how to navigate from one page to another. Actually,what I want to do is this: Open app,first page appears,it says "Hello I am activity 1".Then there is a button which says "Next",you press next then you navigate to second page where it says "Hello I am activity 2".In this page there are two buttons,first says "Previous" which takes you back to page 1 and second says "Next" which takes you to page 3. Basically,this is where I am stuck,page 1 and 2 works fine,both next and previous buttons but I can't navigate to 3rd page when I press the "next" button from page 2. I have uploaded my source code here so you guys can download it and import it to Eclipse in order to see exactly what I have done.
Click here to download.
Would be glad if someone could help mates, Thanks in advance.
OK,code is shown here,I have created 3 activities which I also registered at Manifest and I also have created 3 layouts for these 3 activities.
Activity 1
import android.app.Activity;<br>
import android.content.Intent;<br>
import android.os.Bundle;<br>
import android.view.View;<br>
import android.widget.Button;<br>
public class Activity1 extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button next = (Button) findViewById(R.id.Button01);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), Activity2.class);
startActivityForResult(myIntent, 0);
}
});
}
}
Activity2
import android.app.Activity;<br>
import android.content.Intent;<br>
import android.os.Bundle;<br>
import android.view.View;<br>
import android.widget.Button;<br>
public class Activity2 extends Activity {
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
Button next = (Button) findViewById(R.id.Button02);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent intent = new Intent();
setResult(RESULT_OK, intent);
finish();
}
});
}
public void onCreate1(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
Button next = (Button) findViewById(R.id.Button04);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent1 = new Intent(view.getContext(), Activity3.class);
startActivityForResult(myIntent1, 0);
}
});
}
}
Activity3
import android.app.Activity;<br>
import android.content.Intent;<br>
import android.os.Bundle;<br>
import android.view.View;<br>
import android.widget.Button;<br>
public class Activity3 extends Activity {
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main3);
Button next = (Button) findViewById(R.id.Button04);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent intent = new Intent();
setResult(RESULT_OK, intent);
finish();
}
});
}
}
main.xml
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#000000"
android:text="This is Activity 1" />
<Button android:text="Next"
android:id="@+id/Button01"
android:layout_width="250px"
android:textSize="18px"
android:layout_height="55px">
</Button>
</LinearLayout>
main2.xml
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#000000"
android:text="This is Activity 2" />
<Button android:text="Previous"
android:id="@+id/Button02"
android:layout_width="250px"
android:textSize="18px"
android:layout_height="55px">
</Button>
<Button
android:layout_width="162dp"
android:layout_height="34dp"
android:text="Next"
android:id="@+id/Button04"
android:textSize="18px" />
</LinearLayout>
main3.xml
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#000000"
android:text="This is Activity 3" />
I have also registered my activities in Manifest.
Step #1: Replace startActivityForResult() with startActivity() in Activity1
Step #2: Remove your current code in the onClick() from Activity2 and replace it with a call to startActivity() to start Activity3
Step #3: Completely rewrite Activity3, as either it will not compile or it will crash at runtime, as you are referring to a widget that does not exist (Button04)
I'm not sure if it't too late but if you still need a clear answer then:
You will need to start activities. There isn't a DIRECT page navigation code, but instead there is a start Activity. By starting an activity you are able to go to another page because the page is related to the activity.
Intent myIntent = new Intent(Enter_Your_Current_Activity.this, Enter_The_Activity_You_Want_To_Navigate_To.class);
startActivity(myIntent);
Hope this helps!
p.s What I use in my code.
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Activity1 extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button next = (Button) findViewById(R.id.Button01);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), Activity2.class);
startActivityForResult(myIntent, 0);
}
});
}
}
a simple way to navigate one page to another is startActivity new Intent(firstpagename.this,secondpagename.class);