Home > DeveloperSection > Articles > Go to Main activity without Reloading or Refreshing activity

Go to Main activity without Reloading or Refreshing activity


ASP.Net ASP.Net 
Ratings:
0 Comment(s)
 4680  View(s)
Rate this:

Go to Main activity without Reloading or Refreshing activity

In this article I am going to discuss about to back main activity without refresh or reload activity.

If you have multiple activities as well as long code and you want to go main activity then I am telling you tips to back main activity and save your code as well as efficiency of the application. This code save your time, code as well as efficiency of your android application

 

MainAcitivity à   Second Activity  à  ThirdActivity   à  MainAcitivity

 

Follow the steps which are given below -:

·         Open Eclipse

·         Select New Android Application Project

·         Enter Application Name as BackMainActivity

·         Click Next

·         Click Finish.

 

Now add the following control in res/layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

 

    <EditText

        android:id="@+id/etName"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="38dp"

        android:layout_marginTop="34dp"

        android:ems="10" />

 

    <Button

        android:id="@+id/btnNext"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignRight="@+id/etName"

        android:layout_below="@+id/etName"

        android:layout_marginRight="57dp"

        android:text="Next" />

 

    <TextView

        android:id="@+id/tvMainActivity"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:text="Main Activity" />

 

</RelativeLayout>

 

In res/layout add the two xml file name should be second.xml and third.xml .

In second.xml write the following code

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

 

    <TextView

        android:id="@+id/tvSecondActivity"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="14dp"

        android:text="Second Activity" />

 

    <Button

        android:id="@+id/btnNext"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignRight="@+id/textView1"

        android:layout_below="@+id/textView1"

        android:layout_marginRight="39dp"

        android:layout_marginTop="30dp"

        android:text="Next" />

 

</RelativeLayout>

 

 

In third.xml write the following code

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

 

    <Button

        android:id="@+id/btnBackMain"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginTop="108dp"

        android:text="Back in Main" />

 

    <TextView

        android:id="@+id/tvThird"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_toRightOf="@+id/btnBackMain"

        android:text="Third Activity" />

 

</RelativeLayout>

 

 

In src/ com.example.backmainactivity add the two new class name should be SecondActivity.java and ThirdActivity.java

Write the following code in MainActivity.java

package com.example.backmainactivity;

 

public class MainActivity extends Activity {

      Button btnNext;

      EditText etname;

 

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            btnNext=(Button)findViewById(R.id.btnNext);

            etname=(EditText)findViewById(R.id.etName);

            btnNext.setOnClickListener(new View.OnClickListener() {    

                  @Override

                  public void onClick(View v) {

                        // TODO Auto-generated method stub

//Create a new Activity and start the new activity

                        Intent intent=newIntent(MainActivity.this,SecondActivity.class);

                        startActivity(intent);                   

                  }

            });        

      }

      @Override

      public boolean onCreateOptionsMenu(Menu menu) {

            // Inflate the menu; this adds items to the action bar if it is present.

            getMenuInflater().inflate(R.menu.main, menu);

            return true;

      }

 

}

 

 

In SeondActivity.java write the following code

package com.example.backmainactivity;

 

public class SecondActivity extends Activity {

Button btnNext;

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            // TODO Auto-generated method stub

            super.onCreate(savedInstanceState);

            setContentView(R.layout.second);

            btnNext=(Button)findViewById(R.id.btnNext);

            btnNext.setOnClickListener(new View.OnClickListener() {

                 

                  @Override

                  public void onClick(View v) {

                        // TODO Auto-generated method stub

                        Intent intent=newIntent(SecondActivity.this,ThirdActivity.class);

                        startActivity(intent);

                       

                  }

            });

      }

 

}

 

 

Now last paste the following code in Thirdactivity.java

package com.example.backmainactivity;

 

public class ThirdActivity  extends Activity {

 

      Button btnBackMain;

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            // TODO Auto-generated method stub

            super.onCreate(savedInstanceState);

            setContentView(R.layout.third);

            btnBackMain=(Button)findViewById(R.id.btnBackMain);

            btnBackMain.setOnClickListener(new View.OnClickListener() {

                 

                  @SuppressLint("NewApi")

                  @Override

                  public void onClick(View v) {

                        // TODO Auto-generated method stub

// TODO getIntent() return the first intent. And navigateUpTo method is use to back the source activity

      navigateUpTo(getIntent());//Back in First Activity         

                  }

            });        

      }

 

}

 

Now define the activity in AndroidManifest.xml

   </activity>

        <activityandroid:name="com.example.backmainactivity.SecondActivity"/>

        <activityandroid:name="com.example.backmainactivity.ThirdActivity"/>

 

Run your application output like this

Go to Main activity without Reloading or Refreshing activity

Click the Next button and a new activity will be open

Go to Main activity without Reloading or Refreshing activity

Again click Next button

Go to Main activity without Reloading or Refreshing activity

Click  Back in Main button and go back in main activity

Go to Main activity without Reloading or Refreshing activity

 

Thanks for reading this article. You can enter your valuable comments

 And suggestion to improve this article in the comment box.


Don't want to miss updates? Please click the below button!

Follow MindStick