Question

I’m calling 2nd activity value in 1st activity but it does not show. Tell me why?
If I declare public static String in 1st activity and call in 2nd activity is show perfectly but if i declare public static String value in 2nd activity and calling in 1st activity is show null tell me why??

  import android.widget.EditText;
  import android.widget.TextView;
  import android.widget.Toast;

  public class ButtonExample extends Activity
 {
   Button b1;

  String Latitude500;

 public void onCreate(Bundle savedInstanceState)
{
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);

  b1 = (Button) findViewById(R.id.button1);


 Latitude500=textview.Latitude1nazeer;

 TextView t3 = (TextView) findViewById(R.id.textView2);

t3.setText(""+Latitude500);


 b1.setOnClickListener(new OnClickListener()
 {
 public void onClick(View v)
 {



  Intent intent = new Intent(ButtonExample.this, textview.class);



startActivity(intent);


 }
  });


         public class textview extends Activity {



  public static String Latitude1nazeer;


  EditText Latituden1;

     public void onCreate(Bundle savedInstanceState)
  {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.laymenu);


   Latituden1 = (EditText) findViewById(R.id.editText2);
   String ln = Latituden1.getText().toString();


   Latitude1nazeer=ln;





  }
          }




         <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mypackage"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:name=".ButtonExample"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
        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=".textview" > </activity>   
</application>

 </manifest>

Answer 1

It is Because , before assigning value to string in 2nd Activity you are reading in first activity. So it is null.

Declare like this in 2nd Activity public static String Check="check"

Print this value in 1st Activity. You came to know this