diff --git a/app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java b/app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java
index 495370b..d5f7994 100644
--- a/app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java
+++ b/app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java
@@ -4,13 +4,17 @@ import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
+import android.widget.TextView;
 
 public class MainActivity extends AppCompatActivity {
+    TextView tvPath;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        tvPath = findViewById(R.id.tv_path1);
     }
 
     public void goBack (View v) {
@@ -19,7 +23,8 @@ public class MainActivity extends AppCompatActivity {
 
     public void gotoSecondActivity(View v) {
         Intent it = new Intent(this, SecondActivity.class);
-        startActivity(it);
+        it.putExtra("path", tvPath.getText());
+        startActivityForResult(it, 1);
     }
 
 }
diff --git a/app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java b/app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java
index dd83e55..ecfde64 100644
--- a/app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java
+++ b/app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java
@@ -4,13 +4,17 @@ import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
+import android.widget.TextView;
 
 public class SecondActivity extends AppCompatActivity {
+    TextView tvPath;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_second);
+
+        tvPath = findViewById(R.id.tv_path2);
     }
 
     public void goBack (View v) {
@@ -19,6 +23,7 @@ public class SecondActivity extends AppCompatActivity {
 
     public void gotoThirdActivity(View v) {
         Intent it = new Intent(this, ThirdActivity.class);
-        startActivity(it);
+        it.putExtra("path", tvPath.getText());
+        startActivityForResult(it, 2);
     }
 }
diff --git a/app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java b/app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java
index 0eacc97..885104a 100644
--- a/app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java
+++ b/app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java
@@ -4,13 +4,17 @@ import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
+import android.widget.TextView;
 
 public class ThirdActivity extends AppCompatActivity {
+    TextView tvPath;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_third);
+
+        tvPath = findViewById(R.id.tv_path3);
     }
 
     public void goBack (View v) {
@@ -19,6 +23,7 @@ public class ThirdActivity extends AppCompatActivity {
 
     public void gotoFirstActivity(View v) {
         Intent it = new Intent(this, MainActivity.class);
-        startActivity(it);
+        it.putExtra("path", tvPath.getText());
+        startActivityForResult(it, 3);
     }
 }