New API demo of Fragment.startActivityForResult().

Change-Id: I87c5851bfaf3fa84bf57c101bab05b9a1911585d

samples/ApiDemos/src/com/example/android/apis/app/FragmentReceiveResult.java

@@ -0,0 +1,120 @@
+package com.example.android.apis.app;
+
+import com.example.android.apis.R;
+import com.example.android.apis.app.FragmentStack.CountingFragment;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.app.FragmentTransaction;
+import android.content.Intent;
+import android.os.Bundle;
+import android.text.Editable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+
+public class FragmentReceiveResult extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        FrameLayout frame = new FrameLayout(this);
+        frame.setId(R.id.simple_fragment);
+        setContentView(frame, lp);
+        
+        if (savedInstanceState == null) {
+            // Do first time initialization -- add fragment. 
+            Fragment newFragment = new ReceiveResultFragment();
+            FragmentTransaction ft = openFragmentTransaction();
+            ft.add(newFragment, R.id.simple_fragment).commit();
+        }
+    }
+    
+    static class ReceiveResultFragment extends Fragment {
+        // Definition of the one requestCode we use for receiving resuls.
+        static final private int GET_CODE = 0;
+        
+        private TextView mResults;
+        
+        private OnClickListener mGetListener = new OnClickListener() {
+            public void onClick(View v) {
+                // Start the activity whose result we want to retrieve.  The
+                // result will come back with request code GET_CODE.
+                Intent intent = new Intent(getActivity(), SendResult.class);
+                startActivityForResult(intent, GET_CODE);
+            }
+        };
+
+        public ReceiveResultFragment() {
+        }
+        
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+        }
+
+        @Override
+        public void onSaveInstanceState(Bundle outState) {
+            super.onSaveInstanceState(outState);
+        }
+
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+            View v = inflater.inflate(R.layout.receive_result, container, false);
+            
+            // Retrieve the TextView widget that will display results.
+            mResults = (TextView)v.findViewById(R.id.results);
+
+            // This allows us to later extend the text buffer.
+            mResults.setText(mResults.getText(), TextView.BufferType.EDITABLE);
+
+            // Watch for button clicks.
+            Button getButton = (Button)v.findViewById(R.id.get);
+            getButton.setOnClickListener(mGetListener);
+            
+            return v;
+        }
+        
+        /**
+         * This method is called when the sending activity has finished, with the
+         * result it supplied.
+         */
+        @Override
+        public void onActivityResult(int requestCode, int resultCode, Intent data) {
+            // You can use the requestCode to select between multiple child
+            // activities you may have started.  Here there is only one thing
+            // we launch.
+            if (requestCode == GET_CODE) {
+
+                // We will be adding to our text.
+                Editable text = (Editable)mResults.getText();
+
+                // This is a standard resultCode that is sent back if the
+                // activity doesn't supply an explicit result.  It will also
+                // be returned if the activity failed to launch.
+                if (resultCode == RESULT_CANCELED) {
+                    text.append("(cancelled)");
+
+                // Our protocol with the sending activity is that it will send
+                // text in 'data' as its result.
+                } else {
+                    text.append("(okay ");
+                    text.append(Integer.toString(resultCode));
+                    text.append(") ");
+                    if (data != null) {
+                        text.append(data.getAction());
+                    }
+                }
+
+                text.append("\n");
+            }
+        }
+
+    }
+}