main.xml file: <?xml version=”1.0” encoding=”utf-8”?> <LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android” android:orientation=”vertical” android:layout_width=”fill_parent” android:layout_height=”fill_parent” > <TextView android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:text=”Please enter your name” /> <EditText android:id=”@+id/txt_username” android:layout_width=”fill_parent” android:layout_height=”wrap_content” /> <Button android:id=”@+id/btn_OK” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:text=”OK” /> </LinearLayout> 2. Add the following statements in bold to Activity2.java: package net.learn2develop.Activities; import android.app.Activity; import android.os.Bundle; import android.content.Intent; import android.net.Uri; import android.view.View; import android.widget.Button; import android.widget.EditText; public class Activity2 extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity2); //---get the OK button--- Button btn = (Button) findViewById(R.id.btn_OK); //---event handler for the OK button--- btn.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent data = new Intent(); //---get the EditText view--- EditText txt_username = (EditText) findViewById(R.id.txt_username); //---set the data to pass back--- data.setData(Uri.parse( txt_username.getText().toString())); setResult(RESULT_OK, data); //---closes the activity--- finish(); } }); } } 3. Add the following statements in bold to the MainActivity.java file: package net.learn2develop.Activities; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.Window; import android.view.KeyEvent; import android.widget.Toast; import android.content.Intent; public class MainActivity extends Activity { String tag = “Events”; int request_Code = 1; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //---hides the title bar--- //requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.main); Log.d(tag, “In the onCreate() event”); } public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { //startActivity(new Intent(“net.learn2develop.ACTIVITY2”)); //startActivity(new Intent(this, Activity2.class)); startActivityForResult(new Intent( “net.learn2develop.ACTIVITY2”), request_Code); } return false; } public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == request_Code) { if (resultCode == RESULT_OK) { Toast.makeText(this,data.getData().toString(), Toast.LENGTH_SHORT).show(); } } } public void onStart() { //... } public void onRestart() { //... } public void onResume() { //... } public void onPause() { //... } public void onStop() { //... } public void onDestroy() { //... } }
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