Develop Reference

Save and list contents in android

So I am creating an android application which opens the url entered by the user. Now each time an url is entered by the user, it needs to be save using the "save" button and the save list is seen using the "list" button.
This is my XML file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/content_main"
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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.application.mota_app.MainActivity"
tools:showIn="#layout/activity_main">
<TextView
android:text="#string/enter_the_url_below"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/enter_URL"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="26dp"
android:textSize="19sp"
android:textColor="#android:color/holo_green_dark" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/txtbox_website"
android:layout_marginTop="18dp"
android:width="300dp"
android:inputType="textUri"
android:layout_below="#+id/enter_URL"
android:layout_centerHorizontal="true" />
<Button
android:text="#string/save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btn_save"
android:textColor="#color/colorAccent"
android:onClick="save"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<Button
android:text="#string/visit"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:id="#+id/btn_visit"
android:textColor="#android:color/holo_blue_dark"
android:onClick="open"
android:layout_marginBottom="50dp"
android:layout_alignBottom="#+id/btn_save"
android:layout_centerHorizontal="true" />
<Button
android:text="#string/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btn_list"
android:onClick="list"
android:textColor="?android:attr/colorPressedHighlight"
android:layout_below="#+id/btn_save"
android:layout_alignLeft="#+id/btn_save"
android:layout_alignStart="#+id/btn_save" />
</RelativeLayout>
This is the XML for the second Activity which will be opened when the list button is clicked:
<?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">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/show"
android:scrollbars="horizontal|vertical"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="63dp" />
<TextView
android:text="#string/list_of_saved_url_s"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="23dp"
android:id="#+id/textView"
android:textColor="#color/colorAccent"
android:textSize="24sp" />
</RelativeLayout>
This is my main class:
public class MainActivity extends AppCompatActivity {
private EditText url;
private Button save;
ArrayList<String> addArray = new ArrayList<String>();
private Button list;
private ListView show1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
url = (EditText)findViewById(R.id.txtbox_website);
save = (Button)findViewById(R.id.btn_save);
list = (Button)findViewById(R.id.btn_list);
show1 = (ListView)findViewById(R.id.show);
}
public void open(View view){
if (url.getText().toString().matches("")) {
Toast.makeText(getApplicationContext(), "Enter a website to open!", Toast.LENGTH_SHORT).show();
return;
}
if (!url.getText().toString().startsWith("http://") && !url.getText().toString().startsWith("https://"))
{
url.setText("http://" + url.getText().toString());
}
if (!Patterns.WEB_URL.matcher(url.getText().toString()).matches())
{
Toast.makeText(getApplicationContext(), "Invalid URL!", Toast.LENGTH_SHORT).show();
url.setError("Enter a valid URL");
url.setText("");
url.setSelection(0);
return;
}
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url.getText().toString()));
startActivity(browserIntent);
}
public void save(View view) {
save.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String getInput = url.getText().toString();
if(addArray.contains(getInput))
{
Toast.makeText(getBaseContext(), "URL already added to the list!", Toast.LENGTH_LONG).show();
}
else if(getInput == null || getInput.trim().equals(""))
{
Toast.makeText(getBaseContext(), "Input field is empty!", Toast.LENGTH_LONG).show();
}
else{
addArray.add(getInput);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, addArray);
show1.setAdapter(adapter);
((EditText)findViewById(R.id.txtbox_website)).setText("");
}
}
});
}
public void list(View view) {
list.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent screen = new Intent(MainActivity.this, Activity2.class);
startActivity(screen);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}http://www.stackoverflow.com
return super.onOptionsItemSelected(item);
}
}
My save button and list button is not able to save and list the URLs entered by the user.
What should I add?
Thanks

1) Not Saving:
Currently you are storing data statically inside your addArray object. Which gets cleared when you close app.
I think better to use persist data storage. So you can retrieve already stored websites when app re-launched. (Like browser manages history). Available storage options
2) Not showing list:
You need to pass your current list of urls (i.e. addArray variable) in bundle when starting Activity2 And read that list inside Activity2 onCreate. Find here.
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, addArray);
show1.setAdapter(adapter);
You don't need this list adapter inside your main activity, You need to create it inside Activity2 and set this adapter in your listview.
I hope it will help you fix your issues.

Making form on android studio

I took some code to make a simple Form on Android. It seems as if some parts of the code are referencing to something. I'm not sure what to put there to make it work? I get errors.
Error:(18, 32) error: cannot find symbol variable activity_form
Error:(33, 88) error: package com.chalkstreet.learnandroid.main does not exist
Error:(48, 50) error: cannot find symbol class MainSource
Error:(57, 41) error: cannot find symbol variable menu_main
I don't think that I need to be using the package that I am not having.
Example problem:
Intent sender = new Intent(Form.this,
===> ???? com.chalkstreet.learnandroid.main.Display.class);
Here's my form:
public class Form extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_form);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//Initialize buttons and Edit Texts for form
Button btnSubmit = (Button) findViewById(R.id.button_submit);
Button btnSrc = (Button) findViewById(R.id.buttonSrc);
final EditText name = (EditText) findViewById(R.id.editText1);
final EditText email = (EditText) findViewById(R.id.editText2);
final EditText phone = (EditText) findViewById(R.id.editText4);
//Listener on Submit button
btnSubmit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent sender = new Intent(Form.this, com.chalkstreet.learnandroid.main.Display.class);
Bundle b1 = new Bundle(); //Bundle to wrap all data
b1.putString("name", name.getText().toString()); //Adding data to bundle
b1.putString("email", email.getText().toString());
b1.putString("phone", phone.getText().toString());
sender.putExtras(b1); //putExtras method to send the bundle
startActivity(sender);
Form.this.finish(); //Finish form activity to remove it from stack
}
});
//Listener on source button
btnSrc.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent j = new Intent(Form.this, MainSource.class);
startActivity(j);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
Form.this.finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
Thanks

Create a file called MainSource.java, that is if you haven't done so already, and create a file called menu_main.xml in the menu folder under the res directory and add your menu items, create another layout file in the layout folder under the res directory and name it activity_form.xml, you can then add the necessary views with the ids matching those in Form.java
More illustratively, menu_main might contain
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
</menu>
activity_form.xml could possibly be something like
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Name" />
<EditText
android:id="#+id/editText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Email" />
<EditText
android:id="#+id/editText3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Something Else" />
<EditText
android:id="#+id/editText4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Phone" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<Button
android:id="#+id/button_submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/buttonSrc"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
I have no idea what you want MainSource to do so I can't say much about that. I hope this helps.

When you create an explicit Intent, you only need to provide the starting context and the ending class.
Intent i = new Intent(FirstActivity.this, ResultActivity.class);

Android Second activity does not load

Sorry for my English.
I'm trying to use a second activity in Android, but it doesn't load. It's like the code jump it. Below, you can see the code. Thanks.
1- First Activity
public class MainActivity extends Activity
{
Button button;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
public void addListenerOnButton() {
final Context context = this;
button = (Button) findViewById(R.id.btenviardados);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
System.out.println("helooo");
Intent intent = new Intent(MainActivity.this, com.example.seven.reader.activity_janela1.class);
startActivity(intent);
System.out.println("ebadasdadas");
}
});
}
2- Second Activity
public class activity_janela1 extends Activity
{
public void OnCreate(Bundle saveInstaceState)
{
super.onCreate(saveInstaceState);
setContentView(R.layout.activity_janela1);
}}
3- First layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="I&apos;m screen 1 (main.xml)"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="#+id/btenviardados"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click me to another screen" />
4- Second layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/layoutFormulario"
android:orientation="vertical">
</LinearLayout>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Im screen 2 (main2.xml)"
android:textAppearance="?android:attr/textAppearanceLarge" />
5- AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.seven.reader"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name" >
<activity
android:label="#string/app_name"
android:name=".MainActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:label="#string/app_name"
android:name="com.example.seven.reader.activity_janela1" >
</activity>
</application>
</manifest>

You have created a method within your oncreate. Remove that and leave it in onCreate.
///public void addListenerOnButton() {
button = (Button) findViewById(R.id.btenviardados);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
System.out.println("helooo");
Intent intent = new Intent(MainActivity.this, com.example.seven.reader.activity_janela1.class);
startActivity(intent);
System.out.println("ebadasdadas");
}
});
You are misunderstanding how to use methods and scope. I recommend you do a read up on these things.

The problem is with your method addListenerOnButton().
You could define a method which will be executed when button is clicked via xml just add onClick attribute where you have defined your button.
As:-
<Button
android:id="#+id/btenviardados"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click me to another screen"
android:onClick="click" />
And define click method in MainActivity.java
as:-
public void click(View view)
{
System.out.println("helooo");
Intent intent = new Intent(MainActivity.this, com.example.seven.reader.activity_janela1.class);
startActivity(intent);
System.out.println("ebadasdadas");
}
Or you can add OnClickListener in you onCreate method of MainActivity.

Try this, may help you:
public class MainActivity extends Activity
{
Button button;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.btenviardados);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
System.out.println("helooo");
Intent intent = new Intent(getApplicationContext, activity_janela1.class);
startActivity(intent);
finish();
System.out.println("ebadasdadas");
}
});
}
}

Shared Element transition from an Activity to a fragment in Another Activity

I’m working on a project in which I have to do a shared transition.
I want to perform a transition on an ImageView from my splash Activity [First Activity] to Login Activity [Second Activity] which has the ImageView in a Fragment. The Image in my 1st Activity and The Image in the fragment of my 2nd Activity are same and Shares The Same Transition Name. I’m unable to perform the transition.
My Splash Activity Code is This
public class Splash extends Activity implements View.OnClickListener{
private ImageView imageView;
private String SharedElementname;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//getWindow().setExitTransition(R.transition.shared_element_transition_a);
if (Build.VERSION.SDK_INT >= 21) {
getWindow().setSharedElementExitTransition(TransitionInflater.from(this).inflateTransition(R.transition.shared_element_transition_a));
}
setContentView(R.layout.activity_splash);
imageView = (ImageView)findViewById(R.id.splashimage);
SharedElementname = getString(R.string.sharedname);
imageView.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_splash, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressLint("NewApi")
#Override
public void onClick(View v) {
ActivityOptionsCompat compat = ActivityOptionsCompat.makeSceneTransitionAnimation(this,v,SharedElementname);
Intent intent = new Intent(this, LoginActivity.class);
ActivityCompat.startActivity(this, intent, compat.toBundle());
}
My Login Activity Code
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(BuildConfig.MINT_API_ENABLED) {
Mint.initAndStartSession(LoginActivity.this, BuildConfig.MINT_API_KEY);
}
if (Build.VERSION.SDK_INT >= 21) {
getWindow().setSharedElementEnterTransition(TransitionInflater.from(this).inflateTransition(R.transition.shared_element_transition_a));
}
setContentView(R.layout.activity_login);
}
Some More Codes….
*****************************************************************************
My Fragment Code Within Login Activty
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
loginTab = new LoginTab();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
setSharedElementReturnTransition(TransitionInflater.from(
getActivity()).inflateTransition(R.transition.shared_element_transition_a));
setExitTransition(TransitionInflater.from(
getActivity()).inflateTransition(android.R.transition.fade));
loginTab.setSharedElementEnterTransition(TransitionInflater.from(
getActivity()).inflateTransition(R.transition.shared_element_transition_a));
loginTab.setEnterTransition(TransitionInflater.from(
getActivity()).inflateTransition(android.R.transition.fade));
}
}
Some More Codes….
*************************************************************************************
My Splash Activity XML File
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background_new"
android:orientation="vertical"
android:weightSum="1">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
android:id="#+id/SplashLayout"
>
<ImageView
android:id="#+id/splashimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:src="#drawable/eventifyd_logo"
android:transitionName="#string/sharedname"
/>
</RelativeLayout>
</LinearLayout>
My Transition XML File [Shared_element_transition]
<?xml version="1.0" encoding="utf-8"?>
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android" android:duration="5000">
<changeTransform />
<changeBounds />
<!—
I also tied ChangeImageTranform But Nothing Happened
-->
</transitionSet>
My Fragment XML File
<LinearLayout
android:layout_width="match_parent"
android:layout_marginTop="20dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:orientation="vertical"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
>
<ImageView
android:id="#+id/profile_pic_login"
android:layout_above="#+id/login_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:src="#drawable/eventifyd_logo"
android:transitionName="#string/sharedname"
/>
<TextView
android:layout_marginTop="30dp"
android:id="#+id/login_text"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/login_text"
style="#style/thin.white.large"/>
</RelativeLayout>
</LinearLayout>

I couldn't do it the way i was try. I changed the Fragments to Activity and it worked as a charm. I think Making transition from Activity to a Fragment of another activity is not Possible. Anyway, My this approach worked.

Error message when trying to load second activity?

I'm very new to Android development, and I'm following the development guide as close as I can, but I seem to have hit a snag.
I have a simple main activity with a text edit and an image button.
When the image button is clicked, the text from the text edit element should be displayed in a second activity.
But when the button is clicked...!
I've been trying to use LogCat to diagnose the issue as many other people have suggested but my understanding is too limited to find the relevant issue!
This is what it comes up with in logCat when I click the button ...
06-12 19:01:11.830: E/AndroidRuntime(853): java.lang.RuntimeException:
Unable to start activity
ComponentInfo{com.azura_apps.pylon/com.azura_apps.pylon.BeginHoax}:
java.lang.IllegalArgumentException: No view found for id 0x7f05003c
(com.azura_apps.pylon:id/container) for fragment
PlaceholderFragment{b2d445c0 #0 id=0x7f05003c}
As i have come to understand it, there could be an issue with adding the activity to the manifest correctly, but I fail to see an issue.
This is my manifest -
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.azura_apps.pylon"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.azura_apps.pylon.MainActivity"
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="com.azura_apps.pylon.BeginHoax"
android:label="#string/title_activity_begin_hoax" >
</activity>
</application>
</manifest>
I create an intent in my Main Activity with the method name I specified in my layout xml -
public class MainActivity extends ActionBarActivity {
public final static String EXTRA_MESSAGE = "com.azura_apps.Pylon.MESSAGE";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
#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;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
public void LoadHoax(View view)
{
Intent intent = new Intent(this, BeginHoax.class);
EditText editText = (EditText) findViewById(R.id.test_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
}
This is where i retrive the intent in my second activity -
public class BeginHoax extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_begin_hoax);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
Intent intent = getIntent();
String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
// Create the text view
TextView textView = new TextView(this);
textView.setTextSize(40);
textView.setText(message);
// Set the text view as the activity layout
setContentView(textView);
}
Main Activity Layout XML File -
<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="com.azura_apps.pylon.MainActivity$PlaceholderFragment" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="18dp"
android:text="#string/welcome_message" />
<EditText
android:id="#+id/test_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imageButton1"
android:layout_alignParentRight="true"
android:layout_below="#+id/textView1"
android:layout_marginTop="15dp"
android:ems="10"
android:text="#string/enter_test_message" />
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/test_message"
android:layout_marginTop="23dp"
android:layout_toLeftOf="#+id/textView1"
android:onClick="LoadHoax"
android:src="#drawable/start_scan_icon" />
</RelativeLayout>
I'm aware that this question has been answered before, but I'm having trouble applying the answers to my own code!
If anyone could point me in the right direction it would be greatly appreciated!
Thanks!

This is a guess, since you haven't posted your activity_begin_hoax xml file, but from trying to put the pieces together, this is what I'm getting:
Solution:
Erase this from your BeginHoax activity:
setContentView(R.layout.activity_begin_hoax);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
Why:
The logcat message is telling you that there is no view with id "container" to put the PlaceholderFragment in.
By default, when you create a new activity in Eclipse, it automatically generates:
a) the activity xml, which is just a fragment container named "container"
b) the fragment xml, where you can put your layout that you want that fragment to make
c) the activity java class file, including an automatic PlaceholderFragment that, by default, builds the fragment xml and puts it in the container view in the activity xml.
If at any point in your testing, you modified the activity_begin_hoax xml file to not include a fragment container with id "container", then that would explain why the app can't find it and crashes.
Since you are not actually using the PlaceholderFragment in your BeginHoax activity (instead setting the content view by making the TextView), erasing the default bits there is an option.
A BETTER option for future real-app making would be to keep the fragment container in your activity xml file, put a textview in your fragment xml file (it probably has one by default anyway), and then inside BeginHoax's fragment you can get the textview from the fragment xml file, and put the message in.
public class BeginHoax extends ActionBarActivity {
private String message;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_begin_hoax);
Intent intent = getIntent();
message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new BeginHoaxFragment()).commit();
}
}
public static class BeginHoaxFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
TextView tv = rootView.findViewById(R.id.text1);
tv.setText(message);
return rootView;
}
}