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);
Related
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.
when I send strings via put extra the underlined words will not be underlined
<string name="s_hello_txt">\n{ <u>hello all</u> }\n</string>
MainActivity Button Code
public void c_hello(View v){
Intent hello= new Intent(MainActivity.this,
MainTextActivity.class);
intent_collection_e3tiraf.putExtra("key",getResources().getString(R.string.s_hello_txt));
startActivity(hello);
finish();
}
MainActivityText onCreate Code
textview = (TextView) findViewById(R.id.id_text_txt);
Intent n = getIntent();
String mrng = n.getStringExtra("key");
textview.setText(mrng);
if I put a text with direct string it will be underlined
For Example if I put in the layout of MainActivityText(activity_maintext.xml)
<TextView
android:id="#+id/id_dailyprayers_txt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/s_hello_txt"
android:textSize="30sp" />
the textview in MainActivityText Show the text(hello all) underlined
any help!!!!
As long as the string still has the underline html you should be able to utilize the Html.fromHtml method to style the string.
textview.setText(Html.fromHtml(mrng));
Actually, the string getResource().getString(R.string.s_hello_txt) is not be underlined.
The best way to add html source code in strings.xml is to use <![CDATA[html source code]]>. Here is an example:
<string name="s_hello_txt"><![CDATA[<u>Text</u>]]></string>
And then use Html.fromHtml(mrng) to show the underlined string
// Try This One This Will Help For Your Acheivement
**String.xml**
<string name="s_hello_txt"><br/>{ <u>hello all</u> }<br/></string>
**activity_main1.xml**
<?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="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/txtValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/s_hello_txt"/>
<Button
android:id="#+id/btnClick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GoTo Second Activity"/>
</LinearLayout>
**MainActivity1 Activity**
public class MainActivity1 extends Activity {
private Button btnClick;
private TextView txtValue;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
txtValue = (TextView)findViewById(R.id.txtValue);
btnClick = (Button)findViewById(R.id.btnClick);
txtValue.setText(Html.fromHtml(getString(R.string.s_hello_txt)));
btnClick.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(MainActivity1.this, MainActivity2.class);
intent.putExtra("EXTRA",getString(R.string.s_hello_txt));
startActivity(intent);
}
});
}
}
**activity_main2.xml**
<?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="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/txtValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
**MainActivity2 Activity**
public class MainActivity2 extends Activity {
private TextView txtValue;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
txtValue = (TextView)findViewById(R.id.txtValue);
txtValue.setText(Html.fromHtml(getIntent().getStringExtra("EXTRA")));
}
}
I have Googled and read several Stack Overflow answers and I am pretty sure the problem is with my layout file here. I also cleaned my project so my R.java file was deleted, but I think after I find the error it will be auto-generated.
Here is my XML code.
<LinearLayout
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:orientation="vertical"
android:padding="20sp"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/update"
android:textSize="25sp" />
<EditText
android:id="#+id/guess"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:textSize="26sp" />
<TextView
android:id="#+id/display"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="6sp"
android:paddingTop="6sp"
android:text="#string/default"
android:textSize="18sp" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:onClick="evaluate"
android:text="#string/btn" />
</LinearLayout>
Here are the java lines where there is an error shown, in case there's a problem here:
Button button = (Button) view;
TextView log = (TextView)(findViewById(R.id.display));
EditText field = (EditText)(findViewById(R.id.guess));
Update: Here is my evaluate method from the MainActivity.java file
public void evaluate(View view)
{
Button button = (Button) view;
TextView log = (TextView)(findViewById(R.id.display));
EditText field = (EditText)(findViewById(R.id.guess));
if(button.getText().toString().charAt(0) == 'S')
{
int guess = Integer.parseInt(field.getText().toString());
if(guess == num)
{
log.setText("Congratulations! You guessed it in " + guessCount + "moves");
button.setText("New game");
}
else
{
guessCount++;
if(guess < num)
log.setText("Try again. Too low");
else
log.setText("Try again. Too high");
}
}
else
refresh(button, log);
}
R.java is deleted whenever there exists any compile error in res folder or in AndroidManifest.xml file. Assuming you have no compile errors(except the files that should be referencing fields in R.java), my first call is to look at evaluate method to see if it is in the current invoking Activity as follows:
Java Code:
public class MyActivity extends Activity {
Button button;
TextView log;
EditText field;
...
...
#Override
public void onCreate(Bundle savedInstanceState) {
button = (Button) new Button(this);
log = (TextView) findViewById(R.id.display);
field = (EditText) findViewById(R.id.guess);
...
...
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
evaluate(v);
}
});
}
...
...
// **evaluate** is visible(public) and
// within the same activity where the **button** is
public void evaluate(View v) {
...
...
}
}
`
doesn't eclipse show you any error in the foler of res?
in the line of: android:onClick="evaluate", I haven't seen such value before, is it correct?
I'm very new to programming in Android, but have been struggling all day with a problem and would appreciate your help.
I'm trying to create a form to get user information (essentially a new contact) which is accessed from the menu. When I click the button to create the new form, I get the following error:
"Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy#626fd5e0"
This is my code:
The menu xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/search"
android:title="#string/settings_search"
android:alphabeticShortcut="#string/settings_shortcut_search" />
<item android:id="#+id/new_contact"
android:title="#string/settings_new"
android:alphabeticShortcut="#string/settings_shortcut_new" />
</menu>
The code for calling the new activity:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.new_contact:
//activities to create a new account
//startActivity(new Intent(this, Prefs.class));
Intent i = new Intent(MainActivity.this, NewContact.class);
startActivity(i);
//addSaver("String");
return true;
case R.id.search:
return true;
// More items go here (if any) ...
}
return false;
}
The view for the new contact activity:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">"
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_gravity="top">
<TextView
android:id="#+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="This is a test\nsecond line\n"/>
<Button
android:id="#+id/new_contact_button"
android:layout_height="wrap_content"
android:text="#string/submit" />
</LinearLayout>
</ScrollView>
And the code for the new activity:
public class NewContact extends Activity implements OnClickListener {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_contact);
// Set up click listeners for all the buttons
View newContactButton = findViewById(R.id.new_contact_button);
newContactButton.setOnClickListener(this);
}
Bizarrely if I comment out the button from the class and from the xml then it works correctly and opens up the new activity (but of course I can't do anything with that activity).
In your button xml code, you are missing
android:layout_width="wrap_content"
add that and give it a shot.
public class Page1 extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
final Button button = (Button) findViewById(R.id.welcome);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = null;
myIntent = new Intent(view.getContext(), Page1.class);
startActivity(myIntent);
}
});
}
}
I want to load contents from another XML file named welcome.xml, but i do get an error welcome cannot be resolved or is not a field
This Page1.java class is next screen of my Android Application.
My Welcome.xml
<Button android:text="#+id/Button01" android:id="#+id/welcome"
android:layout_width="wrap_content" android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
</Button>
It should be working.
If you don't set the handler, do you see the button in the screen?
Is the file actually named «*W*elcome.xml»? Try to remove the capital letter (rename it to welcome.xml). Then do a clean, rebuild and check if it works now...
Could you paste your complete xml file and log? my first guess is you have a case issue , your layout file is named "Welcome" and you have setContentView to "welcome" . Also dont have same names for layouts and controls , it will get confusing.
firend you are making silly mistake:see this
public class Page1 extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
final Button button = (Button) findViewById(**R.id.Button01**);//use id of button here not layout name
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = null;
myIntent = new Intent(view.getContext(), Page1.class);
startActivity(myIntent);
}
});
}
}
Is this all what your welcome.xml has?
Your button isn't under a layout. thus, the layout file itself will be throwing out exceptions.
secondly, android:text is not correct. the entry you have made there, should be under android:id
and it shouldn't be:
final Button button = (Button) findViewById(R.id.welcome);
but:
final Button button = (Button) findViewById(R.id.Button01);
The Welcome.xml contains Button with id welcome which is not an layout to setContentView
Views can be List, relative, absolute table etc .. in which you can add a button.
And also check for the Case in filename and specified R.layout.*
Sample xml file with linearlayout and a button. Save it as welcome.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="#+id/linearlayoutmain"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<Button
android:id="#+id/ButtonWelcome"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/button"
>
</Button>
</LinearLayout>
in Your Code
public class Page1 extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
final Button button = (Button) findViewById(R.id.ButtonWelcome);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = null;
**//You have called Page1.class again which is the name of this class //again**
myIntent = new Intent(view.getContext(), Page1.class);
startActivity(myIntent);
}
});
}
}
Create another activity similarly and the call that class in the intent marked bold.
Your Welcome.xml is not complete, should be something like this :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:padding="3dip"
android:orientation="vertical">
<Button android:text="#+id/Button01" android:id="#+id/welcome"
android:layout_width="wrap_content" android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
</Button>
</LinearLayout>
Also, if your are still having problemas, try to clean your project so the R.java get updated with new id values like welcome id (R.id.welcome),because if R.java does not contain welcome id, you will get errors like that.