Adding a Item to Listview

Adding a Item to Listview - android

Im trying to simply add a Item to a Listview and display it. But if I add it it just shows me the path of that string istead of the tring itself. I'm sure it's a simple mistake but I cant find it.
public class zutatenHinzufuegen extends AppCompatActivity {
private ArrayList<String> zutatenliste;
private ListView zutatenView;
private ArrayAdapter<String> zutatenadapter;
private TextInputLayout zutatInput;
private TextInputLayout anzahlInput;
private int anzahlint;
private String einheitInput;
private Button hinzufuegen_button;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.zutaten_hinzufuegen_linear);
getSupportActionBar().setTitle(R.string.menu_zutaten);
// Spinner
final Spinner einheiten_spinner = (Spinner) findViewById(R.id.spinner_einheiten2);
ArrayAdapter<String> einheiten_adapter = new ArrayAdapter<String>(zutatenHinzufuegen.this,
android.R.layout.simple_list_item_1,getResources().getStringArray(R.array.einheiten));
einheiten_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
einheiten_spinner.setAdapter(einheiten_adapter);
// List
zutatInput =(TextInputLayout) findViewById(R.id.textInputZutat2);
einheitInput =(String) einheiten_spinner.getSelectedItem().toString();
anzahlInput = (TextInputLayout) findViewById(R.id.textInputAnzahl2);
try {
anzahlint = Integer.parseInt(anzahlInput.toString());
}catch (NumberFormatException nfe){}
hinzufuegen_button = findViewById(R.id.zutat_hinzufuegen_button2);
zutatenView =(ListView) findViewById(R.id.zutatenliste2);
zutatenliste= new ArrayList<>();
zutatenadapter = new ArrayAdapter<String>(this,R.layout.zutatenliste_items,R.id.textitemliste,zutatenliste);
// zutatenadapter = new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_spinner_item, zutatenliste);
zutatenView.setAdapter(zutatenadapter);
hinzufuegen_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// hinzufuegen(v , einheiten_spinner);
ZutatClass newzutat = new ZutatClass(zutatInput.toString(),anzahlint,einheitInput);
zutatenliste.add((String) newzutat.zutat_sting);
zutatenadapter.notifyDataSetChanged();
}
});
}
}
This is what I see when i press the button a few times
I'm new to Android Studio and java so I hope it's not to much of a mess.
Thanks in advance.

First of all, you need to add Edittext inside the TextInputLayout and then get a text like this ZutatClass newzutat = new ZutatClass(zutatInput.getEditText().getText().toString(),anzahlint,einheitInput); on your on click method

I guess the issue is that you are trying to convert a TextInputLayout to string instead of getting the text from it and convert it to string , try the code below
hinzufuegen_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// hinzufuegen(v , einheiten_spinner);
ZutatClass newzutat = new ZutatClass(zutatInput.getEditText().getText().toString(),anzahlintgetEditText().g etText().toString()
,einheitInput);
zutatenliste.add((String) newzutat.zutat_sting);
zutatenadapter.notifyDataSetChanged();
}
});
zutatInput.toString() --> zutatInput.getEditText().getText()
anzahlint.toString() --> anzahlint.getEditText().getText().toString()

Related

How do I keep data in my Deque in Android Studio on Buttonclick?

I am trying to save data to a Deque on buttonclick and display the data in a tablelayout. My issue is that every time I trigger the onclick, the Deque loses all previous data. I tried to instantiate the Deque outside the onCreate method and it did not work. I am using a Deque as a stack because I need to display the data LIFO. Any help on this would be very much appreciated. Here is what I've tried so far:
public class MainActivity extends AppCompatActivity {
private Button buttonAdd;
private EditText editText1;
private Deque<String> input;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText editText1 = (EditText)findViewById(R.id.edit_text_1);
final Deque<String> input = new ArrayDeque<String>();
buttonAdd = (Button) findViewById(R.id.button_add);
buttonAdd.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
TableLayout table = (TableLayout) findViewById(R.id.tableLayout1);
String data = editText1.getText().toString();
input.addFirst(data);
Deque<String> inputData = input;
while (!inputData.isEmpty()) {
String s = inputData.removeFirst();
TableRow row = new TableRow(MainActivity.this);
TextView textViewData = new TextView(MainActivity.this);
textViewData.setText(s);
textViewData.setGravity(Gravity.CENTER);
row.addView(textViewData);
table.addView(row);
}
}
});
}
}

The problem is this line:
String s = inputData.removeFirst();
With this operation, you remove (delete) the next entry and since you do it in a loop:
while (!inputData.isEmpty()) {
it simply empties the queue.
What you want is to iterate over the queue without removing anything:
for (String element : inputData) {
textViewData.setText(s);
}

passing data from custom adapter to another activity

I have a listview which consist of items with prices. My listview also has a Delete button. I also have a textview at the bottom part of the layout which is not part of the listview and it shows the total amount. I can successfully remove the item from my listview. What I want is that when the item is removed, the total amount will also change.
Here is a part of my adapter where i must do some actions
holder.del.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
remove(getItem(position));
}
});
and here is my Activity where my textview of amount is found.
public class Cart extends MainActivity {
TextView amount_total;
ListView cartList;
CartCustomAdapter cartCustomAdapter;
String name, price;
static ArrayList<Order> cartArray = new ArrayList<Order>();
static Double total_amount = 0.00d;
static Double temp = 0.00d;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cart);
amount_total = (TextView) findViewById(R.id.total_tv);
Bundle bundle = getIntent().getExtras();
Button checkout = (Button) findViewById(R.id.check_out);
Button add_item = (Button) findViewById(R.id.add_item);
name = bundle.getString("i_name");
price = bundle.getString("i_price");
temp = Double.parseDouble(price);
total_amount = (total_amount + temp);
amount_total.setText("Php" + total_amount.toString());
add_item.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Cart.this,MainActivity.class);
startActivity(intent);
}
});
cartList = (ListView) findViewById(R.id.cart_list);
cartCustomAdapter = new CartCustomAdapter(Cart.this,R.layout.list_cart,cartArray);
cartList.setItemsCanFocus(false);
cartList.setAdapter(cartCustomAdapter);
cartArray.add(new Order(name,price,"1"));
cartCustomAdapter.notifyDataSetChanged();
}
}

Define an interface with method like below to update text view in your activity :
updateDeletedItemCount();
and in this method take integer and increase its count like
deletedCount++;
and then update it on text view like this
tvDeletedCount.setText("Deleted Item Count : "+ deletedCount);

This is the easiest way to do that:
//Add a method to your Cart
public void changeTotal(int totalPrice){
if(textView != null) // set total price
}
// Call after remove an item in your listener:
if(getContext() instanceOf Cart){
((Cart)getContext()).changeTotal(newTotalPrice);
}
This is not the best way, but I think it's ok for now :)

Using Text Only Once Through Random Method

I am new to Android. I am showing Text in the TextView on Button click Randomly. On 1st Textview the Heading and on 2nd the explaination of that heading. I am able to show the Heading and Explaination Randomly and now I want if the Text is shown once should not be shown again means it will be removed. This is the point where I stuck. I am not able to remove the texts. Any help will be appreciated. I am posting my code here.
MainActivity.java
TextView text_heading,text_explain;
Button click;
Random random;
Integer [] array_heading ,array_explain ;
Integer int_text;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text_heading = (TextView) findViewById(R.id.text_heading);
text_explain = (TextView) findViewById(R.id.text_explain);
click = (Button) findViewById(R.id.click);
click.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
text_heading.setText(array_heading.get(int_text)); //getting error
text_explain(array_explain.get(int_text)); //getting error
array_heading.remove(int_text); //getting error
array_explain.remove(int_text); //getting error
}
});
random = new Random();
array_heading = new Integer []{R.string.source_text1, R.string.source_text2, R.string.source_text3,
R.string.source_text6, R.string.source_text5, R.string.source_text4, R.string.source_text7,
R.string.source_text8, R.string.source_text9};
array_explain = new Integer []{R.string.source_text1_explain, R.string.source_text2_explain,
R.string.source_text3_explain,
R.string.source_text4_explain, R.string.source_text5_explain, R.string.source_text6_explain,
R.string.source_text7_explain,
R.string.source_text8_explain, R.string.source_text9_explain};
ArrayList<Integer> array_headingList = new ArrayList<Integer>(Arrays.asList(array_heading));
ArrayList<Integer>array_explainList = new ArrayList<Integer>(Arrays.asList(array_explain));
int_text = random.nextInt(array_headingList.size() - 1);
}
}

I am not able to remove the texts. Any help will be appreciated. I am
posting my code here.
To clean the content of the TextView you could pass null to setText. E.g
text_heading.setText(null);
If you want to change the content every time you click on the button, you have to move
int_text = random.nextInt(array_heading.length);
your onClick callback,
You should be aware of the fact that next int returns an int between [0, n). array_heading.length -1 is necessary only if you want to exclude R.string.source_text9_explain from the possible texts you want to show. Keep also in mind that if array_heading contains more items than array_explain you could get ArrayIndexOutBoundException

I would keep the strings together in an object:
public class Item {
private final int textId;
private final int textExplanationId;
public class Item(int textId, int textExplanationId){
this.textId = textId;
this.textExplanationId = textExplanationId;
}
public int getTextId(){return textId;}
public int getTextExplanationId(){return textExplanationId;}
}
Then I would store those in an ArrayList:
List<Item> items = new ArrayList<Item>(new Item[]{
new Item(R.string.source_text1, R.string.source_text1_explain),
new Item(R.string.source_text2, R.string.source_text2_explain),
//etc
});
Then I would shuffle that array once:
Collections.shuffle(items);
And read from it in order:
Item current = items.get(currentIndex++);
text_heading.setText(current.getTextId());
text_explain.setText(current.getTextExplanationId());

TextView text_heading,text_explain;
Button click;
Random random;
Integer [] array_heading ,array_explain ;
Integer int_text;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text_heading = (TextView) findViewById(R.id.text_heading);
text_explain = (TextView) findViewById(R.id.text_explain);
click = (Button) findViewById(R.id.click);
random = new Random();
array_heading = new Integer []{R.string.source_text1, R.string.source_text2, R.string.source_text3,
R.string.source_text6, R.string.source_text5, R.string.source_text4, R.string.source_text7,
R.string.source_text8, R.string.source_text9};
array_explain = new Integer []{R.string.source_text1_explain, R.string.source_text2_explain,
R.string.source_text3_explain,
R.string.source_text4_explain, R.string.source_text5_explain, R.string.source_text6_explain,
R.string.source_text7_explain,
R.string.source_text8_explain, R.string.source_text9_explain};
ArrayList<Integer> array_headingList = new ArrayList<Integer>(Arrays.asList(array_heading));
ArrayList<Integer> array_explainList = new ArrayList<Integer>(Arrays.asList(array_explain));
int_text = random.nextInt(array_headingList.size() - 1);
click.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
text_heading.setText(array_headingList.get(int_text)); //getting error
text_explain.setText(array_explainList.get(int_text)); //getting error
array_headingList.remove(int_text); //getting error
array_explainList.remove(int_text); //getting error
}
});
}
}

You must use ArrayList for it.
ArrayList<Integer> heading = Arrays.asList(array_heading);
ArrayList<Integer> explain = Arrays.asList(array_explain);
Now set text from this arraylists. And when its set once remove it from the arraylist so it cannot be shown again.
Use like this
random = new Random();
array_heading = new Integer []{R.string.source_text1, R.string.source_text2, R.string.source_text3,
R.string.source_text6, R.string.source_text5, R.string.source_text4, R.string.source_text7,
R.string.source_text8, R.string.source_text9};
array_explain = new Integer []{R.string.source_text1_explain, R.string.source_text2_explain,
R.string.source_text3_explain,
R.string.source_text4_explain, R.string.source_text5_explain, R.string.source_text6_explain,
R.string.source_text7_explain,
R.string.source_text8_explain, R.string.source_text9_explain};
ArrayList<Integer> array_headingList = new ArrayList<Integer>(Arrays.asList(array_heading));
ArrayList<Integer> array_explainList = new ArrayList<Integer>(Arrays.asList(array_explain));
int_text = random.nextInt(array_headingList.size());
click.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
text_heading.setText(array_headingList.get(int_text));
text_explain.setText(array_explainList.get(int_text));
array_headingList.remove(int_text);
array_explainList.remove(int_text);
if(array_headingList.size() == 0){
click.setEnabled(false);
Toast.makeText(getApplicationContext(),"All text finished",Toast.LENGTH_SHORT).show();
} else if(array_headingList.size() == 1){
int_text = 0;
} else {
int_text = random.nextInt(array_headingList.size());
}
}
});

String not being populated by edittext field. Android

There is probably a simple answer for this: when my alert box shows, I try to store the contents of a EditText in a string but, the string is always empty.
contents = inputElement.getText().toString();
code:
public class MainActivity extends Activity {
EditText inputElement;
Spinner spinner;
MySQLiteAdapters adapter;
MySQLiteHelper helper_ob;
AlertDialog dialog;
List<String> lables;
String contents;
ArrayAdapter<String> dataAdapter;
public static final String PREFS = "examplePrefs";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button start = (Button) findViewById(R.id.start);
//start.setVisibility(View.GONE);
spinner = (Spinner) findViewById(R.id.spinner1);
inputElement = new EditText(this);
adapter = new MySQLiteAdapters(getApplicationContext());
lables = adapter.getAllLabels();
exmaplePrefs = getSharedPreferences(PREFS, 0);
editor = exmaplePrefs.edit();
final AlertDialog firstTimeUse = new AlertDialog.Builder(this)
.setView(inputElement)
.setTitle("TITLE")
.setCancelable(false)
.setPositiveButton(android.R.string.ok, null).create();
firstTimeUse.setOnShowListener(new DialogInterface.OnShowListener() {
#Override
public void onShow(DialogInterface dialog) {
Button b = firstTimeUse.getButton(AlertDialog.BUTTON_POSITIVE);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
contents = inputElement.getText().toString();
if (contents.matches("")){
showAlertbox("You Must Enter a Team");
}else{
adapter.insertTeamDetails(contents);
List<String> lables = adapter.getAllLabels();
dataAdapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_spinner_item, lables);
spinner.setAdapter(dataAdapter);
lables.add("Add New Team...");
firstTimeUse.dismiss();
}
}
});
}
});
if (lables.isEmpty())
{
firstTimeUse.show();
}
else{
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
lables.add("Add New Team...");
}
Thanks in advance

You create a new instance of inputElement in onCreate:
inputElement = new EditText(this);
So the text in it is always empty as you don't add it to the layout.
Instantiate it from the layout using findViewById or add it to the layout in the code.

SetView(View view) takes view element, I am not sure how you are adding EditText there. You can add edit text in layout file itself something like this:
and declare in onCreate something like this:
inputElement = (EditText) findViewById(R.id.EditTextPassword);
You can get string like this:
inputElement.getText().toString();

how to display path in our next activity on itemselect in listview

public class Lucenconcept extends Activity {
Button btn1;
EditText mEdit;
String txt2;
public ListAdapter adapter;
private ListView lv;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
File index = new File("/sdcard/index/");
index.mkdir();
mEdit = (EditText)findViewById(R.id.editText1);
lv=(ListView) findViewById(android.R.id.list);
btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Analyzer analyzer = new StandardAnalyzer();
IndexSearcher indexSearcher;
try {
indexSearcher = new IndexSearcher("/sdcard/index/");
QueryParser parser = new QueryParser("text", analyzer);
Hits hits = indexSearcher.search( parser.parse("("+ "text:" +mEdit.getText().toString() + ")"));
String txt2[] =new String[100];
String txt="";
for (int i = 0; i < hits.length(); i++) {
Document hitDoc = hits.doc(i);
Log.i("TestAndroidLuceneActivity", "Lucene: " +hitDoc.get("title")+ hitDoc.get("path"));
txt=hitDoc.get("title");
txt2[i]=txt;
String location=hitDoc.get("path");
}
lv.setAdapter(new ArrayAdapter
<String>
(Lucenconcept.this,android.R.layout.simple_list_item_1 ,txt2));
indexSearcher.close();
}
});
}
}
I m able show title on list view I want to display path hitDoc.get("path") from this string on item selct in next activity ..
Cud any one plz help meam not able to display url in next activty while I have put all the think manifest and all the I think there is mistake in postion plz help me..

Use Intent for passing data between activities
Refer Intent example

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Adding a Item to Listview - android

First of all, you need to add Edittext inside the TextInputLayout and then get a text like this ZutatClass newzutat = new ZutatClass(zutatInput.getEditText().getText().toString(),anzahlint,einheitInput); on your on click method

Related

How do I keep data in my Deque in Android Studio on Buttonclick?

passing data from custom adapter to another activity

Using Text Only Once Through Random Method

String not being populated by edittext field. Android

how to display path in our next activity on itemselect in listview

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