i have two activity files in my code, and the first activity file loads the layout search, and the second file loads layout list. I have a textbox in layout search and enter some text. I want to use this text in my second activity file but i can not reach it since it is in the layout search. How can i do this? Here the first activity file, here there is an EditText item called searchedText, and i want to use it in the second activity file.
public class SearchActivity extends Activity{
public EditText searchedText;
public RadioGroup radioGroup;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search);
}
public void onStart(){
super.onStart();
searchedText = (EditText) findViewById(R.id.searchText);
Button searchinSearchButton = (Button)findViewById(R.id.searchInSearch);
radioGroup = (RadioGroup) findViewById(R.id.radioGroup1);
searchinSearchButton.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
String searched=searchedText.getText().toString();
Intent myIntent = new Intent(v.getContext(),
SearchListActivity.class);
startActivityForResult(myIntent, 1);
}
});
}
}
And here is the second activity file:
public class SearchListActivity extends Activity{
public DatabaseAdapter db;
public ArrayList<String> myList;
public ListView listview;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
db = new DatabaseAdapter(this);
myList = new ArrayList<String>();
getContacts();
// Example of retrieving tweets of the user "mashable" and adding them to
myList
/*
ArrayList<Tweet> tweets= new ArrayList<Tweet>();
tweets.addAll(Twitter.getTimeline("mashable", 10));
for(Tweet t: tweets){
myList.add(t.username + ": " + t.message + " Tweet id: "+ t.id);
}
*/
printList();
}
public void printList(){
listview = (ListView)findViewById(R.id.contactcListView);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, myList);
listview.setAdapter(adapter);
}
public void getContacts() {
db.open();
Cursor c = db.getContactbyName("y");
if (c.moveToFirst()) {
do {
DisplayContact(c);
} while (c.moveToNext());
}
db.close();
}
public void DisplayContact(Cursor c) {
String entry = "";
// if you add another attribute to your table, you need to change 3 into x
for (int i=1; i<5;i++){
entry += c.getString(i) + "\n";
}
myList.add(entry);
}
}
In this second activity file, you can see the getContacts() method. There, i search by Cursor c = db.getContactbyName("y"); but instead of "y", i want to search whatever user enters the texbox, whic is in the 1st activity file called searchedText. How can i do this?
Thanks
Send the text as an extra in your Intent when you start your second activity.
searchinSearchButton.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
String searched=searchedText.getText().toString();
Intent myIntent = new Intent(v.getContext(),
SearchListActivity.class);
myIntent.putExtra("SEARCH_STRING",searched);
startActivityForResult(myIntent, 1);
}
});
And in your onCreate get the extra. You could use Intent.getStringExtra(String name)
In other words:
mySearched = getIntent().getStringExtra("SEARCH_STRING");
Just make sure to see if anything is null before using it.
Related
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 :)
How can i get user inputs from one activity and populate the listView with user data in another activity. I am able to get user input and populate the listView in the same activity. but now i want to get user inputs in one form and populate the list in another activity.
the code that i used to populate the listView by getting user input is as follows
public class MainActivity extends ListActivity {
ArrayList<String> list = new ArrayList<String>();
/** Declaring an ArrayAdapter to set items to ListView */
ArrayAdapter<String> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button) findViewById(R.id.btnAdd);
/** Defining the ArrayAdapter to set items to ListView */
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
/** Defining a click event listener for the button "Add" */
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
EditText edit = (EditText) findViewById(R.id.txtItem);
String name=edit.getText().toString();
list.add(name);
edit.setText("");
adapter.notifyDataSetChanged();
}
};
/** Setting the event listener for the add button */
btn.setOnClickListener(listener);
you can store your user input / data into a local database; that will allow you to access your data anywhere in the app
(recommended since you are dealing with listview).
you can use shared preferences to store data if your data is relatively small.
In your current Activity (activity contains your button), create a new Intent:
String name = "";
name = edit.getText().toString();
Intent i = new Intent(getApplicationContext(), NewActivity.class);
i.putExtra("keyword",name);
startActivity(i);
Then in the NewActivity (activity contains your Listview), retrieve those values:
Bundle extras = getIntent().getExtras();
if (extras != null) {
String name = extras.getString("keyword");
if(name != ""){
// adapter.notifyDataSetChanged();
}
}
It is simple way, hope this help
Declare a public method in second Activity like
SecondActivity.class
public static ArrayList<String> list = new ArrayList<String>();
/** Declaring an ArrayAdapter to set items to ListView */
ArrayAdapter<String> adapter
onCreate()
{
...
;
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
listview.setAdapter(adapter);
...
}
public static void ModifyList()
{
adapter.notifyDataSetChanged();
}
FirstActivity.class
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
EditText edit = (EditText) findViewById(R.id.txtItem);
String name=edit.getText().toString();
SecondActivity.list.add(name);
edit.setText("");
SecondActivity.ModifyList();
}
};
Send your ArrayList like this from FirstActivity :
Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.putStringArrayListExtra("Datalist",list);
startActivity(intent);
In secondActivity Recieve the list using :
Intent i = getIntent();
list = i.getStringArrayListExtra("Datalist");
Then display it in your SecondActivitys listview
i have an activity with some buttons in which when you click on any of buttons First with Intent send a value to another activity that contains a list view is filled with database. And I want to use this value as a parameter for where command select for filling list view with special Content
now i have a problem that when run program and when click on a button, first open a empty list view and after clicking back-button, list view is correctly displayed data.
Where is my mistake?
source MainActivity
final Intent i = new Intent(MainActivity.this,ListActivity.class);
btn_irani.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
i.putExtra("position","ایران");
startActivity(i);
startActivity(GoToList);
}
});
btn_turkie.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
i.putExtra("position","ترکیه");
startActivity(i);
startActivity(GoToList);
}
});
source ListActivity
public class ListActivity extends Activity {
String value = "";
MovieDB myDbHelper;
SQLiteDatabase db;
ListAdapter adapter;
ArrayList<HashMap<String, String>> data;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_layout);
value = getIntent().getStringExtra("position");
ListView lst=(ListView) findViewById(R.id.listView1);
Load_Database();
db = myDbHelper.getReadableDatabase();
Cursor c = db.rawQuery("select * from movie_list where product = '"+value+"'", null);
data = new ArrayList<HashMap<String, String>>();
for (; c.moveToNext();) {
HashMap<String, String> map = new HashMap<String, String>();
String img = c.getString(c.getColumnIndex("img"));
String name = c.getString(c.getColumnIndex("name"));
map.put("img", img);
map.put("name", name);
data.add(map);
}
adapter = new ListMovie(this, data);
lst.setAdapter(adapter);
}
Please Help me!
I think you have called startActivity() twice by mistake. If you want to send a value to your next Activity while calling it once startActivity() is sufficient.
I have two class Profile.class and Details.class,
In profile class i have used a spinner with values like (ATM,Banking,Personal,Others etc)
and a button (OK).
on clicking ok button it will go to next activity that is details activity where i will be taking some details like-name,description etc.
after filling the details i have given a button (save).
on clicking button save i will be saving the name and description in database but i want to save the profile name also along with details. i am unable to transfer selected spinner text from Profile.class to Details.class
how to transfer?
create.class code
public class Create extends Activity {
public ArrayList<String> array_spinner;
Button button4;
String spinnertext;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create);
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
array_spinner=new ArrayList<String>();
array_spinner.add("ATM");
array_spinner.add("Bank");
array_spinner.add("Mail");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, array_spinner);
adapter.setNotifyOnChange(true);
spinner.setAdapter(adapter);
spinner.setLongClickable(true);
spinner.setOnLongClickListener(new OnLongClickListener(){
public boolean onLongClick(View v) {
// TODO Auto-generated method stub
return false;
}}
);
button4 = (Button)findViewById(R.id.button4);
button4.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent4 = new Intent(view.getContext(), Details.class);
startActivityForResult(myIntent4, 0);
myIntent4 .putExtra("key", array_spinner.getSelectedItem().toString());
startActivity(myIntent4);
}
});
}}
details.class code
public class Details extends Activity {
EditText editText4,editText5,editText6;
Button button8,button9,button10;
TextView textView7;
String et4,et5,et6;
//SQLite Database db;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.details);
String spinnervalue = getIntent().getExtras().getString("Key");
please kindly explain me what is this "key"?
You can use :
Intent i = new Intent(MainActivity.this,SecondActivity.class);
i.putExtra("YourValueKey", yourData.getText().toString());
then you can get it from your second activity by :
Intent intent = getIntent();
String YourtransferredData = intent.getExtras().getString("YourValueKey");
example
this is what you have to write in your first activity
Intent i = new Intent(getApplicationContext(), Product.class);
i.putExtra("productname", ori);
i.putExtra("productcost", position);
i.startActivityForResult(i,0);
then in your next activity you need to have this code
String productname,productcost;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.product);
tv1= (TextView)findViewById(R.id.tv1);
tv2= (TextView)findViewById(R.id.tv2);
Bundle extras= getIntent().getExtras();
if(extras!=null)
{
position = extras.getString("position"); // get the value based on the key
tv1.setText(productname);//use where ever you want
productname = extras.getString("productname"); // get the value based on the key
tv2.setText(productname);
}
First of all take a spinner and provide value to them what you want and then the selected spinner value change it to string value and this string variable will be used in OK button to pass value through use of Intent or Shared preference to take this value to another activity and through there you can use it in database to display this value.
If you want to send data to another activity, you can do it using intent.
Bundle bund = new Bundle();
bund.putString("myKey",name);
Intent intent = new Intent(Profile.this, Detail.class);
intent.putExtras(bund);
startActivity(intent);
Now in Detail class, receive this data in onCreate()
#Override
protected void onCreate(Bundle savedInstanceState) {
.......
String nameReceived = getIntent().getExtras().getString("myKey");
}
I have given the example of passing String to another activity however, you can pass boolean, int, double etc to another activity. See the full list on here
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