Develop Reference

android working with Views

In my activity I have the following views
TextView player1;
TextView player2;
TextView player3;
TextView player4;
EditText player1name;
EditText player2name;
EditText player3name;
EditText player4name;
Each of the TextView's has the onclick listener applied to it. and so fires the OnClick function.
When we get to the onClick this is what i am currently doing:
#Override
public void onClick(View v) {
//the v variable is the clicked textview, in this case "player1"
//hide the textview and show the resultant edittext
v.setVisibility(View.GONE);
player1name.setVisibility(View.VISIBLE);
//set focus on edit text and when focus is lost hide it and set the textview text
player1name.requestFocus();
imm.showSoftInput(player1name, InputMethodManager.SHOW_FORCED);
player1name.setOnFocusChangeListener(new OnFocusChangeListener() {
#Override
public void onFocusChange(View y, boolean x) {
v.setVisibility(View.VISIBLE);
player1name.setVisibility(View.GONE);
imm.hideSoftInputFromWindow(player1name.getWindowToken(), 0);
String name = player1name.getText().toString();
if (name.equals("")) {
v.setText("Player Name1");
} else {
v.setText(name);
}
}
});
}
However with this solution I will need to duplicate this code and change the view names for player2 - player2name, player3 - player3name etc
i can obviously grab the clicked TextView via v, however what i cant seem to do is grab its corresponding EditText.
i had thought of doing this:
View test = v + "name";
//then i replace all references to player1name with the test variable
but it doesnt work it wants me to convert View test; into a string
any suggestions?
EDIT: made it easier to understand my question

View test = v + "name";
will give a compile error. Because "v" is not a string type. and also even if it was String, test is not. This line is pretty wrong.
There a few options to achieve what you want,
You can use hashmap
Declare a global field for hashmap
private final HashMap<Integer,EditText> map = new HashMap<Integer,EditText>();
and in onCreate method put your textview id as key, and put your edittext variables in value.
player1name = (EditText) findViewById(R.id.player1name);
map.put(R.id.textView1, player1name);
// for the rest
in onClick method
EditText e = map.get(v.getId());
Then replace them with "e"
e.requestFocus(); //example

Will you please state your problem clearly? Currently, your language is very ambiguous and I can not figure out, exactly what are you looking for. It will help us to know your problem and in turn solve it.

How can I change Text of Textview from other funcion?

this is my first question so I hope to make it clear.
I have one textView with some numerical text and next to it one button with one click listener and what I want is that when you click on the button the numerical value (>=0) of the TextView decrements in one.
Here is part of my code:
TextView Counter = new TextView(this);
if (intSeries != 0)
Counter.setText(Integer.toString(intSeries));
else
Counter.setText("0");
Counter.setId(4);
tablaContador.addView(Counter,Tr);
Button Done = new Button(this);
Done.setText("-1");
if (intSeries != 0)
Done.setVisibility(View.VISIBLE);
else
Done.setVisibility(View.GONE);
Done.setId(6);
Done.setOnClickListener(this);
And this is the onClick funcion (part of it):
#Override
public void onClick(final View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case 6:{
TextView text = (TextView)findViewById(4);
int series = Integer.parseInt(text.getText().toString());
series--;
text.setText(series);
if (series==0){
Button boton = (Button)findViewById(6);
boton.setVisibility(View.GONE);
}
}
}
}
The error is when I try to make the setText inside the onClick function, I hope it can be fixed or maybe recieve other idea to do it.
Thank you so much.

I would avoid all this hardcoding of Ids, use resources instead.
Your call to
text.setText(series)
is passing an int. The only valid setText(int resId) overload expects a resource associated with the int value, i.e. a string resource.
Convert your series value to a string.
Something like:
text.setText(Integer.toString(series));

You should setup series as an integer. And increase/descrease it as you wish. When you want to change the button's text convert the int to String.
Instead of:
text.setText(series);
use:
text.setText(String.valueOf(series));

Variablenames in java can't start with a capital letter. That is reserved for classnames.
Counter -> counter
Done -> done

I tried this and it worked:
//Create onClickListener
OnClickListener pickChoice = new OnClickListener()
{
public void onClick(View v)
{
TextView txt = (TextView) findViewById(4);
int number = Integer.valueOf(txt.getText().toString());
txt.setText(String.valueOf(number -1));
}
};
//Create layout
LinearLayout lnLayout = new LinearLayout(this);
lnLayout.setOrientation(LinearLayout.VERTICAL);
TextView txt = new TextView(this);
txt.setId(4);
txt.setText("0");
lnLayout.addView(txt);
Button Done = new Button(this);
Done.setText("-1");
Done.setId(6);
Done.setOnClickListener(pickChoice);
lnLayout.addView(Done);
setContentView(lnLayout);
Where are you creating your button inside? an activity? the part where you pass the onClickListener to the button doesn't make sense, maybe the button is getting a wrong listener and gets you an error every time you press the button ?
The code should be easy to understand, if there is anything you need me to explain please ask :)

List Of Text And Clickable

I want to ask how to make a list of text that we can tap in each of the text and then get the selected text to editText.
I just added the screenshot
http://i.stack.imgur.com/ddZSg.png
I have been searching it since yesterday, but I can not find exact solution. I also tried with listview, but I don't know how it's possible with horizontal, and flow list item.

I am also new in android. But I can think of the logic what you want. You can try this out if you want.
First of all, you can make your list of texts EditText by list of buttons Buttons
You can dynamically add as many Buttons with their respective text as you want to show.
set their corresponding onClickListener
In their onClickListener , create an object of the EditText you are using to add texts.
Store the value of EditText into a String Variable first.
Add the text of the clicked Button to the variable.
and now again set the text in EditText with the variable you created to store the values.
Your task will be done.
Try referring this code.
and change the code accordingly as your needs.
// Adding EditText and a button in a new linear layout and then adding
// the new linearLayout to the main layout
String[] valuesToBeAdded={"A","B","C","D"};
String selectedValues=null;
LinearLayout mainLayout=(LinearLayout) findViewById(R.id.mainLayout);
LinearLayout localLayout = new LinearLayout(context);
localLayout.setOrientation(LinearLayout.VERTICAL);
localLayout.setLayoutParams(new LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
EditText editText=new EditText(context);
editText.setText(selectedValues);
editText.setId(5000);
localLayout.addView(editText);
for(int i=0;i<valuesToBeAdded.length();i++){
Button button = new Button(context);
button.setText(R.string.scanDocument);
button.setId(i);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
EditText ed=(EditText) findViewById(5000);
selectedValues=ed.getText();
selectedValues=selectedValues +" " + this.getText();
ed.setText(selectedValues);
}
});
localLayout.addView(button);
}
mainLayout.addView(localLayout);
Thank You

Could you not make as many buttons as you need and then in the button_Click method for all buttons add:
Buttonwithtext_Click(object sender, EventArgs e)
{
editTextBox.Text = editTextBox.Text + Buttonwithtext.text + ", ":
}

Select a part of TextView text

I want to grab Text when user click on the TextView
For Example :
TextView string = "this is a test for android and textView"
When user click on textview in android position grab android
Anyone have a solution for this ?

You can assign an onClick listener to the textview, make it final and then get its text.
final TextView txt = (TextView) findViewById(R.id.txt);
txt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
String getTxt = txt.getText().toString();
}
});

TextView text = (TextView) findViewById(R.id.yourTextViewId);
text.onClickListner(this);
#Override
public void onClick() {
String textOnTextView = text.getText().toString();
}

If you want to split lines and display them in different color then refer to following links.
Split text from string
Apply color to specific text

A button has onClick , I dont think that a TextView has onClick so that a user clicks it.
Correct me if i am wrong

If you want to select part of text, try to use EditText

This is not a solution for your need. But only one step to solution.
Use setTextIsSelectable(boolean) or the TextView_textIsSelectable XML attribute to make the TextView selectable (text is not selectable by default).
Using following code, I managed to get selected text as String. You need to first select string by dragging over it.
NB: you need minimum API 11 to use setTextIsSelectable(boolean)
TextView t1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t1=(TextView) findViewById(R.id.textView1);
t1.setTextIsSelectable(true);// IMPORTANT
t1.setText("This is Android program");
t1.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_UP:
int start=t1.getSelectionStart();
int end=t1.getSelectionEnd();
String sub=t1.getText().subSequence(start, end).toString();
Toast.makeText(getBaseContext(), sub, 1).show();
}
return true;
}
});
}

Android viewing an arraylist in text view

I have a program that has a text input and a button. When I type something into the input and press the button I want that String to be added to a String Arraylist and have that Arraylist displayed in a TextView. Right now I have a method:
public void addString(View view)
{
EditText editText = (EditText) findViewById(R.id.edit_choice);
String message = editText.getText().toString();
choices.add(message);
}
"edit-choices" is the name of the text input and "choices" is the name of the array list. First of all am I doing this correctly? Second, how to I get the text view to display the contents of "choices". Right now my TextView id is just textView1

Please keep in mind that it is not the best way to show list items in a TextView. You can do this using a ListView. Anyhow, see pseudo code below (didn't test that in Eclipse, however, it should show how it is basically going to work):
public class YourActivity extends Activity {
Vector<String> choices = new Vector<String>();
public void onCreate(Bundle ....) {
(Button) myButton = (Button) findViewById(R.id.button);
myButton.setOnClickListener(new OnClickListener() {
#Override
public boolean button.onClick() {
addString();
TextView textView = (TextView) findViewById(R.id.text_view);
String listRepresentation = "";
for (String choice : choices)
if ("".equals(listRepresentation))
listRepresentation = choice; else
listRepresentation = ", " +choice;
textView.setText(listRepresentation );
}
});
}
public void addString(View view)
{
EditText editText = (EditText) findViewById(R.id.edit_choice);
String message = editText.getText().toString();
choices.add(message);
}
}
So simply assign an OnClickListener to your button that does what you need.

The question is how you want the Text to be displayed...
Either like a list view or just as a normal text.
If you want to show the text as a normal text in the text view you can simply do something like this.
for(String msg : choices)
{
textView1.setText(textView1.getText()+msg);
}
If you want the choices to be displayed in list view you need to set an adapter to the list view using the choices that you have.

First of all am I doing this correctly?
If it works for you, sure. I would maybe cache the EditText so you don't have to "find" it every time you want to access it's content.
Your only "problem" here is, that a TextView has no method that accepts a List<String>. So, you'll need to make a single string out of your list of strings.
You can simply iterate over the list and con-cat them together:
StringBuilder b = new StringBuilder();
for (String s : choices){
b.append(s+"\n");
}
textview.setText(b.toString());
This will simply build one string from all the items in your list, adding line-breaks after every item.
You'll need to set your TextView's android:inputType-attribute to textMultiLine, so it will actually show you multiple lines.