CODEWITHSUNDEEP
androidbuttoncolorsandroid-edittext
jajaja
jajaja

Reputation: 389

Change Button Color when EditText is empty - android

I want to know if it's possible to change button's color when a particular edittext is empty or not empty. Like when edittext is empty, the button says "ADD" and when its not empty it says "CHANGE". Can someone help me? Thank you in advance.

Upvotes: 1

Views: 3653

Answers (3)

M D
M D

Reputation: 47817

About Button Text set like:

if(editText.getText().toString.length()>0){
yourbutton.setText("Change");
}else{
yourbutton.setText("Add");
}

And if you implement EditText addTextChangedListener then 

 editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence str, int start, int count, int after)    {

        }

        @Override
        public void onTextChanged(CharSequence str, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable str) {
             if(str.toString().trim().length()>0){
                 yourbutton.setText("Change");
             }else{
                 yourbutton.setText("Add");
             }
        }
    });

And you can also set Button Text Color dynamically like:

  yourbutton.setTextColor(Color.BLUE);

and For More information go to: http://developer.android.com/reference/android/content/res/ColorStateList.html

Upvotes: 4

Kaushik
Kaushik

Reputation: 6162

To change Button's text and background color do something like this

urEditText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                 if(s.toString().trim().length()>0){
                     urBtn.setBackgroundColor(Color.GREY);
                     urBtn.setText("Change");
                 }else{
                     urBtn.setBackgroundColor(Color.WHITE);
                     urBtn.setText("Add");
                 }
            }
        });

Upvotes: 2

Hareshkumar Chhelana
Hareshkumar Chhelana

Reputation: 24848

// try this way 

**activity_main.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="match_parent"
    android:orientation="vertical">

    <EditText
        android:id="@+id/edtValue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btnAddOrChange"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:text="Add"/>
</LinearLayout>


**MyActivity.java**
 public class MyActivity extends Activity{

    private EditText edtvalue;
    private Button btnAddOrChange;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        edtvalue = (EditText) findViewById(R.id.edtValue);
        btnAddOrChange = (Button) findViewById(R.id.btnAddOrChange);

        edtvalue.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                 if(s.toString().trim().length()>0){
                     btnAddOrChange.setText("Change");
                 }else{
                     btnAddOrChange.setText("Add");
                 }
            }
        });
    }

}

Upvotes: 2

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