How to add a button dynamically in Android?

Question

How to add a button dynamically in Android?

Answer 1

Button myButton = new Button(this);
myButton.setId(123);
myButton.setText("Push Me");


LinearLayout ll = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
ll.addView(myButton, lp);
 myButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Toast.makeText(DynamicLayout.this,
                        "Button clicked index = " + id_, Toast.LENGTH_SHORT)
                        .show();
            }
        });

Answer 2

try this

private void createLayoutDynamically(int n) {

    for (int i = 0; i < n; i++) {
        Button myButton = new Button(this);
        myButton.setText("Button :"+i);
        myButton.setId(i);
        final int id_ = myButton.getId();

        LinearLayout layout = (LinearLayout) findViewById(R.id.myDynamicLayout);
        layout.addView(myButton);

        myButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Toast.makeText(DynamicLayout.this,
                        "Button clicked index = " + id_, Toast.LENGTH_SHORT)
                        .show();
            }
        });
    }

Answer 3

Button myButton = new Button(this);
myButton.setText("Push Me");

LinearLayout ll = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
ll.addView(myButton, lp);

Have a look to this example

Answer 4

Try this code

 Button btn=new Button(this);
btn.setId(btn);
btn.setBackgroundResource(R.drawable.image);
btn.setMinimumHeight(150);
btn.setMinimumWidth(150);
Relativelayout.addView(btn); 

Answer 5

Try this code. It will work fine..

public class DynamicViewsActivity extends Activity {

Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.activity_dynamic_views);
    ScrollView scrl=new ScrollView(this);
    final LinearLayout ll=new LinearLayout(this);
    ll.setOrientation(LinearLayout.HORIZONTAL);
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    layoutParams.setMargins(100, 500, 100, 200);
    scrl.addView(ll);
    Button add_btn=new Button(this);
    add_btn.setText("Click Here");

    ll.addView(add_btn, layoutParams);


    final Context context = this;

    add_btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            Intent intent = new Intent(context, App2Activity.class);
            startActivity(intent);
        }
    });
    this.setContentView(scrl);
}
}

Answer 6

Button btn = new Button(this);
btn.setText("Submit");
LinearLayout linearLayout = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams buttonlayout = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
linearLayout.addView(btn, buttonlayout);