单击上一个活动按钮中的按钮后，将动态按钮从android中的一个活动添加到Android中的另一个活动中

Question

I want to develop a similar kind of app(link below) How to create Button Dynamically in android? But at the same time I want to display this in another activity and not in the same activity. there are 2 edit text: 1) Button Name to be Created. 2) Destination address (for message to be send on creation of new button). whose text is getting passed to another activity for the new button creation.

when I wrote

 public void onClick(View v) {    
            // TODO Auto-generated method stub    
        final Context context1=this;    
               if(v.getId()==R.id.button4){    
     LinearLayout l1 = (LinearLayout) findViewById(R.id.layout);      
  // R.id.layout is the layout id of the xml file for the 2nd activity.    
    Intent intent1 = new Intent(context1,PCode.class);    
    Button b = new Button(this);    
    l1.addView(b);    
    startActivity(intent1);    

 }        

The activity is not moving to the 2nd activity and the program is terminating. I am able to create new button when doing in the same activity. Kindly Help .

Answer 1

In the first activity's onClick send the data using Intent:

intent = new Intent(this, PCode.class);
        intent.putExtra("EXTRA_BTN_NAME", editText.getText());
        intent.putExtra("EXTRA_WHERE", where);
        startActivity(intent);

In the new activity you should get the data with

  @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activty2);

    Intent intent = getIntent();
    String btnName = intent.getStringExtra("EXTRA_BTN_NAME");
    where= intent.getStringExtra("EXTRA_WHERE");

LinearLayout l1 = (LinearLayout) findViewById(R.id.layout);     
Intent intent1 = new Intent(context1,PCode.class);    
Button b = new Button(this);    
b.SetText(btnName);
//TODO - use the "where" parameter
l1.addView(b);

Answer 2

You can pass total 3 message through intent for every button 1) Button Name to be Created. 2) Destination address (for message to be send on creation of new button). 3) Button Action (add/remove) While in new activity you handle button action using our 3rd message of intent ie Button Action (add/remove) what action they want to perform. While in new activity you can handle using below code

  boolean isAddButton = getIntent().getBooleanExtra("ButtonAction", false);
            if(isAddButton){
             Button myButton = new Button(this);
             myButton.setText("Add Me");
             LinearLayout ll = (LinearLayout)findViewById(R.id.buttonlayout);
             LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT,                LayoutParams.WRAP_CONTENT);
             ll.addView(myButton, lp);
            }else{
             Button myButton = new Button(this);
             myButton.setText("Remove Me");

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