How do I add a TextView to another activity

Question

Suppose I have two activities namely AddView and SeeView.

In SeeView, there is a button that would take me to AddView activity. In AddView activity, I will enter the text that will be shown on the SeeView as TextView.

Then, clicking a button on AddView, I will be taken to the SeeView where the added TextView from AddView is displayed. How do I do this programmatically?

Answer 1

Views are neved transferred between activities, what you want to do is to pass the text. For that you should use startActivityForResult() and onActivityResult() methods of your activity:

public class SeeView extends Activity {
    public static final int REQ_CODE_ADD_VIEW;

    private TextView textViewWithText;

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

        //this TextView is defined in xml: /res/layout/layout_of_see_view.xml
        //make sure its id is "@+id/text_view_with_text"
        textViewWithText=(TextView) findViewById(R.id.text_view_with_text);

        findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //intent for AddView activity
                Intent intent=...;
                startActivityForResult(intent, REQ_CODE_ADD_VIEW, null);
            }
        })
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode,resultCode,data);

        if (resultCode==RESULT_OK) {
            if (requestCode==REQ_CODE_ADD_VIEW) {
                String text=data.getStringExtra("text", "");
                textViewWithText.setText(text);
            }
        }
    }
}

your second activity:

public class AddView extends Activity {   
    private EditText editText;

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

        //this is done in case user quits your activity before
        //button is pressed
        setResult(RESULT_CANCELLED);    

        textViewWithText=(TextView) findViewById(R.id.edit_text);

        findViewById(R.id.another_button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //prepare result for SeeView activity
                Intent intent=new Intent();
                intent.putStringExtra("text", editText.getText().toString());
                //set the result, it will be passed to onActivityResult() in SeeView activity
                setResult(RESULT_OK, intent);
                finish();
            }
        })
    }
}

Answer 2

In your FirstActivity say main activity you have a editext and a button. User enters the values in editext. On Button click get that value. Use intents to pass the value to the secondactivity. In second activity retrieve the value and display the same in textview.

     addView.setOnClickListener(new OnClickListener()
    {
       Intent i= new Intent("com.example.secondActivity");
      // Package name and activity
      // Intent i= new Intent(MainActivity.this,SecondActivity.Class);
      // Explicit intents
      i.putExtra("key",editext.getText().toString());//get value from editext
      // Parameter 1 is the key
      // Parameter 2 is your value
      startActiivty(i);
    });

In your second Activity retrieve it:

      Bundle extras = getIntent().();
      if (extras != null) {
       TextView tv= (TextView) findViewById(R.id.textview) 
      String value = extras.getString("key");
       //get the value based on the key 
       tv.setText(value);
      }

Edit: In your second activity you can do something similar as below

second.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="74dp"
    android:src="@drawable/ic_launcher" />

<LinearLayout
    android:layout_width="fill_parent"
    android:id="@+id/ll"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_marginBottom="157dp"
    android:orientation="vertical" >

  </LinearLayout>

 </RelativeLayout>

SecondActivity

    public class SecondActivity extends Activity{


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.second);
    LinearLayout ll = (LinearLayout) findViewById(R.id.ll);
    Bundle extras = getIntent().getExtras();
    if(extras!=null)
    {
        TextView tv= new TextView(this);
        tv.setText(extras.getString("key").toString());
        ll.addView(tv);
    }
}
}