Describing the functionality of my application: I have put in a Relative Layout a TextView, an EditText and a button. All I am trying to do is: when the user writes something in the EditText and push the button, then the content of the EditText is appeared in the TextView(just like a chat-virtual chat). Everything works perfectly, but when the EditText is empty,and the button get pushed, an empty line is appeared in the TextView(and i don't want to..). Although I've tried to solve it using an if the empty line is still appearing in the TextView. I would be really greatfull, if you could help!!! Than you in advance!
Here is my code:
package teiath.android.appliacation; import android.app.Activity; import android.os.Bundle; import android.text.method.ScrollingMovementMethod; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class M_chat extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); /**Code for the scroll bars in the TextView. */ final TextView tv = (TextView)findViewById(R.id.TEXT_VIEW); tv.setMovementMethod(new ScrollingMovementMethod());//for the scroll bars /** Code for the scroll bars in the EditText. */ final EditText wr = (EditText)findViewById(R.id.EDIT_TEXT); wr.setMovementMethod(new ScrollingMovementMethod());//for the scroll bars final Button button = (Button) findViewById(R.id.btn1);//find the button by id in main.xml button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // Perform action on click String wrcontent = wr.getText().toString();//gets the text of the EditText and put it in "tvcontent" variable. String tvcontent = tv.getText().toString();//gets the text of the textView and put it in "tvcontent" variable. if (wrcontent!="")//if the EditText is not empty { //check if the TextView is empty or not if (tvcontent!="")//If it is not empty... { tv.setText(tvcontent + "\n" + wrcontent);//add its current(TextView's text) text, new line and the text of the EditText as the new text of TextView. //tv.setVisibility(0);//makes visible the textView with the cloud1.png background wr.setText("");//set the text of the Edit Text as empty //wrcontent = ""; } else//if the TextView is empty... { tv.setText(wrcontent);//add the text of the editText as the new text of the TextView wr.setText(""); } } /**if (wrcontent=="") { }*/ //finish(); } }); } } 
