Question

I’m new to android platform , I’d like to settext using textviews , I tried to write set text into two textviews but its just draws one textview why?
I can’t draw two textviews

TextView tv1;
TextView tv2;

@Override

public void onCreate(Bundle savedInstanceState)

{

     super.onCreate(savedInstanceState);

     layout = new LinearLayout(this);

     tv1 = new TextView(this);

     tv2 = new TextView(this);
     tv1.setText("Hello");

     tv2.setText("How are you?");

}

Answer 1

On Android, the user interface normally should be created using XML-files, instead of Java code. You should read up on the tutorials on android.com, especially:

http://developer.android.com/guide/topics/ui/declaring-layout.html

An example:

In your res/layout/main.xml, you define the text TextView’s:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
 <TextView android:id="@+id/TextView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="TextView 1"/>
 <TextView android:id="@+id/TextView2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="TextView 2"/> 
</LinearLayout>

Then if you use setContentView in the activity to display this, the app will show to TextView’s:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.main);
}

If you want to programmatically set the text in the Activity, just use findViewById():

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.main);
    ((TextView)this.findViewById(R.id.TextView1)).setText("Setting text of TextView1");
}