[android-developers] changing background color of listview, and text inside

[ravi sharma]

my layout is


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:id="@+id/country_List"
        >

      <TextView android:id="@+id/year"
          android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#ff000099"
    android:background="#ffffff80"
    android:padding="10dp"
    android:textSize="16sp"
    android:text="1964"/>

        <TextView android:id="@+id/country"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
          android:textColor="#ffffff80"
    android:background="#ff000099"
    android:padding="10dp"
    android:textSize="16sp"
    android:text="Sweden"/>
</LinearLayout>



and i want  to change the color dynamically

but applicaiton  always crashes down


public View mainListLayout;

        private TextView txtcountry ;
        private TextView txtyear ;

        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);



                txtcountry = (TextView)findViewById(R.id.country);
                txtyear = (TextView)findViewById(R.id.year);
                mainListLayout = findViewById(R.id.country_List);
        System.out.println("COlors are " + colStr);


        mainListLayout.setBackgroundColor(Color.BLUE);

        txtcountry.setTextColor(-16711936);
                         txtyear.setTextColor(0xff00ff00);






        Typeface ty = Typeface.create(fontStr, 0);
         txtcountry.setTypeface(ty);
         txtyear.setTypeface(ty);

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