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public class MainActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b = (Button)findViewById(R.id.bt);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
setContentView(R.layout.ooo);
}
});
}
}