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import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView t11=(TextView)findViewById(R.id.t11);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
test();
}
public void test(){
//TextView t11=(TextView)findViewById(R.id.t11);
t11.setText("test");
}
}