安卓开发问题,我是菜鸟

我想开发安卓阅读器,首先实现的内容是读取TXT文件。我想在新页面中打开文件,不知道怎么实现
我瞎弄了这个代码
public class MainActivity extends Activity {
Button button1;TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

  button1=(Button)this.findViewById(R.id.button1);
  textView = (TextView) findViewById(R.id.textView1);
  button1.setOnClickListener(new OnClickListener(){

public void onClick(View v) {
protected void onCreate(Bundle savedInstanceState){(这行显示multiple markers at this line)
       super.onCreate();
    InputStream inputStream = getResources().openRawResource(R.raw.aa);

String string = reader.getString(inputStream);
textView.setText(string);
}
}
});

}

}
求解决