Fragment----静态创建碎片

 import android.os.Bundle;
 import android.app.Activity;
 import android.app.Fragment;
 import android.app.FragmentManager;
 import android.view.Menu;
 import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;

 /**
  *
  * 有3个fragment，当点击按钮时，显示第二个fragment的textView的内容
  * @author qq
  *
  */
 public class MainActivity extends Activity {

     private FragmentManager manager;//fragment管理器

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
     }

     public void showInfo(View v)
     {
         //获取碎片管理器----可以直接在 activity获取到
         manager = getFragmentManager();

         //使用碎片管理器得到需要的碎片对象
         Fragment fragment = manager.findFragmentById(R.id.fragment1);

         //得到碎片对象中的布局对象
         View view = fragment.getView();

         TextView textView = (TextView)view;

         Toast.makeText(this, textView.getText(), Toast.LENGTH_SHORT).show();

     }

 }

MainActivity

 import com.example.gp08_day23_fragment2.R;

 import android.app.Fragment;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

 public class TestFragment extends Fragment {

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {

         return  inflater.inflate(R.layout.fragment_layout, null);
     }

 }

TetsFragment