Fragment向Fragment传值（第一种）

来源：互联网发布：云计算峰会的会议定位编辑：程序博客网时间：2024/05/21 04:19

1.fragment通过回调接口将值返给Activity

2.Activity 通过setArguments 传值给另一个Fragment

代码：

Fragment1 ：

package com.qianfeng.fragmenttofragment1;import android.annotation.SuppressLint;import android.app.Activity;import android.app.Fragment;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.EditText;@SuppressLint("NewApi")public class Fragmet1 extends Fragment{private EditText et1;private Button btn1;CallBackValues callBackValues;@Overridepublic void onAttach(Activity activity) {// TODO Auto-generated method stubsuper.onAttach(activity);//得到activity中回调接口的实例化对象callBackValues =(CallBackValues) getActivity();}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {// TODO Auto-generated method stub/** * 第一个参数：布局资源id  唯一标示 * 第二个参数：表示当前父布局容器 * 第三个参数：表示是否追加父布局容器 */View view = inflater.inflate(R.layout.fragment_layout1, container, false);et1 = (EditText) view.findViewById(R.id.et1);btn1 = (Button) view.findViewById(R.id.btn1);//监听按钮点击事件 将值传给activitybtn1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubString strValues = et1.getText().toString().trim();callBackValues.SendMessage(strValues);}});return view;}//定义回调接口public interface CallBackValues{public void SendMessage(String StrValues);}}

Activity：

package com.qianfeng.fragmenttofragment1;import android.annotation.SuppressLint;import android.app.Activity;import android.app.Fragment;import android.app.FragmentManager;import android.app.FragmentTransaction;import android.os.Bundle;import com.qianfeng.fragmenttofragment1.Fragmet1.CallBackValues;@SuppressLint("NewApi")public class MainActivity extends Activity implements CallBackValues{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic void SendMessage(String StrValues) {// TODO Auto-generated method stub//得到FragmentManager对象FragmentManager manager = getFragmentManager();//得到FragmentTransaction对象FragmentTransaction transaction = manager.beginTransaction();//得到Fragment2 对象Fragment2 fragment2 = new Fragment2();Bundle bundle  = new Bundle();bundle.putString("str", StrValues);fragment2.setArguments(bundle);//将fragment2 替换布局transaction.replace(R.id.contents, fragment2);transaction.commit();//提交事务}}

Fragment2：

package com.qianfeng.fragmenttofragment1;import android.annotation.SuppressLint;import android.app.Fragment;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;@SuppressLint("NewApi")public class Fragment2 extends Fragment {@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {/** * 第一个参数：布局资源id 唯一标示 第二个参数：表示当前父布局容器 第三个参数：表示是否追加父布局容器 */View view = inflater.inflate(R.layout.fragment_layout2, container,false);TextView tv_show =(TextView) view.findViewById(R.id.tv_show);//得到activity传过来的bundle对象Bundle bundle = getArguments();if(bundle!=null){tv_show.setText(bundle.getString("str"));}return view;}}

0 0