Fragment传值到Fragment的操作步骤

avtivity_main.xml中：

xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="2" android:id="@+id/linearlayout_left" > <fragment android:layout_width="match_parent" android:layout_height="wrap_content" android:name="com.example.fragmentpassvaluefragment.fragments.LeftFragment" android:id="@+id/fragment_left" android:layout_gravity="center_horizontal" /> LinearLayout> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:id="@+id/linearlayout_right" android:layout_gravity="center_vertical"> <fragment android:layout_width="match_parent" android:layout_height="wrap_content" android:name="com.example.fragmentpassvaluefragment.fragments.RightFragment" android:id="@+id/fragment_right" android:layout_gravity="center_horizontal" /> LinearLayout> LinearLayout>

fragment_right.xml中：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:textSize="30sp" android:gravity="center" android:text="等待传值。。。" android:id="@+id/textView_name" /> LinearLayout>

MainActivity.java中：

package com.example.fragmentpassvaluefragment; import android.app.FragmentManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; import com.example.fragmentpassvaluefragment.fragments.PassValue; public class MainActivity extends AppCompatActivity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } }

方式一：

        LeftFragment.java中：

package com.example.fragmentpassvaluefragment.fragments; import android.app.ListFragment; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import com.example.fragmentpassvaluefragment.R; import java.util.ArrayList; import java.util.List; public class LeftFragment_bak02 extends ListFragment{ private List data; private ArrayAdapter adapter; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); data=new ArrayList<>(); for(int i=0;i<10;i++){ data.add("小陈"+i); } adapter=new ArrayAdapter(this.getActivity(),android.R.layout.simple_list_item_1,data); this.setListAdapter(adapter); } @Override public void onListItemClick(ListView l, View v, int position, long id) { String item=data.get(position); TextView textView_name= (TextView) getActivity().getFragmentManager().findFragmentById(R.id.fragment_right).getView().findViewById(R.id.textView_name); textView_name.setText(item); } }

        RightFragment.java 中:

package com.example.fragmentpassvaluefragment.fragments; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import com.example.fragmentpassvaluefragment.R; public class RightFragment_bak02 extends Fragment{ @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view=inflater.inflate(R.layout.fragment_right,null); return view; } }

方式二： 

        LeftFragment.java中：

       

package com.example.fragmentpassvaluefragment.fragments; import android.app.ListFragment; import android.os.Bundle; import android.widget.ArrayAdapter; import java.util.ArrayList; import java.util.List; public class LeftFragment_bak03 extends ListFragment{ private List data; private ArrayAdapter adapter; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); data=new ArrayList<>(); for(int i=0;i<10;i++){ data.add("小陈"+i); } adapter=new ArrayAdapter(this.getActivity(),android.R.layout.simple_list_item_1,data); this.setListAdapter(adapter); } }

        RightFragment.java中：

package com.example.fragmentpassvaluefragment.fragments; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ListView; import android.widget.TextView; import com.example.fragmentpassvaluefragment.R; public class RightFragment_bak03 extends Fragment{ @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view=inflater.inflate(R.layout.fragment_right,null); final TextView textView_name= (TextView) view.findViewById(R.id.textView_name); LeftFragment leftFragment= (LeftFragment) getActivity().getFragmentManager().findFragmentById(R.id.fragment_left); ListView listView=leftFragment.getListView(); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView adapterView, View view, int i, long l) { String name=((TextView)view).getText().toString(); textView_name.setText(name); } }); return view; } }

方式三：

        LeftFragment.java中：

package com.example.fragmentpassvaluefragment.fragments; import android.app.ListFragment; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import com.example.fragmentpassvaluefragment.R; import java.util.ArrayList; import java.util.List; public class LeftFragment extends ListFragment{ private List data; private ArrayAdapter adapter; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); data=new ArrayList<>(); for(int i=0;i<10;i++){ data.add("小陈"+i); } adapter=new ArrayAdapter(this.getActivity(),android.R.layout.simple_list_item_1,data); this.setListAdapter(adapter); } @Override public void onListItemClick(ListView l, View v, int position, long id) { String name=data.get(position); RightFragment rightFragment= (RightFragment) getActivity().getFragmentManager().findFragmentById(R.id.fragment_right); rightFragment.setName(name); } }

        RightFragment.java中：

package com.example.fragmentpassvaluefragment.fragments; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ListView; import android.widget.TextView; import com.example.fragmentpassvaluefragment.R; /** * Created by TF on 2018/6/14. */ public class RightFragment extends Fragment{ private TextView textView; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view=inflater.inflate(R.layout.fragment_right,null); textView= (TextView) view.findViewById(R.id.textView_name); return view; } public void setName(String name) { textView.setText(name); } }