Fragment之间的通信1

main

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <FrameLayout
        android:id="@+id/fl"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="6" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/bt1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="联系人"
             />

        <Button
            android:id="@+id/bt2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="聊天"
            android:layout_weight="1" />

        <Button
            android:id="@+id/bt3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="动态"
            android:layout_weight="1" />
    </LinearLayout>

</LinearLayout>

f1 xml

<?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"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/uname"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名" />

    <EditText
        android:id="@+id/upwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入密码"
        android:password="true"
        android:singleLine="true" />

    <Button
        android:id="@+id/save"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="save" />

</LinearLayout>

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f2xml

<?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"
    android:orientation="vertical" >

    <TextView
        android:layout_gravity="center"
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30sp"
        android:text="TextView" />

    <Button
        android:layout_marginTop="50dp"
        android:layout_gravity="center"
        android:id="@+id/back"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="back" />

</LinearLayout>

public class F1 extends Fragment implements OnClickListener{
    private View view;
    private Button bt;
    private EditText uname;
    private EditText pwd;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.f1,container,false);
        return view;
    }
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        bt = (Button)view.findViewById(R.id.save);
        uname=(EditText)view.findViewById(R.id.uname);
        pwd=(EditText)view.findViewById(R.id.upwd);
        //给保存按钮设置监听
        bt.setOnClickListener(this);
        super.onActivityCreated(savedInstanceState);
    }
    @Override
    public void onClick(View v) {
        F2 f2=new F2();
        FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
        FragmentTransaction beginTransaction = fragmentManager.beginTransaction();
        beginTransaction.replace(R.id.fl,f2).addToBackStack(null);
        beginTransaction.commit();
        String g_name=uname.getText().toString();
        String g_pwd=pwd.getText().toString();
        Bundle args=new Bundle();
        args.putString("name",g_name);
        args.putString("pwd",g_pwd);
        f2.setArguments(args);
    }

}

public class F2 extends Fragment implements OnClickListener{

    private View view;
    private TextView tv;
    private Button back;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.f2,container,false);
        return view;
    }
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        tv = (TextView) view.findViewById(R.id.textView2);
        back=(Button)view.findViewById(R.id.back);
        back.setOnClickListener(this);
        Bundle agrs = getArguments();
        tv.setText(agrs.getString("name")+"----"+agrs.getString("pwd"));
        super.onActivityCreated(savedInstanceState);
    }
    @Override
    public void onClick(View v) {
        F1 f1=new F1();
        FragmentManager supportFragmentManager = getActivity().getSupportFragmentManager();
        FragmentTransaction beginTransaction = supportFragmentManager.beginTransaction();
        beginTransaction.replace(R.id.fl, f1);
        beginTransaction.commit();
    }

}

public class MainActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //创建对象
        F1 f1=new F1();
        FragmentManager supportFragmentManager = getSupportFragmentManager();
        FragmentTransaction beginTransaction = supportFragmentManager.beginTransaction();
        beginTransaction.add(R.id.fl,f1);
        beginTransaction.commit();
    }
}