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Java 在片段之间传递数据 我正在尝试将一个片段的数据从编辑文本传递到与其他片段关联的文本视图

java android android-fragments

Java 在片段之间传递数据 我正在尝试将一个片段的数据从编辑文本传递到与其他片段关联的文本视图,java,android,android-fragments,Java,Android,Android Fragments,我遵循在片段之间传递数据的静态方式 活动\u main.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > &l

我遵循在片段之间传递数据的静态方式

活动\u main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <fragment
        android:id="@+id/fragment2"
        android:name="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <fragment
        android:id="@+id/fragment1"
        android:name="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="80dp"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="Click to send data to next Activity" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="TextView"
        android:textSize="40dp" />

</RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <fragment
        android:id="@+id/fragment2"
        class="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <fragment
        android:id="@+id/fragment1"
        class="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>
Fragment2.java

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
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;

public class Fragment1 extends Fragment{

    Button button;
    EditText textedit;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        View view=inflater.inflate(R.layout.fragment_1, container, false);

        button=(Button) view.findViewById(R.id.button1);
        textedit=(EditText) view.findViewById(R.id.editText1);


        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                FragmentManager FM = getFragmentManager();
                Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

                f2.setName(textedit.getText().toString());

            }
        });

        return view;
    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class Fragment2 extends Fragment{

    View view;
    TextView txtview;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        view=inflater.inflate(R.layout.fragment_2, container, false);

        return view;
    }


    public void setName(String Name){

        txtview=(TextView) view.findViewById(R.id.textView1);
        txtview.setText("Hello:: " +Name);

    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
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;

public class Fragment1 extends Fragment{

    Button button;
    EditText textedit;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        View view=inflater.inflate(R.layout.fragment_1, container, false);

        button=(Button) view.findViewById(R.id.button1);
        textedit=(EditText) view.findViewById(R.id.editText1);


        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                FragmentManager FM = getActivity().getSupportFragmentManager();
                Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

                f2.setName(textedit.getText().toString());

            }
        });

        return view;
    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

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


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}
[编辑] 活动\u main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <fragment
        android:id="@+id/fragment2"
        android:name="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <fragment
        android:id="@+id/fragment1"
        android:name="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="80dp"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="Click to send data to next Activity" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="TextView"
        android:textSize="40dp" />

</RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <fragment
        android:id="@+id/fragment2"
        class="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <fragment
        android:id="@+id/fragment1"
        class="com.example.usingtwofragmentsfornavigatingbetweentwoactivities.Fragment1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>
日志：

10-30 14:37:32.900: D/AndroidRuntime(460): Shutting down VM
10-30 14:37:32.900: W/dalvikvm(460): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-30 14:37:32.940: E/AndroidRuntime(460): FATAL EXCEPTION: main
10-30 14:37:32.940: E/AndroidRuntime(460): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.usingtwofragmentsfornavigatingbetweentwoactivities/com.example.usingtwofragmentsfornavigatingbetweentwoactivities.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.os.Looper.loop(Looper.java:123)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread.main(ActivityThread.java:4627)
10-30 14:37:32.940: E/AndroidRuntime(460):  at java.lang.reflect.Method.invokeNative(Native Method)
10-30 14:37:32.940: E/AndroidRuntime(460):  at java.lang.reflect.Method.invoke(Method.java:521)
10-30 14:37:32.940: E/AndroidRuntime(460):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-30 14:37:32.940: E/AndroidRuntime(460):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-30 14:37:32.940: E/AndroidRuntime(460):  at dalvik.system.NativeStart.main(Native Method)
10-30 14:37:32.940: E/AndroidRuntime(460): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
10-30 14:37:32.940: E/AndroidRuntime(460):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.Activity.setContentView(Activity.java:1647)
10-30 14:37:32.940: E/AndroidRuntime(460):  at com.example.usingtwofragmentsfornavigatingbetweentwoactivities.MainActivity.onCreate(MainActivity.java:12)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
10-30 14:37:32.940: E/AndroidRuntime(460):  ... 11 more
10-30 14:37:32.940: E/AndroidRuntime(460): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.example.usingtwofragmentsfornavigatingbetweentwoactivities-2.apk]
10-30 14:37:32.940: E/AndroidRuntime(460):  at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
10-30 14:37:32.940: E/AndroidRuntime(460):  at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
10-30 14:37:32.940: E/AndroidRuntime(460):  at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.createView(LayoutInflater.java:466)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:544)
10-30 14:37:32.940: E/AndroidRuntime(460):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
10-30 14:37:32.940: E/AndroidRuntime(460):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
10-30 14:37:32.940: E/AndroidRuntime(460):  ... 20 more
MainActivity.java

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
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;

public class Fragment1 extends Fragment{

    Button button;
    EditText textedit;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        View view=inflater.inflate(R.layout.fragment_1, container, false);

        button=(Button) view.findViewById(R.id.button1);
        textedit=(EditText) view.findViewById(R.id.editText1);


        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                FragmentManager FM = getFragmentManager();
                Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

                f2.setName(textedit.getText().toString());

            }
        });

        return view;
    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class Fragment2 extends Fragment{

    View view;
    TextView txtview;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        view=inflater.inflate(R.layout.fragment_2, container, false);

        return view;
    }


    public void setName(String Name){

        txtview=(TextView) view.findViewById(R.id.textView1);
        txtview.setText("Hello:: " +Name);

    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
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;

public class Fragment1 extends Fragment{

    Button button;
    EditText textedit;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        View view=inflater.inflate(R.layout.fragment_1, container, false);

        button=(Button) view.findViewById(R.id.button1);
        textedit=(EditText) view.findViewById(R.id.editText1);


        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                FragmentManager FM = getActivity().getSupportFragmentManager();
                Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

                f2.setName(textedit.getText().toString());

            }
        });

        return view;
    }


}

package com.example.usingtwofragmentsfornavigatingbetweentwoactivities;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

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


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

如何解决此问题？

java.lang.ClassNotFoundException: android.view.fragment
您不需要从支持库导入此片段，并且您的设备是旧的Android 3之前的版本。应该是

import android.support.v4.app.Fragment;
在xml更改中也是如此

android:name
与

您不需要从支持库导入此片段，并且您的设备是旧的Android 3之前的版本。应该是

import android.support.v4.app.Fragment;
在xml更改中也是如此

android:name
与

在
Fragment1
中，单击
按钮1
，执行以下操作：

FragmentManager FM = getActivity().getSupportFragmentManager();
            Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

            f2.setName(textedit.getText().toString());
我希望这会有帮助

在
Fragment1
内单击
按钮1
，执行以下操作：

FragmentManager FM = getActivity().getSupportFragmentManager();
            Fragment2 f2=(Fragment2) FM.findFragmentById(R.id.fragment2);

            f2.setName(textedit.getText().toString());
我希望这会有帮助

尝试使用SharedReferences，或在MainActivity中保存值，或使用SingleTon尝试使用SharedReferences，或在MainActivity中保存值，或使用SingleTony android设备is 2.2。。。。。。但我在所有活动中都使用了支持片段。。。。。请看一看，我甚至已经发布了舱单。。。。。。。您能指出我没有导入支持包的活动吗？我看到您在Fragment2中使用了支持包。检查Fragment1，而不是getFragmentManager（），您必须使用getSupportFragmentManager（）；所有这些都必须来自支持包。你不能把周围的东西都混在一起，你也有同样的例外吗？尝试使用clean和rebuild实际上错误在于我在mainActivity.java中使用了常规活动来扩展而不是片段活动，所以。。。我解决了它我的安卓设备是2.2。。。。。。但我在所有活动中都使用了支持片段。。。。。请看一看，我甚至已经发布了舱单。。。。。。。您能指出我没有导入支持包的活动吗？我看到您在Fragment2中使用了支持包。检查Fragment1，而不是getFragmentManager（），您必须使用getSupportFragmentManager（）；所有这些都必须来自支持包。你不能把周围的东西都混在一起，你也有同样的例外吗？尝试使用clean和rebuild实际上错误在于我在mainActivity.java中使用了常规活动来扩展而不是片段活动，所以。。。我解决了它我反映了所有的变化。。。请看一下问题中的编辑实际上错误是我在mainActivity.java中使用了常规活动来扩展而不是片段活动，所以。。。我解决了it@smriti3：我认为我的答案是正确的，因为我已经发布了关于
getActivity.getSupportFragmentManager（）
我已经为blackbelt选择了答案。。。。。。。所以[+1]支持你分享信息并帮助我：）：）@smriti3：这与支持或声誉无关。这只是为了帮助其他面临与你类似问题的开发人员，看看对你有用的正确答案。我已经反映了所有的变化。。。请看一下问题中的编辑实际上错误是我在mainActivity.java中使用了常规活动来扩展而不是片段活动，所以。。。我解决了it@smriti3：我认为我的答案是正确的，因为我已经发布了关于
getActivity.getSupportFragmentManager（）
我已经为blackbelt选择了答案。。。。。。。所以[+1]支持你分享信息并帮助我：）：@smriti3：这与支持或声誉无关。这只是为了帮助其他面临与你类似问题的开发人员，看看对你有用的正确答案。