あるフラグメントから別のフラグメントに情報を送信するという小さな問題があります。スワイプナビゲーションでプロジェクトを作成しました。1つのフラグメントには、ボタンしかありません。他のフラグメントには、テキストビューのみがあります。Fragment1のボタンをクリックしたときにfragment2にテキストを送信したい。インターフェイスで試しましたが、何が間違っているのかわかりません。
現在のコードは次のとおりです。
インターフェイス：
public interface ActivityCommunicator {
public void passDataToActivity(String someValue);
}
public interface FragmentCommunicator {
public void passDataToFragment(String someValue);
}
MainActivity：_
public class MainActivity extends FragmentActivity implements ActivityCommunicator {
public FragmentCommunicator fragmentCommunicator;
SectionsPagerAdapter mSectionsPagerAdapter;
Button btn;
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button)findViewById(R.id.button1);
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
private void SendText(View v) {
if(fragmentCommunicator != null) {
fragmentCommunicator.passDataToFragment("Hi from FragmentActivity");
}
}
@Override
public void passDataToActivity(String someValue) {
// TODO Auto-generated method stub
}
}
Fragment1：
public class Fragment1 extends Fragment {
Button btn;
public Fragment1(int position) {
// TODO Auto-generated constructor stub
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragmen1, container, false);
btn = (Button)v.findViewById(R.id.button1);
return v;
}
}
Fragment2：
public class Fragment2 extends Fragment implements FragmentCommunicator {
TextView tv;
private ActivityCommunicator activityCommunicator;
private String activityAssignedValue ="";
public Fragment2(int position) {
// TODO Auto-generated constructor stub
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment2, container, false);
tv = (TextView)v.findViewById(R.id.textView1);
return v;
}
@Override
public void passDataToFragment(String someValue) {
activityAssignedValue = someValue;
tv.setText(someValue);
}
}
fragment1.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="SendText"
android:text="Button" />
</LinearLayout>
fragment2.xml：
<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:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
main.xml：
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<!--
This title strip will display the currently visible page title, as well as the page
titles for adjacent pages.
-->
<android.support.v4.view.PagerTitleStrip
android:id="@+id/pager_title_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#33b5e5"
android:paddingBottom="4dp"
android:paddingTop="4dp"
android:textColor="#fff" />
</android.support.v4.view.ViewPager>
logcatエラーメッセージ：
01-24 14:13:41.750: W/dalvikvm(1576): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
01-24 14:13:41.760: E/AndroidRuntime(1576): FATAL EXCEPTION: main
01-24 14:13:41.760: E/AndroidRuntime(1576): java.lang.IllegalStateException: Could not find a method SendText(View) in the activity class com.example.zz.MainActivity for onClick handler on view class android.widget.Button with id 'button1'
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.view.View$1.onClick(View.java:3578)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.view.View.performClick(View.java:4084)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.view.View$PerformClick.run(View.java:16966)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.os.Handler.handleCallback(Handler.java:615)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.os.Handler.dispatchMessage(Handler.java:92)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.os.Looper.loop(Looper.java:137)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.app.ActivityThread.main(ActivityThread.java:4745)
01-24 14:13:41.760: E/AndroidRuntime(1576): at java.lang.reflect.Method.invokeNative(Native Method)
01-24 14:13:41.760: E/AndroidRuntime(1576): at java.lang.reflect.Method.invoke(Method.java:511)
01-24 14:13:41.760: E/AndroidRuntime(1576): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-24 14:13:41.760: E/AndroidRuntime(1576): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-24 14:13:41.760: E/AndroidRuntime(1576): at dalvik.system.NativeStart.main(Native Method)
01-24 14:13:41.760: E/AndroidRuntime(1576): Caused by: java.lang.NoSuchMethodException: SendText [class android.view.View]
01-24 14:13:41.760: E/AndroidRuntime(1576): at java.lang.Class.getConstructorOrMethod(Class.java:460)
01-24 14:13:41.760: E/AndroidRuntime(1576): at java.lang.Class.getMethod(Class.java:915)
01-24 14:13:41.760: E/AndroidRuntime(1576): at android.view.View$1.onClick(View.java:3571)
01-24 14:13:41.760: E/AndroidRuntime(1576): ... 11 more
それを修正するためのアドバイスはありますか？前もって感謝します。