我不明白如何使用操作栏夏洛克与标签

Question

我正在尝试添加标签到操作栏夏洛克，但它一直崩溃，不会启动。我不知道该往xml文件里放什么

MainActivity.java

import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.ActionBar.TabListener;
import com.actionbarsherlock.app.*;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;

public class MainActivity extends SherlockFragmentActivity{
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       // setContentView(R.layout.activity_main);
        final ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        ActionBar.Tab tabData = actionBar.newTab();
        tabData.setText("Match Data");
        tabData.setTabListener(new MyTabListener());
        actionBar.addTab(tabData);
      //  tabRed.setTabListener(new TabListener<TabFragment>(this, "tab1", TabFragment.class));
       /* Tab tabComp = actionBar.newTab();
        tabComp.setText("New Competition");
        tabComp.setTabListener(new TabListener<ScoreRedActivity>(this, "B", ScoreRedActivity.class));
        actionBar.addTab(tabComp);*/
       // tabBlue.setTabListener(new TabListener<TabFragment>(this, tabBlue, TabFragment.class));


    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu){
        MenuInflater inflater = getSupportMenuInflater();
        inflater.inflate(R.menu.activity_main, menu);
        return true;
    }
    private class MyTabListener implements ActionBar.TabListener{
        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft){
            if(tab.getPosition() == 0)
            {
                ScoreRedActivity frag = new ScoreRedActivity();
                ft.replace(R.id.textView1, frag);
            }
        }
        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft){
        }
        @Override
        public void onTabReselected(Tab tab, FragmentTransaction ft){
        }
    }

}

My ScoreRedActivity.java，这是一个片段

import com.actionbarsherlock.app.SherlockFragment;
import android.os.Bundle;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
public class ScoreRedActivity extends SherlockFragment {
    EditText t;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.activity_score_red, container, false);
    }
    @Override
    public void onActivityCreated(Bundle savedInstanceState){
        t = (EditText) getActivity().findViewById(R.id.weightedRed);
    }
}

activity_score_red.xml

<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"
    tools:context=".ScoreRedActivity" >
    <TextView 
        android:layout_height="wrap_content"
        android:layout_width="wrap_content" 
        android:text="You are presently in Fragment A" 
        android:id="@+id/textView1"/>
    <Button 
        android:layout_height="wrap_content" 
        android:layout_width="wrap_content" 
        android:text="Click me for toast"
        android:id="@+id/button1"/>

</LinearLayout>

这是logcat

12-22 13:21:38.076: E/AndroidRuntime(394): FATAL EXCEPTION: main
12-22 13:21:38.076: E/AndroidRuntime(394): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.say.upscorer/org.say.upscorer.MainActivity}: android.support.v4.app.SuperNotCalledException: Fragment ScoreRedActivity{45f8b1c8 #0 id=0x1020002} did not call through to super.onActivityCreated()
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.os.Handler.dispatchMessage(Handler.java:99)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.os.Looper.loop(Looper.java:123)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread.main(ActivityThread.java:4627)
12-22 13:21:38.076: E/AndroidRuntime(394):  at java.lang.reflect.Method.invokeNative(Native Method)
12-22 13:21:38.076: E/AndroidRuntime(394):  at java.lang.reflect.Method.invoke(Method.java:521)
12-22 13:21:38.076: E/AndroidRuntime(394):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-22 13:21:38.076: E/AndroidRuntime(394):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-22 13:21:38.076: E/AndroidRuntime(394):  at dalvik.system.NativeStart.main(Native Method)
12-22 13:21:38.076: E/AndroidRuntime(394): Caused by: android.support.v4.app.SuperNotCalledException: Fragment ScoreRedActivity{45f8b1c8 #0 id=0x1020002} did not call through to super.onActivityCreated()
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1470)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:551)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.Activity.performStart(Activity.java:3781)
12-22 13:21:38.076: E/AndroidRuntime(394):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2636)
12-22 13:21:38.076: E/AndroidRuntime(394):  ... 11 more

Answer 1

你需要添加

super.onActivityCreated(savedInstanceState) 

后

t = (EditText) getActivity().findViewById(R.id.weightedRed); 

这是因为，正如您的LogCat所说的

did not call through to super.onActivityCreated()

一些方法，即那些与初始化和活动和片段的生命周期有关的方法需要调用他们覆盖的超类方法，因为在你没有覆盖的链上做的事情更高。但是要注意，并不是所有的重写方法都需要调用super, Activity和Fragment生命周期方法是一个特殊的情况，因为它们是如此复杂，你不能期望重写整个Activity/Fragment类每次你做一个应用程序。