我不明白如何使用操作栏sherlock与选项卡

时间：2012-12-22 18:24:52

标签： java android tabs actionbarsherlock fragment

我正在尝试向操作栏sherlock添加标签，但它会继续崩溃并且无法启动。我应该把什么放在xml文件中，我找不到要放在其中的内容

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){
        }

    }



}

我的ScoreRedActivity.java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

1 个答案:

答案 0 :(得分：4)

您需要添加

super.onActivityCreated(savedInstanceState)

之后

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

这是因为，正如您的LogCat所说

did not call through to super.onActivityCreated()

有些方法，即与初始化有关的方法以及活动和片段的生命周期，需要调用它们覆盖的超类方法，因为在你不是重写。但是，我知道并非所有重写方法都需要调用super，而Activity和Fragment生命周期方法只是因为它们如此复杂并且不能指望它们重写整个每次创建应用程序时都有Activity / Fragment类。

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